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Harlech (Beach) (Gwynedd) 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

Sunny intervals changing to cloudy by early evening.
Beach safety today
Use caution in the sea. Waves can be bigger or stronger than you expect, strong rips likely, strong wind may blow you off course
  • • unsafe for novice surfers
  • • paddle boarding/kayaking not recommended at any level

Tide: Next high tide (3.2m) at

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

7 day forecast for Harlech (Beach)

Today (16 September 2025)
Time
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Sunny intervals Sunny intervals Partly cloudy night Cloudy Light rain Light rain Heavy rain
Chance of precipitation
30%
30%
20%
30%
50%
80%
≥95%
Temperature
15°
15°
15°
14°
14°
14°
14°
Feels like temperature (°C)
12°
12°
11°
11°
11°
11°
11°
Wind direction and speed
WSW
19
WSW
19
WSW
19
SW
18
SW
17
SW
16
SSW
16
Wind gust (mph)
26
25
23
21
21
22
22
Visibility
VG
VG
VG
VG
VG
VG
M
Humidity
73%
75%
74%
75%
75%
80%
83%
UV 1 1 1 - - - -
Wind direction and speed
19
19
19
18
17
16
16
Height of waves offshore (m)
0.7
0.7
0.7
0.7
0.7
0.7
0.7
Period of waves offshore (s)
7
7
6
5
5
5
5
Direction of waves offshore
Wednesday (17 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 Heavy rain Heavy rain Light rain Light rain Light rain Overcast Overcast Overcast Overcast Overcast Cloudy Cloudy Cloudy Cloudy Overcast Light rain
Chance of precipitation
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
80%
80%
70%
60%
50%
40%
40%
50%
50%
50%
40%
40%
40%
50%
50%
Temperature (°C)
13°
13°
13°
13°
14°
14°
15°
16°
16°
16°
16°
17°
17°
17°
17°
17°
17°
16°
16°
16°
16°
16°
16°
16°
Feels like temperature (°C)
10°
10°
10°
10°
10°
10°
10°
10°
11°
11°
12°
12°
12°
13°
13°
13°
13°
13°
13°
12°
12°
12°
12°
13°
Wind direction and speed (mph)
S
16
SSE
17
SSE
19
SSE
21
SSE
24
S
28
S
31
SSW
30
SW
29
SW
27
SW
26
SW
25
SW
25
SW
24
SW
24
SW
24
SW
23
SW
22
SSW
22
SSW
22
SSW
21
SSW
21
SSW
20
SW
19
Wind gust (mph)
23
27
28
32
38
43
42
40
38
36
36
36
36
36
36
36
36
34
32
30
29
28
27
27
Visibility (description)
M
M
P
P
P
P
P
M
M
M
G
VG
VG
VG
E
E
E
E
E
E
E
E
E
E
Humidity
88%
92%
92%
92%
92%
92%
92%
92%
93%
93%
94%
95%
95%
95%
95%
95%
94%
94%
93%
92%
91%
91%
92%
92%
UV - - - - - - 1 1 1 1 1 1 2 2 3 2 1 1 1 1 - - - -
Wind direction and speed (mph)
17
18
19
21
24
27
30
30
29
27
26
25
25
25
24
23
23
22
22
22
22
21
21
20
Height of waves offshore (m)
0.6
0.6
0.6
0.7
0.8
0.9
1.2
1.1
1.3
1.4
1.4
1.3
1.3
1.3
1.3
1.2
1.2
1.1
1.1
1.1
1.1
1.1
1.0
1.0
Period of waves offshore (s)
6
6
6
5
5
5
6
7
7
8
8
8
8
8
9
9
8
8
7
7
7
7
6
6
Direction of waves offshore
Thursday (18 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 Light 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 Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain
Chance of precipitation
60%
70%
80%
80%
90%
90%
90%
90%
80%
80%
80%
70%
60%
60%
70%
70%
60%
60%
60%
60%
70%
60%
60%
60%
Temperature (°C)
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
Feels like temperature (°C)
13°
13°
13°
13°
13°
12°
12°
12°
11°
12°
12°
12°
12°
12°
12°
12°
13°
13°
13°
13°
13°
12°
12°
12°
Wind direction and speed (mph)
SW
19
SW
19
SW
19
SSW
19
SSW
20
SSW
22
SSW
25
SSW
26
SSW
27
SSW
27
SSW
26
SSW
26
SSW
27
SSW
27
SSW
27
SSW
27
SSW
26
SSW
25
SSW
25
SSW
25
SSW
25
SSW
25
SSW
25
SSW
25
Wind gust (mph)
27
24
25
25
26
32
36
39
41
41
39
39
39
38
38
38
37
36
36
35
35
35
35
35
Visibility (description)
E
VG
G
G
G
G
G
G
VG
VG
VG
VG
VG
G
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
94%
94%
95%
96%
96%
97%
97%
96%
95%
93%
93%
91%
92%
92%
92%
92%
92%
92%
93%
92%
92%
92%
91%
91%
UV - - - - - - 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - - - -
Wind direction and speed (mph)
20
20
20
21
22
23
25
27
27
26
26
27
27
27
27
27
26
26
26
26
26
26
25
25
Height of waves offshore (m)
1.0
0.8
0.9
1.0
1.1
1.1
1.1
1.1
1.2
1.3
1.4
1.4
1.4
1.4
1.4
1.5
1.6
1.5
1.5
1.5
1.4
1.4
1.4
1.3
Period of waves offshore (s)
6
6
6
7
7
7
6
6
6
6
7
7
7
7
7
7
7
8
8
8
8
8
8
8
Direction of waves offshore
Friday (19 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 Light 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 Light rain Light rain Light rain Cloudy Cloudy Cloudy Cloudy Cloudy
Chance of precipitation
60%
60%
60%
70%
70%
60%
60%
60%
70%
70%
60%
60%
60%
60%
60%
70%
60%
60%
50%
50%
40%
40%
40%
40%
Temperature (°C)
17°
17°
17°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
15°
15°
15°
15°
15°
Feels like temperature (°C)
12°
12°
12°
12°
12°
12°
12°
12°
12°
13°
13°
13°
13°
13°
14°
13°
13°
13°
13°
13°
13°
13°
13°
12°
Wind direction and speed (mph)
SSW
25
SSW
25
SSW
24
SSW
25
SSW
25
SSW
24
SSW
22
SSW
20
SSW
20
SSW
19
SSW
19
SSW
19
SSW
18
SSW
17
SW
17
SW
16
SSW
16
SW
15
SSW
15
SW
14
SW
13
SW
13
SW
12
WSW
12
Wind gust (mph)
36
35
33
33
30
26
25
22
23
25
24
23
23
21
21
21
21
19
15
16
16
15
14
15
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
E
E
E
E
E
E
E
E
Humidity
90%
90%
90%
90%
91%
91%
91%
92%
92%
92%
90%
88%
88%
88%
89%
88%
86%
85%
86%
85%
84%
85%
82%
81%
UV - - - - - - 1 1 1 1 1 1 2 2 2 1 1 1 1 1 - - - -
Wind direction and speed (mph)
25
25
24
23
23
21
20
19
18
18
18
17
17
17
16
16
15
15
15
14
14
13
12
12
Height of waves offshore (m)
1.3
1.3
1.2
1.2
1.1
1.0
1.0
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.6
0.6
0.5
0.5
0.5
0.5
0.5
0.4
0.4
Period of waves offshore (s)
8
8
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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 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 Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Light shower day Light shower day Light shower night Light shower night Light shower night Light shower night Light shower night
Chance of precipitation
50%
40%
30%
30%
30%
30%
30%
30%
30%
30%
40%
40%
50%
50%
40%
50%
50%
60%
50%
50%
60%
60%
60%
60%
Temperature (°C)
14°
14°
14°
14°
13°
13°
13°
13°
13°
14°
14°
15°
15°
15°
15°
15°
15°
15°
14°
13°
13°
12°
12°
12°
Feels like temperature (°C)
12°
12°
12°
12°
11°
11°
11°
11°
11°
12°
12°
13°
13°
13°
13°
13°
13°
12°
12°
11°
10°
10°
10°
Wind direction and speed (mph)
WSW
12
WSW
11
SW
11
W
11
W
11
WSW
11
WSW
10
WSW
10
W
10
WNW
10
WNW
10
W
11
WNW
11
WNW
12
W
12
WNW
12
NW
12
NW
12
NNW
13
NNW
12
N
12
N
11
N
12
N
13
Wind gust (mph)
15
14
12
12
12
12
11
12
11
10
11
12
13
16
18
18
17
17
17
15
17
17
19
21
Visibility (description)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Humidity
81%
80%
80%
80%
79%
78%
78%
79%
79%
78%
78%
76%
75%
75%
73%
71%
72%
72%
74%
74%
75%
76%
77%
78%
UV - - - - - - - 1 1 1 2 2 3 3 2 2 1 1 1 1 - - - -
Wind direction and speed (mph)
11
11
11
11
10
10
10
10
10
10
10
10
11
12
12
12
13
13
13
13
13
13
13
13
Height of waves offshore (m)
0.4
0.4
0.4
0.4
0.4
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
0.2
0.3
0.3
0.3
Period of waves offshore (s)
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
6
Direction of waves offshore
Sunday (21 September 2025)
Time
00:00
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Light shower night Light shower night Light shower night Sunny intervals Sunny intervals Cloudy Cloudy Partly cloudy night Cloudy
Chance of precipitation
60%
60%
50%
40%
30%
20%
20%
20%
10%
Temperature (°C)
12°
11°
11°
10°
12°
13°
13°
11°
10°
Feels like temperature (°C)
10°
10°
Wind direction and speed (mph)
N
14
N
14
NNE
15
NNE
15
NNE
16
NNE
17
N
17
NNE
15
NNE
13
Wind gust (mph)
23
23
24
28
29
28
27
23
17
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
79%
79%
79%
76%
69%
64%
61%
66%
67%
UV - - - 1 2 4 2 1 -
Wind direction and speed (mph)
14
14
15
15
16
17
17
15
13
Height of waves offshore (m)
0.3
0.4
0.5
0.5
0.5
0.5
0.4
0.3
0.2
Period of waves offshore (s)
4
2
3
3
3
3
3
2
2
Direction of waves offshore
Monday (22 September 2025)
Time
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Cloudy Cloudy Sunny intervals Cloudy Cloudy Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
10%
<5%
<5%
<5%
<5%
<5%
<5%
10%
Temperature (°C)
10°
12°
14°
14°
11°
10°
Feels like temperature (°C)
10°
11°
11°
Wind direction and speed (mph)
NNE
11
NNE
11
NE
10
NE
12
NE
13
NE
13
NE
12
NE
10
Wind gust (mph)
15
14
15
17
17
16
14
12
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
67%
66%
66%
64%
60%
60%
63%
65%
UV - - 1 2 4 2 1 -
Wind direction and speed (mph)
11
Height of waves offshore (m)
Period of waves offshore (s)
Direction of waves offshore

Tide times

Tuesday 16 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 16 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 16 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 16 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 17 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 17 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 17 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 17 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 18 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 18 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 18 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 18 September

Tide times and heights are from Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 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 Porthmadog tidal station which is 3.7 miles away. So times may be different at this beach. What does this mean?

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

Harlech (Beach) weather map

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Flood alerts in force for Wales
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Wales weather forecast

Headline:

Remaining changeable with rain tonight.

This Evening and Tonight:

Cloudy this evening then turning increasingly wet and windy overnight with a band of heavy and persistent rain pushing eastwards. Rain most persistent over the mountains, with flooding possible. Mild overnight. Minimum temperature 11 °C.

Wednesday:

Heavy, persistent rain clearing eastwards through the morning, though remaining cloudy with outbreaks of patchy rain and drizzle throughout the day, turning heavy at times over the hills. Breezy. Maximum temperature 18 °C.

Outlook for Thursday to Saturday:

Remaining changeable with showers or longer spells of rain at times, though brighter interludes are possible. Often breezy. A little milder and more humid by the end of the week.

Updated:

UK long range weather forecast

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