- Best Months
- May–Sep
- Climate Type
- Temperate maritime (Cfb Köppen classification)
Updated July 2026 · Sources cited: climatestotravel.com, en.climate-data.org
Good to know
Good to Know
- Best time to visit is late April through September, when daylight is longest and temperatures most comfortable
- Plan for rain any month; lightweight waterproof jacket essential year-round
- Summers rarely exceed 25°C (77°F); heat waves (5+ days >25°C (77°F)) are occasional but becoming more common
- Winter sees limited daylight hours and frequent cloud cover; expect grey, wet days November–February
- Snow is rare (avg. 7 days/year) but possible; roads typically clear quickly if it falls
Snowfall
- Annual Snow Mm
- 36
- Annual Snow Days
- 7.4
- Annual Snow Inches
- 1.42
- Note
- Rare but occasional; can freeze canals/rivers during intense cold waves
Months With Snow
- January
- February
- March
- November
- December
Best Months
Best Months
- May
- June
- July
- August
- September
Climate Type
Temperate maritime (Cfb Köppen classification)
Worst Months
Worst Months
- November
- December
- January
- February
Rainfall Pattern
Relatively evenly distributed year-round; October–November are wettest (around 84–90 mm); April is driest (around 9–10 mm)
Annual Rainfall Mm
850
Key Characteristics
Key Characteristics
- Rainy throughout year with short showers and drizzle common
- Limited sunshine November–February; best sunshine May–August
- Summers mild and changeable, not very warm
- Frequent freezing at night even in summer months
- High humidity year-round (73–85%)
Annual Rainfall Inches
33.5
Off Season Temperature
- Month
- January
- Low Celsius
- 2
- High Celsius
- 6
- Low Fahrenheit
- 36
- High Fahrenheit
- 43
Peak Season Temperature
- Month
- July
- Low Celsius
- 14
- High Celsius
- 22
- Low Fahrenheit
- 57
- High Fahrenheit
- 72
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Rotterdam
Data last updated July 2026 · Verify anything important.