Best year time to visit Koski

General weather information about Koski

Average annual temperature is 5.7 °C

Absolute maximum temperature: 30.6 °C

Absolute minimum temperature: -17.3 °C

Number of sunny days: 142 days

Number of rainy days: 167 days

Number of snow days: 56 days

Look at detailed online map of Koski

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

Koski air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	3.8	6.0	5.0	16.2	22.8	29.5	24.1	30.6	23.6	14.2	6.8	5.2
Average daytime temperature (°C)	0.0	0.1	0.6	10.1	15.1	20.9	20.1	20.2	18.0	6.2	0.3	-3.1
Average temperature (°C)	-1.7	-2.4	-3.0	4.2	10.1	16.3	16.2	16.8	14.5	3.7	-1.4	-5.0
Average night temperature (°C)	-3.5	-5.8	-7.4	-1.1	4.5	10.9	12.3	13.5	11.2	1.6	-3.6	-7.5
Absolute minimum temperature (°C)	-13.1	-15.7	-17.3	-10.7	-2.7	3.2	10.2	10.8	6.2	-6.0	-15.3	-15.7

Koski 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	16.0	18.0	19.0	19.0	17.0	14.0	11.0	8.0	6.0
Daylight mean duration (h)	6.5	9.0	11.8	14.8	17.6	19.3	18.4	15.8	12.9	10.0	7.2	5.5
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)	1.1	3.0	5.5	10.7	12.8	15.1	12.2	8.8	7.6	4.6	0.8	0.3
Precipitation (mm)	79	29	91	33	38	21	164	132	107	95	87	25
Sunny days	10	15	9	23	19	16	5	5	6	12	9	13
Rainy days	11	1	11	7	11	14	26	26	24	18	14	4
Snow days	10	12	11	0	1	0	0	0	0	1	7	14

Koski - weather forecast by months

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

Best time to visit Koski:

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

April — 10.7(h)
May — 12.8(h)
June — 15.1(h)
July — 12.2(h)
August — 8.8(h)

Months with the longest average daylight duration in Koski:

May — 17.6(h)
June — 19.3(h)
July — 18.4(h)
August — 15.8(h)

The largest precipitation sum in Koski is at

July — 164(mm)

August — 132(mm)

September — 107(mm)

October — 95(mm)

Weather forecast in the closest to Koski admin centers