Holyhead Bay (Isle of Anglesey) weather

Find a forecast

Forecast days

Sun 30 Aug

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 06:25

Sunset: 20:13
Yellow weather warning.

M UV

L Pollution

L Pollen
Next high tide: 12:30 for
Porth Trwyn (Beach)
Porth Tywyn Mawr (Sandy Beach)

3.0 miles
Sun 30 Aug

Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
Mon 31 Aug

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

Sunrise: 06:26

Sunset: 20:10
Cloudy changing to sunny intervals by late morning.

M UV

L Pollution

L Pollen
First high tide: 00:42 for
Porth Trwyn (Beach)
Porth Tywyn Mawr (Sandy Beach)

3.0 miles
Mon 31 Aug

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
Tue 1 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 16° Celsius;

Sunrise: 06:28

Sunset: 20:08
Sunny intervals changing to cloudy in the afternoon.

M UV

L Pollution

L Pollen
First high tide: 01:17 for
Porth Trwyn (Beach)
Porth Tywyn Mawr (Sandy Beach)

3.0 miles
Tue 1 Sep

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
Wed 2 Sep

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 16° Celsius;

Sunrise: 06:30

Sunset: 20:05
Overcast changing to sunny intervals by late morning.

M UV

L Pollution

L Pollen
First high tide: 01:55 for
Porth Trwyn (Beach)
Porth Tywyn Mawr (Sandy Beach)

3.0 miles
Wed 2 Sep

Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
Thu 3 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 16° Celsius;

Sunrise: 06:32

Sunset: 20:03
Sunny intervals changing to cloudy in the afternoon.

M UV

No pollution data.

L Pollen
First high tide: 02:37 for
Porth Trwyn (Beach)
Porth Tywyn Mawr (Sandy Beach)

3.0 miles
Thu 3 Sep

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
Fri 4 Sep

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

Sunrise: 06:33

Sunset: 20:01
Cloudy.

M UV

No pollution data.

No pollen data.
First high tide: 03:29 for
Porth Trwyn (Beach)
Porth Tywyn Mawr (Sandy Beach)

3.0 miles
Fri 4 Sep

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
Sat 5 Sep

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

Sunrise: 06:35

Sunset: 19:58
Cloudy.

M UV

No pollution data.

No pollen data.
First high tide: 04:39 for
Porth Trwyn (Beach)
Porth Tywyn Mawr (Sandy Beach)

3.0 miles
Sat 5 Sep

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

Yellow weather warning.

Sunrise: 06:25

Sunset: 20:13

M UV

L Pollution

L Pollen

Next high tide: 12:30 for

Porth Trwyn (Beach)

Yellow warning: Thunderstorm

7 day forecast for Holyhead Bay

Today (30 August 2026)

Time	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	40%	50%	60%	70%	≥95%	80%	60%	40%	20%	10%	10%	10%	10%
Temperature (°C)	17°	17°	17°	18°	17°	17°	17°	17°	17°	17°	16°	16°	16°
Feels like temperature (°C)	15°	15°	15°	15°	15°	15°	15°	15°	15°	15°	14°	15°	15°
Wind direction and speed (mph)	S 13	S 15	S 14	S 14	S 16	SSW 16	S 16	SSW 14	S 13	SSW 13	SSW 13	SW 11	WSW 11
Wind gust (mph)	23	22	23	23	27	26	24	22	21	20	19	18	18
Visibility (description)	M	M	M	M	G	G	G	G	G	G	G	G	VG
Humidity	92%	89%	86%	86%	86%	85%	85%	85%	85%	85%	85%	85%	85%
UV	4	2	4	1	3	3	2	1	1	1	-	-	-

Monday (31 August 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	10%	20%	30%	30%	20%	10%	20%	30%	40%	30%	10%	<5%	<5%	<5%	<5%	<5%	10%	<5%	<5%	10%	10%	10%	<5%	<5%
Temperature (°C)	16°	16°	16°	16°	16°	15°	15°	15°	15°	15°	16°	16°	16°	16°	16°	17°	17°	17°	17°	17°	16°	16°	16°	16°
Feels like temperature (°C)	14°	14°	13°	13°	13°	12°	12°	12°	12°	12°	12°	13°	13°	13°	13°	14°	14°	14°	15°	15°	15°	14°	14°	14°
Wind direction and speed (mph)	W 11	W 13	W 14	WNW 16	WNW 18	WNW 18	WNW 18	WNW 18	WNW 18	WNW 19	WNW 20	WNW 18	WNW 18	WNW 18	WNW 16	WNW 16	W 14	W 13	W 11	W 11	WSW 10	WSW 11	WSW 11	WSW 11
Wind gust (mph)	19	22	24	26	27	27	28	27	29	31	31	30	28	26	25	24	22	20	18	17	17	17	17	18
Visibility (description)	G	G	G	G	G	G	G	G	G	G	G	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	85%	86%	86%	88%	89%	90%	88%	88%	87%	85%	84%	81%	78%	75%	70%	70%	69%	69%	67%	68%	68%	69%	72%	73%
UV	-	-	-	-	-	-	1	1	1	2	3	4	5	5	5	4	2	1	1	1	1	-	-	-

Tuesday (1 September 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	10%	<5%	<5%	10%	10%	10%	10%	10%	10%	<5%	<5%	10%	10%	<5%	<5%	10%	10%	30%	30%	40%	60%	70%	70%	80%
Temperature (°C)	16°	16°	16°	16°	16°	16°	16°	16°	16°	16°	16°	17°	17°	17°	17°	17°	18°	17°	17°	17°	17°	17°	17°	16°
Feels like temperature (°C)	14°	14°	14°	13°	13°	13°	13°	13°	13°	13°	13°	14°	14°	14°	14°	14°	14°	14°	14°	14°	14°	13°	13°	13°
Wind direction and speed (mph)	WSW 13	WSW 13	WSW 13	WSW 15	WSW 16	WSW 16	SW 16	SW 16	SW 16	SW 16	SW 17	SW 17	SW 18	SW 17	SW 18	SW 18	SW 18	SW 18	SSW 19	SSW 19	SSW 19	SSW 20	SSW 20	SSW 22
Wind gust (mph)	20	20	22	23	24	23	24	25	25	26	26	26	26	27	27	28	29	29	30	30	30	31	31	31
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	G	G	G	G	G	G	G	G	G	G	G	G	M	M	M	M
Humidity	74%	75%	75%	76%	76%	77%	77%	81%	83%	83%	84%	84%	85%	85%	85%	85%	85%	86%	86%	86%	86%	88%	88%	91%
UV	-	-	-	-	-	-	1	1	1	2	3	4	5	4	4	3	2	1	1	1	1	-	-	-

Wednesday (2 September 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	80%	80%	80%	80%	70%	50%	50%	40%	30%	30%	20%	20%	10%	10%	10%	10%	10%	20%	40%	40%	30%	20%	20%	10%
Temperature (°C)	16°	16°	16°	16°	17°	17°	17°	17°	17°	17°	18°	18°	18°	18°	18°	18°	18°	18°	18°	18°	17°	17°	17°	17°
Feels like temperature (°C)	12°	12°	12°	12°	12°	13°	12°	12°	13°	13°	14°	15°	15°	16°	15°	15°	16°	15°	15°	15°	15°	15°	14°	14°
Wind direction and speed (mph)	SSW 22	SSW 22	SSW 24	SSW 25	SSW 25	SSW 25	SW 25	SW 25	SW 23	SW 22	SW 22	SW 18	SW 18	SW 18	SW 18	SW 18	SW 18	SW 18	SW 18	SW 18	SW 17	SW 17	WSW 18	WSW 18
Wind gust (mph)	35	38	39	40	40	40	39	37	36	34	34	31	31	31	31	31	31	31	29	28	27	26	26	26
Visibility (description)	M	M	M	M	M	M	M	M	M	M	M	M	G	M	M	M	M	M	M	M	G	G	G	M
Humidity	90%	91%	92%	92%	92%	92%	92%	92%	92%	92%	92%	91%	91%	91%	91%	91%	92%	92%	91%	92%	92%	91%	90%	87%
UV	-	-	-	-	-	-	1	1	1	2	3	3	4	5	4	4	3	1	1	1	1	-	-	-

Thursday (3 September 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	10%	10%	<5%	10%	10%	10%	10%	10%	10%	10%	10%	10%	10%	10%	20%	20%	20%	30%	30%	30%	30%	20%	30%	30%
Temperature (°C)	17°	17°	17°	17°	16°	16°	16°	16°	16°	16°	16°	17°	17°	18°	18°	18°	18°	18°	18°	17°	17°	17°	17°	17°
Feels like temperature (°C)	14°	14°	14°	14°	14°	13°	13°	13°	13°	13°	13°	14°	14°	15°	15°	15°	15°	14°	15°	15°	15°	14°	14°	14°
Wind direction and speed (mph)	WSW 18	WSW 18	WSW 17	WSW 17	WSW 16	WSW 17	WSW 17	WSW 18	WSW 18	WSW 18	WSW 18	SW 18	SW 18	SW 17	SW 18	SW 17	SW 18	SW 18	SW 18	SW 16	SW 16	SW 16	SW 16	SW 16
Wind gust (mph)	26	27	27	27	26	27	27	28	28	28	27	26	26	26	27	27	26	25	25	24	25	25	25	25
Visibility (description)	M	G	G	G	G	G	G	G	G	M	M	G	G	G	G	G	G	G	G	G	G	G	M	M
Humidity	85%	85%	85%	85%	85%	84%	85%	84%	84%	83%	82%	84%	84%	83%	84%	84%	85%	84%	85%	86%	86%	88%	87%	87%
UV	-	-	-	-	-	-	1	1	1	2	3	4	5	4	4	3	2	1	1	1	1	-	-	-

Friday (4 September 2026)

Time	00:00	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	30%	30%	30%	30%	20%	30%	30%	30%	40%
Temperature (°C)	17°	17°	16°	16°	17°	18°	18°	17°	16°
Feels like temperature (°C)	14°	14°	14°	13°	14°	16°	16°	15°	14°
Wind direction and speed (mph)	SW 16	WSW 16	WSW 13	WSW 15	WSW 15	WSW 13	SW 13	SW 11	SW 14
Wind gust (mph)	25	26	25	25	26	24	22	21	21
Visibility (description)	M	M	M	M	G	M	M	M	M
Humidity	86%	86%	87%	86%	86%	83%	79%	80%	84%
UV	-	-	-	1	2	5	2	1	-

Saturday (5 September 2026)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	40%	40%	40%	30%	30%	30%	30%	30%
Temperature (°C)	16°	16°	16°	16°	17°	18°	17°	17°
Feels like temperature (°C)	13°	13°	14°	14°	16°	15°	15°	15°
Wind direction and speed (mph)	WSW 17	WSW 16	W 13	W 13	W 11	WSW 13	SW 11	WSW 11
Wind gust (mph)	22	23	23	22	22	21	21	21
Visibility (description)	M	M	M	M	G	G	G	M
Humidity	84%	85%	85%	80%	79%	76%	77%	79%
UV	-	-	1	2	5	2	1	-

UK video forecast

Holyhead Bay weather map

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Wales weather forecast

Headline:

Low pressure brings further heavy showers.

Today:

A day of sunny spells and showers. Showers frequent by the afternoon, some heavy with hail and thunder, which may lead to some localised flooding in places. Gusty winds with some of the showers. Feeling rather muggy. Maximum temperature 21 °C.

Tonight:

Further heavy and thundery showers are expected through the evening, though slowly easing overnight with clear spells developing. Staying mild, with a few mist patches forming by dawn. Minimum temperature 12 °C.

Monday:

Showers return for the morning, but these should generally clear for most during the afternoon, as a ridge of high pressure moves in. Feeling fresher, with a northwesterly breeze. Maximum temperature 20 °C.

Outlook for Tuesday to Thursday:

Staying on the mixed side, with further showers and longer spells of rain through this period. Some sunnier moments in between. Temperatures around average for early meteorological Autumn.

Updated: 04:00 (UTC+1) on Sun 30 Aug 2026

UK long range weather forecast

Likely remaining unsettled with most areas seeing some showers or longer spells of rain at times, with the main focus for these across northern and western areas. Potential for some strong and gusty winds at times. Some drier and more settled interludes could develop, perhaps becoming longer in duration across southern areas later in this period. Temperatures are likely to be near average, although some short-lived warm or very warm spells are possible, especially in the south.

Updated: 13:00 (UTC+1) on Sat 29 Aug 2026

Signals are fairly limited from mid-September onward. At first, probably a continuation of a changeable regime with the wettest conditions in the northwest and longer drier interludes in the southeast. However, the distribution of rainfall soon becomes very unclear, although compared to earlier in the month there is a greater chance of more prolonged settled/dry spells. Temperatures likely varying around average with some warm spells likely, especially in the south.

Updated: 14:00 (UTC+1) on Sat 29 Aug 2026

Holyhead Bay (Isle of Anglesey) weather

Find a forecast

Forecast days

Sun 30 Aug

Sun 30 Aug

Mon 31 Aug

Mon 31 Aug

Tue 1 Sep

Tue 1 Sep

Wed 2 Sep

Wed 2 Sep

Thu 3 Sep

Thu 3 Sep

Fri 4 Sep

Fri 4 Sep

Sat 5 Sep

Sat 5 Sep

7 day forecast for Holyhead Bay

Tooltip header

UK video forecast

Wales weather forecast

Headline:

Today:

Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

Nearest forecasts

Holyhead Bay (Isle of Anglesey) weather

Find a forecast

Forecast days

Sun 30 Aug

Sun 30 Aug

Mon 31 Aug

Mon 31 Aug

Tue 1 Sep

Tue 1 Sep

Wed 2 Sep

Wed 2 Sep

Thu 3 Sep

Thu 3 Sep

Fri 4 Sep

Fri 4 Sep

Sat 5 Sep

Sat 5 Sep

7 day forecast for Holyhead Bay

UK video forecast

Wales weather forecast

Sunday 30 Aug - Thursday 3 Sep

Headline:

Today:

Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

Thursday 3 Sep - Saturday 12 Sep

Sunday 13 Sep - Sunday 27 Sep

Nearest forecasts