Best year time to visit Illoinen

General weather information about Illoinen

Average annual temperature is 6.3 °C

Absolute maximum temperature: 30.5 °C

Absolute minimum temperature: -17.4 °C

Number of sunny days: 138 days

Number of rainy days: 181 days

Number of snow days: 46 days

Look at detailed online map of Illoinen

* Weather data for Illoinen Finland is based on climate observations for 2026 year

Illoinen air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	4.1	7.2	7.3	16.3	24.8	29.5	24.8	30.5	23.3	15.3	8.4	4.6
Average daytime temperature (°C)	1.0	0.8	1.3	10.3	15.1	22.1	20.5	20.4	17.9	7.5	1.7	-2.4
Average temperature (°C)	-0.9	-1.5	-2.4	4.6	10.1	16.9	16.8	17.0	14.9	4.8	-0.2	-4.3
Average night temperature (°C)	-2.9	-4.5	-6.9	-1.3	3.9	10.2	12.8	13.8	11.4	2.2	-2.5	-6.6
Absolute minimum temperature (°C)	-17.2	-13.2	-17.3	-13.6	-2.8	2.7	10.9	10.8	5.0	-4.8	-11.5	-17.4

Illoinen 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	19.0	18.0	16.0	14.0	11.0	8.0	6.0
Daylight mean duration (h)	6.7	9.1	11.8	14.6	17.3	18.9	18.1	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	17.0	14.0	11.0	8.0	6.0	5.0
Sunshine mean duration (h)	1.4	3.4	5.9	10.9	13.3	15.7	13.5	9.3	8.0	5.2	1.4	0.5
Precipitation (mm)	78	38	86	21	32	42	116	220	60	140	94	36
Sunny days	11	13	12	21	21	17	5	2	10	9	8	9
Rainy days	16	7	8	9	10	13	26	29	20	21	14	8
Snow days	4	8	11	0	0	0	0	0	0	1	8	14

Illoinen - weather forecast by months

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

Best time to visit Illoinen:

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

April — 10.9(h)
May — 13.3(h)
June — 15.7(h)
July — 13.5(h)
August — 9.3(h)

Months with the longest average daylight duration in Illoinen:

May — 17.3(h)
June — 18.9(h)
July — 18.1(h)
August — 15.6(h)

The largest precipitation sum in Illoinen is at

July — 116(mm)

August — 220(mm)

October — 140(mm)

Weather forecast in the closest to Illoinen admin centers