Alwen Reservoir (Denbighshire) weather

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Forecast days

Today

Maximum daytime temperature: 2° Celsius; Minimum nighttime temperature: -4° Celsius;

Sunrise: 07:36

Sunset: 17:21

Yellow weather warning.

L UV

L Pollution

No pollen data.

Today

Maximum daytime temperature: 2° Celsius; Minimum nighttime temperature: -4° Celsius;
Sat 14 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: -1° Celsius;

Sunrise: 07:34

Sunset: 17:23

Yellow weather warning.

L UV

L Pollution

No pollen data.

Sat 14 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: -1° Celsius;
Sun 15 Feb

Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 2° Celsius;

Sunrise: 07:32

Sunset: 17:25

Cloudy changing to light rain by late morning.

L UV

L Pollution

No pollen data.

Sun 15 Feb

Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 2° Celsius;
Mon 16 Feb

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: 0° Celsius;

Sunrise: 07:30

Sunset: 17:27

Light showers changing to partly cloudy by early evening.

L UV

L Pollution

No pollen data.

Mon 16 Feb

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: 0° Celsius;
Tue 17 Feb

Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: -1° Celsius;

Sunrise: 07:28

Sunset: 17:29

Partly cloudy changing to sunny intervals by late morning.

L UV

L Pollution

No pollen data.

Tue 17 Feb

Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: -1° Celsius;
Wed 18 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: 0° Celsius;

Sunrise: 07:26

Sunset: 17:31

Cloudy changing to mist in the afternoon.

L UV

No pollution data.

No pollen data.

Wed 18 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: 0° Celsius;
Thu 19 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: -1° Celsius;

Sunrise: 07:24

Sunset: 17:33

Overcast.

L UV

No pollution data.

No pollen data.

Thu 19 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: -1° Celsius;

Yellow weather warning.

Sunrise: 07:36

Sunset: 17:21

L UV

L Pollution

No pollen data.

Yellow warning: Ice

7 day forecast for Alwen Reservoir

Today (13 February 2026)

Time	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	30%	<5%	<5%	<5%
Temperature (°C)	0°	0°	0°	-1°
Feels like temperature (°C)	-4°	-4°	-4°	-4°
Wind direction and speed (mph)	NNE 9	NNE 8	NNE 7	NNE 7
Wind gust (mph)	24	22	20	17
Visibility (description)	VG	VG	VG	VG
Humidity	88%	88%	87%	87%
UV	-	-	-	-

Saturday (14 February 2026)

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%	10%	30%	20%	20%	20%	10%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	10%	20%	50%	80%
Temperature (°C)	-1°	-2°	-2°	-3°	-3°	-3°	-3°	-3°	-2°	0°	1°	2°	3°	3°	3°	3°	2°	1°	1°	1°	1°	1°	1°	0°
Feels like temperature (°C)	-5°	-5°	-5°	-6°	-6°	-6°	-6°	-6°	-5°	-2°	-1°	1°	1°	1°	1°	0°	0°	-1°	-2°	-3°	-3°	-4°	-4°	-5°
Wind direction and speed (mph)	N 6	N 5	NNW 5	NNW 5	NW 5	WNW 4	WNW 4	WNW 4	W 4	W 3	W 3	W 3	W 4	WSW 5	SW 5	SW 6	SSW 6	SSW 6	S 6	S 7	S 9	S 10	S 11	S 12
Wind gust (mph)	15	13	12	11	11	10	10	11	10	10	10	11	12	13	14	13	12	13	16	20	23	26	28	30
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	G	M
Humidity	87%	89%	91%	91%	91%	90%	89%	88%	87%	86%	81%	75%	67%	65%	65%	65%	71%	76%	76%	74%	72%	71%	74%	77%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Sunday (15 February 2026)

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	90%	≥95%	≥95%	≥95%	90%	80%	60%	40%	30%	50%	50%	70%	70%	80%	80%	70%	50%	40%	50%	60%	70%	60%	60%	60%
Temperature (°C)	0°	0°	0°	1°	1°	2°	3°	4°	4°	5°	6°	6°	6°	6°	6°	5°	5°	5°	4°	4°	4°	4°	4°	4°
Feels like temperature (°C)	-5°	-5°	-5°	-4°	-3°	-2°	-1°	0°	1°	2°	2°	3°	3°	3°	2°	2°	1°	1°	1°	1°	0°	0°	0°	0°
Wind direction and speed (mph)	SSE 12	SSE 12	S 11	S 11	S 10	SSW 10	SW 10	SW 9	SW 9	SW 9	SW 10	SW 10	SW 10	SW 11	SW 11	WSW 11	WSW 11	WSW 11	WSW 11	WSW 11	W 11	W 11	WSW 12	W 12
Wind gust (mph)	31	32	32	32	31	29	25	22	22	23	25	27	28	27	28	26	25	25	23	23	24	26	28	28
Visibility (description)	M	M	P	M	M	M	M	M	M	M	G	G	G	G	G	G	G	G	G	G	G	G	G	G
Humidity	91%	92%	94%	94%	94%	94%	96%	98%	97%	96%	94%	91%	89%	88%	88%	90%	91%	91%	92%	93%	92%	92%	92%	92%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Monday (16 February 2026)

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	50%	60%	70%	70%	70%	70%	70%	80%	80%	70%	70%	60%	70%	60%	50%	60%	60%	60%	50%	50%	40%	30%	30%	30%
Temperature (°C)	4°	4°	4°	3°	3°	3°	3°	3°	3°	4°	4°	4°	5°	5°	5°	5°	4°	4°	4°	3°	3°	3°	3°	2°
Feels like temperature (°C)	0°	0°	-1°	-1°	-1°	-1°	-1°	-1°	-1°	-1°	0°	0°	0°	1°	1°	1°	0°	0°	-1°	-1°	-1°	-1°	-1°	-2°
Wind direction and speed (mph)	W 12	W 12	W 12	W 12	W 12	W 12	W 11	W 12	W 12	W 12	W 12	W 13	W 13	WNW 13	WNW 13	WNW 13	WNW 12	WNW 12	WNW 11	WNW 11	WNW 11	WNW 11	WNW 10	WNW 10
Wind gust (mph)	29	30	30	30	30	30	30	30	30	31	32	32	33	34	32	34	34	30	30	30	28	29	28	27
Visibility (description)	G	G	G	G	G	G	G	G	G	G	G	G	G	G	VG	VG	VG	G	VG	VG	VG	VG	VG	VG
Humidity	91%	91%	92%	92%	91%	90%	91%	91%	91%	91%	88%	88%	85%	85%	84%	83%	82%	85%	85%	84%	84%	84%	86%	85%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Tuesday (17 February 2026)

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	30%	30%	30%	30%	30%	20%	20%	10%	10%	10%	10%	10%	10%	<5%	<5%	<5%	10%	10%	10%	10%	20%	30%	30%	30%
Temperature (°C)	2°	2°	2°	2°	1°	1°	1°	0°	0°	1°	2°	3°	3°	3°	4°	3°	3°	2°	1°	1°	1°	1°	1°	1°
Feels like temperature (°C)	-2°	-2°	-2°	-2°	-2°	-2°	-2°	-3°	-3°	-1°	0°	0°	1°	1°	1°	1°	0°	-1°	-2°	-2°	-3°	-3°	-3°	-3°
Wind direction and speed (mph)	WNW 10	WNW 9	NW 9	NW 8	NW 7	NW 7	NW 6	NW 6	NNW 5	NNW 5	N 6	NNE 6	NE 6	NE 6	ENE 6	E 6	E 6	E 6	E 6	E 6	E 6	E 7	E 8	ESE 8
Wind gust (mph)	27	26	22	21	21	19	18	18	16	15	17	15	16	15	16	16	16	13	15	15	16	18	19	20
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	G	G
Humidity	85%	86%	87%	86%	88%	88%	86%	86%	85%	82%	75%	67%	65%	62%	61%	62%	66%	73%	77%	77%	79%	78%	78%	79%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Wednesday (18 February 2026)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	30%	30%	30%	30%	30%	30%	40%	40%
Temperature (°C)	0°	0°	0°	1°	2°	3°	2°	1°
Feels like temperature (°C)	-4°	-4°	-4°	-3°	-2°	-2°	-3°	-3°
Wind direction and speed (mph)	ESE 9	ESE 9	ESE 8	ESE 9	ESE 11	ESE 11	E 10	E 10
Wind gust (mph)	23	23	21	24	25	25	26	27
Visibility (description)	G	G	G	G	G	G	M	M
Humidity	83%	86%	88%	85%	78%	78%	86%	90%
UV	-	-	-	1	1	1	-	-

Thursday (19 February 2026)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	40%	30%	30%	20%	20%	20%	10%	10%
Temperature (°C)	1°	1°	1°	1°	2°	3°	2°	2°
Feels like temperature (°C)	-4°	-4°	-4°	-4°	-2°	-2°	-2°	-2°
Wind direction and speed (mph)	E 11	ENE 12	ENE 12	ENE 12	NE 13	NNE 12	NNE 10	N 8
Wind gust (mph)	26	27	27	30	30	28	22	20
Visibility (description)	M	M	M	M	M	G	G	G
Humidity	91%	88%	88%	80%	71%	70%	76%	77%
UV	-	-	-	1	1	1	-	-

News

A sunny but cold Valentine's Day for many

Colder air is pushing south across the UK, bringing a brief settled spell for Saturday before further rain and wintry hazards arrive later.

UK video forecast

Alwen Reservoir weather map

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WARNING

Flood alerts in force for Wales

Natural Resources Wales

Wales weather forecast

Headline:

Frosty and icy overnight. Early sunshine on Saturday.

This Evening and Tonight:

A damp and breezy end to Friday with rain and hill snow clearing away to the south. Turning drier overnight as winds ease and skies gradually clear, resulting in a widespread frost and some icy stretches. Minimum temperature -3 °C.

Saturday:

A frosty, cold but bright start with light winds. Sunshine turning increasingly hazy through the day before it turns wet and windy from the west by evening. Maximum temperature 6 °C.

Outlook for Sunday to Tuesday:

Rain and hills snow clearing Saturday night and into Sunday with blustery showers following. Sunny spells and showers on Monday then somewhat drier on Tuesday. Winds easing again.

Updated: 16:00 (UTC) on Fri 13 Feb 2026

UK long range weather forecast

Showers or longer spells of rain as well as occasional strong winds are most likely as Atlantic low pressure systems dominate in the vicinity of the UK. Some heavy rain is likely in places, with some snow at times in the north, mainly on high ground. Temperatures varying from around average to cold at times, especially in the north. While unsettled weather is likely to dominate, there will be some drier interludes between weather systems. Later in the period, there is a chance that more prolonged drier and settled conditions may begin to develop.

Updated: 14:00 (UTC) on Fri 13 Feb 2026

Alwen Reservoir (Denbighshire) weather

Find a forecast

Forecast days

Today

Today

Sat 14 Feb

Sat 14 Feb

Sun 15 Feb

Sun 15 Feb

Mon 16 Feb

Mon 16 Feb

Tue 17 Feb

Tue 17 Feb

Wed 18 Feb

Wed 18 Feb

Thu 19 Feb

Thu 19 Feb

7 day forecast for Alwen Reservoir

Tooltip header

A sunny but cold Valentine's Day for many

UK video forecast

Wales weather forecast

Headline:

This Evening and Tonight:

Saturday:

Outlook for Sunday to Tuesday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

Causes of climate change

Wind flow

Weather warriors - lesson plan

Regional case studies

3 tips for staying safe in fog

My Summer – Network Rail National Weather Specialist, Peter McCreery

Alwen Reservoir (Denbighshire) weather

Find a forecast

Forecast days

Today

Today

Sat 14 Feb

Sat 14 Feb

Sun 15 Feb

Sun 15 Feb

Mon 16 Feb

Mon 16 Feb

Tue 17 Feb

Tue 17 Feb

Wed 18 Feb

Wed 18 Feb

Thu 19 Feb

Thu 19 Feb

7 day forecast for Alwen Reservoir

A sunny but cold Valentine's Day for many

UK video forecast

Wales weather forecast

Friday 13 Feb - Tuesday 17 Feb

Headline:

This Evening and Tonight:

Saturday:

Outlook for Sunday to Tuesday:

UK long range weather forecast

Wednesday 18 Feb - Friday 27 Feb

Saturday 28 Feb - Saturday 14 Mar

Nearest forecasts

More from the Met Office

Causes of climate change

Wind flow

Weather warriors - lesson plan

Regional case studies

3 tips for staying safe in fog

My Summer – Network Rail National Weather Specialist, Peter McCreery