Mild
Average highs are around 20°C, so days are mild rather than hot.
Weather Guide
Tanum, Sweden Average Monthly Weather
Weather score28Poor annual avg
Best months: July, June, August
Across the year, average daytime temperatures are around 10°C, sunshine averages 4.2h per day, and rainfall totals about 765mm. Sea temperatures average 10°C across the year.
Annual weather
Annual averages
Temp
10°C
Rain
765mm
Annual total
Sun
4.2h
Sea
10°C
Weather score
28
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 65mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.2h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Weather map
Compare Tanum, Sweden with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July20°C average high
July is one of Tanum's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
July65mm average rain
July sits near Tanum's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to July and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July8.2 hours average sun
July is one of Tanum'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
July18°C average sea
July is one of Tanum's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to September
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
July50 weather score
July is one of Tanum'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.