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Larne weather by month
Check out Larne weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Larne (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 6 |
6 |
7 |
10 |
13 |
16 |
17 |
17 |
15 |
12 |
8 |
7 |
| Min temperature (night-time) | 1 |
1 |
2 |
3 |
5 |
8 |
10 |
10 |
8 |
6 |
3 |
2 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Sea temperature | 9 |
8 |
7 |
8 |
9 |
11 |
12 |
13 |
14 |
13 |
12 |
10 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in Larne
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 8 |
10 |
12 |
14 |
16 |
17 |
17 |
15 |
13 |
10 |
8 |
7 |
| UV Index (Maximum) | 0 |
1 |
2 |
3 |
5 |
6 |
6 |
5 |
3 |
2 |
1 |
0 |
Rainfall in Larne
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 20 |
15 |
19 |
15 |
16 |
15 |
15 |
17 |
17 |
19 |
19 |
20 |
| Average monthly rainfall (mm) | 117 |
80 |
93 |
69 |
71 |
77 |
74 |
102 |
112 |
123 |
114 |
108 |
More about Larne
Larne by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Northern Ireland
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The climate guide for Northern Ireland (Larne) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Larne?
Larne has a temperate climate with warm summers and some rainfall in all months.
Larne weather in January
Expect daytime maximum temperatures of 6°C in Larne, Northern Ireland in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 117 mm of rainfall in the month.
- 6°C max day temperature
6 - 1 hour of sunshine per day
- 20 days with some rainfall
20 - 1°C min night temperature
1 - 8 hours of daylight per day
8 - No heat & humidity
0 - 117 mm of monthly rainfall
117 - No UV (Maximum) Index UV index
0 - 9°C sea temperature
9
Larne weather in February
Expect daytime maximum temperatures of 6°C in Larne, Northern Ireland in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 15 days with some rainfall and typically 80 mm of rainfall in the month.
- 6°C max day temperature
6 - 2 hours of sunshine per day
- 15 days with some rainfall
15 - 1°C min night temperature
1 - 10 hours of daylight per day
10 - No heat & humidity
0 - 80 mm of monthly rainfall
80 - 1 (Low) UV index
1 - 8°C sea temperature
8
Larne weather in March
Expect daytime maximum temperatures of 7°C in Larne, Northern Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 19 days with some rainfall and typically 93 mm of rainfall in the month.
- 7°C max day temperature
7 - 3 hours of sunshine per day
- 19 days with some rainfall
19 - 2°C min night temperature
2 - 12 hours of daylight per day
12 - No heat & humidity
0 - 93 mm of monthly rainfall
93 - 2 (Low) UV index
2 - 7°C sea temperature
7
Larne weather in April
Expect daytime maximum temperatures of 10°C in Larne, Northern Ireland in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 69 mm of rainfall in the month.
- 10°C max day temperature
10 - 5 hours of sunshine per day
- 15 days with some rainfall
15 - 3°C min night temperature
3 - 14 hours of daylight per day
14 - No heat & humidity
0 - 69 mm of monthly rainfall
69 - 3 (Moderate) UV index
3 - 8°C sea temperature
8
Larne weather in May
Expect daytime maximum temperatures of 13°C in Larne, Northern Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 71 mm of rainfall in the month.
- 13°C max day temperature
13 - 6 hours of sunshine per day
- 16 days with some rainfall
16 - 5°C min night temperature
5 - 16 hours of daylight per day
16 - No heat & humidity
0 - 71 mm of monthly rainfall
71 - 5 (Moderate) UV index
5 - 9°C sea temperature
9
Larne weather in June
Expect daytime maximum temperatures of 16°C in Larne, Northern Ireland in June based on long-term weather averages. There are 6 hours of sunshine per day on average with 15 days with some rainfall and typically 77 mm of rainfall in the month.
- 16°C max day temperature
16 - 6 hours of sunshine per day
- 15 days with some rainfall
15 - 8°C min night temperature
8 - 17 hours of daylight per day
17 - No heat & humidity
0 - 77 mm of monthly rainfall
77 - 6 (High) UV index
6 - 11°C sea temperature
11
Larne weather in July
Expect daytime maximum temperatures of 17°C in Larne, Northern Ireland in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 74 mm of rainfall in the month.
- 17°C max day temperature
17 - 5 hours of sunshine per day
- 15 days with some rainfall
15 - 10°C min night temperature
10 - 17 hours of daylight per day
17 - No heat & humidity
0 - 74 mm of monthly rainfall
74 - 6 (High) UV index
6 - 12°C sea temperature
12
Larne weather in August
Expect daytime maximum temperatures of 17°C in Larne, Northern Ireland in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 102 mm of rainfall in the month.
- 17°C max day temperature
17 - 5 hours of sunshine per day
- 17 days with some rainfall
17 - 10°C min night temperature
10 - 15 hours of daylight per day
15 - No heat & humidity
0 - 102 mm of monthly rainfall
102 - 5 (Moderate) UV index
5 - 13°C sea temperature
13
Larne weather in September
Expect daytime maximum temperatures of 15°C in Larne, Northern Ireland in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 17 days with some rainfall and typically 112 mm of rainfall in the month.
- 15°C max day temperature
15 - 4 hours of sunshine per day
- 17 days with some rainfall
17 - 8°C min night temperature
8 - 13 hours of daylight per day
13 - No heat & humidity
0 - 112 mm of monthly rainfall
112 - 3 (Moderate) UV index
3 - 14°C sea temperature
14
Larne weather in October
Expect daytime maximum temperatures of 12°C in Larne, Northern Ireland in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 19 days with some rainfall and typically 123 mm of rainfall in the month.
- 12°C max day temperature
12 - 3 hours of sunshine per day
- 19 days with some rainfall
19 - 6°C min night temperature
6 - 10 hours of daylight per day
10 - No heat & humidity
0 - 123 mm of monthly rainfall
123 - 2 (Low) UV index
2 - 13°C sea temperature
13
Larne weather in November
Expect daytime maximum temperatures of 8°C in Larne, Northern Ireland in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 114 mm of rainfall in the month.
- 8°C max day temperature
8 - 2 hours of sunshine per day
- 19 days with some rainfall
19 - 3°C min night temperature
3 - 8 hours of daylight per day
8 - No heat & humidity
0 - 114 mm of monthly rainfall
114 - 1 (Low) UV index
1 - 12°C sea temperature
12
Larne weather in December
Expect daytime maximum temperatures of 7°C in Larne, Northern Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 108 mm of rainfall in the month.
- 7°C max day temperature
7 - 1 hour of sunshine per day
- 20 days with some rainfall
20 - 2°C min night temperature
2 - 7 hours of daylight per day
7 - No heat & humidity
0 - 108 mm of monthly rainfall
108 - No UV (Maximum) Index UV index
0 - 10°C sea temperature
10
More about Larne
Larne by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Northern Ireland
- Explore latest offers on Fred Olsen Cruises in 2026/2027
- Find last minute deals or early bird discounts
- Filter offers by price, destination, ship & departure point
Cruise deal finder
The climate guide for Northern Ireland (Larne) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the UK
Compare Larne with the UK
Below the Larne chart shows average maximum daytime temperature for Larne, Larne, Northern Ireland and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
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