Weather in Leiden for September 2026
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Until now, September 2026 in Leiden is cooler than usual, with temperatures averaging 19.5 °C, this is 2.2 °C below the typical seasonal average.
Expect cooler weather in the next days in Leiden with the forecast suggesting a temperature of 19.6 °C, lower than the historical average.
In general, the average temperature in Leiden at the beginning of September is 22.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.3 °C by the end of September.
The climate of Leiden in September is notably wet, with an average of 13 rainy days, and a total of 100.1 mm of precipitation.
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Leiden Weather September
Temperatures trend during September in Leiden
September weather in Leiden day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 21° /15° | 1.1 mm | 5 | |
| 2 Sept. |  Mist | 21° /16° | 5.2 mm | 4 | |
| 3 Sept. | Light rain shower | 21° /16° | 2.1 mm | 4 | |
| 4 Sept. |  Sunny | 21° /16° | 1.3 mm | 4 | |
| 5 Sept. | Patchy rain possible | 23° /16° | 0.3 mm | 5 | |
| 6 Sept. | Sunny | 24° /15° | 2.2 mm | 5 | |
| 7 Sept. | Sunny | 26° /17° | 0.2 mm | 5 | |
| 8 Sept. | Patchy rain possible | 22° /16° | 10.3 mm | 5 | |
| 9 Sept. | Light rain shower | 19° /15° | 3.8 mm | 4 | |
| 10 Sept. | Sunny | 21° /14° | 2.4 mm | 5 | |
| 11 Sept. | Light rain shower | 19° /15° | 6.9 mm | 3 | |
| 12 Sept. | Light rain shower | 18° /13° | 8.7 mm | 4 | |
| 13 Sept. | Patchy rain possible | 20° /16° | 3.1 mm | 2.5 | |
| 14 Sept. | Sunny | 22° /14° | 0 mm | 4.1 | |
| 15 Sept. |  Overcast | 21° /18° | 3 mm | 3.9 | |
| 16 Sept. | Patchy rain possible | 18° /15° | 3.6 mm | 2.4 | |
| 17 Sept. | Patchy rain possible | 17° /15° | 9.1 mm | 4 | |
| 18 Sept. | Patchy rain possible | 17° /15° | 1.4 mm | 4 | |
| 19 Sept. | Patchy rain possible | 18° /15° | 2 mm | 4 | |
| 20 Sept. | Overcast | 17° /15° | 0.1 mm | 4 | |
| 21 Sept. | Sunny | 19° /16° | 0.1 mm | 5 | |
| 22 Sept. | Sunny | 19° /13° | 0 mm | 5 | |
| 23 Sept. | Overcast | 18° /16° | 0 mm | 5 | |
| 24 Sept. | Sunny | 22° /14° | 0 mm | 6 | |
| 25 Sept. | Sunny | 21° /17° | 0 mm | 6 | |
| 26 Sept. | Overcast | 25° /16° | 0 mm | 6 | |
| 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 | |
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Leiden in September - FAQ
What are the expected maximum and minimum temperatures in Leiden during September?
How much rainfall should be expected in Leiden during September?
What are the typical wind conditions in Leiden during September?
September rainfall patterns in Leiden
UV exposure in Leiden during September
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