Harlech (Gwynedd) weather

Find a forecast

Forecast days

Today

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 06:53

Sunset: 19:29

Sunny intervals changing to cloudy by early evening.

M UV

L Pollution

No pollen data.

Next high tide: 16:50 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Today

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 12° Celsius;
Wed 17 Sep

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 06:54

Sunset: 19:26

Yellow weather warning.

M UV

L Pollution

No pollen data.

First high tide: 05:46 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Wed 17 Sep

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 15° Celsius;
Thu 18 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 06:56

Sunset: 19:24

Light rain.

L UV

L Pollution

No pollen data.

First high tide: 07:04 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Thu 18 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 15° Celsius;
Fri 19 Sep

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 06:58

Sunset: 19:21

Light rain changing to cloudy by early evening.

L UV

L Pollution

No pollen data.

First high tide: 07:54 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Fri 19 Sep

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 12° Celsius;
Sat 20 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 9° Celsius;

Sunrise: 06:59

Sunset: 19:19

Cloudy changing to light showers by lunchtime.

M UV

L Pollution

No pollen data.

First high tide: 08:33 for
Harlech (Beach)

Eryri / Snowdonia (Mountain region)

Sat 20 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 9° Celsius;
Sun 21 Sep

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 6° Celsius;

Sunrise: 07:01

Sunset: 19:17

Sunny intervals changing to cloudy by lunchtime.

M UV

No pollution data.

No pollen data.

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

Sun 21 Sep

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 6° Celsius;
Mon 22 Sep

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 6° Celsius;

Sunrise: 07:03

Sunset: 19:14

Sunny intervals changing to cloudy by late morning.

M UV

No pollution data.

No pollen data.

First high tide: 09:39 for
Harlech (Beach)

Mon 22 Sep

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 6° Celsius;

Sunny intervals changing to cloudy by early evening.

Sunrise: 06:53

Sunset: 19:29

M UV

L Pollution

No pollen data.

Next high tide: 16:50 for

Harlech (Beach)

Eryri / Snowdonia (Mountain region)

7 day forecast for Harlech

Today (16 September 2025)

Time	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	20%	30%	40%	30%	30%	50%	80%	≥95%
Temperature (°C)	15°	15°	15°	14°	14°	14°	14°	13°
Feels like temperature (°C)	13°	12°	12°	12°	12°	12°	12°	12°
Wind direction and speed (mph)	WSW 14	SW 14	WSW 13	SW 12	SW 11	SW 10	SW 10	SSW 10
Wind gust (mph)	27	27	25	23	21	20	21	23
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	G
Humidity	68%	72%	75%	76%	76%	77%	83%	88%
UV	1	1	1	1	-	-	-	-

Wednesday (17 September 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	≥95%	≥95%	≥95%	≥95%	≥95%	≥95%	≥95%	≥95%	≥95%	90%	80%	70%	60%	50%	50%	40%	40%	50%	40%	40%	40%	50%	50%	60%
Temperature (°C)	13°	13°	13°	13°	14°	14°	15°	15°	16°	16°	16°	16°	16°	17°	17°	17°	16°	16°	16°	16°	16°	15°	16°	16°
Feels like temperature (°C)	11°	10°	10°	10°	10°	10°	11°	11°	12°	12°	12°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°
Wind direction and speed (mph)	S 11	S 12	SSE 14	SSE 16	SSE 19	S 23	S 25	SSW 24	SSW 23	SW 22	SW 21	SW 21	SW 21	SW 21	SW 20	SW 20	SW 19	SSW 19	SSW 18	SSW 18	SSW 16	SSW 16	SSW 16	SSW 16
Wind gust (mph)	23	25	28	32	36	41	41	41	39	37	37	37	37	36	36	36	36	34	32	29	30	29	27	27
Visibility (description)	M	M	P	P	P	P	P	P	M	M	G	VG	VG	E	E	E	E	E	E	E	E	E	E	E
Humidity	94%	94%	93%	93%	93%	93%	93%	96%	97%	97%	97%	97%	98%	97%	97%	96%	96%	96%	96%	96%	95%	96%	95%	95%
UV	-	-	-	-	-	-	1	1	1	1	1	1	2	2	2	2	1	1	1	1	-	-	-	-

Thursday (18 September 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	70%	80%	90%	90%	90%	90%	80%	80%	80%	70%	70%	70%	60%	60%	60%	60%	60%	50%	60%	60%	70%	60%	60%	60%
Temperature (°C)	16°	16°	16°	16°	16°	16°	16°	16°	16°	16°	16°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	16°
Feels like temperature (°C)	13°	13°	13°	13°	13°	13°	13°	13°	12°	12°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°
Wind direction and speed (mph)	SSW 16	SSW 16	SSW 16	SSW 16	SSW 17	SSW 19	SSW 21	SSW 21	SSW 22	SSW 22	SSW 22	SSW 22	SSW 23	SSW 23	SSW 23	SSW 23	SSW 22	SSW 22	SSW 22	SSW 22	SSW 21	SSW 21	SSW 21	SSW 21
Wind gust (mph)	27	25	26	26	28	34	38	39	41	41	39	39	39	38	38	38	37	36	35	35	35	35	35	35
Visibility (description)	E	E	G	P	P	M	G	G	G	G	G	G	G	G	G	G	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	96%	97%	98%	99%	99%	99%	98%	97%	96%	95%	94%	93%	93%	93%	94%	94%	92%	93%	93%	93%	94%	93%	93%	92%
UV	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-

Friday (19 September 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	60%	50%	60%	60%	60%	50%	60%	60%	60%	70%	60%	50%	50%	50%	50%	60%	50%	60%	50%	50%	40%	30%	40%	40%
Temperature (°C)	16°	16°	16°	16°	16°	16°	16°	15°	15°	15°	15°	16°	16°	16°	16°	16°	16°	15°	15°	15°	15°	14°	14°	14°
Feels like temperature (°C)	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	14°	14°	14°	14°	14°	14°	13°	13°	13°	13°	13°	13°
Wind direction and speed (mph)	SSW 21	SSW 20	SSW 19	SSW 19	SSW 18	SSW 17	SSW 16	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SW 14	SW 14	SW 13	SSW 12	SSW 12	SSW 11	SSW 10	SSW 9	SSW 8	SW 8
Wind gust (mph)	35	35	33	30	28	24	21	18	18	23	22	21	19	17	15	18	19	18	15	15	15	13	13	14
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	92%	92%	92%	91%	93%	95%	94%	94%	93%	93%	92%	90%	87%	88%	88%	88%	87%	90%	91%	92%	92%	93%	92%	91%
UV	-	-	-	-	-	-	1	1	1	1	1	1	2	2	2	1	1	1	1	1	-	-	-	-

Saturday (20 September 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	50%	50%	40%	40%	40%	40%	30%	30%	30%	40%	40%	40%	50%	60%	50%	50%	50%	60%	50%	50%	60%	60%	60%	60%
Temperature (°C)	14°	14°	14°	13°	13°	13°	13°	13°	13°	13°	14°	14°	14°	14°	14°	14°	14°	14°	14°	13°	12°	12°	12°	11°
Feels like temperature (°C)	13°	13°	13°	12°	12°	12°	12°	11°	11°	12°	12°	13°	13°	13°	13°	13°	13°	12°	12°	11°	11°	10°	10°	10°
Wind direction and speed (mph)	SSW 7	SW 7	SW 7	SW 7	SW 7	WSW 7	WSW 7	SW 7	WNW 7	NW 7	WNW 8	WNW 9	WNW 10	WNW 10	WNW 10	NW 10	NW 10	NNW 10	NNW 10	N 9	N 9	N 8	N 8	N 9
Wind gust (mph)	14	12	11	11	12	11	12	13	11	14	14	14	14	17	19	17	17	17	18	16	16	16	17	18
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	E	E	E	E	E	VG	VG	VG	VG	VG	VG	VG
Humidity	90%	91%	90%	87%	86%	86%	87%	86%	87%	84%	83%	80%	77%	77%	76%	73%	74%	76%	78%	82%	84%	85%	86%	87%
UV	-	-	-	-	-	-	1	1	1	1	2	2	3	2	2	2	1	1	1	1	-	-	-	-

Sunday (21 September 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	60%	60%	50%	40%	30%	20%	20%	20%	10%
Temperature (°C)	11°	11°	10°	10°	12°	13°	13°	11°	9°
Feels like temperature (°C)	9°	9°	8°	7°	9°	10°	10°	8°	7°
Wind direction and speed (mph)	NNE 9	NNE 10	NNE 11	NNE 11	NNE 14	NNE 15	N 15	NNE 12	NNE 9
Wind gust (mph)	19	19	21	27	29	28	26	17	14
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	87%	88%	87%	85%	70%	63%	60%	72%	81%
UV	-	-	-	1	2	4	2	1	-

Monday (22 September 2025)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	10%	<5%	<5%	<5%	<5%	<5%	<5%	10%
Temperature (°C)	9°	8°	7°	12°	13°	13°	11°	9°
Feels like temperature (°C)	7°	6°	5°	10°	11°	11°	9°	7°
Wind direction and speed (mph)	NNE 8	NNE 7	NE 7	NE 10	NE 12	NE 12	NE 9	NE 7
Wind gust (mph)	10	9	11	17	18	17	10	8
Visibility (description)	VG	VG	G	VG	VG	VG	VG	G
Humidity	82%	85%	86%	66%	59%	59%	75%	89%
UV	-	-	1	2	4	1	1	-

UK video forecast

Harlech weather map

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WARNING

Flood alerts in force for Wales

Natural Resources Wales

Wales weather forecast

Headline:

Remaining changeable with rain tonight.

This Evening and Tonight:

Cloudy this evening then turning increasingly wet and windy overnight with a band of heavy and persistent rain pushing eastwards. Rain most persistent over the mountains, with flooding possible. Mild overnight. Minimum temperature 11 °C.

Wednesday:

Heavy, persistent rain clearing eastwards through the morning, though remaining cloudy with outbreaks of patchy rain and drizzle throughout the day, turning heavy at times over the hills. Breezy. Maximum temperature 18 °C.

Outlook for Thursday to Saturday:

Remaining changeable with showers or longer spells of rain at times, though brighter interludes are possible. Often breezy. A little milder and more humid by the end of the week.

Updated: 17:00 (UTC+1) on Tue 16 Sep 2025

UK long range weather forecast

It is likely to be fairly unsettled at first, with areas of rain or showers, most widespread across central, southern and eastern areas, perhaps accompanied by some strong winds. Into next week, a northwest-southeast split is most likely, with some further rain or showers in southern and eastern areas, closest to an area of low pressure, whilst the best chance of longer, drier spells will be towards the north and northwest, where some patchy fog and rural frost are possible. It will also turn colder, as a northerly flow becomes established for a time. Later in the period, more widely drier and settled conditions could develop as high pressure becomes slightly more influential, although probably still with a few coastal showers. Temperatures should gradually return closer to average.

Updated: 15:00 (UTC+1) on Tue 16 Sep 2025

By the beginning of October, confidence is very low in the weather regimes most likely to affect the UK. On balance, slow-moving weather patterns are most likely, with high pressure probably close to the UK at times, at least initially. This should offer some occasional periods of dry weather, but there is always the chance in this type of setup that areas of low pressure nearby could impact parts of the UK, leading to some wetter conditions at times. Temperatures will likely fluctuate either side of, but often close to, average.

Updated: 16:00 (UTC+1) on Tue 16 Sep 2025

Harlech (Gwynedd) weather

Find a forecast

Forecast days

Today

Today

Wed 17 Sep

Wed 17 Sep

Thu 18 Sep

Thu 18 Sep

Fri 19 Sep

Fri 19 Sep

Sat 20 Sep

Sat 20 Sep

Sun 21 Sep

Sun 21 Sep

Mon 22 Sep

Mon 22 Sep

7 day forecast for Harlech

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UK video forecast

Wales weather forecast

Headline:

This Evening and Tonight:

Wednesday:

Outlook for Thursday to Saturday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

Causes of climate change

UK Snow 2010

Floods and flooding

Cloud names and classifications

When does autumn start?

5 tips for staying safe in heavy rain

Website feedback

Harlech (Gwynedd) weather

Find a forecast

Forecast days

Today

Today

Wed 17 Sep

Wed 17 Sep

Thu 18 Sep

Thu 18 Sep

Fri 19 Sep

Fri 19 Sep

Sat 20 Sep

Sat 20 Sep

Sun 21 Sep

Sun 21 Sep

Mon 22 Sep

Mon 22 Sep

7 day forecast for Harlech

UK video forecast

Wales weather forecast

Tuesday 16 Sep - Saturday 20 Sep

Headline:

This Evening and Tonight:

Wednesday:

Outlook for Thursday to Saturday:

UK long range weather forecast

Sunday 21 Sep - Tuesday 30 Sep

Wednesday 1 Oct - Wednesday 15 Oct

Nearest forecasts

More from the Met Office

Causes of climate change

UK Snow 2010

Floods and flooding

Cloud names and classifications

When does autumn start?

5 tips for staying safe in heavy rain

Website feedback