Cool
Average highs are around 18°C, so pack for cooler days.
Weather Guide
Kökar, Finland Average Monthly Weather
Weather score28Poor annual avg
Best months: July, June, August
Across the year, average daytime temperatures are around 8°C, sunshine averages 4h per day, and rainfall totals about 520mm. Sea temperatures average 8°C across the year.
Annual weather
Annual averages
Temp
8°C
Rain
520mm
Annual total
Sun
4h
Sea
8°C
Weather score
28
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 67mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Kökar, Finland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August18°C average high
August is one of Kökar's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August67mm average rain
August is one of Kökar's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to July and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August6.1 hours average sun
August sits close to Kökar's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August17°C average sea
August is one of Kökar's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 16°C in this stretch, so swimming comfort is at its strongest.
Weather score
August42 weather score
August scores above Kökar's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
