Cool
Average highs are around 12°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 12°C, so pack for cooler days. Sunshine averages 7.4h per day, enough for a balanced month. Rainfall averages 43mm, which is relatively low for holiday planning.
Monthly averages
Temp
12°C
Rain
43mm
Sun
7.4h
Sea
5°C
Weather score
34
Poor
Cool
Average highs are around 12°C, so pack for cooler days.
Drier
Rainfall averages 43mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 5°C, so the water can feel cool.
Map
Compare Härnösand, Sweden with nearby places by weather score, rain, sun, temperature, and swim conditions.
May12°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.
May43mm average rain
May is one of Härnösand's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to July, October, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May7.4 hours average sun
May is brighter than Härnösand'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.
May5°C average sea
May is below Härnösand'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.
May34 weather score
May sits close to Härnösand's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.