2026 Climate Averages

Rotterdam: Weather Guide & Climate

Complete month-by-month weather guide: Rotterdam. Best time to visit: May, June, July, August, September. Plan your trip with detailed climate data.

Climate Overview

Rotterdam has a moderate climate with average yearly highs of 15°C, lows of 8°C, and approximately 13 rainy days per month.

The best time to visit Rotterdam is during May, June, July, August, September, when conditions are perfect for sightseeing and exploration

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Air Quality

Best Time

May, Jun, Jul, Aug, Sep

Conditions Excellent

Hottest

25°C August
Avg Low 16°
Rain 17d

Coldest

3°C March
Avg High 10°
Rain 10d

Driest Month

4 days April
Avg High 16°
Avg Low

Forecast for your trip dates

Up to 16 days ahead
Best months: May, Jun, Jul, Aug, SepHottest: Aug (25°C) • Driest: Apr (4d rain)
Monthly weather data
Month High Low Rainy days Condition
January 8°C 4°C 11 Good
February 9°C 5°C 18 Wet
March 10°C 3°C 10 Good
April 16°C 6°C 4 Good
May 18°C 8°C 4 Excellent (best)
June 21°C 13°C 15 Excellent (best)
July 20°C 13°C 16 Excellent (best)
August 25°C 16°C 17 Excellent (best)
September 20°C 12°C 10 Excellent (best)
October 14°C 9°C 21 Wet
November 12°C 6°C 12 Good
December 8°C 3°C 15 Wet

Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025

Weather by Season

Winter

Dec–Feb

High: 8°C

Low: 4°C

Rainy days: 15 days/month

Spring

Mar–May

High: 15°C

Low: 6°C

Rainy days: 6 days/month

Summer

Jun–Aug

High: 22°C

Low: 14°C

Rainy days: 16 days/month

Autumn

Sep–Nov

High: 15°C

Low: 9°C

Rainy days: 14 days/month

Month-by-Month Weather Table

Rotterdam

Cutting-edge architecture with Cube Houses and Markthal food market,Europe's largest port, and vibrant food scene.

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Common Questions

What type of climate does Rotterdam have?

Rotterdam has a Moderate climate with average yearly temperatures of 15°C (highs) and 8°C (lows).

When is the best time to visit Rotterdam?

The best time to visit Rotterdam is during May, June, July, August, September, when temperatures average around 18°C and conditions are ideal for sightseeing.

What are the hottest and coldest months in Rotterdam?

The hottest month in Rotterdam is August with average highs of 25°C, while the coldest is March with average lows of 3°C.

When is the rainy season in Rotterdam?

Rotterdam sees the most rain in October (21 rainy days), while April is the driest month (4 rainy days).

More Rotterdam Guides

Best Time to Visit

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Things to Do

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Itineraries

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Overview

Complete travel guide for Rotterdam: top things to do, itineraries, and typical costs.

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