Coleraine weather in January

In January, Coleraine sees average daytime highs of 8°C and overnight lows near 6°C, with 124 mm of precipitation across 20.3 wet days and about 7.5 hours of daylight. It is the 11th-warmest and 4th-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 7% of the time in January, and the air most often feels dry.

Daylight stretches from about 7 hours at the start of January to 8 h 18 min by month's end. Set against the rest of the year, January is Coleraine's 12th-clearest and 1st-windiest month. For the whole year in context, see Coleraine's year-round climate.

Daytime high
11th warmest
Overnight low
2nd coldest
Precipitation
124 mm
20.3 wet days
Daylight
7 h 30 min
8:52 AM – 4:20 PM
Cloud cover
78%
12th clearest
Wind
33 km/h
1st windiest
Solar energy
0.56 kWh/m²
Travel score
1.0
out of 10

Coleraine is town and civil parish in County Londonderry, Northern Ireland.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Coleraine reaches about 8°C in the afternoon and slips back to 6°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 10°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

10°15°151015202531
Avg high (°C)Avg low (°C)
186
286
386
486
586
686
786
886
986
1086
1186
1286
1386
1486
1586
1686
1786
1886
1986
2086
2186
2286
2386
2485
2585
2685
2785
2885
2985
3085
3185

Coleraine weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 12420.30.67.51.0
Feb / 10016.919.20.9
Mar / 91160.811.41.1
Apr / 7813.90.213.81.6
May11° / 7113.4015.82.3
Jun13° / 11°8614.60172.9
Jul14° / 13°9516.1016.53.5
Aug15° / 13°10416.2014.73.7
Sep14° / 12°10116.3012.53.5
Oct12° / 10°13918.9010.22.6
Nov10° / 14920.80.28.11.7
Dec / 147200.771.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32377
42476
52476
62377
72377
82377
92377
102377
112377
122377
132377
142377
152377
162377
172278
182278
192278
202080
211981
221981
231981
241981
251981
261981
271981
282080
292080
302080
312080

Chance of precipitation in January

Any precipitationSnow

Coleraine gets around 124 mm of rain and snow over 20.3 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 65% and peaks near 68% on the wettest days, and about 1 day brings snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
1682
2682
3672
4672
5672
6672
7672
8662
9662
10662
11652
12652
13652
14652
15652
16652
17652
18652
19652
20652
21642
22642
23643
24643
25643
26643
27643
28643
29643
30643
31643

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January 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%151015202531
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
29100
30100
31100

Wind in January

Winds average 33 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 32 km/h on the calmest days to 33 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
133windy
233windy
333windy
433windy
533windy
633windy
733windy
833windy
933windy
1033windy
1133windy
1233windy
1333windy
1433windy
1533windy
1633windy
1733windy
1832windy
1932windy
2032windy
2132windy
2232windy
2332windy
2432windy
2532windy
2632windy
2732windy
2832windy
2932windy
3032windy
3132windy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 7 hours at the start of January to 8 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over January. Sunrise moves from 9:01 AM to 8:32 AM, and sunset from 3:59 PM to 4:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.09:013:59
27.09:014:00
37.09:004:01
47.09:004:02
57.19:004:03
67.18:594:05
77.18:594:06
87.28:584:07
97.28:584:09
107.28:574:10
117.38:564:12
127.38:564:13
137.38:554:15
147.48:544:17
157.48:534:18
167.58:524:20
177.58:514:22
187.68:504:23
197.68:494:25
207.78:484:27
217.78:464:29
227.88:454:31
237.88:444:32
247.98:434:34
257.98:414:36
268.08:404:38
278.08:384:40
288.18:374:42
298.18:354:44
308.28:344:46
318.38:324:48

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.56 kWh/m².

For context, solar energy here swings from a low near 0.41 kWh/m² to a high of 5 kWh/m² in May across the year — January's 0.56 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.4Dim
20.4Dim
30.4Dim
40.5Dim
50.5Dim
60.5Dim
70.5Dim
80.5Dim
90.5Dim
100.5Dim
110.5Dim
120.5Dim
130.5Dim
140.5Dim
150.5Dim
160.6Dim
170.6Dim
180.6Dim
190.6Dim
200.6Dim
210.6Dim
220.6Dim
230.7Dim
240.7Dim
250.7Dim
260.7Dim
270.7Dim
280.8Dim
290.8Dim
300.8Dim
310.8Dim
Planning a trip in January

Is January a good time to visit Coleraine?

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

1.0
Sightseeing
11th-best month of the year
Beach & pool
never really warm enough

January is a weaker month for outdoor sightseeing in Coleraine.

What to pack for Coleraine in January

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

In January, Coleraine sees daytime highs around 8°C and nights near 6°C. Pack a warm layer, rain gear and a windbreaker. Worth having: a heavy coat. About 20 days see rain.

a warm layerrain geara windbreakera heavy coat

Sea temperature near Coleraine in January

The nearest coast averages about 9°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 km away) is warmest in September 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
May9Bracing
Jun11Bracing
Jul13Bracing
Aug14Bracing
Sep14Bracing
Oct13Bracing
Nov12Bracing
Dec10Bracing

UV index in Coleraine in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Coleraine peaks around July 12 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 12UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun5Moderate
Jul5High
Aug4Moderate
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Coleraine?

Coleraine sits at 55.1°N, 6.7°W, 5 m above sea level, in United Kingdom. The nearest listed city is Ballymena, 39 km away.

LetterkennyNewtownabbeyOmagh

Topography around Coleraine

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

Within 3 km, the terrain around Coleraine has only modest variations in elevation — a maximum elevation change of 82 m around an average of 30 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 385 m; within 80 km, large variations in elevation — a maximum elevation change of 675 m.

The land around Coleraine is covered by grassland (54%) and trees (22%) within 3 km, grassland (57%) and water (24%) within 16 km, and grassland (46%) and water (46%) within 80 km.

3 km
82 m
16 km
385 m
80 km
675 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Ballymena 39 km · Derry 44 km · Londonderry County Borough 44 km · Antrim 55 km · Larne 63 km · Letterkenny 71 km · Newtownabbey 72 km · Omagh 72 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 Coleraine (55.1333°, -6.6667°, elevation 5 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).