South Holland (Rotterdam)
September
Weather in South Holland for September 2025
Your guide to South Holland weather in September - trends and predictions
In general, the average temperature in South Holland at the beginning of September is 25.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °C by the end of September.
South Holland in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 103.9 mm.
Temperatures
Rain 🌧️
10
Dry days
20
Rainy days
0
Snow days
21°/14°
Temperatures
18 km/h
Avg max wind
71 %
Avg humidity
South Holland in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  25° | 3  24° | 4  22° | 5 28° | 6 27° | 7 27° |
| 8 26° | 9  24° | 10 24° | 11 20° | 12 19° | 13 18° | 14 19° |
| 15 22° | 16 22° | 17  22° | 18 22° | 19 21° | 20 22° | 21 22° |
| 22 19° | 23 17° | 24 18° | 25 18° | 26 20° | 27 19° | 28 16° |
| 29 17° | 30 17° |
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Temperatures trend during September in South Holland
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 25° /14° | 2.6 mm | 6 | |
| 2 Sept. | Fog | 25° /17° | 3.3 mm | 6 | |
| 3 Sept. | Partly cloudy | 24° /16° | 0.5 mm | 6 | |
| 4 Sept. | Sunny | 22° /15° | 1.1 mm | 6 | |
| 5 Sept. | Sunny | 28° /14° | 0.5 mm | 7 | |
| 6 Sept. | Sunny | 27° /17° | 4.3 mm | 7 | |
| 7 Sept. | Sunny | 27° /16° | 0 mm | 7 | |
| 8 Sept. | Sunny | 26° /16° | 2.4 mm | 6 | |
| 9 Sept. | Cloudy | 24° /17° | 1.7 mm | 5 | |
| 10 Sept. | Sunny | 24° /16° | 3.7 mm | 6 | |
| 11 Sept. | Patchy rain possible | 20° /14° | 6.5 mm | 5 | |
| 12 Sept. | Partly cloudy | 19° /12° | 10.6 mm | 5 | |
| 13 Sept. | Cloudy | 18° /10° | 2 mm | 5 | |
| 14 Sept. | Partly cloudy | 19° /11° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 22° /11° | 0 mm | 5 | |
| 16 Sept. | Partly cloudy | 22° /13° | 0.5 mm | 5 | |
| 17 Sept. | Overcast | 22° /14° | 0 mm | 5 | |
| 18 Sept. | Light rain shower | 22° /15° | 4.8 mm | 6 | |
| 19 Sept. | Patchy rain possible | 21° /14° | 1.7 mm | 5 | |
| 20 Sept. | Patchy rain possible | 22° /13° | 0.2 mm | 6 | |
| 21 Sept. | Light rain shower | 22° /13° | 7.3 mm | 6 | |
| 22 Sept. | Light rain shower | 19° /12° | 4.8 mm | 5 | |
| 23 Sept. | Light rain shower | 17° /12° | 8.1 mm | 4 | |
| 24 Sept. | Sunny | 18° /10° | 0.9 mm | 5 | |
| 25 Sept. | Overcast | 18° /11° | 4 mm | 5 | |
| 26 Sept. | Overcast | 20° /13° | 10.2 mm | 5 | |
| 27 Sept. | Partly cloudy | 19° /13° | 13.4 mm | 5 | |
| 28 Sept. | Patchy rain possible | 16° /12° | 2 mm | 4 | |
| 29 Sept. | Light rain shower | 17° /10° | 0.5 mm | 4 | |
| 30 Sept. | Cloudy | 17° /10° | 6.1 mm | 4 | |
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Important Notice
Our weather forecast for South Holland in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the South Holland forecast closer to your planned date for the most up-to-date weather information.
South Holland in September - FAQ
What are the expected maximum and minimum temperatures in South Holland during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in South Holland during September?
Significant rainfall exceeding 103.9 mm is expected in South Holland during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in South Holland during September?
The average wind speed in South Holland during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in South Holland
Explore the daily rainfall trends and prepare for South Hollands September weather 💧
UV exposure in South Holland during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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