Temperature
Cold by day, cold at night.
Rotterdam is usually most comfortable in June and September. Typical daytime highs range from 43–71°F across the year. Rain varies by season.
Cold by day, cold at night.
Rain is frequent. About 14 wet days, the highest monthly average.
Sunshine is limited, with cloud often dominating.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 41° and nights feel near 37°.
Mostly cloudy skies this month.
Breezy November days can feel brisker in open spots.
November late afternoons are around 48°F, easing to about 46°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 43 | 35 | 2.5 | 12 | 4.0 | 87 |
| Feb | 45 | 36 | 2.2 | 12 | 5.6 | 84 |
| Mar | 50 | 38 | 2.1 | 11 | 7.7 | 80 |
| Apr | 56 | 42 | 1.9 | 11 | 10.6 | 75 |
| May | 62 | 48 | 2.6 | 12 | 11.4 | 76 |
| Jun | 68 | 54 | 2.6 | 11 | 12.0 | 76 |
| Jul | 71 | 57 | 3.2 | 14 | 12.2 | 77 |
| Aug | 71 | 57 | 3.1 | 13 | 11.1 | 79 |
| Sep | 66 | 53 | 2.6 | 12 | 8.8 | 82 |
| Oct | 58 | 48 | 3.0 | 14 | 6.7 | 85 |
| Nov | 50 | 42 | 2.8 | 14 | 4.5 | 88 |
| Dec | 44 | 37 | 2.8 | 14 | 3.5 | 88 |
Similar climates
Want a side-by-side climate view? Compare Rotterdam with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology