Portstewart (County Londonderry) weather

Find a forecast

Forecast days

Today

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 4° Celsius;

Sunrise: 05:17

Sunset: 21:31
Sunny.

H UV

L Pollution

L Pollen
Next high tide: 09:24 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Today

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 4° Celsius;
Sat 17 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 5° Celsius;

Sunrise: 05:15

Sunset: 21:33
Sunny.

H UV

L Pollution

L Pollen
First high tide: 10:11 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Sat 17 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 5° Celsius;
Sun 18 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 5° Celsius;

Sunrise: 05:13

Sunset: 21:35
Sunny.

H UV

L Pollution

L Pollen
First high tide: 11:12 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Sun 18 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 5° Celsius;
Mon 19 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 5° Celsius;

Sunrise: 05:12

Sunset: 21:36
Sunny.

H UV

L Pollution

L Pollen
First high tide: 00:26 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Mon 19 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 5° Celsius;
Tue 20 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 4° Celsius;

Sunrise: 05:10

Sunset: 21:38
Sunny.

H UV

L Pollution

No pollen data.
First high tide: 01:40 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Tue 20 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 4° Celsius;
Wed 21 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 6° Celsius;

Sunrise: 05:08

Sunset: 21:40
Sunny changing to partly cloudy by nighttime.

H UV

No pollution data.

No pollen data.
First high tide: 02:36 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Wed 21 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 6° Celsius;
Thu 22 May

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 8° Celsius;

Sunrise: 05:07

Sunset: 21:41
Sunny intervals changing to cloudy by late morning.

M UV

No pollution data.

No pollen data.
First high tide: 03:27 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Thu 22 May

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 8° Celsius;
Fri 23 May

Maximum daytime temperature: 18° Celsius;

Sunrise: 05:06

Sunset: 21:43
Cloudy changing to sunny intervals by lunchtime.

L UV

No pollution data.

No pollen data.
First high tide: 04:14 for
Portrush (Beach)
Portrush - Mill (West) Strand (Beach)

2.8 miles
Fri 23 May

Maximum daytime temperature: 18° Celsius;

Sunny.

Sunrise: 05:17

Sunset: 21:31

H UV

L Pollution

L Pollen

Next high tide: 09:24 for

Portrush (Beach)

8 day forecast for Portstewart

Today (16 May 2025)

Time	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%
Temperature (°C)	6°	9°	11°	13°	15°	16°	17°	18°	18°	19°	18°	17°	16°	15°	14°	12°	10°	9°
Feels like temperature (°C)	5°	7°	10°	12°	14°	15°	15°	16°	17°	17°	17°	16°	15°	15°	14°	12°	10°	9°
Wind direction and speed (mph)	SE 6	SE 5	SSE 5	SE 5	ENE 6	NNE 9	NE 10	NE 11	NNE 11	NNE 10	NNE 9	N 7	N 6	N 5	NNW 4	NW 3	NW 3	WNW 3
Wind gust (mph)	11	11	11	11	12	13	14	14	14	14	14	14	14	10	8	6	6	8
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	75%	75%	74%	73%	75%	77%	75%	74%	73%	73%	75%	74%	74%	74%	75%	76%	77%	78%
UV	1	1	1	2	4	5	5	6	5	4	3	2	1	1	1	1	-	-

Saturday (17 May 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)	9°	9°	8°	7°	6°	6°	6°	9°	12°	14°	16°	17°	18°	18°	18°	19°	18°	18°	17°	16°	14°	13°	10°	10°
Feels like temperature (°C)	8°	8°	7°	6°	5°	5°	6°	9°	11°	14°	15°	16°	16°	16°	16°	17°	17°	16°	16°	15°	14°	12°	10°	9°
Wind direction and speed (mph)	WNW 4	WNW 4	WNW 4	WNW 3	N 3	ENE 3	ESE 3	SE 3	SE 4	ESE 5	NE 7	NE 9	NE 12	NE 13	NE 13	NE 12	NNE 11	NNE 10	NNE 9	N 7	NNW 5	NW 3	WNW 3	WNW 3
Wind gust (mph)	8	8	7	6	5	6	6	7	9	12	14	15	16	17	18	18	16	16	16	14	10	7	5	5
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	81%	83%	83%	84%	86%	86%	86%	86%	84%	83%	84%	82%	76%	75%	75%	76%	76%	76%	76%	77%	78%	83%	84%	84%
UV	-	-	-	-	-	1	1	1	1	2	4	5	6	6	5	5	3	2	1	1	1	1	-	-

Sunday (18 May 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	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	9°	8°	8°	11°	16°	17°	17°	16°	11°
Feels like temperature (°C)	9°	8°	7°	11°	16°	17°	16°	14°	10°
Wind direction and speed (mph)	WNW 3	WSW 3	SE 2	ESE 3	NNE 6	N 7	NNW 10	N 10	NW 7
Wind gust (mph)	5	5	5	9	15	18	18	14	14
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	84%	84%	79%	76%	78%	77%	75%	77%	82%
UV	-	-	-	1	4	6	3	1	-

Monday (19 May 2025)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	10%	<5%	<5%	<5%
Temperature (°C)	9°	8°	9°	15°	17°	19°	18°	11°
Feels like temperature (°C)	7°	5°	8°	13°	15°	16°	16°	10°
Wind direction and speed (mph)	N 6	E 8	ESE 7	SE 9	E 14	E 14	ENE 11	ENE 6
Wind gust (mph)	15	17	19	20	20	19	14	10
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	82%	79%	78%	75%	75%	69%	71%	76%
UV	-	-	1	4	6	3	1	-

Tuesday (20 May 2025)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	8°	7°	10°	16°	18°	18°	17°	9°
Feels like temperature (°C)	7°	6°	10°	16°	17°	17°	16°	8°
Wind direction and speed (mph)	ESE 4	SE 4	SE 4	NNE 6	NNE 8	N 9	NNW 8	NW 7
Wind gust (mph)	7	7	7	13	15	14	10	4
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	79%	77%	77%	80%	81%	77%	80%	88%
UV	-	-	1	4	6	3	1	-

Wednesday (21 May 2025)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	10%	10%	10%	10%
Temperature (°C)	7°	5°	10°	16°	19°	19°	17°	11°
Feels like temperature (°C)	5°	3°	10°	16°	18°	18°	16°	9°
Wind direction and speed (mph)	W 5	W 5	SE 5	W 8	NNW 10	N 10	N 10	N 8
Wind gust (mph)	4	5	7	13	14	13	9	5
Visibility (description)	VG	G	G	VG	VG	VG	VG	G
Humidity	88%	90%	90%	88%	84%	81%	84%	90%
UV	-	-	1	4	6	3	1	-

Thursday (22 May 2025)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	10%	10%	20%	30%	40%	40%	30%	30%
Temperature (°C)	8°	8°	10°	15°	17°	17°	16°	12°
Feels like temperature (°C)	6°	6°	8°	13°	15°	15°	14°	10°
Wind direction and speed (mph)	S 7	S 7	S 8	S 11	S 12	SW 12	SW 11	WSW 8
Wind gust (mph)	5	6	13	17	18	17	13	9
Visibility (description)	G	VG	VG	VG	VG	VG	G	G
Humidity	90%	88%	86%	82%	80%	82%	88%	90%
UV	-	-	1	3	5	3	1	-

Friday (23 May 2025)

Time	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%	40%	30%	30%	20%
Temperature (°C)	10°	9°	11°	14°	16°	16°	15°	13°
Feels like temperature (°C)	9°	7°	9°	12°	15°	15°	14°	11°
Wind direction and speed (mph)	SW 8	SW 10	SW 10	WSW 11	W 11	WNW 11	W 10	WSW 8
Wind gust (mph)	9	10	16	17	17	17	16	11
Visibility (description)	G	G	G	G	G	G	G	G
Humidity	92%	91%	90%	86%	83%	82%	85%	90%
UV	-	-	1	3	5	3	1	-

UK video forecast

Portstewart weather map

View the weather with our interactive map

Loading map...

Northern Ireland weather forecast

Headline:

Dry, sunny and warm on Friday.

Today:

Patchy cloud possible to start in the southeast but this quickly clearing to leave a dry day with prolonged sunshine and mostly very warm afternoon temperatures, a touch cooler near eastern coasts however. Light easterly winds. Maximum temperature 21 °C.

Tonight:

A dry evening with late sunshine. Remaining dry overnight with largely clear skies but some patchy cloud may feed into northern and eastern coasts. Minimum temperature 2 °C.

Saturday:

A dry day with prolonged sunshine for most, however cloud may linger near southeastern coasts through the morning. Very warm afternoon temperatures, a touch cooler near coasts. Light easterly winds. Maximum temperature 22 °C.

Outlook for Sunday to Tuesday:

It will remain dry throughout with patchy cloud at times but still plenty of sunshine on offer. Generally light winds. Afternoon temperatures seasonally very warm.

Updated: 05:00 (UTC+1) on Fri 16 May 2025

UK long range weather forecast

Most of the UK will be fine with sunny spells during the first part of this period. A few showers are possible in the south at first but otherwise the majority of places will be dry. Temperatures are likely to be above normal for the time of year. Into the bank holiday weekend and following week, a change in weather type is expected. More unsettled conditions are likely to develop, with weather systems moving in from the Atlantic. This will bring spells of rain to many areas, perhaps heavy at times, with a risk of strong winds in places. Some drier and brighter intervals are likely between systems. Temperatures will probably be near normal or slightly above.

Updated: 15:00 (UTC+1) on Thu 15 May 2025

Changeable weather conditions are expected during the end of May and into the first half of June. Spells of wet weather with showers or longer spells of rain are likely to be interspersed with drier, sunnier periods. Overall, it will likely be wettest in the west and driest in the east. Temperatures will probably average out around normal, although some very warm or hot spells are possible.

Updated: 16:00 (UTC+1) on Thu 15 May 2025

Portstewart (County Londonderry) weather

Find a forecast

Forecast days

Today

Today

Sat 17 May

Sat 17 May

Sun 18 May

Sun 18 May

Mon 19 May

Mon 19 May

Tue 20 May

Tue 20 May

Wed 21 May

Wed 21 May

Thu 22 May

Thu 22 May

Fri 23 May

Fri 23 May

8 day forecast for Portstewart

Tooltip header

UK video forecast

Northern Ireland weather forecast

Headline:

Today:

Tonight:

Saturday:

Outlook for Sunday to Tuesday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

Causes of climate change

2012 - a wet year

What is the Atlantic Meridional Overturning Circulation?

8 interesting facts about autumn

6 facts about the winter solstice

4 tips for staying safe in extreme heat

Website feedback

Portstewart (County Londonderry) weather

Find a forecast

Forecast days

Today

Today

Sat 17 May

Sat 17 May

Sun 18 May

Sun 18 May

Mon 19 May

Mon 19 May

Tue 20 May

Tue 20 May

Wed 21 May

Wed 21 May

Thu 22 May

Thu 22 May

Fri 23 May

Fri 23 May

8 day forecast for Portstewart

UK video forecast

Northern Ireland weather forecast

Friday 16 May - Tuesday 20 May

Headline:

Today:

Tonight:

Saturday:

Outlook for Sunday to Tuesday:

UK long range weather forecast

Tuesday 20 May - Thursday 29 May

Friday 30 May - Friday 13 Jun

Nearest forecasts

More from the Met Office

Causes of climate change

2012 - a wet year

What is the Atlantic Meridional Overturning Circulation?

8 interesting facts about autumn

6 facts about the winter solstice

4 tips for staying safe in extreme heat

Website feedback