Donegal climate guide

Temperature in Donegal (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
6°C maximum daytime temperature in January in Donegal6
6°C maximum daytime temperature in February in Donegal6
8°C maximum daytime temperature in March in Donegal8
11°C maximum daytime temperature in April in Donegal11
14°C maximum daytime temperature in May in Donegal14
16°C maximum daytime temperature in June in Donegal16
17°C maximum daytime temperature in July in Donegal17
17°C maximum daytime temperature in August in Donegal17
15°C maximum daytime temperature in September in Donegal15
12°C maximum daytime temperature in October in Donegal12
8°C maximum daytime temperature in November in Donegal8
7°C maximum daytime temperature in December in Donegal7
Min temperature (night-time)
1°C minimum night-time temperature in January in Donegal1
1°C minimum night-time temperature in February in Donegal1
1°C minimum night-time temperature in March in Donegal1
3°C minimum night-time temperature in April in Donegal3
5°C minimum night-time temperature in May in Donegal5
8°C minimum night-time temperature in June in Donegal8
10°C minimum night-time temperature in July in Donegal10
9°C minimum night-time temperature in August in Donegal9
8°C minimum night-time temperature in September in Donegal8
6°C minimum night-time temperature in October in Donegal6
2°C minimum night-time temperature in November in Donegal2
2°C minimum night-time temperature in December in Donegal2
Sea temperature
8°C sea temperature in January in Donegal8
8°C sea temperature in February in Donegal8
8°C sea temperature in March in Donegal8
9°C sea temperature in April in Donegal9
11°C sea temperature in May in Donegal11
13°C sea temperature in June in Donegal13
15°C sea temperature in July in Donegal15
16°C sea temperature in August in Donegal16
15°C sea temperature in September in Donegal15
13°C sea temperature in October in Donegal13
11°C sea temperature in November in Donegal11
10°C sea temperature in December in Donegal10

Sunshine & Daylight in Donegal

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
8 hours of daylight per day in January in Donegal8
10 hours of daylight per day in February in Donegal10
12 hours of daylight per day in March in Donegal12
14 hours of daylight per day in April in Donegal14
16 hours of daylight per day in May in Donegal16
17 hours of daylight per day in June in Donegal17
17 hours of daylight per day in July in Donegal17
15 hours of daylight per day in August in Donegal15
13 hours of daylight per day in September in Donegal13
10 hours of daylight per day in October in Donegal10
8 hours of daylight per day in November in Donegal8
7 hours of daylight per day in December in Donegal7

Rainfall in Donegal

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
24 days with some rainfall in January in Donegal24
19 days with some rainfall in February in Donegal19
23 days with some rainfall in March in Donegal23
18 days with some rainfall in April in Donegal18
19 days with some rainfall in May in Donegal19
19 days with some rainfall in June in Donegal19
20 days with some rainfall in July in Donegal20
21 days with some rainfall in August in Donegal21
22 days with some rainfall in September in Donegal22
23 days with some rainfall in October in Donegal23
23 days with some rainfall in November in Donegal23
24 days with some rainfall in December in Donegal24
Average monthly rainfall (mm)
164 mm monthly rainfall in January in Donegal164
114 mm monthly rainfall in February in Donegal114
122 mm monthly rainfall in March in Donegal122
84 mm monthly rainfall in April in Donegal84
92 mm monthly rainfall in May in Donegal92
93 mm monthly rainfall in June in Donegal93
100 mm monthly rainfall in July in Donegal100
116 mm monthly rainfall in August in Donegal116
145 mm monthly rainfall in September in Donegal145
157 mm monthly rainfall in October in Donegal157
160 mm monthly rainfall in November in Donegal160
173 mm monthly rainfall in December in Donegal173

More climate for Donegal

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
No UV (maximum) index in January in Donegal0
UV (maximum) index 1 (Low) in February in Donegal1
UV (maximum) index 2 (Low) in March in Donegal2
UV (maximum) index 3 (Moderate) in April in Donegal3
UV (maximum) index 5 (Moderate) in May in Donegal5
UV (maximum) index 6 (High) in June in Donegal6
UV (maximum) index 6 (High) in July in Donegal6
UV (maximum) index 5 (Moderate) in August in Donegal5
UV (maximum) index 3 (Moderate) in September in Donegal3
UV (maximum) index 2 (Low) in October in Donegal2
UV (maximum) index 1 (Low) in November in Donegal1
No UV (maximum) index in December in Donegal0
Heat & Humidity
No heat & humidity in January in Donegal0
No heat & humidity in February in Donegal0
No heat & humidity in March in Donegal0
No heat & humidity in April in Donegal0
No heat & humidity in May in Donegal0
No heat & humidity in June in Donegal0
No heat & humidity in July in Donegal0
No heat & humidity in August in Donegal0
No heat & humidity in September in Donegal0
No heat & humidity in October in Donegal0
No heat & humidity in November in Donegal0
No heat & humidity in December in Donegal0

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

What's the climate like in Donegal?

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

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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.

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