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Prestatyn Gronant Dunes (Beach) (Flintshire) weather

Here are our top tips to keep you, your friends and family safe at the beach with links to Royal National Lifeboat Institution (RNLI) and Met Office advice.

Forecast days

Cloudy changing to sunny intervals by late morning.
Beach safety today
Use caution in and out of the sea. Strong winds may blow you off course or affect your balance
  • • paddle boarding/kayaking not recommended at any level
  • • consider your abilities in all other activities, seek expert advice

Tide: Next high tide (7.8m) at

Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution
No pollen data.

7 day forecast for Prestatyn Gronant Dunes (Beach)

Today (19 September 2025)
Time
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Cloudy Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Overcast Light rain Light rain Light rain
Chance of precipitation
20%
20%
20%
20%
10%
<5%
10%
10%
20%
30%
40%
40%
40%
40%
50%
60%
60%
60%
Temperature
17°
17°
17°
18°
18°
19°
20°
20°
20°
20°
20°
19°
19°
18°
17°
17°
16°
16°
Feels like temperature (°C)
15°
15°
14°
15°
16°
16°
17°
18°
18°
18°
18°
17°
17°
17°
16°
16°
16°
16°
Wind direction and speed
SSW
15
SSW
15
SSW
15
SSW
15
SSW
16
SW
15
SW
15
SW
14
SW
14
SW
13
SW
13
SW
12
SSW
11
SW
10
SW
8
SW
7
W
6
W
6
Wind gust (mph)
25
25
26
26
27
25
25
24
25
23
22
20
17
15
13
12
12
11
Visibility
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
85%
85%
85%
85%
80%
76%
75%
73%
72%
72%
74%
76%
79%
84%
87%
89%
92%
92%
UV 1 1 1 1 2 2 3 3 3 2 1 1 1 1 - - - -
Wind direction and speed
15
15
16
16
16
16
15
14
13
13
12
12
12
11
9
8
7
7
Height of waves offshore (m)
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
Period of waves offshore (s)
5
5
4
4
4
4
3
4
4
4
4
4
4
4
4
4
4
4
Direction of waves offshore
Saturday (20 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Light rain Light rain Light rain Heavy rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Heavy shower day Light shower day Light shower day Heavy shower night Heavy shower night Heavy shower night Heavy rain Heavy rain
Chance of precipitation
70%
80%
90%
≥95%
≥95%
90%
80%
80%
80%
80%
70%
70%
70%
70%
70%
60%
70%
60%
60%
70%
70%
70%
80%
80%
Temperature (°C)
16°
15°
15°
14°
14°
14°
13°
13°
13°
13°
14°
14°
14°
14°
14°
14°
15°
14°
14°
13°
13°
13°
12°
12°
Feels like temperature (°C)
15°
15°
14°
14°
13°
13°
13°
12°
12°
12°
12°
12°
13°
13°
13°
13°
13°
12°
12°
11°
10°
10°
9°
9°
Wind direction and speed (mph)
W
6
WNW
6
WNW
6
NW
7
NW
7
NW
7
NW
6
NW
6
NW
6
NNW
6
NNW
7
NNW
8
NNW
8
NNW
9
NNW
9
NNW
10
NNW
11
NNW
12
NNW
13
NW
13
WNW
14
WNW
15
NW
17
NW
18
Wind gust (mph)
11
12
13
12
12
12
12
11
11
10
10
11
12
13
13
13
15
17
17
17
18
19
20
21
Visibility (description)
VG
VG
G
M
M
M
G
G
G
G
G
G
M
G
G
G
M
G
VG
VG
VG
VG
VG
VG
Humidity
92%
93%
93%
93%
95%
94%
93%
93%
93%
92%
92%
90%
88%
86%
87%
87%
84%
87%
84%
85%
84%
84%
85%
86%
UV - - - - - - 1 1 1 1 1 1 2 1 1 2 1 1 1 1 - - - -
Wind direction and speed (mph)
6
6
6
6
6
6
6
6
5
6
7
8
9
9
10
10
11
12
13
13
14
15
17
18
Height of waves offshore (m)
0.3
0.4
0.5
0.5
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
Period of waves offshore (s)
3
3
4
4
4
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
2
Direction of waves offshore
Sunday (21 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light shower day Light shower day Cloudy Cloudy Sunny intervals Sunny intervals Light shower day Sunny intervals Light shower day Light shower day Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Clear night
Chance of precipitation
80%
80%
80%
80%
80%
80%
80%
70%
70%
60%
50%
50%
40%
40%
50%
50%
50%
50%
50%
40%
40%
30%
30%
20%
Temperature (°C)
12°
11°
11°
11°
11°
11°
10°
10°
10°
10°
11°
11°
12°
12°
12°
13°
13°
13°
12°
12°
12°
11°
11°
11°
Feels like temperature (°C)
8°
8°
8°
7°
7°
7°
7°
7°
7°
7°
8°
8°
9°
9°
9°
10°
10°
10°
9°
9°
9°
9°
8°
8°
Wind direction and speed (mph)
NW
19
NNW
19
NNW
19
NNW
19
NNW
19
N
19
N
19
N
19
N
18
N
18
N
16
N
16
N
16
N
16
N
15
N
14
N
14
N
14
N
15
NNE
15
NNE
14
NNE
14
NE
13
NNE
13
Wind gust (mph)
21
21
19
28
30
31
30
30
30
30
29
28
27
27
27
28
27
27
24
21
21
21
20
19
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
E
E
E
E
E
E
E
VG
VG
VG
VG
VG
Humidity
86%
86%
86%
86%
85%
84%
82%
80%
79%
74%
73%
69%
65%
62%
59%
59%
59%
58%
62%
64%
63%
65%
65%
67%
UV - - - - - - 1 1 1 1 2 3 4 3 3 2 1 1 1 1 - - - -
Wind direction and speed (mph)
19
19
19
19
19
19
18
18
18
17
16
16
16
16
15
14
14
14
14
15
14
14
13
13
Height of waves offshore (m)
0.2
0.2
0.3
0.3
0.4
0.6
0.7
0.9
1.0
1.2
1.3
1.2
1.0
0.9
0.8
0.8
0.7
0.7
0.7
0.7
0.7
0.6
0.6
0.6
Period of waves offshore (s)
3
3
4
5
6
6
6
6
6
6
6
6
5
5
5
5
5
5
5
5
5
5
5
5
Direction of waves offshore
Monday (22 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Clear night Clear night Clear night Clear night Clear night Clear night Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
Chance of precipitation
10%
10%
10%
10%
10%
10%
10%
10%
10%
<5%
<5%
10%
10%
10%
10%
10%
10%
10%
20%
20%
20%
20%
20%
20%
Temperature (°C)
10°
10°
10°
9°
9°
9°
9°
8°
9°
10°
11°
11°
12°
12°
13°
13°
13°
13°
12°
12°
11°
11°
11°
11°
Feels like temperature (°C)
8°
7°
7°
7°
7°
6°
6°
6°
7°
8°
9°
9°
10°
10°
10°
10°
11°
11°
10°
10°
10°
10°
9°
9°
Wind direction and speed (mph)
NNE
12
NNE
12
NNE
11
NNE
11
NNE
10
NNE
10
NNE
9
NNE
9
NNE
9
NNE
9
NNE
10
NNE
10
NNE
10
N
10
N
10
NNW
11
NNW
11
N
10
N
10
NNW
10
N
8
N
8
N
8
NNE
7
Wind gust (mph)
17
17
17
16
16
16
16
15
16
18
19
19
20
20
21
21
20
20
18
16
15
14
14
14
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
E
E
E
E
E
E
VG
VG
VG
VG
VG
VG
Humidity
67%
68%
70%
70%
71%
72%
73%
74%
72%
66%
63%
59%
56%
55%
55%
55%
55%
55%
57%
64%
66%
67%
72%
75%
UV - - - - - - - 1 1 1 2 3 4 4 3 2 1 1 1 1 - - - -
Wind direction and speed (mph)
12
12
11
11
10
10
9
9
9
9
10
10
10
10
10
11
11
10
10
10
9
8
8
7
Height of waves offshore (m)
0.5
0.5
0.5
0.5
0.5
0.4
0.4
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
Period of waves offshore (s)
5
5
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
3
3
3
3
3
3
3
Direction of waves offshore
Tuesday (23 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
Chance of precipitation
20%
20%
20%
20%
20%
20%
20%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
Temperature (°C)
10°
10°
10°
10°
10°
10°
10°
9°
10°
11°
12°
13°
13°
14°
14°
14°
14°
14°
13°
12°
12°
12°
11°
11°
Feels like temperature (°C)
9°
9°
9°
9°
8°
8°
8°
8°
9°
10°
11°
11°
12°
12°
12°
12°
12°
12°
12°
11°
10°
10°
10°
10°
Wind direction and speed (mph)
NE
7
NE
6
NNE
7
NE
7
NE
7
ENE
7
ESE
6
SE
6
ESE
7
NE
7
NNE
8
NNE
9
N
9
N
9
N
9
N
9
N
9
N
9
N
9
N
8
NNE
7
NNE
7
NE
6
ENE
6
Wind gust (mph)
13
12
11
11
11
10
10
11
10
10
11
12
13
15
16
16
14
13
12
10
10
10
9
10
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
76%
77%
78%
78%
78%
79%
81%
82%
79%
74%
69%
65%
63%
62%
61%
60%
61%
61%
65%
71%
74%
76%
77%
78%
UV - - - - - - - 1 1 1 2 3 3 3 3 2 1 1 1 1 - - - -
Wind direction and speed (mph)
7
6
7
7
7
7
7
6
7
8
8
8
9
9
9
9
9
9
8
8
7
7
6
6
Height of waves offshore (m)
0.2
0.2
0.2
0.2
0.2
0.2
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.2
Period of waves offshore (s)
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Direction of waves offshore
Wednesday (24 September 2025)
Time
00:00
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Cloudy Cloudy Sunny intervals Sunny intervals Cloudy Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
10%
<5%
<5%
<5%
10%
10%
<5%
<5%
<5%
Temperature (°C)
10°
10°
9°
9°
12°
14°
15°
13°
11°
Feels like temperature (°C)
9°
9°
8°
7°
11°
13°
13°
12°
10°
Wind direction and speed (mph)
ESE
6
SE
5
ESE
5
ESE
5
E
7
NE
8
NNE
8
NE
7
E
6
Wind gust (mph)
11
6
6
8
12
11
10
8
7
Visibility (description)
VG
G
G
G
VG
VG
VG
VG
VG
Humidity
81%
83%
88%
90%
75%
64%
59%
74%
82%
UV - - - 1 2 3 1 1 -
Wind direction and speed (mph)
6
5
5
5
7
8
8
7
6
Height of waves offshore (m)
0.2
0.2
0.1
0.1
0.1
 – – – –
Period of waves offshore (s)
3
3
3
3
3
 – – – –
Direction of waves offshore
–
–
–
Thursday (25 September 2025)
Time
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
<5%
10%
10%
10%
10%
10%
<5%
10%
Temperature (°C)
10°
10°
9°
13°
15°
16°
13°
12°
Feels like temperature (°C)
9°
8°
8°
12°
13°
14°
12°
10°
Wind direction and speed (mph)
ESE
6
ESE
6
ESE
6
E
8
E
9
NE
9
ENE
8
ESE
7
Wind gust (mph)
7
7
8
11
12
10
8
7
Visibility (description)
VG
G
G
VG
VG
VG
VG
VG
Humidity
86%
91%
91%
78%
67%
62%
75%
82%
UV - - 1 2 3 1 1 -
Wind direction and speed (mph)
6
 – – – – – – –
Height of waves offshore (m) – – – – – – – –
Period of waves offshore (s) – – – – – – – –
Direction of waves offshore
–
–
–
–
–
–
–
–

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times explained
News

Wind and rain marking a change in the UK weather

Warnings have been issued as the weather across the UK becomes increasingly mild but wet and windy.

Read more

UK video forecast

Prestatyn Gronant Dunes (Beach) weather map

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Forecast for 06:00, Fri
Updated 04:00 (UTC+1) on Fri 19 Sep 2025

Wales weather forecast

Headline:

Increasingly wet and windy on Saturday.

Today:

A drier, brighter and warmer day for most with sunny spells, these most prevalent in the east. Rain at times across Anglesey and rain edging into other western regions later, heavy at times. Winds gradually easing. Maximum temperature 21 °C.

Tonight:

Remaining cloudy, with outbreaks of rain and drizzle turning more widespread overnight, perhaps heavy at times. Breezy at times along coasts. Feeling humid. Minimum temperature 15 °C.

Saturday:

Becoming increasingly windy, with strong winds and coastal gales possible, especially later. Cloudy with outbreaks of rain, perhaps heavy at times, giving localised flooding and travel disruption. Maximum temperature 18 °C.

Outlook for Sunday to Tuesday:

Sunny intervals with scattered showers on Sunday. Strong winds gradually easing, but feeling considerably cooler. Much drier from Monday, with plenty of sunny spells, though the odd shower still possible.

Updated:

UK long range weather forecast

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