Cool
Average highs are around 14°C, so pack for cooler days.
May verdict
Southern Ostrobothnia, Finland in May
Weather score33Poor
Poor for holiday weather
Average highs are around 14°C, so pack for cooler days. Sunshine averages 7h per day, enough for a balanced month. Rainfall averages 34mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
14°C
Rain
34mm
Sun
7h
Sea
4°C
Weather score
33
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 34mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7h per day, enough for a balanced month.
Cool sea
Sea temperatures average 4°C, so the water can feel cool.
Map
Weather map
Compare Southern Ostrobothnia, Finland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May14°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
May34mm average rain
May sits on the drier side of Southern Ostrobothnia's year, which helps with sightseeing and transfers.
Driest monthsJanuary to June and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May7 hours average sun
May is brighter than Southern Ostrobothnia'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
May4°C average sea
May is below Southern Ostrobothnia's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
May33 weather score
May sits close to Southern Ostrobothnia's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to July
These months have the strongest weather score in the monthly averages.
