Netherlands · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Rotterdam are June, July and August, when daytime temperatures are agreeable and rainfall is relatively low.
Rotterdam sees its warmest weather in July, when daytime highs average around 23°C, and its coolest in January (around 6°C).
Annual precipitation totals roughly 882mm — August is typically the wettest month (~92mm) and April the driest (~42mm).
Rainfall is spread fairly evenly through the year, so no single season is dramatically wetter than the rest.
May is the sunniest month, with about 226 hours of sunshine.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 60 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 6° / 1°C | 71mm | 🤔 Fair |
| February | 7° / 1°C | 66mm | 🤔 Fair |
| March | 10° / 3°C | 57mm | 🤔 Fair |
| April | 14° / 5°C | 42mm | 👍 Good |
| May | 18° / 8°C | 56mm | 👍 Good |
| June | 21° / 11°C | 69mm | 🌟 Great |
| July | 23° / 13°C | 79mm | 🌟 Great |
| August | 23° / 13°C | 92mm | 🌟 Great |
| September | 19° / 11°C | 90mm | 👍 Good |
| October | 15° / 8°C | 87mm | 👍 Good |
| November | 10° / 4°C | 88mm | 🤔 Fair |
| December | 7° / 2°C | 86mm | 🤔 Fair |
January in Rotterdam is cold, with average daytime highs around 6°C (44°F) and nighttime lows near 1°C (34°F). Expect roughly 71mm of precipitation spread over about 13 rainy days, with a moderate amount of rain.
☀️ About 70 hours of sunshine over the month (~2h/day).
🎒 What to pack — warm coat · sweaters and layers · scarf
February in Rotterdam is cold, with average daytime highs around 7°C (45°F) and nighttime lows near 1°C (34°F). Expect roughly 66mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
☀️ About 90 hours of sunshine over the month (~3h/day).
🎒 What to pack — warm coat · sweaters and layers · scarf
March in Rotterdam is chilly, with average daytime highs around 10°C (51°F) and nighttime lows near 3°C (37°F). Expect roughly 57mm of precipitation spread over about 10 rainy days, with little rainfall.
☀️ About 143 hours of sunshine over the month (~5h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
April in Rotterdam is mild, with average daytime highs around 14°C (58°F) and nighttime lows near 5°C (41°F). Expect roughly 42mm of precipitation spread over about 9 rainy days, with little rainfall.
☀️ About 193 hours of sunshine over the month (~6h/day).
🎒 What to pack — light jacket · layers for cool evenings
May in Rotterdam is mild, with average daytime highs around 18°C (64°F) and nighttime lows near 8°C (47°F). Expect roughly 56mm of precipitation spread over about 9 rainy days, with little rainfall.
☀️ About 226 hours of sunshine over the month (~8h/day).
🎒 What to pack — light jacket · layers for cool evenings
June in Rotterdam is pleasantly warm, with average daytime highs around 21°C (69°F) and nighttime lows near 11°C (52°F). Expect roughly 69mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.
☀️ About 216 hours of sunshine over the month (~7h/day).
🎒 What to pack — light layers · comfortable walking shoes
July in Rotterdam is pleasantly warm, with average daytime highs around 23°C (73°F) and nighttime lows near 13°C (56°F). Expect roughly 79mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.
☀️ About 221 hours of sunshine over the month (~7h/day).
🎒 What to pack — light layers · comfortable walking shoes
August in Rotterdam is pleasantly warm, with average daytime highs around 23°C (73°F) and nighttime lows near 13°C (56°F). Expect roughly 92mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
☀️ About 203 hours of sunshine over the month (~7h/day).
🎒 What to pack — light layers · comfortable walking shoes
September in Rotterdam is pleasantly warm, with average daytime highs around 19°C (67°F) and nighttime lows near 11°C (51°F). Expect roughly 90mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
☀️ About 153 hours of sunshine over the month (~5h/day).
🎒 What to pack — light layers · comfortable walking shoes
October in Rotterdam is mild, with average daytime highs around 15°C (59°F) and nighttime lows near 8°C (46°F). Expect roughly 87mm of precipitation spread over about 13 rainy days, with a moderate amount of rain.
☀️ About 115 hours of sunshine over the month (~4h/day).
🎒 What to pack — light jacket · layers for cool evenings
November in Rotterdam is chilly, with average daytime highs around 10°C (50°F) and nighttime lows near 4°C (40°F). Expect roughly 88mm of precipitation spread over about 14 rainy days, with a moderate amount of rain.
☀️ About 67 hours of sunshine over the month (~2h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
December in Rotterdam is cold, with average daytime highs around 7°C (45°F) and nighttime lows near 2°C (35°F). Expect roughly 86mm of precipitation spread over about 14 rainy days, with a moderate amount of rain.
☀️ About 56 hours of sunshine over the month (~2h/day).
🎒 What to pack — warm coat · sweaters and layers · scarf