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.
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.
Nearest destinations
Head-to-head
How Rotterdam compares month by month: Rotterdam vs Brussels · Rotterdam vs Amsterdam · Rotterdam vs Eindhoven · Rotterdam vs Ostend · all comparisons
Rotterdam: questions and answers
What kind of destination is Rotterdam?
Rotterdam is a city break in Netherlands with a oceanic / maritime climate — the sea reaches 20°C at its warmest.
How many hours of sunshine does Rotterdam get a year?
Rotterdam gets about 1,668 hours of sunshine a year, at its best around July.
When is the best time to visit Rotterdam?
The sunniest time to visit Rotterdam is July, when the Sunshine Score peaks at 74/100 (with August and June close behind). Expect daytime highs around 21°C / 70°F.
What is the least sunny month in Rotterdam?
January is the least sunny month in Rotterdam, scoring 0/100 with about 77 mm of rain.
Is Rotterdam the sunniest place in Netherlands?
Yes — with about 1,668 hours of sunshine a year, Rotterdam has the most annual sunshine of the 5 Netherlands destinations tracked by Sunshine Atlas.
What is the sea temperature in Rotterdam?
The sea in Rotterdam ranges from about 6°C (January) to 20°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Rotterdam?
The typical midday UV index in Rotterdam peaks around 5 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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