Weather in Rotterdam

Live weather and 7-day forecast for Rotterdam, Netherlands, followed by what to expect in each month of the year.

Sunrise 08:19 Sunset 18:36 Daylight 10h 17m Sun times →

Climate in Rotterdam: month by month

Averaged over 2023–2025, the warmest month in Rotterdam is August, with highs around 23 °C (73 °F) and lows around 15 °C (59 °F); the coolest is January, with highs around 7 °C (44 °F) and lows around 2 °C (36 °F).

Rotterdam gets about 1,001 mm (39 in) of precipitation a year. The wettest month is July (115 mm over about 19 days) and the driest is June (50 mm).

Month	Avg high	Avg low	Precipitation (mm)	Wet days	Daylight
January	7°	2°	101	16	8h 16m
February	9°	3°	59	11	9h 57m
March	11°	4°	67	15	11h 48m
April	14°	7°	74	14	13h 52m
May	19°	10°	85	12	15h 39m
June	22°	13°	50	10	16h 41m
July	22°	15°	115	19	16h 16m
August	23°	15°	68	12	14h 41m
September	21°	13°	84	12	12h 43m
October	16°	10°	114	16	10h 44m
November	10°	6°	108	16	8h 51m
December	9°	4°	76	13	7h 48m

Averages of daily values from the ERA5 reanalysis for 2023–2025 at Rotterdam's coordinates (model elevation 2 m), via Open-Meteo (CC BY 4.0). Three recent years are not a 30-year climate normal; reanalysis smooths local extremes and tends to count more light-rain days than a rain gauge would. Daylight is sunrise to sunset on the 15th of each month.

Weather questions for Rotterdam

What is the hottest month in Rotterdam?

August, with average highs of 23 °C (73 °F) and lows of 15 °C (59 °F) over 2023–2025. The coolest month is January, averaging 7 °C (44 °F) by day and 2 °C (36 °F) at night.

What is the rainiest month in Rotterdam?

July, with about 115 mm of precipitation on roughly 19 days. The driest month is June (50 mm), and the yearly total is around 1,001 mm.

When is the weather mildest in Rotterdam?

Going by the averages, May–September are the months with average daytime highs between 18 °C and 27 °C (64–81 °F) — warm but not hot. July is the month most likely to bring rain.

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About this forecast

The live forecast comes from Open-Meteo, which blends models from national weather services and is fetched fresh in your browser on each visit. Times in the hourly outlook are Rotterdam local time (Europe/Amsterdam).