Slieveavaddy (County Londonderry) weather

Find a forecast

Forecast days

Today

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

Sunrise: 07:48

Sunset: 17:37

Yellow weather warning.

L UV

L Pollution

No pollen data.

Today

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: -3° Celsius;
Tue 17 Feb

Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -2° Celsius;

Sunrise: 07:46

Sunset: 17:39

Yellow weather warning.

L UV

L Pollution

No pollen data.

Tue 17 Feb

Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -2° Celsius;
Wed 18 Feb

Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -2° Celsius;

Sunrise: 07:43

Sunset: 17:41

Cloudy.

L UV

L Pollution

No pollen data.

Wed 18 Feb

Maximum daytime temperature: 1° Celsius; Minimum nighttime temperature: -2° Celsius;
Thu 19 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: 1° Celsius;

Sunrise: 07:41

Sunset: 17:43

Partly cloudy changing to fog by nighttime.

L UV

L Pollution

No pollen data.

Thu 19 Feb

Maximum daytime temperature: 3° Celsius; Minimum nighttime temperature: 1° Celsius;
Fri 20 Feb

Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 5° Celsius;

Sunrise: 07:39

Sunset: 17:45

Light rain.

L UV

L Pollution

No pollen data.

Fri 20 Feb

Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 5° Celsius;
Sat 21 Feb

Maximum daytime temperature: 9° Celsius; Minimum nighttime temperature: 5° Celsius;

Sunrise: 07:37

Sunset: 17:47

Fog changing to overcast by late morning.

L UV

No pollution data.

No pollen data.

Sat 21 Feb

Maximum daytime temperature: 9° Celsius; Minimum nighttime temperature: 5° Celsius;
Sun 22 Feb

Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 3° Celsius;

Sunrise: 07:34

Sunset: 17:49

Overcast.

L UV

No pollution data.

No pollen data.

Sun 22 Feb

Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 3° Celsius;

Yellow weather warning.

Sunrise: 07:48

Sunset: 17:37

L UV

L Pollution

No pollen data.

Yellow warning: Ice

7 day forecast for Slieveavaddy

Today (16 February 2026)

Time	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	30%	50%	50%	40%	20%
Temperature (°C)	0°	0°	0°	0°	-1°
Feels like temperature (°C)	-7°	-7°	-7°	-6°	-6°
Wind direction and speed (mph)	NW 17	NW 16	NW 16	NW 16	NW 14
Wind gust (mph)	21	21	21	19	16
Visibility (description)	VG	VG	VG	VG	VG
Humidity	84%	84%	83%	85%	83%
UV	-	-	-	-	-

Tuesday (17 February 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%	40%	40%	40%	20%	10%	10%	20%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	-1°	-1°	-1°	-1°	-1°	-2°	-2°	-2°	-2°	-1°	0°	0°	1°	1°	1°	0°	0°	-1°	-2°	-2°	-2°	-2°	-2°	-1°
Feels like temperature (°C)	-6°	-6°	-6°	-6°	-6°	-6°	-7°	-7°	-7°	-5°	-5°	-4°	-4°	-4°	-4°	-5°	-6°	-7°	-8°	-9°	-9°	-9°	-9°	-8°
Wind direction and speed (mph)	NW 13	NW 11	NW 10	NW 10	NW 9	NW 9	NNW 9	NNW 8	N 8	NNE 8	NE 9	ENE 11	ENE 12	E 12	E 13	E 14	ESE 14	ESE 13	ESE 14	ESE 16	ESE 17	ESE 17	ESE 18	ESE 19
Wind gust (mph)	15	16	15	14	12	12	11	10	10	10	14	17	19	19	20	20	18	17	16	18	19	21	23	25
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	E	E	E	E	E	E	E	E	E	E	E	VG
Humidity	83%	84%	85%	89%	88%	88%	86%	84%	81%	74%	67%	59%	56%	55%	52%	54%	56%	64%	67%	68%	69%	71%	72%	71%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Wednesday (18 February 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%	<5%	<5%	10%	20%	20%	20%	30%	20%	20%	20%	20%	20%	20%	10%	10%	10%	10%	10%	<5%	<5%
Temperature (°C)	-1°	-1°	-1°	-1°	-1°	0°	-1°	-1°	-1°	-1°	0°	0°	0°	1°	1°	1°	0°	0°	0°	0°	0°	0°	-1°	-1°
Feels like temperature (°C)	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-7°	-7°	-7°	-7°	-7°	-7°	-7°	-7°	-7°	-8°	-8°	-8°	-8°
Wind direction and speed (mph)	ESE 20	ESE 20	ESE 21	ESE 22	ESE 23	ESE 23	ESE 24	ESE 24	ESE 24	ESE 25	ESE 26	ESE 28	ESE 28	ESE 28	ESE 28	ESE 26	ESE 25	ESE 24	ESE 23	ESE 23	ESE 23	ESE 22	ESE 22	ESE 21
Wind gust (mph)	27	28	29	30	31	32	34	35	36	37	39	40	39	39	38	36	34	32	31	29	28	27	26	25
Visibility (description)	VG	VG	VG	VG	VG	VG	G	G	G	M	M	M	M	M	M	M	G	G	G	G	G	VG	VG	VG
Humidity	72%	73%	74%	75%	75%	76%	76%	77%	78%	78%	77%	74%	70%	69%	70%	70%	72%	75%	76%	76%	77%	77%	79%	79%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Thursday (19 February 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%	<5%	<5%	<5%	<5%	10%	10%	10%	10%	20%	30%	30%	30%	40%	40%	40%	30%	20%	20%	10%	10%
Temperature (°C)	-1°	-1°	-1°	-1°	-1°	-1°	-1°	-2°	-2°	-1°	0°	1°	1°	2°	2°	2°	2°	2°	1°	1°	1°	1°	1°	1°
Feels like temperature (°C)	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-8°	-7°	-6°	-6°	-5°	-4°	-4°	-3°	-3°	-3°	-4°	-4°	-4°	-4°	-4°	-4°
Wind direction and speed (mph)	ESE 20	ESE 18	ESE 17	ESE 17	ESE 16	ESE 15	ESE 15	SE 14	SE 14	SE 15	SSE 16	SSE 18	SSE 20	S 20	S 19	SSW 17	SSW 15	SSW 14	SSW 14	SSW 14	SSW 14	SW 14	SW 14	SW 14
Wind gust (mph)	23	22	21	20	18	18	17	17	18	20	26	30	30	29	27	25	23	21	19	20	20	19	18	17
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	G	VG	VG	G	G	G	G	M	M	M
Humidity	79%	79%	79%	80%	82%	82%	81%	83%	83%	82%	77%	75%	71%	68%	67%	69%	73%	79%	84%	88%	92%	94%	95%	96%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Friday (20 February 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%	20%	40%	50%	60%	80%	90%	90%	70%	60%	60%	50%	60%	70%	70%	60%	60%	60%	60%	60%	60%	60%	70%
Temperature (°C)	1°	1°	1°	2°	2°	2°	2°	2°	3°	3°	4°	5°	6°	6°	6°	6°	6°	6°	5°	5°	5°	5°	5°	5°
Feels like temperature (°C)	-4°	-4°	-4°	-4°	-4°	-4°	-4°	-3°	-3°	-3°	-2°	-1°	0°	1°	1°	1°	1°	1°	0°	0°	0°	0°	0°	0°
Wind direction and speed (mph)	SW 14	SW 14	SW 15	SW 16	SSW 16	SSW 17	SSW 19	SSW 19	SSW 20	SSW 21	SSW 22	SW 22	SW 22	SW 22	SW 22	WSW 22	WSW 22	WSW 22	WSW 21	WSW 22	WSW 21	WSW 21	WSW 21	WSW 20
Wind gust (mph)	17	18	19	20	22	25	28	30	31	31	32	32	30	31	32	32	30	28	26	24	25	25	25	24
Visibility (description)	M	P	M	M	M	M	M	P	P	P	P	P	P	M	M	M	G	G	G	M	M	M	M	M
Humidity	95%	95%	95%	94%	95%	94%	94%	94%	96%	97%	98%	97%	96%	93%	91%	91%	89%	91%	92%	93%	93%	92%	93%	93%
UV	-	-	-	-	-	-	-	1	1	1	1	1	1	1	1	1	1	1	-	-	-	-	-	-

Saturday (21 February 2026)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	70%	60%	40%	40%	50%	60%	40%	30%
Temperature (°C)	6°	6°	7°	7°	8°	8°	8°	7°
Feels like temperature (°C)	1°	2°	2°	3°	4°	4°	4°	3°
Wind direction and speed (mph)	WSW 20	W 19	W 20	W 18	WSW 20	WSW 20	WSW 20	SW 22
Wind gust (mph)	25	28	26	28	29	28	28	27
Visibility (description)	M	P	P	P	M	M	M	M
Humidity	94%	95%	95%	95%	92%	90%	92%	92%
UV	-	-	-	1	1	1	-	-

Sunday (22 February 2026)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	50%	40%	30%	40%	40%	40%	40%	40%
Temperature (°C)	7°	7°	6°	6°	7°	7°	6°	5°
Feels like temperature (°C)	2°	2°	2°	2°	2°	2°	1°	0°
Wind direction and speed (mph)	SW 22	SW 20	WSW 20	SW 19	SW 22	SW 24	SW 21	WSW 21
Wind gust (mph)	28	28	28	31	33	30	29	28
Visibility (description)	M	M	M	M	M	G	M	M
Humidity	92%	90%	91%	89%	84%	80%	85%	88%
UV	-	-	-	1	1	1	-	-

News

Rain, wind and winter hazards in the forecast for the week ahead

Unsettled weather continues for the UK this week, with rain, wind, snow and ice in the forecast bringing the potential for disruption.

UK video forecast

Slieveavaddy weather map

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Northern Ireland weather forecast

Headline:

Dry with sunny spells on Tuesday.

This Evening and Tonight:

Mainly dry with variable amounts of cloud. The odd shower will affect the north and east during the first part of the night. Frost and icy patches. Minimum temperature 0 °C.

Tuesday:

All parts will have a dry day with some spells of sunshine. Cold. Light winds. Maximum temperature 6 °C.

Outlook for Wednesday to Friday:

Dry and cold on Wednesday and Thursday with bright spells. Overnight frost. Milder on Friday with rain spreading east at times.

Updated: 16:00 (UTC) on Mon 16 Feb 2026

UK long range weather forecast

Remaining changeable to begin with, as Atlantic low pressure systems push east over or to the north of the UK. This means further spells of wet and at times windy weather, interspersed with brighter, showery interludes. Some heavy rain is likely, especially across high ground areas in the west and north, though some sheltered eastern and southern parts may see comparively little rain. It will like be relatively mild overall, though some occasional colder spells are possible, particularly in the north. Around the turn of the month, there is a signal that high pressure will become more dominant, meaning more in the way of dry weather developing.

Updated: 14:00 (UTC) on Mon 16 Feb 2026

This period may start of predominantly settled, with high pressure close by to the UK. However the orientation of any anticyclone and its location relative to the UK is much more uncertain, which has knock-on effects on the type of weather we can expect. Towards mid March, there are indications that more generally changeable conditions of Atlantic origin may develop once more, with a return to spells of wind and rain at times.

Updated: 15:00 (UTC) on Mon 16 Feb 2026

Slieveavaddy (County Londonderry) weather

Find a forecast

Forecast days

Today

Today

Tue 17 Feb

Tue 17 Feb

Wed 18 Feb

Wed 18 Feb

Thu 19 Feb

Thu 19 Feb

Fri 20 Feb

Fri 20 Feb

Sat 21 Feb

Sat 21 Feb

Sun 22 Feb

Sun 22 Feb

7 day forecast for Slieveavaddy

Tooltip header

Rain, wind and winter hazards in the forecast for the week ahead

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

The water cycle

Weather warriors - lesson plan

Blocking patterns

3 tips for staying safe in fog

Why does the weather affect flights?

Slieveavaddy (County Londonderry) weather

Find a forecast

Forecast days

Today

Today

Tue 17 Feb

Tue 17 Feb

Wed 18 Feb

Wed 18 Feb

Thu 19 Feb

Thu 19 Feb

Fri 20 Feb

Fri 20 Feb

Sat 21 Feb

Sat 21 Feb

Sun 22 Feb

Sun 22 Feb

7 day forecast for Slieveavaddy

Rain, wind and winter hazards in the forecast for the week ahead

UK video forecast

Northern Ireland weather forecast

Monday 16 Feb - Friday 20 Feb

Headline:

This Evening and Tonight:

Tuesday:

Outlook for Wednesday to Friday:

UK long range weather forecast

Saturday 21 Feb - Monday 2 Mar

Tuesday 3 Mar - Tuesday 17 Mar

Nearest forecasts

More from the Met Office

Causes of climate change

The water cycle

Weather warriors - lesson plan

Blocking patterns

3 tips for staying safe in fog

Why does the weather affect flights?