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Londonderry weather by month
Check out Londonderry weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Londonderry (°F)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 43 |
43 |
46 |
52 |
57 |
61 |
63 |
63 |
59 |
54 |
48 |
45 |
| Min temperature (night-time) | 34 |
34 |
36 |
37 |
41 |
46 |
50 |
50 |
46 |
43 |
37 |
36 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in Londonderry
| 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 Londonderry
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 23 |
18 |
21 |
17 |
18 |
18 |
19 |
20 |
21 |
22 |
22 |
23 |
| Average monthly rainfall (inches) | 5.1 |
3.7 |
3.9 |
2.9 |
3.2 |
3.1 |
3.2 |
3.9 |
4.3 |
5.0 |
4.7 |
4.9 |
More about Londonderry
Londonderry by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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The climate guide for Northern Ireland (Londonderry) 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 Londonderry?
Londonderry has a temperate climate with warm summers and some rainfall in all months.
Londonderry weather in January
Expect daytime maximum temperatures of 43°F in Londonderry, Northern Ireland in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 23 days with some rainfall and typically 5.1 inches of rainfall in the month.
- 43°F max day temperature
43 - 1 hour of sunshine per day
- 23 days with some rainfall
23 - 34°F min night temperature
34 - 8 hours of daylight per day
8 - No heat & humidity
0 - 5.1 inches of monthly rainfall
5.1 - No UV (Maximum) Index UV index
0
Londonderry weather in February
Expect daytime maximum temperatures of 43°F in Londonderry, Northern Ireland in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 3.7 inches of rainfall in the month.
- 43°F max day temperature
43 - 2 hours of sunshine per day
- 18 days with some rainfall
18 - 34°F min night temperature
34 - 10 hours of daylight per day
10 - No heat & humidity
0 - 3.7 inches of monthly rainfall
3.7 - 1 (Low) UV index
1
Londonderry weather in March
Expect daytime maximum temperatures of 46°F in Londonderry, Northern Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 21 days with some rainfall and typically 3.9 inches of rainfall in the month.
- 46°F max day temperature
46 - 3 hours of sunshine per day
- 21 days with some rainfall
21 - 36°F min night temperature
36 - 12 hours of daylight per day
12 - No heat & humidity
0 - 3.9 inches of monthly rainfall
3.9 - 2 (Low) UV index
2
Londonderry weather in April
Expect daytime maximum temperatures of 52°F in Londonderry, Northern Ireland in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 2.9 inches of rainfall in the month.
- 52°F max day temperature
52 - 5 hours of sunshine per day
- 17 days with some rainfall
17 - 37°F min night temperature
37 - 14 hours of daylight per day
14 - No heat & humidity
0 - 2.9 inches of monthly rainfall
2.9 - 3 (Moderate) UV index
3
Londonderry weather in May
Expect daytime maximum temperatures of 57°F in Londonderry, Northern Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 18 days with some rainfall and typically 3.2 inches of rainfall in the month.
- 57°F max day temperature
57 - 6 hours of sunshine per day
- 18 days with some rainfall
18 - 41°F min night temperature
41 - 16 hours of daylight per day
16 - No heat & humidity
0 - 3.2 inches of monthly rainfall
3.2 - 5 (Moderate) UV index
5
Londonderry weather in June
Expect daytime maximum temperatures of 61°F in Londonderry, Northern Ireland in June based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 3.1 inches of rainfall in the month.
- 61°F max day temperature
61 - 5 hours of sunshine per day
- 18 days with some rainfall
18 - 46°F min night temperature
46 - 17 hours of daylight per day
17 - No heat & humidity
0 - 3.1 inches of monthly rainfall
3.1 - 6 (High) UV index
6
Londonderry weather in July
Expect daytime maximum temperatures of 63°F in Londonderry, Northern Ireland in July based on long-term weather averages. There are 4 hours of sunshine per day on average with 19 days with some rainfall and typically 3.2 inches of rainfall in the month.
- 63°F max day temperature
63 - 4 hours of sunshine per day
- 19 days with some rainfall
19 - 50°F min night temperature
50 - 17 hours of daylight per day
17 - No heat & humidity
0 - 3.2 inches of monthly rainfall
3.2 - 6 (High) UV index
6
Londonderry weather in August
Expect daytime maximum temperatures of 63°F in Londonderry, Northern Ireland in August based on long-term weather averages. There are 4 hours of sunshine per day on average with 20 days with some rainfall and typically 3.9 inches of rainfall in the month.
- 63°F max day temperature
63 - 4 hours of sunshine per day
- 20 days with some rainfall
20 - 50°F min night temperature
50 - 15 hours of daylight per day
15 - No heat & humidity
0 - 3.9 inches of monthly rainfall
3.9 - 5 (Moderate) UV index
5
Londonderry weather in September
Expect daytime maximum temperatures of 59°F in Londonderry, Northern Ireland in September based on long-term weather averages. There are 3 hours of sunshine per day on average with 21 days with some rainfall and typically 4.3 inches of rainfall in the month.
- 59°F max day temperature
59 - 3 hours of sunshine per day
- 21 days with some rainfall
21 - 46°F min night temperature
46 - 13 hours of daylight per day
13 - No heat & humidity
0 - 4.3 inches of monthly rainfall
4.3 - 3 (Moderate) UV index
3
Londonderry weather in October
Expect daytime maximum temperatures of 54°F in Londonderry, Northern Ireland in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 22 days with some rainfall and typically 5.0 inches of rainfall in the month.
- 54°F max day temperature
54 - 3 hours of sunshine per day
- 22 days with some rainfall
22 - 43°F min night temperature
43 - 10 hours of daylight per day
10 - No heat & humidity
0 - 5.0 inches of monthly rainfall
5.0 - 2 (Low) UV index
2
Londonderry weather in November
Expect daytime maximum temperatures of 48°F in Londonderry, Northern Ireland in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 22 days with some rainfall and typically 4.7 inches of rainfall in the month.
- 48°F max day temperature
48 - 2 hours of sunshine per day
- 22 days with some rainfall
22 - 37°F min night temperature
37 - 8 hours of daylight per day
8 - No heat & humidity
0 - 4.7 inches of monthly rainfall
4.7 - 1 (Low) UV index
1
Londonderry weather in December
Expect daytime maximum temperatures of 45°F in Londonderry, Northern Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 23 days with some rainfall and typically 4.9 inches of rainfall in the month.
- 45°F max day temperature
45 - 1 hour of sunshine per day
- 23 days with some rainfall
23 - 36°F min night temperature
36 - 7 hours of daylight per day
7 - No heat & humidity
0 - 4.9 inches of monthly rainfall
4.9 - No UV (Maximum) Index UV index
0
More about Londonderry
Londonderry by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Northern Ireland
- Save up to £200 per person on cruises in 2025/2026
- Book online in the Fred Olsen Black Friday sale
- Travel before 31st December 2026 (inclusive)
Expires at 23:59 on Monday 1st Dec 2025 · View all Fred Olsen offers
Cruise deal finder
The climate guide for Northern Ireland (Londonderry) 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) | Imperial (°F)
More about the UK
Compare Londonderry with the UK
Below the Londonderry chart shows average maximum daytime temperature for Londonderry, Northern Ireland, UK and the UK (London).
Maximum daytime temperature (°F)
Metric (°C) | Imperial (°F)
Compare more Londonderry weather >>
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