Climate averages 1991–2020

Fredrikstad weather
in May.

A cool, moderately wet month: the 5th warmest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 14.7°C Daytime mean, May
Average low 7.6°C Night-time mean, May
Rainfall 61 mm 10 days with ≥1 mm
Daylight 17 h Sunrise to sunset, per day
Every month in Fredrikstad · average highYear overview

May is a cool month in Fredrikstad: daytime highs average 14.7°C and nights cool to about 7.6°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 61 mm of rain on roughly 10 days, which makes May a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 56 min on an average May day.

The nearest other city in this atlas is Drammen (71 km away). In May its highs average 15.7°C, 1.0°C warmer than Fredrikstad, with 76 mm of rain.

Among the 8 cities listed in Norway, Fredrikstad ranks 4th of 8 for the warmest May highs and 1st of 8 for the driest May (rainfall, lowest first). The mean May high of those 8 cities is 13.9°C; Fredrikstad is 0.8°C warmer than that mean.

From May to June, average highs rise by 3.6°C to 18.3°C, and monthly rainfall rises from 61 mm to 78 mm.

The annual picture

May in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -50510152025 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly precipitation

Average total · mm
Average monthly precipitation totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Fredrikstad climate table

1991–2020
Monthly climate averages for Fredrikstad, 1991–2020
MonthAverage highHigh / lowAverage lowPrecipitation mm/monthWet days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 1.0°C-2.8°C-2.8°C6510.77.07 h
February 1.4°C-3.0°C-3.0°C518.69.29 h
March 4.7°C-0.8°C-0.8°C458.111.812 h
April 9.7°C2.9°C2.9°C478.514.414 h
May, selected 14.7°C7.6°C7.6°C6110.316.917 h
June 18.3°C11.8°C11.8°C7811.218.418 h
July 20.5°C14.4°C14.4°C7711.517.818 h
August 19.7°C14.1°C14.1°C8612.415.516 h
September 15.6°C10.6°C10.6°C8110.512.913 h
October 10.0°C6.0°C6.0°C8711.610.310 h
November 5.3°C2.2°C2.2°C8111.97.88 h
December 2.2°C-1.4°C-1.4°C7011.46.36 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

May in nearby cities

Distance from Fredrikstad

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Fredrikstad) is explained once on the Fredrikstad year overview and on the Sources, method and limits page.