Cool
Average highs are around 20°C, so pack for cooler days.
Weather Guide
Karlsöarna, Sweden Average Monthly Weather
Weather score30Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 10°C, sunshine averages 4.3h per day, and rainfall totals about 471mm. Sea temperatures average 9°C across the year.
Annual weather
Annual averages
Temp
10°C
Rain
471mm
Annual total
Sun
4.3h
Sea
9°C
Weather score
30
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 47mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Karlsöarna, Sweden with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July20°C average high
July is one of Karlsöarna's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
July47mm average rain
July is close to Karlsöarna's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
July8 hours average sun
July is one of Karlsöarna's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July17°C average sea
July is one of Karlsöarna's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
July52 weather score
July is one of Karlsöarna'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.
Hotels near Karlsöarna, Sweden
Marriott
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