Climate averages 1991–2020

Delft weather
in December.

A cold, moderately wet month: the 11th warmest and the 10th driest of the year.

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

Average high 6.6°C Daytime mean, December
Average low 2.9°C Night-time mean, December
Rainfall 75 mm 14 days with ≥1 mm
Daylight 8 h Sunrise to sunset, per day
Every month in Delft · average highYear overview

December is a cold month in Delft: daytime highs average 6.6°C and nights cool to about 2.9°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 75 mm of rain on roughly 14 days, which makes December a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 7 h 51 min on an average December day.

The nearest other city in this atlas is The Hague (9 km away). In December its highs average 6.8°C, about as warm as Delft, with 75 mm of rain.

Among the 44 cities listed in the Netherlands, Delft ranks joint 5th of 44 for the warmest December highs and joint 32nd of 44 for the driest December (rainfall, lowest first). The mean December high of those 44 cities is 6.2°C; Delft is 0.4°C warmer than that mean.

From December to January, average highs fall by 0.6°C to 6.0°C, and monthly rainfall falls from 75 mm to 64 mm.

The annual picture

December 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 rainfall

Average total · mm
Average monthly rainfall 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

Delft climate table

1991–2020
Monthly climate averages for Delft, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 6.0°C2.1°C2.1°C6412.48.38 h
February 6.7°C1.9°C1.9°C5211.49.910 h
March 9.5°C3.5°C3.5°C5111.311.812 h
April 13.1°C5.9°C5.9°C4410.213.914 h
May 16.4°C9.4°C9.4°C5711.215.616 h
June 19.0°C12.3°C12.3°C5811.116.617 h
July 21.1°C14.7°C14.7°C7312.816.216 h
August 21.2°C14.8°C14.8°C7913.014.715 h
September 18.3°C12.5°C12.5°C7412.212.713 h
October 14.3°C9.2°C9.2°C7713.410.711 h
November 9.8°C5.7°C5.7°C7214.08.99 h
December, selected 6.6°C2.9°C2.9°C7514.17.88 h

Rainfall is the average of the 30 separate monthly totals. A rain 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

December in nearby cities

Distance from Delft

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 Delft) is explained once on the Delft year overview and on the Sources, method and limits page.

The Hague and Vlaardingen lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.