Cool
Average highs are around 19°C, so pack for cooler days.
Weather Guide
Arendal, Norway Average Monthly Weather
Weather score26Poor 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 1013mm. Sea temperatures average 10°C across the year.
Annual weather
Annual averages
Temp
10°C
Rain
1013mm
Annual total
Sun
4.2h
Sea
10°C
Weather score
26
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 101mm, so some wet days are possible.
Some sun
Sunshine averages 6.6h per day, enough for a balanced month.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Weather map
Compare Arendal, Norway with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August19°C average high
August is one of Arendal's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August101mm average rain
August sits near Arendal's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to June and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August6.6 hours average sun
August is brighter than Arendal's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August18°C average sea
August is one of Arendal'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
August41 weather score
August scores above Arendal'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.
