Cool
Average highs are around 13°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 13°C, so pack for cooler days. Sunshine averages 7.8h per day, enough for a balanced month. Rainfall averages 35mm, which is relatively low for holiday planning.
Monthly averages
Temp
13°C
Rain
35mm
Sun
7.8h
Sea
3°C
Weather score
35
Poor
Cool
Average highs are around 13°C, so pack for cooler days.
Drier
Rainfall averages 35mm, 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 3°C, so the water can feel cool.
Map
Compare Kalajoki, Finland with nearby places by weather score, rain, sun, temperature, and swim conditions.
May13°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.
May35mm average rain
May sits on the drier side of Kalajoki'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.
May7.8 hours average sun
May is brighter than Kalajoki'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.
May3°C average sea
May is below Kalajoki's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 14°C in this stretch, so swimming comfort is at its strongest.
May35 weather score
May sits close to Kalajoki'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.