The climate in Zaanstad during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Zaanstad and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 18°C (65°F), whilst at night 10°C (51°F) is normal.
Daytime temperature | 18.1°C 64.5°F |
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Nightly temperature | 10.4°C 50.6°F |
Average temperature | 14.2°C 57.6°F |
Daily sunshine | 5 hrs |
Avg rainfall | 78 mm 3.1 ins |
Rainy days | 16 days |
Sea temperature | 17.4°C 63.3°F |
Humidity | 83% |
Windspeed | 16.2kph 10 mph |
On average September is the 4th wettest month of the year in Zaanstad with around 78mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Zaanstad in September 2025.
Best places to visit in September
Hottest month: | August | 20.5°C 68.9°F |
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Driest month: | February | 45mm 1.8ins |
Sunniest month: | May | 7.5hrs |
Coldest month: | January | 4.6°C 40.3°F |
Wettest month: | November | 91mm 3.6ins |