Cool
Average highs are around 20°C, so pack for cooler days.
August verdict
Helsinki, Finland in August
Weather score41Mixed
Mixed for holiday weather
Average highs are around 20°C, so pack for cooler days. Sunshine averages 6.6h per day, enough for a balanced month. Rainfall averages 77mm, which is relatively low for holiday planning.
August weather
Monthly averages
Temp
20°C
Rain
77mm
Sun
6.6h
Sea
17°C
Weather score
41
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 77mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.6h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Helsinki, Finland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August20°C average high
August is one of Helsinki's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
August77mm average rain
August is one of Helsinki's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to June and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August6.6 hours average sun
August is brighter than Helsinki's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August17°C average sea
August is one of Helsinki's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
August41 weather score
August scores above Helsinki'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.
