Cemlyn (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
-
Today. Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Heavy showers changing to sunny by early evening. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.Today. Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Heavy showers changing to sunny by early evening. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.
-
Friday 22 September. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Heavy rain changing to cloudy in the afternoon. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.Friday 22 September. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Heavy rain changing to cloudy in the afternoon. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.
-
Saturday 23 September. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.Saturday 23 September. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.
-
Sunday 24 September. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius. Heavy rain. Sunrise: ; Sunset: . UV: Low; Pollution: Low; No pollen data.Sunday 24 September. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius. Heavy rain. Sunrise: ; Sunset: . UV: Low; Pollution: Low; No pollen data.
-
Monday 25 September. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Clear changing to partly cloudy by nighttime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.Monday 25 September. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Clear changing to partly cloudy by nighttime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; No pollen data.
-
Tuesday 26 September. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Cloudy changing to heavy showers by late morning. Sunrise: ; Sunset: . UV: Moderate;Tuesday 26 September. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Cloudy changing to heavy showers by late morning. Sunrise: ; Sunset: . UV: Moderate;
-
Wednesday 27 September. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Light showers changing to overcast in the afternoon. Sunrise: ; Sunset: . UV: Moderate;Wednesday 27 September. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Light showers changing to overcast in the afternoon. Sunrise: ; Sunset: . UV: Moderate;
Seven day forecast for Cemlyn (Beach)
| Time | 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 symbol |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
70% | 70% | 10% | 30% | <5% | 40% | 10% | <5% | <5% | <5% | <5% | 40% | 10% | 10% |
|
|
12°
|
12°
|
14°
|
14°
|
14°
|
13°
|
14°
|
14°
|
13°
|
12°
|
11°
|
12°
|
12°
|
12°
|
|
|
11° | 11° | 13° | 13° | 13° | 12° | 12° | 12° | 12° | 10° | 10° | 10° | 10° | 10° |
|
|
WSW
8
|
WSW
7
|
WSW
5
|
W
8
|
WNW
8
|
W
9
|
W
9
|
W
8
|
WSW
8
|
WSW
8
|
SW
9
|
WSW
13
|
W
12
|
W
12
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 | 9 | 7 | 10 | 10 | 12 | 12 | 10 | 11 | 12 | 14 | 19 | 17 | 18 |
|
|
0.5 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.3 | 0.3 | 0.3 | 0.4 | 0.5 | 0.5 |
|
|
9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 6 | 6 |
|
Direction of waves offshore
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
M | G | E | E | E | G | E | E | E | E | VG | G | E | E |
|
Humidity
|
81% | 83% | 75% | 72% | 68% | 72% | 71% | 67% | 71% | 80% | 83% | 82% | 81% | 79% |
|
UV
|
2 | 3 | 3 | 4 | 3 | 2 | 2 | 1 | 1 | 1 | - | - | - | - |
| 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 symbol |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
50% | 10% | 60% | 30% | 10% | 40% | 30% | 30% | 80% | 50% | 60% | 30% | 10% | 10% | 40% | 20% | 10% | 10% | <5% | <5% | 40% | 10% | <5% | 10% |
|
|
13°
|
13°
|
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
13°
|
13°
|
13°
|
14°
|
14°
|
14°
|
14°
|
14°
|
13°
|
13°
|
13°
|
13°
|
12°
|
12°
|
|
|
10° | 10° | 10° | 10° | 9° | 9° | 9° | 9° | 9° | 9° | 9° | 9° | 9° | 10° | 10° | 9° | 9° | 9° | 9° | 9° | 9° | 9° | 9° | 9° |
|
|
W
16
|
WNW
16
|
WNW
16
|
WNW
17
|
WNW
17
|
WNW
18
|
NW
20
|
NW
20
|
NW
23
|
NW
23
|
NW
22
|
NW
24
|
NW
24
|
NW
24
|
NW
22
|
NW
25
|
NNW
25
|
NW
23
|
NNW
23
|
NW
22
|
NNW
22
|
NNW
21
|
NNW
20
|
NNW
18
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
21 | 21 | 21 | 23 | 23 | 24 | 27 | 27 | 31 | 31 | 31 | 33 | 33 | 33 | 31 | 34 | 34 | 32 | 32 | 31 | 30 | 29 | 28 | 26 |
|
|
0.5 | 0.6 | 0.6 | 0.7 | 0.7 | 0.8 | 0.8 | 0.9 | 0.9 | 1.1 | 1.2 | 1.3 | 1.3 | 1.3 | 1.3 | 1.4 | 1.4 | 1.5 | 1.6 | 1.7 | 1.7 | 1.7 | 1.7 | 1.5 |
|
|
4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 |
|
Direction of waves offshore
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
E | E | E | E | E | VG | VG | VG | G | VG | VG | VG | VG | VG | E | E | E | VG | E | E | E | E | E | E |
|
Humidity
|
80% | 83% | 84% | 82% | 82% | 84% | 83% | 83% | 84% | 81% | 81% | 80% | 76% | 72% | 71% | 72% | 68% | 65% | 66% | 66% | 67% | 67% | 67% | 66% |
|
UV
|
- | - | - | - | - | - | - | - | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | - | - | - | - |
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
<5% | <5% | <5% | 10% | <5% | 10% | <5% | 10% | 10% |
|
|
12°
|
12°
|
11°
|
11°
|
13°
|
14°
|
14°
|
14°
|
15°
|
|
|
9° | 9° | 9° | 9° | 11° | 11° | 11° | 11° | 11° |
|
|
NW
18
|
NW
17
|
NW
13
|
NW
10
|
W
7
|
SW
12
|
SSW
16
|
S
17
|
S
21
|
|
|
|
|
|
|
|
|
|
|
|
|
|
24 | 24 | 19 | 14 | 12 | 20 | 25 | 27 | 35 |
|
|
1.4 | 1.4 | 1.1 | 0.8 | 0.6 | 0.5 | 0.4 | 0.4 | 0.7 |
|
|
6 | 6 | 6 | 5 | 5 | 5 | 3 | 4 | 5 |
|
Direction of waves offshore
|
|
|
|
|
|
|
|
|
|
|
|
E | E | VG | VG | VG | VG | VG | VG | VG |
|
Humidity
|
66% | 67% | 67% | 72% | 62% | 58% | 59% | 69% | 76% |
|
UV
|
- | - | - | - | 2 | 3 | 1 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
50% | 80% | 90% | 90% | 70% | 40% | 90% | 90% |
|
|
15°
|
16°
|
16°
|
17°
|
17°
|
17°
|
16°
|
17°
|
|
|
11° | 11° | 12° | 12° | 12° | 12° | 11° | 11° |
|
|
S
24
|
S
25
|
SSW
24
|
S
25
|
S
27
|
S
28
|
S
29
|
S
28
|
|
|
|
|
|
|
|
|
|
|
|
|
40 | 40 | 39 | 41 | 45 | 47 | 47 | 46 |
|
|
0.9 | 1.2 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.7 |
|
|
7 | 8 | 8 | 8 | 9 | 9 | 9 | 10 |
|
Direction of waves offshore
|
|
|
|
|
|
|
|
|
|
|
G | M | M | M | G | G | M | M |
|
Humidity
|
86% | 92% | 92% | 92% | 87% | 83% | 87% | 89% |
|
UV
|
- | - | - | 1 | 2 | 1 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
40% | 30% | 10% | 10% | 10% | 10% | <5% | <5% |
|
|
16°
|
16°
|
15°
|
16°
|
17°
|
17°
|
16°
|
15°
|
|
|
12° | 12° | 12° | 12° | 13° | 12° | 12° | 12° |
|
|
SSW
24
|
SSW
21
|
SSW
19
|
SSW
22
|
SSW
23
|
SSW
24
|
SSW
21
|
SSW
19
|
|
|
|
|
|
|
|
|
|
|
|
|
38 | 33 | 31 | 36 | 40 | 40 | 34 | 30 |
|
|
1.6 | 1.2 | 1.1 | 1.1 | 1.1 | 1.1 | 1.0 | 0.9 |
|
|
10 | 10 | 10 | 10 | 7 | 7 | 7 | 7 |
|
Direction of waves offshore
|
|
|
|
|
|
|
|
|
|
|
G | G | VG | VG | VG | VG | VG | VG |
|
Humidity
|
90% | 91% | 90% | 83% | 76% | 76% | 84% | 87% |
|
UV
|
- | - | - | 2 | 3 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
<5% | <5% | 10% | 50% | 60% | 30% | 10% | 10% |
|
|
15°
|
15°
|
14°
|
16°
|
17°
|
16°
|
15°
|
15°
|
|
|
12° | 12° | 12° | 12° | 13° | 13° | 12° | 12° |
|
|
SSW
18
|
SSW
17
|
SSW
17
|
SSW
19
|
SSW
19
|
SSW
19
|
SSW
18
|
SSW
18
|
|
|
|
|
|
|
|
|
|
|
|
|
28 | 27 | 26 | 30 | 33 | 32 | 28 | 28 |
|
|
0.7 | 0.7 | 0.6 | 0.7 | 0.7 | 0.7 | 0.6 | 0.5 |
|
|
7 | 7 | 7 | 7 | 7 | 7 | 5 | 6 |
|
Direction of waves offshore
|
|
|
|
|
|
|
|
|
|
|
VG | VG | G | G | VG | VG | VG | VG |
|
Humidity
|
87% | 88% | 88% | 83% | 75% | 77% | 85% | 87% |
|
UV
|
- | - | - | 2 | 3 | 1 | - | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 40% | 40% | 40% | 40% | 20% | 50% |
|
|
14°
|
14°
|
14°
|
15°
|
16°
|
16°
|
15°
|
14°
|
|
|
11° | 11° | 11° | 12° | 12° | 12° | 11° | 11° |
|
|
SSW
18
|
SSW
18
|
SSW
18
|
SSW
20
|
SSW
22
|
SSW
22
|
SSW
20
|
SSW
20
|
|
|
|
|
|
|
|
|
|
|
|
|
28 | 28 | 29 | 34 | 37 | 37 | 32 | 32 |
|
|
0.5 | – | – | – | – | – | – | – |
|
|
6 | – | – | – | – | – | – | – |
|
Direction of waves offshore
|
|
– | – | – | – | – | – | – |
|
|
G | G | G | G | G | VG | G | G |
|
Humidity
|
88% | 86% | 87% | 81% | 75% | 75% | 81% | 84% |
|
UV
|
- | - | - | 1 | 3 | 1 | - | - |
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail and drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
The arrow shows the direction of the wind (up is north). If the arrow points from land to sea, the wind will be blowing out to sea (‘offshore’). The number is the average wind speed.
Beware of offshore winds if you are using inflatables, paddle boards or kayaks. These winds can blow you out to sea. Read more about how wind will affect you at the beach.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Moderate) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
This is the average height of the waves, 1-2 miles out to sea. The height of the waves can vary. The individual waves out to sea or at the beach can be higher than this number. If you are close to the water, keep an eye on the waves to stop you or your belongings being swept away.
Read more about calculating the expected height of the waves at the beach.
This is the average number of seconds between one wave and the next, 1-2 miles out to sea. A long wave period (more than 10 seconds) means the waves at the beach may be more powerful. Lifeguards can give you advice on waves if you’re planning to go into the water.
Read more about the period of waves.
The arrow shows the average direction of the waves 1-2 miles out to sea. It indicates how sheltered the beach will be from these waves. If the arrow points towards land, most of the waves’ power will reach the beach. If the arrow is parallel to or pointing away from land, the wave height is likely to be lower on the beach than it is offshore.
Lifeguards can give you advice on waves if you’re planning to go into the water.
Tide times
Time © Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
UK video forecast
Wales weather forecast
Headline:
Mixture of sunshine and scattered showers, with lighter winds.
Today:
A fresh start with showers mainly confined to the north and west during the morning. Showers then becoming more widespread into the afternoon, turning heavy and thundery at times with sunny spells in between. Lighter winds than of late. Maximum temperature 18 °C.
Tonight:
Some showers continuing through this evening and overnight, with clear intervals at times. Feeling rather cool with winds generally light. Minimum temperature 8 °C.
Friday:
Another day of sunshine and scattered showers, though less intense than Thursday and easing by the evening. Turning breezy at times and chilly overnight. Maximum temperature 17 °C.
Outlook for Saturday to Monday:
Largely fine on Saturday with sunny spells after a chilly start. Cloudier and breezier on Sunday and Monday with some outbreaks of rain possible, heaviest in the west. Becoming warmer.
Updated:
UK long range weather forecast
Monday will see cloud and outbreaks of rain slowly moving southeast, with drier conditions ahead of this, and sunny spells and showers to the northwest. After this, confidence reduces; however further areas of low pressure are likely to move towards the UK. Northwestern areas are most prone to spells of rain and wind, while the southeast has the best chance of some drier spells, which may temporarily extend further north at times. Temperatures are likely to be generally above average, especially towards the south. Towards the end of this period, a similar theme is likely to persist, with the greatest chance of unsettled conditions towards the northwest, while central and southern areas have a greater chance of drier spells. Temperatures are likely to remain generally above average.
Updated:
Through early to mid October, generally blocked weather patterns are more likely than average, however there is significant uncertainty around the detail and resultant conditions over the UK. A typical mix of autumnal conditions may occur at times, although drier than average conditions are slightly more likely than wetter than average conditions over this period as a whole. Above average temperatures also continue to be more likely than below average temperatures, although cool nights, along with patchy mist and fog are probable during settled spells.
Updated:
