Rotterdam weather in September (Zuid-Holland, Netherlands)

You can expect very pleasant temperatures during the day in September. The average maximum daytime temperature in Rotterdam in September lies at 19.3°C (66.74°F). The average minimum temperature goes down to around 10.1°C (50.18°F) (often the minimum temperature is noted at night).

Rainfall during September is moderate with an average of 72mm (2.8 inches). There are generally around 14 rainy days. The sun will show itself now and again, with 154 hours of sunshine during the entire month.


Rotterdam, monthly averages in September

Show in Fahrenheit
Min Temperature 10 °C  
Max Temperature 19 °C  
Chance of Rain 49%  
Precipitation 71mm  
Rainy days 15 days  
Humidity 84% *  
Sunshine 154 hrs *  
Percentage Sunshine 34% *  

Where to stay in Rotterdam

Where to go in the Netherlands in September

Find out more about the weather in the Netherlands in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So what to wear in September? Bring a rain jacket in case it rains during your stay. Plan on layering your clothes, as some days or part of the day it can be nice and warm, while other times it can get quite chilly. At night it tends to cool off so best to pack some warm nightwear as well.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Outdoor sports

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Rotterdam.

Our site offers climate and forecast data for every country in the world. Are you going to the Netherlands? On this website you can find historical weather averages for many cities in the Netherlands. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.