Leiden
September
Weather in Leiden for September 2026
Your guide to Leiden weather in September - trends and predictions
In general, the average temperature in Leiden at the beginning of September is 22.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17 °C by the end of September.
Leiden experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 100.1 mm.
Temperatures
Rain 🌧️
5
Dry days
25
Rainy days
0
Snow days
19°/14°
Temperatures
25 km/h
Avg max wind
71 %
Avg humidity
Leiden Weather September
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Temperatures trend during September in Leiden
See the weather trend as well as the moving average line
September weather in Leiden day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 22° /15° | 1.5 mm | 5 | |
| 2 Sept. |  Mist | 21° /16° | 5.9 mm | 5 | |
| 3 Sept. | Light rain shower | 21° /16° | 1.6 mm | 5 | |
| 4 Sept. |  Sunny | 21° /15° | 0.6 mm | 5 | |
| 5 Sept. | Sunny | 24° /16° | 0.2 mm | 6 | |
| 6 Sept. | Sunny | 25° /16° | 2.9 mm | 6 | |
| 7 Sept. | Sunny | 26° /17° | 0.2 mm | 6 | |
| 8 Sept. | Sunny | 22° /16° | 1 mm | 6 | |
| 9 Sept. | Light rain shower | 20° /16° | 2 mm | 4 | |
| 10 Sept. | Sunny | 22° /15° | 3.2 mm | 6 | |
| 11 Sept. | Light rain shower | 19° /15° | 6.3 mm | 4 | |
| 12 Sept. | Light rain shower | 17° /13° | 9.5 mm | 4 | |
| 13 Sept. | Light rain shower | 16° /12° | 7.5 mm | 4 | |
| 14 Sept. | Patchy rain possible | 17° /13° | 1.1 mm | 4 | |
| 15 Sept. |  Partly cloudy | 20° /14° | 2.1 mm | 5 | |
| 16 Sept. | Light rain shower | 19° /15° | 2.1 mm | 4 | |
| 17 Sept. |  Overcast | 20° /15° | 1.9 mm | 4 | |
| 18 Sept. | Light rain shower | 21° /16° | 3.5 mm | 5 | |
| 19 Sept. | Light rain shower | 22° /15° | 2.6 mm | 5 | |
| 20 Sept. | Patchy rain possible | 21° /15° | 2.2 mm | 5 | |
| 21 Sept. | Light rain shower | 20° /13° | 6.9 mm | 5 | |
| 22 Sept. | Patchy rain possible | 17° /13° | 2.7 mm | 4 | |
| 23 Sept. | Light rain shower | 17° /13° | 5.6 mm | 4 | |
| 24 Sept. | Patchy rain possible | 17° /11° | 0.7 mm | 4 | |
| 25 Sept. | Patchy rain possible | 17° /12° | 4 mm | 4 | |
| 26 Sept. | Overcast | 18° /13° | 7.2 mm | 4 | |
| 27 Sept. | Partly cloudy | 17° /13° | 8.5 mm | 5 | |
| 28 Sept. | Patchy rain possible | 17° /12° | 1.3 mm | 4 | |
| 29 Sept. | Light rain shower | 17° /13° | 0.3 mm | 4 | |
| 30 Sept. |  Cloudy | 16° /11° | 5.1 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Leiden 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 Leiden forecast closer to your planned date for the most up-to-date weather information.
Change Month
Leiden in September - FAQ
What are the expected maximum and minimum temperatures in Leiden during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Leiden during September?
Significant rainfall exceeding 100.1 mm is expected in Leiden during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Leiden during September?
The average wind speed in Leiden during September is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Leiden
Explore the daily rainfall trends and prepare for Leidens September weather 💧
Typically, Leiden has 25 rainy days in September with a total of 100.1 mm of rainfall.
UV exposure in Leiden during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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