Harlech Castle (Gwynedd) weather

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Forecast days

Today

Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 2° Celsius;

Sunrise: 08:30

Sunset: 16:08

Sunny changing to partly cloudy in the afternoon.

L UV

L Pollution

No pollen data.

Next high tide: 15:27 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Today

Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 2° Celsius;
Tue 30 Dec

Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: -3° Celsius;

Sunrise: 08:30

Sunset: 16:09

Clear.

L UV

L Pollution

No pollen data.

First high tide: 04:02 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Tue 30 Dec

Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: -3° Celsius;
Wed 31 Dec

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: 3° Celsius;

Sunrise: 08:30

Sunset: 16:10

Clear changing to overcast in the afternoon.

L UV

L Pollution

No pollen data.

First high tide: 05:09 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Wed 31 Dec

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: 3° Celsius;
Thu 1 Jan

Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 0° Celsius;

Sunrise: 08:29

Sunset: 16:11

Light rain changing to cloudy by late morning.

L UV

L Pollution

No pollen data.

First high tide: 06:12 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Thu 1 Jan

Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 0° Celsius;
Fri 2 Jan

Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 0° Celsius;

Sunrise: 08:29

Sunset: 16:12

Partly cloudy changing to sunny intervals by late morning.

L UV

L Pollution

No pollen data.

First high tide: 07:09 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Fri 2 Jan

Maximum daytime temperature: 6° Celsius; Minimum nighttime temperature: 0° Celsius;
Sat 3 Jan

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: -1° Celsius;

Sunrise: 08:29

Sunset: 16:13

Overcast.

L UV

No pollution data.

No pollen data.

First high tide: 08:02 for
Harlech (Beach)

Sat 3 Jan

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: -1° Celsius;
Sun 4 Jan

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: -2° Celsius;

Sunrise: 08:29

Sunset: 16:14

Cloudy changing to sunny intervals by lunchtime.

L UV

No pollution data.

No pollen data.

First high tide: 08:50 for
Harlech (Beach)

Sun 4 Jan

Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: -2° Celsius;

Sunny changing to partly cloudy in the afternoon.

Sunrise: 08:30

Sunset: 16:08

L UV

L Pollution

No pollen data.

Next high tide: 15:27 for

Harlech (Beach)

Eryri / Snowdonia (Mountain region)

7 day forecast for Harlech Castle

Today (29 December 2025)

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 symbols
Chance of precipitation	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	4°	5°	6°	6°	6°	5°	4°	3°	3°	3°	3°	4°	4°	4°
Feels like temperature (°C)	2°	3°	4°	4°	4°	3°	2°	1°	1°	1°	1°	2°	2°	2°
Wind direction and speed (mph)	NE 4	NE 4	ENE 5	ENE 6	ENE 6	NE 6	ENE 5	NE 4	NNE 4	NNE 4	NNE 4	NNE 5	NNE 5	NNE 4
Wind gust (mph)	8	10	13	15	15	14	11	9	9	9	10	10	10	10
Visibility (description)	VG	VG	VG	VG	VG	G	G	G	G	G	G	G	G	G
Humidity	82%	75%	72%	67%	66%	75%	79%	83%	84%	84%	84%	84%	85%	85%
UV	1	1	1	1	1	1	1	-	-	-	-	-	-	-

Tuesday (30 December 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)	4°	4°	4°	4°	4°	3°	3°	3°	3°	3°	3°	5°	6°	6°	6°	5°	3°	3°	2°	2°	2°	2°	2°	1°
Feels like temperature (°C)	2°	3°	2°	2°	1°	1°	1°	1°	1°	1°	2°	3°	4°	5°	5°	3°	1°	0°	0°	-1°	-1°	-1°	-1°	-1°
Wind direction and speed (mph)	NNE 5	NNE 5	NNE 5	NE 5	NE 5	NE 5	NE 5	NE 5	NE 5	NE 5	NE 4	NNE 4	NNE 4	NNE 4	NE 5	NNE 5	NE 5	NE 6	NE 6	NE 6	NE 6	NE 5	NE 5	NE 5
Wind gust (mph)	10	10	11	12	13	13	13	13	12	10	8	7	9	10	11	12	12	14	12	12	11	11	9	9
Visibility (description)	G	G	G	G	G	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	86%	86%	87%	86%	85%	85%	84%	84%	84%	82%	77%	74%	69%	63%	65%	74%	76%	79%	79%	78%	79%	79%	80%	79%
UV	-	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-	-

Wednesday (31 December 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)	1°	1°	1°	1°	0°	0°	0°	-1°	-1°	-1°	2°	3°	4°	4°	5°	5°	4°	3°	4°	4°	4°	5°	4°	4°
Feels like temperature (°C)	-1°	-1°	-1°	-2°	-2°	-2°	-2°	-3°	-3°	-2°	0°	2°	3°	3°	4°	3°	3°	2°	2°	2°	2°	2°	2°	2°
Wind direction and speed (mph)	NE 5	NE 5	NE 5	NE 4	NE 4	NE 4	NE 4	NE 4	NE 3	ENE 3	ESE 3	SE 2	S 3	S 3	S 3	SSE 3	SSE 3	S 3	SW 4	WSW 4	WSW 5	WSW 6	W 7	W 7
Wind gust (mph)	9	8	7	7	7	7	7	7	6	5	5	5	5	6	6	6	6	6	7	10	13	16	18	19
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	E	E	E	E
Humidity	80%	79%	78%	79%	81%	82%	83%	84%	85%	86%	83%	75%	75%	76%	78%	85%	86%	86%	86%	85%	82%	78%	78%	77%
UV	-	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-	-

Thursday (1 January 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%	10%	30%	40%	50%	60%	60%	50%	40%	50%	50%	60%	60%	60%	60%	60%	60%	50%	60%	60%	60%
Temperature (°C)	4°	4°	5°	5°	5°	6°	6°	6°	6°	7°	7°	7°	7°	7°	7°	7°	6°	6°	5°	5°	5°	4°	4°	4°
Feels like temperature (°C)	2°	1°	2°	2°	2°	2°	3°	3°	3°	3°	4°	4°	4°	4°	4°	4°	3°	3°	2°	2°	2°	1°	1°	1°
Wind direction and speed (mph)	W 8	W 8	W 8	W 8	W 9	W 9	W 10	W 11	W 11	WNW 11	WNW 11	NW 12	NW 12	NW 12	NW 11	NW 10	NNW 9	NNW 9	NW 8	NNW 8	NNW 8	NNW 8	NNW 7	N 7
Wind gust (mph)	20	20	20	23	25	26	27	28	30	29	29	29	29	29	27	24	21	19	18	16	16	16	15	14
Visibility (description)	E	E	E	E	E	E	E	VG	VG	VG	VG	VG	E	E	E	E	E	E	E	E	E	E	E	E
Humidity	76%	77%	77%	78%	77%	78%	79%	82%	84%	86%	86%	84%	82%	81%	81%	80%	82%	82%	83%	85%	86%	84%	86%	84%
UV	-	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-	-

Friday (2 January 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%	50%	50%	50%	50%	50%	40%	40%	40%	40%	40%	40%	50%	50%	60%	60%	60%	60%	70%	70%	70%	60%	60%	70%
Temperature (°C)	3°	3°	3°	2°	2°	2°	2°	3°	3°	3°	4°	4°	5°	5°	5°	5°	4°	4°	3°	3°	3°	3°	3°	2°
Feels like temperature (°C)	0°	0°	0°	-1°	-1°	-1°	-1°	0°	0°	0°	1°	1°	1°	1°	1°	1°	0°	0°	0°	0°	-1°	-1°	-1°	-1°
Wind direction and speed (mph)	N 7	N 7	NNE 7	N 7	N 6	N 6	N 6	NW 7	W 7	NNW 7	WNW 8	WNW 9	WNW 11	WNW 12	WNW 12	NW 11	NNW 10	NNW 9	N 9	NNW 9	N 9	N 9	NNE 9	NNE 9
Wind gust (mph)	13	14	14	13	12	12	13	13	14	15	18	22	20	26	27	22	20	19	19	19	17	17	19	18
Visibility (description)	E	E	E	E	E	E	E	E	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	86%	87%	86%	87%	87%	88%	89%	85%	86%	85%	85%	83%	80%	81%	81%	84%	85%	87%	87%	87%	88%	89%	88%	88%
UV	-	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-	-

Saturday (3 January 2026)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	40%	40%	40%	30%	40%	40%	30%	30%
Temperature (°C)	2°	2°	2°	2°	4°	4°	2°	2°
Feels like temperature (°C)	-1°	-2°	-2°	-2°	0°	0°	-2°	-2°
Wind direction and speed (mph)	N 9	NNE 9	NNE 9	N 9	NNW 11	NNW 11	NNW 10	NNW 9
Wind gust (mph)	17	18	16	15	18	14	11	10
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	88%	84%	83%	86%	72%	78%	84%	87%
UV	-	-	-	1	1	1	-	-

Sunday (4 January 2026)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	40%	40%	40%	40%	30%	20%	40%	40%
Temperature (°C)	2°	2°	2°	2°	4°	4°	2°	2°
Feels like temperature (°C)	-2°	-2°	-2°	-2°	1°	0°	-2°	-2°
Wind direction and speed (mph)	NNW 9	NNW 9	NNW 9	NNW 9	NNW 11	NNW 11	NNW 11	NNW 10
Wind gust (mph)	10	10	11	13	17	15	12	11
Visibility (description)	VG	G	G	VG	VG	VG	VG	G
Humidity	87%	89%	88%	91%	75%	77%	85%	91%
UV	-	-	-	1	1	1	-	-

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.

UK video forecast

Harlech Castle weather map

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Wales weather forecast

Headline:

Largely dry and cloudy, with sunshine in the west.

Today:

Remaining rather cloudy, with the best of the brightness in the west. Cloud thick enough over the hills for some drizzle, but most places remaining dry. Fairly light winds but feeling chilly after a cold start. Maximum temperature 7 °C.

Tonight:

Remaining cloudy this evening with some patchy light rain sinking southwards overnight. Turning drier and colder behind with some clear spells and a touch of frost. Minimum temperature -1 °C.

Tuesday:

Largely cloudy to start with some rain over the hills. Becoming brighter through the afternoon with sunny spells and light winds. Feeling chilly. Maximum temperature 6 °C.

Outlook for Wednesday to Friday:

A cold and frosty New Year's Eve with sunny spells through the day. Showery rain arriving into New Year's Day with the increased risk of wintry showers. Colder and breezier.

Updated: 04:00 (UTC) on Mon 29 Dec 2025

UK long range weather forecast

Cold northerly winds, initially across Scotland are now expected to become dominant across the whole UK in the first week of January. These will bring wintry showers (often of snow) to many coastlines (and areas just inland of these) that are exposed to onshore winds. Subtle day-to-day changes in wind direction from northeast to northwest will change the places most exposed to the showers, but many inland locations across central and southern areas will remain mostly dry but cold. There are likely to be some more coherent bands of rain, sleet and snow working south, and these may bring a risk of more prolonged wintry precipitation affecting some inland areas. Towards the second half of this period, slightly milder conditions will attempt to move in from the west.

Updated: 14:00 (UTC) on Sun 28 Dec 2025

Whilst confidence in details is low, by the start of this period the transition back to westerly winds bringing Atlantic weather systems into the UK is expected to be complete, with temperatures most likely recovering to around average. There is perhaps a weak signal for slowly evolving weather patterns to be more favoured than normal, such patterns increase the chances of frost and fog above normal by night.

Updated: 15:00 (UTC) on Sun 28 Dec 2025

Harlech Castle (Gwynedd) weather

Find a forecast

Forecast days

Today

Today

Tue 30 Dec

Tue 30 Dec

Wed 31 Dec

Wed 31 Dec

Thu 1 Jan

Thu 1 Jan

Fri 2 Jan

Fri 2 Jan

Sat 3 Jan

Sat 3 Jan

Sun 4 Jan

Sun 4 Jan

7 day forecast for Harlech Castle

Tooltip header

Wind and rain marking a change in the UK weather

UK video forecast

Wales weather forecast

Headline:

Today:

Tonight:

Tuesday:

Outlook for Wednesday to Friday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

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8 interesting facts about autumn

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2012 - a wet year

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Harlech Castle (Gwynedd) weather

Find a forecast

Forecast days

Today

Today

Tue 30 Dec

Tue 30 Dec

Wed 31 Dec

Wed 31 Dec

Thu 1 Jan

Thu 1 Jan

Fri 2 Jan

Fri 2 Jan

Sat 3 Jan

Sat 3 Jan

Sun 4 Jan

Sun 4 Jan

7 day forecast for Harlech Castle

Wind and rain marking a change in the UK weather

UK video forecast

Wales weather forecast

Monday 29 Dec - Friday 2 Jan

Headline:

Today:

Tonight:

Tuesday:

Outlook for Wednesday to Friday:

UK long range weather forecast

Friday 2 Jan - Sunday 11 Jan

Monday 12 Jan - Monday 26 Jan

Nearest forecasts

More from the Met Office

Causes of climate change

6 facts about the winter solstice

8 interesting facts about autumn

July 2013 heat wave

2012 - a wet year

4 tips for staying safe in ice