Cool
Average highs are around 15°C, so pack for cooler days.
Weather Guide
Harstad, Norway Average Monthly Weather
Weather score20Poor annual avg
Best months: July, June, May
Across the year, average daytime temperatures are around 5°C, sunshine averages 3.4h per day, and rainfall totals about 1029mm. Sea temperatures average 7°C across the year.
Annual weather
Annual averages
Temp
5°C
Rain
1029mm
Annual total
Sun
3.4h
Sea
7°C
Weather score
20
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 67mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.9h per day, enough for a balanced month.
Cool sea
Sea temperatures average 11°C, so the water can feel cool.
Map
Weather map
Compare Harstad, Norway with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July15°C average high
July is one of Harstad's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
July67mm average rain
July sits on the drier side of Harstad's year, which helps with sightseeing and transfers.
Driest monthsMarch to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July6.9 hours average sun
July is brighter than Harstad'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
July11°C average sea
July is one of Harstad's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.
Weather score
July32 weather score
July is one of Harstad's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsMay to August
These months have the strongest weather score in the monthly averages.
