The best time to visit Herm is in August. In this period you have a pleasant temperature and almost no precipitation. On the island of Herm, the warmest month is August with 18°C and the coldest is February with 9°C.
In the table below you can quickly see the monthly average weather in Herm, the monthly temperature or when the precipitation is highest. The monthly average climate data is based on data from the last 30 years.
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Herm has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Herm is 13° degrees and there is about 463 mm of rain in a year. It is dry for 131 days a year with an average humidity of 80% and an UV-index of 4.
Herm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Day temp. (°C)
10
9
10
11
13
15
17
18
17
16
13
11
Night temp. (°C)
8
7
8
10
12
14
16
17
16
14
12
10
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Precipitation (mm)
58
41
33
23
21
23
26
34
28
45
71
60
Days with rain
22
17
16
13
12
10
13
13
12
17
22
21
Dry days
9
11
15
17
19
20
18
18
18
14
8
10
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun hours per day
4
4
6
10
9
9
10
9
9
5
4
4
Wind force (Bft)
5
5
5
4
4
4
4
4
4
5
5
5
UV-index
3
2
3
4
4
4
5
5
5
4
3
3
Herm weather by month
What is the average Herm weather like in a given month? Let's find out! Click on a month to check all the monthly averages for sunshine, temperature highs and lows, percentage chance of rain per day, snowfall accumulation and number of rainy days.
Skyscanner
10°C
11°C