Rotterdam Climate by Month
Rotterdam, South Holland, The Netherlands
Mild summers and cool winters, with rain spread through the year.
Mild summers and cool winters, with rain spread through the year: that's Rotterdam's climate in short. Expect highs of 73°F (23°C) in August and 44°F (7°C) in January, with the coldest nights (February) near 35°F (2°C). It gets 36 in (916 mm) of rain a year, spread across the months. The air is humid, averaging 81% relative humidity.
- Warmest month
- 73°F(23°C)
- Average high, August
- Coldest nights
- 35°F(2°C)
- Average low, February
- Rain per year
- 36 in(916 mm)
- No clear rainy season
- Humidity
- 81%
- Sunniest: June
Best and worst months in Rotterdam
Best for weatherJune to August are the best time for weather in Rotterdam: highs near 72°F (22°C) and about 3.3 in (83 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 45°F (7°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Rotterdam weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 44°F(7°C) | 35°F(2°C) | 2.9 in(74 mm) | 85% | 0.7 |
| FebFebruary | 45°F(7°C) | 35°F(2°C) | 2.6 in(66 mm) | 84% | 1.3 |
| MarMarch | 51°F(10°C) | 38°F(3°C) | 2.4 in(61 mm) | 81% | 2.4 |
| AprApril | 58°F(15°C) | 41°F(5°C) | 1.7 in(44 mm) | 75% | 4.0 |
| MayMay | 65°F(18°C) | 47°F(8°C) | 2.0 in(52 mm) | 72% | 4.9 |
| JunJuneBest | 69°F(21°C) | 52°F(11°C) | 2.8 in(72 mm) | 77% | 5.2 |
| JulJulyBest | 73°F(23°C) | 56°F(14°C) | 3.6 in(91 mm) | 77% | 5.0 |
| AugAugustBest | 73°F(23°C) | 56°F(13°C) | 3.4 in(86 mm) | 78% | 4.3 |
| SepSeptember | 67°F(20°C) | 52°F(11°C) | 3.3 in(85 mm) | 81% | 3.0 |
| OctOctober | 59°F(15°C) | 46°F(8°C) | 3.9 in(99 mm) | 88% | 1.8 |
| NovNovember | 51°F(11°C) | 40°F(5°C) | 3.6 in(92 mm) | 86% | 0.8 |
| DecDecember | 45°F(7°C) | 36°F(2°C) | 3.7 in(94 mm) | 93% | 0.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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