Cool
Average highs are around 20°C, so pack for cooler days.
Weather Guide
Hanko, Finland Average Monthly Weather
Weather score29Poor annual avg
Best months: July, June, August
Across the year, average daytime temperatures are around 8°C, sunshine averages 4.1h per day, and rainfall totals about 539mm. Sea temperatures average 8°C across the year.
Annual weather
Annual averages
Temp
8°C
Rain
539mm
Annual total
Sun
4.1h
Sea
8°C
Weather score
29
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 58mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Hanko, Finland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July20°C average high
July is one of Hanko's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
July58mm average rain
July is wetter than Hanko's yearly average, so flexible plans matter more.
Driest monthsJanuary to June and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July7.8 hours average sun
July is brighter than Hanko'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
July16°C average sea
July is one of Hanko'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
July49 weather score
July is one of Hanko's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
