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Annual climate stocktake shows weather records and extremes now the norm in UK Climate
Record breaking and extreme weather has become increasingly commonplace in the UK as our climate has changed over the last few decades.
Read moreHarlech (Gwynedd) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 12° Celsius;
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 12° Celsius; -
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 15° Celsius; -
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius; -
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 14° Celsius;
-
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 14° Celsius;
-
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 13° Celsius;
-
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 14° Celsius;
7 day forecast for Harlech
Today (15 July 2025)
| Time |
21:00
|
22:00
|
23:00
|
|---|---|---|---|
| Weather symbols |  |
 |
|
| Chance of precipitation |
10%
|
<5%
|
<5%
|
| Temperature |
16°
|
16°
|
16°
|
| Feels like temperature (°C) |
13°
|
13°
|
13°
|
| Wind direction and speed |
WSW
17
|
WSW
15
|
W
13
|
| Wind gust (mph) |
32
|
29
|
27
|
| Visibility |
G
|
VG
|
VG
|
| Humidity |
86%
|
84%
|
82%
|
| UV | 1 | - | - |
Wednesday (16 July 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%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
20%
|
30%
|
40%
|
| Temperature (°C) |
15°
|
15°
|
14°
|
14°
|
13°
|
13°
|
13°
|
14°
|
15°
|
16°
|
17°
|
18°
|
18°
|
18°
|
18°
|
18°
|
19°
|
19°
|
18°
|
18°
|
18°
|
17°
|
16°
|
16°
|
| Feels like temperature (°C) |
13°
|
13°
|
13°
|
13°
|
12°
|
12°
|
13°
|
14°
|
15°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
18°
|
18°
|
17°
|
17°
|
16°
|
| Wind direction and speed (mph) |
WNW
12
|
WNW
10
|
WNW
8
|
WNW
7
|
NW
5
|
NW
4
|
NW
3
|
NW
3
|
WNW
3
|
W
4
|
W
5
|
WSW
6
|
SW
7
|
SW
9
|
SW
9
|
SW
8
|
SW
7
|
SW
6
|
SW
5
|
SW
5
|
SSW
4
|
S
3
|
SE
3
|
ESE
3
|
| Wind gust (mph) |
25
|
24
|
20
|
14
|
11
|
8
|
6
|
6
|
8
|
11
|
14
|
15
|
16
|
16
|
16
|
14
|
13
|
11
|
11
|
9
|
6
|
5
|
5
|
6
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
| Humidity |
82%
|
84%
|
86%
|
88%
|
91%
|
92%
|
92%
|
85%
|
83%
|
76%
|
73%
|
69%
|
68%
|
68%
|
69%
|
69%
|
66%
|
65%
|
66%
|
68%
|
73%
|
81%
|
83%
|
83%
|
| UV | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 6 | 7 | 8 | 6 | 5 | 4 | 3 | 1 | 1 | 1 | 1 | - | - |
Thursday (17 July 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 |
40%
|
60%
|
80%
|
80%
|
60%
|
30%
|
30%
|
20%
|
30%
|
| Temperature (°C) |
16°
|
16°
|
16°
|
16°
|
17°
|
19°
|
19°
|
19°
|
17°
|
| Feels like temperature (°C) |
16°
|
16°
|
15°
|
15°
|
16°
|
17°
|
18°
|
18°
|
17°
|
| Wind direction and speed (mph) |
SE
3
|
SE
4
|
S
7
|
SSW
9
|
SSW
11
|
SSW
11
|
SSW
9
|
SSW
8
|
S
7
|
| Wind gust (mph) |
7
|
13
|
17
|
20
|
21
|
21
|
20
|
17
|
16
|
| Visibility (description) |
G
|
G
|
G
|
P
|
G
|
VG
|
E
|
E
|
VG
|
| Humidity |
84%
|
86%
|
96%
|
98%
|
97%
|
90%
|
85%
|
85%
|
90%
|
| UV | - | - | - | 1 | 2 | 3 | 3 | 1 | - |
Friday (18 July 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
50%
|
40%
|
20%
|
20%
|
10%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
17°
|
16°
|
16°
|
17°
|
18°
|
19°
|
18°
|
15°
|
| Feels like temperature (°C) |
16°
|
15°
|
15°
|
16°
|
17°
|
18°
|
18°
|
16°
|
| Wind direction and speed (mph) |
S
8
|
SSW
8
|
SSW
7
|
SW
9
|
SW
9
|
SW
8
|
SW
6
|
S
4
|
| Wind gust (mph) |
17
|
17
|
17
|
18
|
18
|
16
|
12
|
7
|
| Visibility (description) |
VG
|
VG
|
VG
|
E
|
E
|
E
|
E
|
VG
|
| Humidity |
90%
|
92%
|
88%
|
82%
|
80%
|
76%
|
76%
|
88%
|
| UV | - | - | 1 | 3 | 6 | 5 | 1 | - |
Saturday (19 July 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
20%
|
30%
|
40%
|
50%
|
40%
|
40%
|
| Temperature (°C) |
15°
|
15°
|
15°
|
18°
|
20°
|
19°
|
19°
|
17°
|
| Feels like temperature (°C) |
15°
|
14°
|
15°
|
18°
|
19°
|
19°
|
18°
|
17°
|
| Wind direction and speed (mph) |
E
3
|
ENE
4
|
NE
4
|
NNW
5
|
NNW
6
|
NW
7
|
NNW
6
|
ENE
5
|
| Wind gust (mph) |
7
|
7
|
10
|
14
|
14
|
15
|
11
|
9
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
87%
|
86%
|
82%
|
72%
|
69%
|
73%
|
77%
|
87%
|
| UV | - | - | 1 | 4 | 5 | 3 | 1 | - |
Sunday (20 July 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
40%
|
40%
|
40%
|
50%
|
50%
|
40%
|
20%
|
20%
|
| Temperature (°C) |
16°
|
15°
|
16°
|
18°
|
19°
|
20°
|
19°
|
16°
|
| Feels like temperature (°C) |
16°
|
15°
|
16°
|
18°
|
19°
|
19°
|
18°
|
15°
|
| Wind direction and speed (mph) |
E
5
|
ESE
4
|
E
5
|
WSW
7
|
WSW
8
|
W
9
|
WNW
8
|
SSW
7
|
| Wind gust (mph) |
7
|
7
|
9
|
12
|
14
|
13
|
9
|
8
|
| Visibility (description) |
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
G
|
| Humidity |
91%
|
94%
|
91%
|
85%
|
80%
|
79%
|
80%
|
96%
|
| UV | - | - | 1 | 4 | 6 | 4 | 1 | - |
Monday (21 July 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
30%
|
30%
|
30%
|
40%
|
30%
|
20%
|
10%
|
20%
|
| Temperature (°C) |
15°
|
15°
|
16°
|
18°
|
19°
|
20°
|
19°
|
17°
|
| Feels like temperature (°C) |
15°
|
15°
|
16°
|
18°
|
19°
|
19°
|
18°
|
16°
|
| Wind direction and speed (mph) |
WSW
5
|
WSW
4
|
SW
4
|
WSW
6
|
WSW
9
|
WSW
10
|
WSW
10
|
SW
7
|
| Wind gust (mph) |
5
|
5
|
9
|
12
|
15
|
14
|
10
|
8
|
| Visibility (description) |
M
|
M
|
G
|
G
|
G
|
VG
|
VG
|
G
|
| Humidity |
98%
|
98%
|
94%
|
88%
|
82%
|
77%
|
83%
|
95%
|
| UV | - | - | 1 | 3 | 6 | 4 | 1 | - |
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Wales weather forecast
Headline:
Drier and calmer overnight.
This Evening and Tonight:
Showers continue to fade away this evening, allowing clearer skies to develop for many overnight. Winds gradually ease, allowing some patchy fog and low cloud to form in rural spots by dawn. Feeling fresher than recent nights. Minimum temperature 14 °C.
Wednesday:
Mainly dry and bright with plenty of warm sunshine in the afternoon. Cloud spills across the southwest later bringing a few spots of rain. Feeling warmer, especially in the sunshine. Maximum temperature 23 °C.
Outlook for Thursday to Saturday:
Warmer on Thursday and Friday with a mix of sunshine and a scattering of showers. Rain chances increase on Saturday, with some heavy and thundery rain possibly developing.
Updated: