Rotterdam weather in September
Rotterdam in September averages 15°C (60°F), 78 mm of rain and 5 hours of sun a day.
Of the twelve months in Rotterdam, September is the fourth warmest, the sixth wettest and the sixth sunniest.
- Average temp
- 15°C (60°F)
12–19°C · 53–66°F
- Rainfall
- 78 mm
Showers likely
- Sunshine
- 5 h
hours per day
What is Rotterdam like in September?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Rotterdam in September?
A light rain jacket
About 78 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 12°C (53°F).
September compared with August and October
September in Rotterdam is 2.8°C cooler than August and about as wet as it, which averages 18°C (65°F).
September in Rotterdam is 3.5°C warmer than October and about as wet as it, which averages 12°C (53°F).
Daylight in Rotterdam in September
On 15 September the sun is up for 12 hours 39 minutes in Rotterdam, rising about 07:17 and setting about 19:55 local time.
September ends 1 hour 55 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 4 hours 3 minutes short of June, the longest-lit month here.
Where to stay in Rotterdam
Dates are a starting point for September.
Travel guides for Rotterdam
What to read before you book.
Rotterdam weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 4°C / 39°F | 71 mm |
| February | 4°C / 40°F | 63 mm |
| March | 6°C / 44°F | 58 mm |
| April | 10°C / 50°F | 42 mm |
| May | 14°C / 57°F | 59 mm |
| June | 17°C / 62°F | 71 mm |
| July | 19°C / 65°F | 85 mm |
| August | 18°C / 65°F | 84 mm |
| September | 15°C / 60°F | 78 mm |
| October | 12°C / 53°F | 81 mm |
| November | 8°C / 46°F | 80 mm |
| December | 5°C / 42°F | 84 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Rotterdam in September
September climate averages for Rotterdam, 1991–2020.
Rotterdam averages 15°C (60°F) in September, ranging from about 12°C (53°F) at night to 19°C (66°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 78 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 15°C (60°F) against 12°C (53°F) in October — 3.5°C warmer.
September is 2.8°C cooler than August, and about as wet.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 5 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 39 minutes of daylight in mid-September, against 16 hours 42 minutes in June and 7 hours 47 minutes in December.
On 15 September, sunrise is about 07:17 and sunset about 19:55 local time. Both shift across the month — the month ends 1 hour 55 minutes shorter than it starts.
