Weather in Rotterdam in September 2024
Average weather
Average temperature in Rotterdam in September
The temperature in September is +68°F on average, with a range between a maximum of +86°F during the day and a minimum of +43°F at night.
The average maximum temperature goes down 33% by the end of the month, compared with the beginning of the month, from +77°F to +63°F.
Is Rotterdam warm or cold in September?
Rotterdam is typically mild in September.
Maximum temperatures go down compared to the previous month from +70°F to +64°F. The minimum temperature also goes down from +57°F to +54°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Rotterdam:
Climate in Rotterdam in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +70°F | +64°F | +57°F | ||||
| Min. temperature | ||||||
| +43°F | +37°F | +27°F | ||||
| Max. temperature | ||||||
| +93°F | +90°F | +77°F | ||||
| Rainfall | ||||||
| 70 mm | 65 mm | 72 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 77% | 81% | 84% | ||||
| Air pressure | ||||||
| 1014 HPa | 1014 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 4 | 4 | 3 | ||||
| Cloudy days | ||||||
| 19 | 18 | 19 | ||||
| Rainy days | ||||||
| 8 | 8 | 9 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +70°F in the day, the average maximum temperature lowers to +64°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 70 mm to 65 mm. Humidity rises from 77% to 81%. Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 4 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Rotterdam is gradually increasing during September, going from 3 m/s to 4 m/s over the course of the month.
Rain
How was the weather last September in Rotterdam?
Climate Change Over the Years
The climate in Rotterdam in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1986 (+60°F) and the highest in 2016 (+73°F). The driest year was 1997 with only 20 mm of rainfall, and the wettest year was 2017 with 233 mm.
FAQ
Is September a good time to visit Rotterdam?
Can you sunbathe in Rotterdam in September?
Is Rotterdam rainy in September?
Is it sunny in Rotterdam in September?
Other cities in Netherlands
Monthly weather in Rotterdam
Source of the data
For this page, we’ve looked at the typical weather in Rotterdam, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.