Month guide · Rotterdam · Netherlands
Rotterdam in September
What September is really like in Rotterdam: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Johannes Schwartz, CC BY 2.0
Quick answer
September is one of the best months to visit Rotterdam. Expect average highs of 19°C (66°F), lows of 11°C (52°F), about 11 rainy days and roughly 12.6 hours of daylight. Pleasant early autumn and the port's open days draw big crowds to the riverfront.
Key facts
- Average high / low
- 19°C (66°F) / 11°C (52°F)
- Rainy days
- About 11
- Daylight
- About 12.6 hours
- Sea temperature
- 17°C (63°F)
- Crowds
- Moderate
- Hotel prices
- Average
Weather in September
September is the 4th-warmest month in Rotterdam: days average 19°C (66°F) against a yearly average high of 14°C (57°F), and nights fall to about 11°C (52°F). Rain falls on roughly 11 of its 30 days. Compared with August (23°C (73°F)), September is cooler; by October highs drop to around 15°C (59°F).
- Sunrise (15 September)
- About 07:17
- Sunset (15 September)
- About 19:58
- Daylight
- About 12.6 hours
- Sea
- 17°C (63°F)
Autumn (September–November). World Port Days in September, then wetter, windier weather and cultural seasons.
Crowds and prices
On a 1–5 scale, September rates 3 for crowds (the peak is June at 4) and 3 for hotel prices (highest in June). Prices sit in the middle of the year's range.
Events in September
- World Port Days (Wereldhavendagen) — port open days and demonstrations (usually early September)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Museum · Centrum
Maritime Museum Rotterdam
The indoor play zone is a good rainy-day option with children.
- Time needed
- 2 hours
- Cost
- Mid-priced
- Kids
- History
- Rainy day
Religious site · Centrum
Laurenskerk
St.
- Time needed
- 45 minutes
- Cost
- Low cost
- History
- Architecture
- Rainy day
Architecture · Centrum
Cube Houses and Oude Haven
Visit the Kijk-Kubus to see how residents furnish rooms with sloping walls, then have a drink by the Oude Haven.
- Time needed
- 1 hour
- Cost
- Low cost
- Iconic
- Architecture
- Photo spot
- Kids
Landmark · Kop van Zuid and Wilhelminapier
Erasmus Bridge
Ben van Berkel's cable-stayed bridge, opened in 1996, crosses the Nieuwe Maas with a white, angled pylon about 139 metres tall that earned it the nickname 'the Swan'.
- Time needed
- 30 minutes
- Cost
- Free
- Iconic
- Free
- Views
- Photo spot
- After dark
What to pack
For highs near 19°C, lows near 11°C and 11 wet days: layers, a warm sweater and a jacket for cool evenings; a packable rain jacket for showers; comfortable walking shoes.
Is September a good time to visit Rotterdam?
One of the best months to visit Rotterdam, with a notable event on the calendar. The other best months are May–August. Compare every month.
Rotterdam in other months
Questions travellers ask
+Is September a good time to visit Rotterdam?
It is one of the best months to visit Rotterdam. Pleasant early autumn and the port's open days draw big crowds to the riverfront.
+How warm is Rotterdam in September?
Average highs are around 19°C (66°F) and lows around 11°C (52°F).
+Does it rain a lot in Rotterdam in September?
Expect rain on about 11 days of the month.