Best year time to visit Onsala

General weather information about Onsala

Average annual temperature is 8.7 °C

Absolute maximum temperature: 26.7 °C

Absolute minimum temperature: -10.5 °C

Number of sunny days: 117 days

Number of rainy days: 233 days

Number of snow days: 15 days

Look at detailed online map of Onsala

* Weather data for Onsala Sweden is based on climate observations for 2026 year

Onsala air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	7.2	8.7	10.7	17.5	23.2	26.7	24.0	24.6	22.9	16.4	10.9	8.3
Average daytime temperature (°C)	4.3	4.7	4.5	11.0	16.0	21.2	18.1	18.3	18.6	11.0	4.8	2.6
Average temperature (°C)	2.7	2.3	2.0	6.8	12.0	17.2	15.6	16.0	16.2	9.0	2.9	1.1
Average night temperature (°C)	1.1	-0.3	-0.9	2.6	7.4	12.6	13.2	13.6	13.8	6.8	0.9	-0.7
Absolute minimum temperature (°C)	-6.0	-10.5	-8.0	-3.1	0.8	6.3	9.8	10.8	9.1	0.9	-9.5	-8.3

Onsala monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	8.0	10.0	13.0	15.0	17.0	17.0	17.0	16.0	13.0	11.0	9.0	7.0
Daylight mean duration (h)	7.4	9.5	11.8	14.3	16.6	17.9	17.2	15.2	12.8	10.3	8.1	6.7
Daylight minimum duration (h)	6.0	8.0	10.0	13.0	15.0	17.0	16.0	14.0	11.0	9.0	7.0	6.0
Sunshine mean duration (h)	1.8	4.4	5.4	10.1	13.5	14.3	11.9	7.8	7.8	5.0	2.2	1.3
Precipitation (mm)	147	73	162	24	23	37	236	209	80	140	76	95
Sunny days	5	15	6	16	21	18	3	1	10	7	8	7
Rainy days	26	13	17	14	10	12	28	30	20	24	19	20
Snow days	0	0	8	0	0	0	0	0	0	0	3	4

Onsala - weather forecast by months

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

Best time to visit Onsala:

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

April — 10.1(h)
May — 13.5(h)
June — 14.3(h)
July — 11.9(h)

Months with the longest average daylight duration in Onsala:

May — 16.6(h)
June — 17.9(h)
July — 17.2(h)

The largest precipitation sum in Onsala is at

January — 147(mm)

March — 162(mm)

July — 236(mm)

August — 209(mm)

October — 140(mm)

Weather forecast in the closest to Onsala admin centers