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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Letterkenny, DL
Content continues below
May
Average Temperature
High
13°
Feels 11
Low
6°
Feels 4
Average Precipitation
15 Days
Rain amount
74.7mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
10°
18
14°
19
15°
20
15°
21
18°
22
17°
23
17°
24
18°
25
17°
26
17°
27
16°
28
19°
29
15°
30
15°
31
18°
Forecast
Sunday, May 17, 2026
Day
10°
Feels 9
Wind
18 km/h SW
Gust
27 km/h
Humidity
79%
P.O.P
100%
Rain
~10 mm
Night
4°
Feels 4
Wind
8 km/h NW
Gust
12 km/h
Humidity
96%
P.O.P
60%
Rain
2-4 mm
Historical Averages
May 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.