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 morePorthmadog (Gwynedd) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 6° Celsius;
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 6° Celsius; -
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 6° Celsius;
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 6° Celsius;
-
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 3° Celsius;
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 3° Celsius;
-
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 4° Celsius;
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 4° Celsius; -
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 4° Celsius;
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 4° Celsius;
-
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 3° Celsius;
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 3° Celsius;
-
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 4° Celsius;
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 4° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 5° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 5° Celsius;
8 day forecast for Porthmadog
Today (2 May 2025)
| Time |
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
 |
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
15°
|
14°
|
13°
|
11°
|
10°
|
10°
|
| Feels like temperature (°C) |
13°
|
12°
|
11°
|
9°
|
8°
|
8°
|
| Wind direction and speed |
NNE
11
|
NNE
10
|
NNE
9
|
NNE
8
|
NNE
8
|
NNE
7
|
| Wind gust (mph) |
23
|
21
|
19
|
18
|
16
|
16
|
| Visibility |
E
|
E
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
53%
|
55%
|
64%
|
68%
|
70%
|
72%
|
| UV | 1 | 1 | 1 | - | - | - |
Saturday (3 May 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 | |
|
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
9°
|
8°
|
8°
|
7°
|
7°
|
7°
|
6°
|
8°
|
10°
|
12°
|
13°
|
13°
|
14°
|
14°
|
15°
|
15°
|
15°
|
14°
|
14°
|
13°
|
12°
|
10°
|
9°
|
9°
|
| Feels like temperature (°C) |
8°
|
7°
|
6°
|
6°
|
5°
|
5°
|
5°
|
6°
|
9°
|
10°
|
11°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
10°
|
8°
|
7°
|
7°
|
| Wind direction and speed (mph) |
NE
7
|
NNE
6
|
NNE
6
|
NNE
6
|
NNE
6
|
NE
5
|
NNE
4
|
NNE
4
|
NNE
6
|
NNE
8
|
N
9
|
N
11
|
N
11
|
N
12
|
N
12
|
N
13
|
N
13
|
NNE
12
|
N
12
|
N
12
|
N
11
|
N
11
|
NNE
10
|
NNE
8
|
| Wind gust (mph) |
16
|
15
|
16
|
15
|
13
|
10
|
9
|
12
|
19
|
23
|
25
|
26
|
27
|
29
|
30
|
29
|
27
|
27
|
25
|
24
|
23
|
21
|
18
|
16
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
| Humidity |
74%
|
76%
|
77%
|
77%
|
79%
|
83%
|
85%
|
83%
|
74%
|
70%
|
66%
|
66%
|
65%
|
60%
|
53%
|
43%
|
41%
|
43%
|
51%
|
55%
|
65%
|
71%
|
71%
|
71%
|
| UV | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 4 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | - | - | - |
Sunday (4 May 2025)
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
 |
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
9°
|
8°
|
7°
|
7°
|
12°
|
13°
|
13°
|
12°
|
8°
|
| Feels like temperature (°C) |
7°
|
6°
|
4°
|
6°
|
10°
|
11°
|
11°
|
9°
|
6°
|
| Wind direction and speed (mph) |
NNE
7
|
NE
7
|
NE
6
|
NE
6
|
ENE
7
|
NE
10
|
NNE
12
|
NNE
11
|
NNE
7
|
| Wind gust (mph) |
15
|
14
|
12
|
16
|
26
|
28
|
28
|
26
|
20
|
| Visibility (description) |
E
|
VG
|
VG
|
VG
|
E
|
E
|
E
|
E
|
E
|
| Humidity |
73%
|
75%
|
76%
|
72%
|
59%
|
47%
|
40%
|
44%
|
60%
|
| UV | - | - | - | 1 | 3 | 4 | 3 | 1 | - |
Monday (5 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
5°
|
4°
|
5°
|
10°
|
13°
|
13°
|
12°
|
8°
|
| Feels like temperature (°C) |
3°
|
1°
|
3°
|
8°
|
10°
|
11°
|
10°
|
5°
|
| Wind direction and speed (mph) |
NE
6
|
NNE
5
|
NNE
5
|
NE
9
|
NE
10
|
NE
10
|
NNE
10
|
NNE
8
|
| Wind gust (mph) |
16
|
14
|
23
|
26
|
26
|
23
|
20
|
15
|
| Visibility (description) |
E
|
E
|
E
|
E
|
E
|
E
|
E
|
VG
|
| Humidity |
65%
|
74%
|
73%
|
54%
|
43%
|
43%
|
55%
|
67%
|
| UV | - | - | 1 | 2 | 3 | 2 | 1 | - |
Tuesday (6 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
6°
|
5°
|
6°
|
12°
|
15°
|
16°
|
14°
|
9°
|
| Feels like temperature (°C) |
4°
|
3°
|
5°
|
11°
|
13°
|
14°
|
12°
|
7°
|
| Wind direction and speed (mph) |
NE
6
|
NE
5
|
NE
4
|
E
6
|
NE
8
|
NE
10
|
NNE
9
|
NNE
6
|
| Wind gust (mph) |
12
|
10
|
13
|
19
|
22
|
21
|
17
|
7
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
74%
|
77%
|
74%
|
55%
|
47%
|
43%
|
56%
|
70%
|
| UV | - | - | 1 | 4 | 5 | 3 | 1 | - |
Wednesday (7 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
7°
|
6°
|
8°
|
12°
|
15°
|
16°
|
14°
|
9°
|
| Feels like temperature (°C) |
6°
|
5°
|
7°
|
11°
|
13°
|
14°
|
13°
|
8°
|
| Wind direction and speed (mph) |
NE
4
|
NE
4
|
NE
3
|
ENE
6
|
ENE
8
|
NE
9
|
NE
8
|
NNE
4
|
| Wind gust (mph) |
6
|
5
|
10
|
17
|
21
|
21
|
15
|
7
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
80%
|
87%
|
79%
|
65%
|
57%
|
55%
|
62%
|
84%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
Thursday (8 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
7°
|
5°
|
8°
|
13°
|
16°
|
17°
|
16°
|
10°
|
| Feels like temperature (°C) |
6°
|
4°
|
7°
|
11°
|
14°
|
15°
|
14°
|
9°
|
| Wind direction and speed (mph) |
NE
4
|
ENE
4
|
ENE
4
|
ENE
6
|
ENE
8
|
ENE
8
|
NE
7
|
NE
4
|
| Wind gust (mph) |
5
|
6
|
10
|
14
|
16
|
17
|
14
|
6
|
| Visibility (description) |
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
91%
|
92%
|
83%
|
66%
|
56%
|
52%
|
58%
|
87%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
Friday (9 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
7°
|
6°
|
9°
|
14°
|
17°
|
18°
|
17°
|
10°
|
| Feels like temperature (°C) |
6°
|
4°
|
8°
|
13°
|
16°
|
17°
|
16°
|
10°
|
| Wind direction and speed (mph) |
ENE
4
|
ENE
4
|
ENE
4
|
ENE
5
|
ENE
7
|
NE
8
|
NE
7
|
ENE
4
|
| Wind gust (mph) |
5
|
5
|
9
|
15
|
17
|
18
|
13
|
5
|
| Visibility (description) |
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
92%
|
94%
|
83%
|
62%
|
53%
|
51%
|
56%
|
87%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
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Porthmadog weather map
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Wales weather forecast
Headline:
Largely fine over the weekend with sunny spells.
This Evening and Tonight:
Remaining dry this evening with some late sunshine across the country. Staying dry with clear spells developing widely overnight and turning chillier with light winds. Minimum temperature 5 °C.
Saturday:
A fresher start to Saturday with plenty of sunshine. Cloudier at times through the afternoon with sunny spells. Still feeling pleasant in the sunshine. Breezy along the coasts. Maximum temperature 21 °C.
Outlook for Sunday to Tuesday:
High pressure dominating for the bank holiday weekend but with temperatures returning closer to average. Largely dry with plenty of sunny spells. Chilly overnight with frost possible. Breezy at times.
Updated: