Donegal weather by month

Check out Donegal weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & UV index

Temperature in Donegal (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	6	6	8	11	14	16	17	17	15	12	8	7
Min temperature (night-time)	1	1	1	3	5	8	10	9	8	6	2	2
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0
Sea temperature	8	8	8	9	11	13	15	16	15	13	11	10

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Donegal

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	1	2	3	5	5	5	4	4	3	3	2	1
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 Donegal

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	24	19	23	18	19	19	20	21	22	23	23	24
Average monthly rainfall (mm)	164	114	122	84	92	93	100	116	145	157	160	173

More about Donegal

Donegal by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Ireland (Donegal) 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 Donegal?

Donegal has a temperate climate with warm summers and some rainfall in all months.

Donegal weather in January

Expect daytime maximum temperatures of 6°C in Donegal, Ireland in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 24 days with some rainfall and typically 164 mm of rainfall in the month.

6
6°C max day temperature
1
1 hour of sunshine per day
24
24 days with some rainfall
1
1°C min night temperature
8
8 hours of daylight per day
0
No heat & humidity
164
164 mm of monthly rainfall
0
No UV (Maximum) Index UV index
8
8°C sea temperature

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Donegal weather in February

Expect daytime maximum temperatures of 6°C in Donegal, Ireland in February 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.

6
6°C max day temperature
2
2 hours of sunshine per day
19
19 days with some rainfall
1
1°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
114
114 mm of monthly rainfall
1
1 (Low) UV index
8
8°C sea temperature

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Donegal weather in March

Expect daytime maximum temperatures of 8°C in Donegal, Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 23 days with some rainfall and typically 122 mm of rainfall in the month.

8
8°C max day temperature
3
3 hours of sunshine per day
23
23 days with some rainfall
1
1°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
122
122 mm of monthly rainfall
2
2 (Low) UV index
8
8°C sea temperature

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Donegal weather in April

Expect daytime maximum temperatures of 11°C in Donegal, Ireland in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 84 mm of rainfall in the month.

11
11°C max day temperature
5
5 hours of sunshine per day
18
18 days with some rainfall
3
3°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
84
84 mm of monthly rainfall
3
3 (Moderate) UV index
9
9°C sea temperature

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Donegal weather in May

Expect daytime maximum temperatures of 14°C in Donegal, Ireland in May based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 92 mm of rainfall in the month.

14
14°C max day temperature
5
5 hours of sunshine per day
19
19 days with some rainfall
5
5°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
92
92 mm of monthly rainfall
5
5 (Moderate) UV index
11
11°C sea temperature

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Donegal weather in June

Expect daytime maximum temperatures of 16°C in Donegal, Ireland in June based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 93 mm of rainfall in the month.

16
16°C max day temperature
5
5 hours of sunshine per day
19
19 days with some rainfall
8
8°C min night temperature
17
17 hours of daylight per day
0
No heat & humidity
93
93 mm of monthly rainfall
6
6 (High) UV index
13
13°C sea temperature

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Donegal weather in July

Expect daytime maximum temperatures of 17°C in Donegal, Ireland in July based on long-term weather averages. There are 4 hours of sunshine per day on average with 20 days with some rainfall and typically 100 mm of rainfall in the month.

17
17°C max day temperature
4
4 hours of sunshine per day
20
20 days with some rainfall
10
10°C min night temperature
17
17 hours of daylight per day
0
No heat & humidity
100
100 mm of monthly rainfall
6
6 (High) UV index
15
15°C sea temperature

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Donegal weather in August

Expect daytime maximum temperatures of 17°C in Donegal, Ireland in August based on long-term weather averages. There are 4 hours of sunshine per day on average with 21 days with some rainfall and typically 116 mm of rainfall in the month.

17
17°C max day temperature
4
4 hours of sunshine per day
21
21 days with some rainfall
9
9°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
116
116 mm of monthly rainfall
5
5 (Moderate) UV index
16
16°C sea temperature

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Donegal weather in September

Expect daytime maximum temperatures of 15°C in Donegal, Ireland in September based on long-term weather averages. There are 3 hours of sunshine per day on average with 22 days with some rainfall and typically 145 mm of rainfall in the month.

15
15°C max day temperature
3
3 hours of sunshine per day
22
22 days with some rainfall
8
8°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
145
145 mm of monthly rainfall
3
3 (Moderate) UV index
15
15°C sea temperature

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Donegal weather in October

Expect daytime maximum temperatures of 12°C in Donegal, Ireland in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 23 days with some rainfall and typically 157 mm of rainfall in the month.

12
12°C max day temperature
3
3 hours of sunshine per day
23
23 days with some rainfall
6
6°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
157
157 mm of monthly rainfall
2
2 (Low) UV index
13
13°C sea temperature

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Donegal weather in November

Expect daytime maximum temperatures of 8°C in Donegal, Ireland in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 23 days with some rainfall and typically 160 mm of rainfall in the month.

8
8°C max day temperature
2
2 hours of sunshine per day
23
23 days with some rainfall
2
2°C min night temperature
8
8 hours of daylight per day
0
No heat & humidity
160
160 mm of monthly rainfall
1
1 (Low) UV index
11
11°C sea temperature

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Donegal weather in December

Expect daytime maximum temperatures of 7°C in Donegal, Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 24 days with some rainfall and typically 173 mm of rainfall in the month.