Weather in Asterholma in September

General weather information about Asterholma

Average annual temperature is 7.0 °C

Absolute maximum temperature: 23.2 °C

Absolute minimum temperature: -8.3 °C

Number of sunny days: 143 days

Number of rainy days: 177 days

Number of snow days: 45 days

Look at detailed online map of Asterholma

* Weather data for Asterholma Åland is based on climate observations for 2026 year

Asterholma air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	4.3	4.7	4.0	6.9	12.9	20.3	19.0	23.2	18.1	15.0	8.9	6.1
Average daytime temperature (°C)	2.3	1.1	0.9	3.9	8.7	14.7	17.2	17.6	16.5	9.0	3.8	0.4
Average temperature (°C)	1.2	0.1	-0.4	2.7	7.6	13.6	16.5	16.8	15.6	7.6	2.6	-0.8
Average night temperature (°C)	0.1	-1.0	-1.6	1.6	6.6	12.6	15.6	16.0	14.9	6.2	1.3	-2.0
Absolute minimum temperature (°C)	-5.6	-5.5	-7.2	-3.3	2.1	6.7	13.8	14.6	12.9	0.7	-7.6	-8.3

Asterholma monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	7.0	10.0	13.0	15.0	18.0	18.0	18.0	16.0	14.0	11.0	8.0	6.0
Daylight mean duration (h)	6.8	9.1	11.8	14.6	17.2	18.8	18.0	15.6	12.9	10.1	7.5	5.9
Daylight minimum duration (h)	5.0	7.0	10.0	13.0	16.0	18.0	16.0	14.0	11.0	8.0	6.0	5.0
Sunshine mean duration (h)	1.6	3.7	6.0	10.5	13.8	16.2	14.3	9.8	8.3	5.0	1.6	0.5
Precipitation (mm)	68	36	70	19	18	4	60	108	31	156	81	40
Sunny days	10	12	7	18	23	26	15	6	15	3	2	6
Rainy days	17	10	11	12	8	4	16	25	15	27	18	14
Snow days	4	6	13	0	0	0	0	0	0	1	10	11

Asterholma - weather forecast by months

Asterholma weather in january Asterholma weather in february Asterholma weather in march Asterholma weather in april Asterholma weather in may Asterholma weather in june Asterholma weather in july Asterholma weather in august Asterholma weather in september Asterholma weather in october Asterholma weather in november Asterholma weather in december

Best time to visit Asterholma:

The best time to visit Asterholma during the most sunny months:

April — 10.5(h)
May — 13.8(h)
June — 16.2(h)
July — 14.3(h)
August — 9.8(h)

Months with the longest average daylight duration in Asterholma:

May — 17.2(h)
June — 18.8(h)
July — 18.0(h)
August — 15.6(h)

The largest precipitation sum in Asterholma is at

August — 108(mm)

October — 156(mm)

November — 81(mm)

Weather forecast in the closest to Asterholma admin centers