Donegal weather by month

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

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
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
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

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

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
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

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 about Donegal

Donegal by month

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

Recommended for Ireland

IHG: Park Stay & Go airport package

  • Book a Park Stay & Go airport package with IHG
  • Get 1 night's stay + up to 15 nights airport parking
  • Available at popular airports, train stations & docks
Go to IHG deal >>

View all IHG offers

Save on holidays in 2022/2023 with TUI Ireland

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.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Tropical storm risk: Donegal hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
0
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

TUI: up to 7% off holidays booked online

  • Book online with TUI & save up to 7% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

Back to top

More about Ireland

Compare Donegal with the USA

Below the Donegal chart shows average maximum daytime temperature for Donegal, County Donegal, Ireland and the USA (Washington).

Maximum daytime temperature (°C)

Donegal, County Donegal, Ireland
USA (Washington)
6
5
6
7
8
13
11
19
14
24
16
29
17
31
17
30
15
26
12
20
8
14
7
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

Compare more Donegal weather >>

Back to top

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^