Portstewart (County Londonderry) weather

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Forecast days

Mon 11 May

Maximum daytime temperature: 11° Celsius; Minimum nighttime temperature: 7° Celsius;

Sunrise: 05:26

Sunset: 21:22
Sunny intervals changing to cloudy by early evening.

M UV

L Pollution

L Pollen
Next high tide: 16:34 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Mon 11 May

Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius;
Tue 12 May

Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 6° Celsius;

Sunrise: 05:24

Sunset: 21:23
Light showers changing to sunny intervals by lunchtime.

M UV

L Pollution

L Pollen
First high tide: 04:09 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Tue 12 May

Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius;
Wed 13 May

Maximum daytime temperature: 12° Celsius; Minimum nighttime temperature: 7° Celsius;

Sunrise: 05:22

Sunset: 21:25
Light showers.

H UV

L Pollution

L Pollen
First high tide: 04:47 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Wed 13 May

Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius;
Thu 14 May

Maximum daytime temperature: 12° Celsius; Minimum nighttime temperature: 7° Celsius;

Sunrise: 05:21

Sunset: 21:27
Light rain changing to sunny intervals in the afternoon.

M UV

L Pollution

L Pollen
First high tide: 05:24 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Thu 14 May

Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius;
Fri 15 May

Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 4° Celsius;

Sunrise: 05:19

Sunset: 21:29
Sunny intervals changing to partly cloudy by nighttime.

M UV

L Pollution

L Pollen
First high tide: 06:04 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Fri 15 May

Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius;
Sat 16 May

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 5° Celsius;

Sunrise: 05:17

Sunset: 21:31
Overcast changing to drizzle by late morning.

M UV

No pollution data.

No pollen data.
First high tide: 06:45 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Sat 16 May

Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius;
Sun 17 May

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 4° Celsius;

Sunrise: 05:15

Sunset: 21:32
Cloudy changing to light showers by late morning.

M UV

No pollution data.

No pollen data.
First high tide: 07:30 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Sun 17 May

Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius;

Sunny intervals changing to cloudy by early evening.

Sunrise: 05:26

Sunset: 21:22

M UV

L Pollution

L Pollen

Next high tide: 16:34 for

Portrush (Beach)

7 day forecast for Portstewart

Today (11 May 2026)

Time	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	10%	<5%	<5%	<5%	10%
Temperature (°C)	10°	10°	10°	9°	9°	9°	8°	9°
Feels like temperature (°C)	7°	7°	7°	7°	7°	6°	6°	6°
Wind direction and speed (mph)	NNW 11	NNW 11	NW 11	NW 10	NW 10	WNW 10	W 11	WSW 12
Wind gust (mph)	19	19	18	16	14	14	17	19
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	65%	65%	65%	65%	65%	65%	71%	75%
UV	3	2	1	1	1	1	-	-

Tuesday (12 May 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	20%	10%	<5%	20%	90%	≥95%	60%	70%	70%	80%	70%	60%	40%	20%	30%	50%	60%	60%	70%	80%	90%	90%	90%	90%
Temperature (°C)	9°	9°	9°	9°	9°	9°	9°	9°	9°	10°	10°	11°	11°	12°	12°	12°	11°	11°	11°	11°	10°	10°	9°	9°
Feels like temperature (°C)	5°	5°	5°	5°	5°	5°	5°	4°	5°	6°	7°	7°	7°	8°	8°	8°	8°	7°	7°	7°	6°	6°	5°	4°
Wind direction and speed (mph)	WSW 14	WSW 15	W 17	WSW 18	WSW 18	WSW 20	WNW 22	WNW 23	WNW 23	WNW 23	WNW 23	WNW 23	NW 22	NW 22	WNW 21	WNW 22	W 22	W 23	W 24	W 24	W 23	W 23	W 22	W 22
Wind gust (mph)	21	23	24	24	26	29	29	31	34	36	37	35	33	34	34	35	36	37	37	36	35	34	35	39
Visibility (description)	G	G	G	G	G	M	G	G	VG	G	G	G	G	VG	VG	G	G	G	G	G	G	G	G	G
Humidity	79%	84%	77%	79%	82%	89%	76%	74%	69%	67%	69%	70%	68%	66%	66%	66%	65%	67%	68%	70%	74%	75%	75%	75%
UV	-	-	-	-	-	1	1	1	1	2	3	4	5	4	4	4	3	2	1	1	1	1	-	-

Wednesday (13 May 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	≥95%	≥95%	≥95%	≥95%	≥95%	90%	≥95%	90%	90%	80%	80%	80%	70%	70%	80%	80%	80%	80%	70%	70%	60%	50%	60%	60%
Temperature (°C)	8°	8°	7°	7°	7°	7°	8°	8°	8°	9°	9°	10°	10°	10°	11°	11°	11°	10°	10°	10°	10°	10°	9°	9°
Feels like temperature (°C)	4°	3°	2°	2°	2°	2°	2°	3°	3°	4°	5°	6°	6°	6°	7°	7°	6°	6°	6°	6°	6°	5°	5°	5°
Wind direction and speed (mph)	W 24	WNW 24	W 24	WNW 25	WNW 26	WNW 27	NW 28	NW 27	NW 27	NW 27	NNW 27	NW 27	NW 27	NW 26	NW 25	NW 26	NW 26	NW 26	NW 26	NW 26	NW 25	NNW 25	NNW 25	NNW 25
Wind gust (mph)	40	39	38	38	38	39	38	39	40	41	39	40	40	39	39	39	39	38	37	37	35	34	33	32
Visibility (description)	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G
Humidity	75%	75%	77%	76%	76%	75%	75%	74%	75%	75%	75%	73%	74%	74%	75%	75%	76%	76%	76%	77%	76%	76%	75%	75%
UV	-	-	-	-	-	1	1	1	1	2	2	4	5	5	5	4	2	2	1	1	1	1	-	-

Thursday (14 May 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	60%	70%	70%	80%	80%	80%	80%	80%	80%	80%	80%	70%	60%	50%	50%	40%	30%	20%	20%	30%	30%	30%	30%	30%
Temperature (°C)	9°	9°	9°	8°	8°	8°	8°	8°	8°	9°	9°	10°	10°	10°	11°	11°	10°	10°	10°	10°	10°	10°	9°	9°
Feels like temperature (°C)	5°	4°	4°	4°	4°	4°	4°	4°	4°	5°	5°	6°	6°	7°	7°	7°	7°	7°	7°	6°	6°	6°	5°	5°
Wind direction and speed (mph)	NNW 24	NNW 23	NNW 23	NNW 22	NNW 22	NNW 22	NNW 21	NNW 21	NNW 20	NNW 20	NNW 20	NNW 20	NNW 21	NNW 21	NNW 21	NNW 22	NNW 22	NNW 22	NNW 22	NNW 22	NNW 22	NNW 22	NNW 22	NNW 22
Wind gust (mph)	31	31	30	30	30	29	29	29	29	30	31	32	34	33	33	33	32	33	32	31	30	30	28	28
Visibility (description)	G	G	VG	G	G	G	VG	VG	G	G	G	VG	VG	VG	G	G	G	G	G	G	VG	VG	VG	VG
Humidity	75%	76%	76%	76%	75%	75%	75%	76%	75%	75%	75%	74%	74%	74%	74%	75%	75%	75%	73%	73%	73%	73%	74%	74%
UV	-	-	-	-	-	1	1	1	1	1	2	3	4	4	4	3	3	2	1	1	1	1	-	-

Friday (15 May 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	40%	30%	40%	30%	30%	30%	30%	30%	30%	30%	30%	30%	20%	20%	20%	20%	10%	10%	20%	20%	20%	20%	30%	30%
Temperature (°C)	9°	9°	9°	8°	8°	8°	8°	8°	9°	10°	10°	10°	11°	11°	11°	12°	11°	11°	11°	10°	10°	9°	8°	8°
Feels like temperature (°C)	5°	5°	4°	4°	4°	4°	4°	4°	5°	6°	7°	7°	8°	8°	8°	9°	9°	8°	8°	8°	7°	6°	5°	5°
Wind direction and speed (mph)	NNW 21	N 21	N 21	N 20	N 20	N 20	N 19	N 19	N 18	N 18	N 17	NNW 16	NNW 16	NNW 16	NNW 15	NNW 15	NNW 14	NNW 14	NNW 14	NNW 14	NNW 13	NNW 12	NW 11	WNW 10
Wind gust (mph)	27	28	27	27	25	25	25	26	26	26	27	26	26	25	25	25	23	23	22	21	18	16	14	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	G
Humidity	73%	74%	73%	73%	72%	72%	69%	68%	70%	69%	68%	69%	68%	68%	69%	67%	68%	67%	67%	66%	66%	67%	69%	69%
UV	-	-	-	-	-	1	1	1	1	2	3	4	5	5	5	4	3	2	1	1	1	1	-	-

Saturday (16 May 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%	40%	40%	40%	40%	50%	40%	30%
Temperature (°C)	7°	7°	6°	7°	11°	12°	13°	12°	9°
Feels like temperature (°C)	4°	4°	3°	5°	8°	10°	11°	10°	6°
Wind direction and speed (mph)	W 9	WSW 9	SSW 9	SSW 9	SW 10	SW 11	NW 10	NW 8	W 9
Wind gust (mph)	13	15	16	17	18	19	16	16	15
Visibility (description)	VG	G	G	G	G	G	VG	VG	G
Humidity	71%	72%	76%	81%	75%	74%	76%	78%	83%
UV	-	-	-	1	2	4	2	1	-

Sunday (17 May 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%	30%	60%	70%	80%	60%	40%
Temperature (°C)	7°	7°	8°	11°	13°	12°	12°	8°
Feels like temperature (°C)	4°	4°	5°	9°	11°	10°	10°	6°
Wind direction and speed (mph)	WSW 9	WSW 10	SW 11	SW 11	WSW 11	WSW 11	SSW 10	SSW 10
Wind gust (mph)	15	18	19	19	20	20	17	18
Visibility (description)	G	G	G	G	VG	G	VG	G
Humidity	86%	87%	87%	79%	76%	76%	78%	81%
UV	-	-	1	3	4	2	1	-

UK video forecast

Portstewart weather map

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Northern Ireland weather forecast

Headline:

Overnight rain clearing then sunny spells and showers Tuesday.

This Evening and Tonight:

Dry at first with some sunny spells but cloud increasing towards midnight with outbreaks of rain spreading southeast through the early hours. Becoming drier with clear spells developing towards dawn in the west. Minimum temperature 5 °C.

Tuesday:

Cloud and rain in east soon clearing, with sunny spells in the west developing more widely. A few showers are likely, these becoming more frequent, heavier and blustery from mid-afternoon. Maximum temperature 13 °C.

Outlook for Wednesday to Friday:

Rather cold Wednesday with heavy showers and occasionally strong northwesterly winds, the showers and winds easing on Thursday. Rather cloudy Friday, perhaps a little rain in the west.

Updated: 16:00 (UTC+1) on Mon 11 May 2026

UK long range weather forecast

Changeable and at times rather unsettled conditions look to dominate through the middle part of May, with low pressure often close by. This means periods of rain or showers, some of which could be heavy, for many places, though some drier interludes are also expected. Initially temperatures likely cooler than average, but tending to recover, perhaps becoming rather warm by the end of the period as it tends to become more settled, especially in the south.

Updated: 13:00 (UTC+1) on Mon 11 May 2026

Patterns which bring more settled weather are more likely to dominate towards the end of May. Whilst further rain and showers are possible at times, there is likely to be longer spells of fine and dry weather. Temperatures are most likely to recover close to average, perhaps becoming warm at times. Into June, more mixed conditions are likely with spells of rain and showers, but also some drier weather at times.

Updated: 14:00 (UTC+1) on Mon 11 May 2026

Portstewart (County Londonderry) weather

Find a forecast

Forecast days

Mon 11 May

Mon 11 May

Tue 12 May

Tue 12 May

Wed 13 May

Wed 13 May

Thu 14 May

Thu 14 May

Fri 15 May

Fri 15 May

Sat 16 May

Sat 16 May

Sun 17 May

Sun 17 May

7 day forecast for Portstewart

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UK video forecast

Northern Ireland weather forecast

Headline:

This Evening and Tonight:

Tuesday:

Outlook for Wednesday to Friday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

Causes of climate change

Earth spiral mobile DIY activity

Satellite image of the month - 2021

Windy days DIY activity

How accurate are our public forecasts?

Satellite image of the month - 2020

Portstewart (County Londonderry) weather

Find a forecast

Forecast days

Mon 11 May

Mon 11 May

Tue 12 May

Tue 12 May

Wed 13 May

Wed 13 May

Thu 14 May

Thu 14 May

Fri 15 May

Fri 15 May

Sat 16 May

Sat 16 May

Sun 17 May

Sun 17 May

7 day forecast for Portstewart

UK video forecast

Northern Ireland weather forecast

Monday 11 May - Friday 15 May

Headline:

This Evening and Tonight:

Tuesday:

Outlook for Wednesday to Friday:

UK long range weather forecast

Saturday 16 May - Monday 25 May

Tuesday 26 May - Tuesday 9 Jun

Nearest forecasts

More from the Met Office

Causes of climate change

Earth spiral mobile DIY activity

Satellite image of the month - 2021

Windy days DIY activity

How accurate are our public forecasts?

Satellite image of the month - 2020