Mild
Average highs are around 21°C, so days are mild rather than hot.
Weather Guide
Best months: July, June, August
Across the year, average daytime temperatures are around 10°C, sunshine averages 4.3h per day, and rainfall totals about 820mm. Sea temperatures average 10°C across the year.
Annual averages
Temp
10°C
Rain
820mm
Annual total
Sun
4.3h
Sea
10°C
Weather score
27
Poor avg
Mild
Average highs are around 21°C, so days are mild rather than hot.
Drier
Rainfall averages 76mm, 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
Compare Sarpsborg, Norway with nearby places by weather score, rain, sun, temperature, and swim conditions.
July21°C average high
July is one of Sarpsborg's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
July76mm average rain
July sits near Sarpsborg's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to June and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
July8.2 hours average sun
July is one of Sarpsborg'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.
July18°C average sea
July is one of Sarpsborg'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.
July48 weather score
July is one of Sarpsborg'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.