News
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 moreCemlyn (Beach) (Isle of Anglesey) weather
Find a forecast
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.
- Head to a lifeguarded beach; check the RNLI lifeguarded beach tool
- Follow RNLI Float to Live advice if you find yourself struggling in the water
- Know what to do if you get caught in a rip current (RNLI)
- Check the tide times to avoid getting cut off by the tide coming in
- Call 999 and ask for the coastguard in an emergency
- Learn more about staying safe at the beach
Forecast days
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 13° 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: 12° Celsius;
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 12° 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: 13° Celsius;
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 13° Celsius;
-
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 14° Celsius;
Partly cloudy.
🏖️ Beach safety today:
Enjoy the beach but be aware that the wind may affect your control of direction
• Beginner paddleboarders/kayakers should go on the water with an instructor or a more experienced person • novice surfers seek expert advice
Tide: Next low tide (1.4m) at
Sunrise:
Sunset:
7 day forecast for Cemlyn (Beach)
Today (15 July 2025)
| Time |
21:00
|
22:00
|
23:00
|
|---|---|---|---|
| Weather symbols |  |
 |
|
| Chance of precipitation |
10%
|
10%
|
10%
|
| Temperature |
16°
|
15°
|
15°
|
| Feels like temperature (°C) |
13°
|
13°
|
13°
|
| Wind direction and speed |
W
15
|
W
14
|
WNW
13
|
| Wind gust (mph) |
25
|
24
|
23
|
| Visibility |
G
|
VG
|
VG
|
| Humidity |
83%
|
85%
|
86%
|
| UV | 1 | - | - |
| Wind direction and speed |
14
|
14
|
13
|
| Height of waves offshore (m) |
0.8
|
0.7
|
0.8
|
| Period of waves offshore (s) |
5
|
4
|
4
|
| Direction of waves offshore |
|
|
|
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%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
20%
|
20%
|
| Temperature (°C) |
15°
|
15°
|
14°
|
14°
|
14°
|
13°
|
13°
|
14°
|
15°
|
16°
|
16°
|
17°
|
18°
|
18°
|
18°
|
19°
|
19°
|
18°
|
18°
|
18°
|
17°
|
16°
|
16°
|
15°
|
| Feels like temperature (°C) |
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
14°
|
15°
|
16°
|
16°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
17°
|
17°
|
16°
|
16°
|
15°
|
| Wind direction and speed (mph) |
WNW
12
|
WNW
12
|
WNW
12
|
WNW
12
|
WNW
11
|
NW
10
|
NW
9
|
NW
8
|
NW
8
|
NW
8
|
NW
7
|
NW
6
|
NW
7
|
NW
7
|
WNW
8
|
WNW
8
|
WNW
7
|
WNW
6
|
W
6
|
W
5
|
SW
4
|
SE
3
|
SE
3
|
SE
3
|
| Wind gust (mph) |
23
|
24
|
23
|
22
|
21
|
19
|
17
|
15
|
14
|
12
|
10
|
9
|
9
|
9
|
9
|
8
|
7
|
7
|
6
|
5
|
6
|
7
|
7
|
7
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
| Humidity |
86%
|
86%
|
85%
|
86%
|
86%
|
87%
|
87%
|
85%
|
82%
|
80%
|
77%
|
75%
|
73%
|
69%
|
67%
|
66%
|
66%
|
66%
|
67%
|
68%
|
73%
|
77%
|
83%
|
85%
|
| UV | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 7 | 6 | 4 | 3 | 2 | 1 | 1 | 1 | - | - |
| Wind direction and speed (mph) |
12
|
12
|
13
|
13
|
12
|
10
|
9
|
9
|
8
|
8
|
7
|
6
|
7
|
7
|
8
|
8
|
7
|
7
|
6
|
5
|
4
|
4
|
3
|
3
|
| Height of waves offshore (m) |
0.8
|
0.9
|
1.0
|
1.0
|
1.0
|
0.9
|
0.9
|
0.8
|
0.8
|
0.8
|
0.7
|
0.6
|
0.6
|
0.6
|
0.5
|
0.5
|
0.4
|
0.4
|
0.4
|
0.3
|
0.2
|
0.2
|
0.2
|
0.2
|
| Period of waves offshore (s) |
4
|
10
|
4
|
4
|
5
|
5
|
5
|
5
|
5
|
5
|
5
|
4
|
4
|
4
|
4
|
8
|
8
|
7
|
7
|
5
|
5
|
3
|
5
|
4
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 |
20%
|
30%
|
40%
|
40%
|
30%
|
10%
|
20%
|
20%
|
20%
|
| Temperature (°C) |
15°
|
15°
|
15°
|
16°
|
17°
|
19°
|
19°
|
18°
|
17°
|
| Feels like temperature (°C) |
15°
|
15°
|
15°
|
15°
|
15°
|
16°
|
17°
|
16°
|
15°
|
| Wind direction and speed (mph) |
SE
4
|
SE
4
|
SSE
7
|
S
9
|
SSW
14
|
SSW
16
|
SSW
16
|
SSW
15
|
SSW
12
|
| Wind gust (mph) |
8
|
11
|
15
|
20
|
22
|
24
|
24
|
21
|
21
|
| Visibility (description) |
G
|
G
|
G
|
M
|
G
|
VG
|
E
|
E
|
VG
|
| Humidity |
86%
|
87%
|
92%
|
98%
|
98%
|
88%
|
84%
|
86%
|
95%
|
| UV | - | - | - | 1 | 2 | 5 | 3 | 1 | - |
| Wind direction and speed (mph) |
4
|
5
|
6
|
10
|
14
|
16
|
16
|
15
|
11
|
| Height of waves offshore (m) |
0.2
|
0.2
|
0.2
|
0.2
|
0.3
|
0.3
|
0.4
|
0.5
|
0.4
|
| Period of waves offshore (s) |
7
|
7
|
8
|
7
|
4
|
5
|
5
|
5
|
5
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
|
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 |
30%
|
30%
|
20%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
16°
|
15°
|
15°
|
17°
|
19°
|
20°
|
18°
|
15°
|
| Feels like temperature (°C) |
15°
|
14°
|
14°
|
16°
|
17°
|
18°
|
17°
|
14°
|
| Wind direction and speed (mph) |
SSW
12
|
SSW
10
|
SSW
10
|
SSW
11
|
SW
11
|
SW
11
|
SW
9
|
S
6
|
| Wind gust (mph) |
19
|
16
|
15
|
14
|
15
|
13
|
11
|
10
|
| Visibility (description) |
VG
|
VG
|
VG
|
E
|
E
|
E
|
E
|
VG
|
| Humidity |
93%
|
94%
|
92%
|
86%
|
75%
|
68%
|
74%
|
93%
|
| UV | - | - | 1 | 4 | 7 | 4 | 1 | - |
| Wind direction and speed (mph) |
12
|
10
|
9
|
11
|
11
|
11
|
9
|
7
|
| Height of waves offshore (m) |
0.4
|
0.4
|
0.4
|
0.3
|
0.2
|
0.2
|
0.2
|
0.2
|
| Period of waves offshore (s) |
5
|
5
|
5
|
5
|
4
|
6
|
6
|
6
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
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%
|
<5%
|
10%
|
20%
|
30%
|
40%
|
30%
|
40%
|
| Temperature (°C) |
14°
|
13°
|
15°
|
17°
|
18°
|
18°
|
17°
|
16°
|
| Feels like temperature (°C) |
13°
|
13°
|
15°
|
17°
|
17°
|
17°
|
16°
|
15°
|
| Wind direction and speed (mph) |
S
5
|
SSE
4
|
SE
5
|
N
7
|
N
9
|
NNE
9
|
N
8
|
NE
6
|
| Wind gust (mph) |
9
|
8
|
9
|
11
|
12
|
10
|
10
|
9
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
93%
|
96%
|
90%
|
77%
|
75%
|
80%
|
81%
|
92%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
| Wind direction and speed (mph) |
6
|
5
|
5
|
7
|
9
|
8
|
8
|
6
|
| Height of waves offshore (m) |
0.2
|
0.2
|
0.1
|
0.1
|
0.2
|
0.3
|
0.6
|
0.7
|
| Period of waves offshore (s) |
5
|
4
|
8
|
2
|
3
|
3
|
4
|
4
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
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%
|
30%
|
40%
|
30%
|
20%
|
20%
|
20%
|
| Temperature (°C) |
15°
|
15°
|
16°
|
18°
|
19°
|
19°
|
19°
|
16°
|
| Feels like temperature (°C) |
15°
|
15°
|
15°
|
17°
|
18°
|
18°
|
17°
|
15°
|
| Wind direction and speed (mph) |
NNE
6
|
N
7
|
NNE
7
|
N
9
|
NNW
11
|
NNW
11
|
WNW
10
|
SSW
9
|
| Wind gust (mph) |
9
|
10
|
12
|
14
|
16
|
16
|
14
|
10
|
| Visibility (description) |
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
G
|
| Humidity |
93%
|
95%
|
93%
|
86%
|
78%
|
78%
|
80%
|
93%
|
| UV | - | - | 1 | 3 | 6 | 4 | 1 | - |
| Wind direction and speed (mph) |
6
|
7
|
7
|
10
|
11
|
11
|
10
|
7
|
| Height of waves offshore (m) |
0.7
|
0.5
|
0.4
|
0.4
|
0.5
|
0.5
|
0.5
|
0.4
|
| Period of waves offshore (s) |
5
|
4
|
4
|
4
|
4
|
5
|
5
|
5
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
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 |
20%
|
20%
|
20%
|
20%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
15°
|
14°
|
16°
|
18°
|
20°
|
20°
|
19°
|
17°
|
| Feels like temperature (°C) |
14°
|
14°
|
15°
|
17°
|
18°
|
19°
|
18°
|
16°
|
| Wind direction and speed (mph) |
W
7
|
W
6
|
WSW
6
|
WSW
9
|
WSW
11
|
WSW
12
|
SW
11
|
SW
8
|
| Wind gust (mph) |
8
|
7
|
13
|
17
|
20
|
18
|
13
|
9
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
G
|
| Humidity |
96%
|
96%
|
94%
|
82%
|
74%
|
72%
|
75%
|
91%
|
| UV | - | - | 1 | 4 | 7 | 4 | 1 | - |
| Wind direction and speed (mph) |
7
|
– | – | – | – | – | – | – |
| Height of waves offshore (m) |
0.3
|
– | – | – | – | – | – | – |
| Period of waves offshore (s) |
5
|
– | – | – | – | – | – | – |
| Direction of waves offshore |
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
Tooltip header
Tide times
Tuesday 15 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 15 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 15 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 15 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 16 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 16 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 16 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 16 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 17 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 17 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 17 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 17 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 18 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 18 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 18 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 18 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 19 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 19 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 19 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 19 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 July
Tide times and heights are from Cemaes Bay tidal station which is 2.5 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Cemlyn (Beach) weather map
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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: