Best time to visit Rotterdam
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Rotterdam
6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Rotterdam).
- 1
Delft and Windmills Small Group Tour from Rotterdam Cruise Port - 2
Efteling Theme Park Entrance Ticket - 3
Rotterdam Bike Tour - all the Highlights - 4
Best Intro Tour of Rotterdam with a Local - 5
Private Customizable Day Trip of The Netherlands from Rotterdam - 6
Keukenhof Day Trip from Rotterdam Cruise Terminal & City Center
Last refreshed 2026-06-18.
Similar climatesDelft98% · Amsterdam98% · The Hague97%
Other destinations with the most-alike year-round climate to Rotterdam (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Rotterdam's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 3–7 | 3 | 13 | 166 | 12.8 | 83% | 25 | 89 | 1 | Quiet | 4 |
| Feb | 4–9 | 5 | 14 | 164 | 11.7 | 79% | 28 | 103 | 1 | Quiet | 4 |
| Mar | 4–11 | 7 | 13 | 159 | 12.2 | 69% | 23 | 173 | 2 | Quiet | 5 |
| Apr | 5–13 | 10 | 11 | 141 | 12.8 | 62% | 22 | 222 | 3 | Quiet | 6 |
| May | 9–18 | 15 | 13 | 154 | 11.8 | 64% | 21 | 271 | 4 | Quiet | 7 |
| Jun | 13–21 | 20 | 12 | 132 | 11.0 | 62% | 20 | 272 | 5 | Quiet | 8 |
| Jul | 14–22 | 21 | 16 | 196 | 12.3 | 66% | 21 | 264 | 5 | Quiet | 7 |
| Aug | 15–23 | 23 | 14 | 159 | 11.4 | 65% | 20 | 264 | 5 | Peak | 7 |
| Sep | 13–20 | 20 | 10 | 138 | 13.8 | 70% | 19 | 209 | 3 | Busy | 7 |
| Oct | 10–16 | 14 | 17 | 185 | 10.9 | 79% | 23 | 137 | 2 | Moderate | 5 |
| Nov | 6–11 | 8 | 16 | 179 | 11.2 | 83% | 22 | 95 | 1 | Peak | 4 |
| Dec | 4–8 | 4 | 15 | 198 | 13.2 | 87% | 23 | 63 | — | Moderate | 3 |
UV Index in Rotterdam by Month
UV index in Rotterdam peaks at 5 (moderate) in June, dropping to 0 (low) in December.
Best months in detail
June
8/1013–21°C (feels 20°C) · 12 rain days (132h) · 272 sun hours · 62% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
September
7/1013–20°C · 10 rain days (138h) · 209 sun hours · 70% humidity · Busy crowd · UV 3 (moderate)
August
7/1015–23°C · 14 rain days (159h) · 264 sun hours · 65% humidity · Peak crowd · UV 5 (moderate)
Every month
Show the other 9 months in detail
January
4/103–7°C (feels 3°C) · 13 rain days (166h) · 89 sun hours · 83% humidity · Quiet crowd · UV 1 (low)
February
4/104–9°C (feels 5°C) · 14 rain days (164h) · 103 sun hours · 79% humidity · Quiet crowd · UV 1 (low)
March
5/104–11°C (feels 7°C) · 13 rain days (159h) · 173 sun hours · 69% humidity · Quiet crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
April
6/105–13°C (feels 10°C) · 11 rain days (141h) · 222 sun hours · 62% humidity · Quiet crowd · UV 3 (moderate)
May
7/109–18°C (feels 15°C) · 13 rain days (154h) · 271 sun hours · 64% humidity · Quiet crowd · UV 4 (moderate)
July
7/1014–22°C · 16 rain days (196h) · 264 sun hours · 66% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
October
5/1010–16°C (feels 14°C) · 17 rain days (185h) · 137 sun hours · 79% humidity · Moderate crowd · UV 2 (low)
November
4/106–11°C (feels 8°C) · 16 rain days (179h) · 95 sun hours · 83% humidity · Peak crowd · UV 1 (low)
December
3/104–8°C (feels 4°C) · 15 rain days (198h) · 63 sun hours · 87% humidity · Moderate crowd
Frequently asked questions about visiting Rotterdam
When is the best time to visit Rotterdam?
June is the highest-scoring month (8/10 on the Holiday Climate Index). Typical conditions: 13–21°C (12 rainy days). The top three months by score are June, September, August.
What is the worst time to visit Rotterdam?
December is the lowest-scoring month (3/10). Typical conditions: 4–8°C (15 rainy days).
When are crowds lowest in Rotterdam?
Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Rotterdam have good weather but fewer tourists?
June (climate 8/10, crowd index 9) and May (climate 7/10, crowd index 5) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Rotterdam by month?
UV peaks at 5 (moderate) in June and is lowest in December at 0 (low). Monthly peak values: Jan 1, Feb 1, Mar 2, Apr 3, May 4, Jun 5, Jul 5, Aug 5, Sep 3, Oct 2, Nov 1, Dec —.
What is the UV index in Rotterdam in June?
June is the peak UV month in Rotterdam, with a daily-peak UV index of 5 (moderate). Standard sun protection — sunglasses and light SPF — is recommended.
How high can UV get in Rotterdam on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 5 (moderate), but the top 10% of days reach UV 7 (high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, June, July. Plan sun protection for the worst case, not the average.
Is air quality in Rotterdam bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 9 months: January, February, March, April, May, August, September, November, December. The worst month is March with a typical-day mean of 14 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 27 µg/m³ (unhealthy) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.