Castlereagh weather in February

In February, Castlereagh sees average daytime highs of 8°C and overnight lows near 4°C, with 62 mm of precipitation across 12.1 wet days and about 9.3 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 8°C through the month. The sky is clear or mostly clear about 10% of the time in February, and the air most often feels dry.

Daylight stretches from about 8 h 24 min at the start of February to 10 h 18 min by month's end. Set against the rest of the year, February is Castlereagh's 6th-clearest and 2nd-windiest month. For the whole year in context, see Castlereagh's year-round climate.

Daytime high
11th warmest
Overnight low
1st coldest
Precipitation
62 mm
12.1 wet days
Daylight
9 h 18 min
7:58 AM – 5:18 PM
Cloud cover
76%
6th clearest
Wind
19 km/h
2nd windiest
Solar energy
1.31 kWh/m²
Travel score
1.1
out of 10

Castlereagh is settlement near Belfast in Northern Ireland, UK.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in February

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 8°C through the month.

A typical February day in Castlereagh reaches about 8°C in the afternoon and slips back to 4°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 11°C. Set against its neighbours, February runs on par with January and about 1°C cooler than March.

10°15°151015202528
Avg high (°C)Avg low (°C)
173
273
383
484
584
684
784
884
984
1084
1184
1284
1384
1484
1584
1684
1784
1884
1984
2084
2184
2284
2384
2483
2583
2683
2783
2883

How February really feels in Castlereagh

Once humidity and wind are folded in, February averages 0 days that feel above 32°C and 28 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
28
wind chill below the day's low

The story in February is cold — wind chill drags the overnight "feels like" below the raw low.

Castlereagh weather by month

How February compares with the rest of the year at a glance. February is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7714.20.87.61.0
Feb / 6212.10.99.31.1
Mar / 6213.40.611.51.6
Apr11° / 65130.213.72.5
May14° / 7014.10.115.83.5
Jun16° / 11°7513.2016.94.4
Jul18° / 12°8114.6016.44.9
Aug18° / 12°8114.2014.74.9
Sep16° / 11°7012.5012.54.4
Oct13° / 8713.5010.23.1
Nov10° / 85140.28.21.9
Dec / 8213.50.57.11.2

Cloud cover in February

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in February.

Beyond those clear spells, partly cloudy skies cover about 15% of February, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202528
Clearer (%)Cloudier (%)
12575
22575
32575
42476
52476
62575
72575
82575
92575
102575
112476
122575
132575
142575
152476
162575
172476
182476
192476
202476
212575
222575
232476
242476
252575
262575
272674
282674

Chance of precipitation in February

Any precipitationSnow

Castlereagh gets around 62 mm of rain and snow over 12.1 wet days in February, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 46% on the wettest days, and about 1 day brings snow.

0%20%40%60%151015202528
Rain chance (%)Snow chance (%)
1452
2452
3452
4452
5453
6453
7453
8443
9443
10433
11423
12423
13423
14413
15413
16413
17413
18413
19413
20423
21423
22424
23434
24434
25444
26454
27454
28464

Humidity in February

DryComfortableHumidMuggyOppressiveMiserable

Most of February feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, February lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202528
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100

Wind in February

Winds average 19 km/h in February.

Across February, daily wind ranges from about 18 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202528
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze

Sunrise & sunset in February

DaylightNight

Daylight runs from about 8 h 24 min at the start of February to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 114 minutes over February. Sunrise moves from 8:25 AM to 7:29 AM, and sunset from 4:49 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202528
Daylight (h)Sunrise (AM)Sunset (PM)
18.48:254:49
28.58:234:51
38.58:214:53
48.68:204:55
58.78:184:57
68.78:165:00
78.88:145:02
88.98:125:04
98.98:105:06
109.08:085:08
119.18:065:10
129.18:045:12
139.28:025:14
149.38:005:16
159.37:585:18
169.47:565:20
179.57:545:22
189.57:525:24
199.67:505:26
209.77:485:28
219.87:455:30
229.87:435:32
239.97:415:34
2410.07:395:37
2510.07:365:39
2610.17:345:41
2710.27:325:43
2810.37:295:45

Solar energy in February

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in February, about 1.31 kWh/m².

For context, solar energy here swings from a low near 0.47 kWh/m² to a high of 4.95 kWh/m² in May across the year — February's 1.31 kWh/m² falls in the middle.

00.511.522.5151015202528
Solar energy (kWh/m²)Level
10.9Dim
20.9Dim
31.0Dim
41.0Dim
51.0Dim
61.1Dim
71.1Dim
81.1Dim
91.1Dim
101.2Dim
111.2Dim
121.2Dim
131.3Dim
141.3Dim
151.3Dim
161.4Dim
171.4Dim
181.4Dim
191.5Dim
201.5Dim
211.5Dim
221.6Dim
231.6Dim
241.6Dim
251.7Dim
261.7Dim
271.8Dim
281.8Dim
Planning a trip in February

Is February a good time to visit Castlereagh?

Our two travel scores rate February for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

1.1
Sightseeing
11th-best month of the year
0.0
Beach & pool
7th-best month of the year

February is a weaker month for outdoor sightseeing in Castlereagh.

What to pack for Castlereagh in February

From February's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In February, Castlereagh sees daytime highs around 8°C and nights near 4°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Castlereagh in February

The nearest coast averages about 8°C in February — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 33 km away) is warmest in August at about 14°C and coldest in March near 8°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

6°8°10°12°14°16°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar8Bracing
Apr8Bracing
May10Bracing
Jun12Bracing
Jul13Bracing
Aug14Bracing
Sep14Bracing
Oct14Bracing
Nov12Bracing
Dec11Bracing

UV index in Castlereagh in February

LowModerateHighVery highExtreme

Clear-sky midday UV in February peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Castlereagh peaks around July 24 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 5 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 24UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun5High
Jul5High
Aug5High
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Castlereagh?

Castlereagh sits at 54.6°N, 5.9°W, 29 m above sea level, in United Kingdom. The nearest listed city is Belfast, 4.0 km away.

Topography around Castlereagh

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Castlereagh.

Within 3 km, the terrain around Castlereagh has only modest variations in elevation — a maximum elevation change of 178 m around an average of 61 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 495 m; within 80 km, large variations in elevation — a maximum elevation change of 860 m.

The land around Castlereagh is covered by artificial surfaces (41%), grassland (32%) and trees (24%) within 3 km, grassland (55%) within 16 km, and water (47%) and grassland (46%) within 80 km.

3 km
178 m
16 km
495 m
80 km
860 m
treesgrasslandcroplandartificial surfaceswater
February weather nearby: Belfast 4.0 km · Newtownabbey 10 km · Lisburn 11 km · Newtownards 13 km · Carrickfergus 17 km · Bangor 17 km · Antrim 26 km · Larne 31 km

United Kingdom travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 89% of US
price level, 2025
GDP per capita
$57,602
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
3.2
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 60%none 26%Muslim 4%other 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Castlereagh (54.5735°, -5.8847°, elevation 29 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).