Cool
Average highs are around 19°C, so pack for cooler days.
Weather Guide
Östhammar, Sweden Average Monthly Weather
Weather score29Poor annual avg
Best months: July, June, August
Across the year, average daytime temperatures are around 9°C, sunshine averages 4h per day, and rainfall totals about 497mm. Sea temperatures average 7°C across the year.
Annual weather
Annual averages
Temp
9°C
Rain
497mm
Annual total
Sun
4h
Sea
7°C
Weather score
29
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 66mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.2h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Östhammar, Sweden with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August19°C average high
August is one of Östhammar's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
August66mm average rain
August is one of Östhammar's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to June and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August6.2 hours average sun
August is brighter than Östhammar'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 Östhammar'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
August42 weather score
August scores above Östhammar'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.
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