Cool
Average highs are around 15°C, so pack for cooler days.
September verdict
Sarpsborg, Norway in September
Weather score22Poor
Poor for holiday weather
Average highs are around 15°C, so pack for cooler days. Sunshine averages 4.4h per day, so this is not one of the brighter months. Rainfall averages 92mm, so some wet days are possible.
September weather
Monthly averages
Temp
15°C
Rain
92mm
Sun
4.4h
Sea
16°C
Weather score
22
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 92mm, so some wet days are possible.
Limited sun
Sunshine averages 4.4h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Sarpsborg, Norway with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September15°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
September92mm average rain
September is wetter than Sarpsborg's yearly average, so flexible plans matter more.
Driest monthsJanuary to June and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September4.4 hours average sun
September sits close to Sarpsborg's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September16°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJune to September
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
September22 weather score
September scores below Sarpsborg's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
