Rotterdam weather by month & the best time to visit
🇳🇱 Netherlands · city break · oceanic / maritime climate
The best time to visit Rotterdam is July — its sunniest month (Sunshine Score 74/100), with August and June close behind. Rotterdam averages about 1,668 hours of sunshine a year. Daytime highs around 21°C / 70°F and roughly 78 mm of rain in July.
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- Sun hours / year
- 1,668
- Sunniest month
- July
- Peak score
- 74/100
- Rain / year
- 834 mm
- Midday UV at peak
- 5 (moderate)
- Sea at warmest
- 20°C / 68°F
- Population
- 1M
- Elevation
- Sea level
When is the best time to visit Rotterdam?
For sunshine, the best time to visit Rotterdam is July, then August and June. The dullest month is January (0/100, 77 mm of rain). The full month-by-month picture is in the table below.
How sunny is Rotterdam?
Rotterdam isn't a sunny place by world standards: about 1,668 hours of sunshine a year. 74 Sunshine Score points separate July (74) from January (0), so the month you pick matters. Rotterdam is the sunniest of the 5 destinations tracked in Netherlands. The year's 834 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 6° / 43°F | 2° / 36°F | 77 mm | 0 | 6° / 43°F |
| February | 0 | 6° / 43°F | 2° / 36°F | 66 mm | 1 | 7° / 45°F |
| March | 7 | 9° / 48°F | 3° / 37°F | 55 mm | 2 | 8° / 46°F |
| April | 34 | 13° / 55°F | 6° / 43°F | 38 mm | 3 | 10° / 50°F |
| May | 52 | 16° / 61°F | 9° / 48°F | 56 mm | 4 | 14° / 57°F |
| June | 70 | 19° / 66°F | 13° / 55°F | 62 mm | 5 | 18° / 64°F |
| July | 74 | 21° / 70°F | 15° / 59°F | 78 mm | 5 | 19° / 66°F |
| August | 72 | 21° / 70°F | 15° / 59°F | 87 mm | 4 | 20° / 68°F |
| September | 69 | 19° / 66°F | 13° / 55°F | 70 mm | 3 | 19° / 66°F |
| October | 43 | 15° / 59°F | 10° / 50°F | 79 mm | 2 | 16° / 61°F |
| November | 12 | 10° / 50°F | 6° / 43°F | 81 mm | 1 | 11° / 52°F |
| December | 0 | 7° / 45°F | 3° / 37°F | 85 mm | 0 | 8° / 46°F |
Sea temperature in Rotterdam by month
The sea off Rotterdam is warmest in August at around 20°C / 68°F, and coolest in January at 6°C / 43°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Rotterdam on the interactive sunshine globe →
Nearby places for sunshine
- Amsterdam Netherlands · 45 km · best in Jul · 1,629 h sun/yr
- Eindhoven Netherlands · 86 km · best in Sep · 1,665 h sun/yr
- Brussels Belgium · 117 km · best in Sep · 1,609 h sun/yr
- Weeze Germany · 124 km · best in Sep · 1,580 h sun/yr
- Ostend Belgium · 137 km · best in Jun · 1,769 h sun/yr
- Düsseldorf Germany · 177 km · best in Sep · 1,578 h sun/yr
Nearest destinations
- Antwerp Belgium · 85 km · 1,664 h sun/yr · best in Sep
Head-to-head
How Rotterdam compares month by month: Rotterdam vs Brussels · Rotterdam vs Amsterdam · Rotterdam vs Eindhoven · Rotterdam vs Ostend · all comparisons
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