Larne weather in January

In January, Larne sees average daytime highs of 8°C and overnight lows near 5°C, with 99 mm of precipitation across 17.2 wet days and about 7.6 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 12% 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 Larne's 9th-clearest and 1st-windiest month. For the whole year in context, see Larne's year-round climate.

Daytime high
11th warmest
Overnight low
2nd coldest
Precipitation
99 mm
17.2 wet days
Daylight
7 h 30 min
8:47 AM – 4:18 PM
Cloud cover
75%
9th clearest
Wind
25 km/h
1st windiest
Solar energy
0.62 kWh/m²
Travel score
0.9
out of 10

Larne is town in County Antrim, Northern Ireland, UK.

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 Larne reaches about 8°C in the afternoon and slips back to 5°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 10°C. Set against its neighbours, January runs on par with December and on par with February.

10°15°151015202531
Avg high (°C)Avg low (°C)
185
285
385
485
585
685
785
885
985
1085
1185
1285
1385
1485
1585
1685
1785
1885
1985
2075
2175
2275
2375
2475
2575
2675
2775
2875
2975
3075
3175

How January really feels in Larne

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 5 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
5
wind chill below the day's low

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

Larne 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 / 9917.20.87.60.9
Feb / 791419.30.9
Mar / 7614.60.711.41.2
Apr10° / 6813.40.213.81.8
May12° / 7213.5015.82.7
Jun14° / 11°8213.7016.93.5
Jul15° / 12°9415.4016.54.0
Aug16° / 13°9215.1014.74.2
Sep15° / 12°8613.8012.53.8
Oct12° / 10°11416.2010.22.8
Nov10° / 11317.30.18.11.8
Dec / 10915.70.471.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42872
52971
62971
72971
82971
92971
102872
112872
122773
132773
142773
152773
162773
172773
182674
192575
202575
212674
222674
232575
242674
252674
262674
272674
282773
292773
302773
312674

Chance of precipitation in January

Any precipitationSnow

Larne gets around 99 mm of rain and snow over 17.2 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 55% and peaks near 57% on the wettest days, and about 1 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1562
2562
3572
4572
5572
6572
7572
8572
9573
10573
11573
12573
13573
14563
15563
16563
17553
18553
19553
20553
21543
22543
23543
24542
25542
26532
27532
28532
29532
30532
31542

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 25 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 24 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
125breezy
225breezy
325breezy
425breezy
525breezy
625breezy
725breezy
825breezy
925breezy
1025breezy
1125breezy
1225breezy
1325breezy
1425breezy
1525breezy
1625breezy
1725breezy
1825breezy
1925breezy
2025breezy
2125breezy
2225breezy
2325breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy
3124breezy

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 8:56 AM to 8:27 AM, and sunset from 3:57 PM to 4:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.08:563:57
27.18:553:58
37.18:554:00
47.18:554:01
57.18:554:02
67.28:544:03
77.28:544:04
87.28:534:06
97.28:534:07
107.38:524:09
117.38:514:10
127.48:514:12
137.48:504:13
147.48:494:15
157.58:484:16
167.58:474:18
177.68:464:20
187.68:454:21
197.78:444:23
207.78:434:25
217.88:424:27
227.88:404:29
237.98:394:30
247.98:384:32
258.08:364:34
268.08:354:36
278.18:334:38
288.18:324:40
298.28:304:42
308.38:294:44
318.38:274:46

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.62 kWh/m².

For context, solar energy here swings from a low near 0.46 kWh/m² to a high of 5.1 kWh/m² in June across the year — January's 0.62 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.5Dim
20.5Dim
30.5Dim
40.5Dim
50.5Dim
60.5Dim
70.5Dim
80.5Dim
90.5Dim
100.6Dim
110.6Dim
120.6Dim
130.6Dim
140.6Dim
150.6Dim
160.6Dim
170.6Dim
180.6Dim
190.7Dim
200.7Dim
210.7Dim
220.7Dim
230.7Dim
240.7Dim
250.8Dim
260.8Dim
270.8Dim
280.8Dim
290.8Dim
300.9Dim
310.9Dim
Planning a trip in January

Is January a good time to visit Larne?

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

0.9
Sightseeing
11th-best month of the year
Beach & pool
never really warm enough

January is a weaker month for outdoor sightseeing in Larne.

What to pack for Larne in January

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

In January, Larne sees daytime highs around 8°C and nights near 5°C. Pack a warm layer and rain gear. Worth having: a heavy coat and a windbreaker. About 17 days see rain.

a warm layerrain geara heavy coata windbreaker

Sea temperature near Larne 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 offshore 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
Jul12Bracing
Aug13Bracing
Sep14Bracing
Oct14Bracing
Nov12Bracing
Dec11Bracing

UV index in Larne 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 Larne peaks around May 22 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowMay 22UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun5High
Jul5High
Aug5Moderate
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Larne?

Larne sits at 54.9°N, 5.8°W, 4 m above sea level, in United Kingdom. The nearest listed city is Carrickfergus, 15 km away.

Topography around Larne

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

Within 3 km, the terrain around Larne has only modest variations in elevation — a maximum elevation change of 141 m around an average of 44 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 473 m; within 80 km, large variations in elevation — a maximum elevation change of 841 m.

The land around Larne is covered by grassland (39%) and water (34%) within 3 km, water (47%) and grassland (45%) within 16 km, and water (50%) and grassland (41%) within 80 km.

3 km
141 m
16 km
473 m
80 km
841 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Carrickfergus 15 km · Newtownabbey 22 km · Bangor 23 km · Belfast 29 km · Antrim 29 km · Ballymena 29 km · Newtownards 30 km · Castlereagh 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 Larne (54.85°, -5.8167°, elevation 4 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).