Alkmaar
September
Weather in Alkmaar for September 2026
Your guide to Alkmaar weather in September - trends and predictions
In general, the average temperature in Alkmaar at the beginning of September is 24 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °C by the end of September.
Alkmaar in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 271.7 mm.
Temperatures
Rain 🌧️
12
Dry days
18
Rainy days
0
Snow days
23°/11°
Temperatures
21 km/h
Avg max wind
74 %
Avg humidity
Alkmaar Weather September
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Temperatures trend during September in Alkmaar
See the weather trend as well as the moving average line
September weather in Alkmaar day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 23° /14° | 0.3 mm | 6 | |
| 2 Sept. | Light rain shower | 23° /15° | 6.3 mm | 5 | |
| 3 Sept. | Light rain shower | 22° /15° | 1.5 mm | 5 | |
| 4 Sept. |  Sunny | 22° /14° | 0.8 mm | 5 | |
| 5 Sept. | Sunny | 25° /14° | 0.1 mm | 6 | |
| 6 Sept. | Sunny | 26° /15° | 0.7 mm | 7 | |
| 7 Sept. | Sunny | 27° /16° | 0.3 mm | 6 | |
| 8 Sept. | Sunny | 24° /15° | 0.8 mm | 6 | |
| 9 Sept. |  Overcast | 21° /15° | 1.8 mm | 5 | |
| 10 Sept. | Sunny | 23° /13° | 3.1 mm | 5 | |
| 11 Sept. | Light rain shower | 19° /13° | 6.8 mm | 4 | |
| 12 Sept. | Light rain shower | 18° /12° | 8 mm | 4 | |
| 13 Sept. | Light rain shower | 16° /10° | 5.1 mm | 4 | |
| 14 Sept. | Sunny | 18° /10° | 1.1 mm | 5 | |
| 15 Sept. |  Cloudy | 20° /12° | 2 mm | 5 | |
| 16 Sept. | Overcast | 19° /13° | 2.5 mm | 4 | |
| 17 Sept. | Cloudy | 19° /13° | 1.6 mm | 4 | |
| 18 Sept. | Light rain shower | 21° /15° | 3.4 mm | 5 | |
| 19 Sept. | Light rain shower | 22° /14° | 2.9 mm | 5 | |
| 20 Sept. | Patchy rain possible | 23° /15° | 2.4 mm | 5 | |
| 21 Sept. | Light rain shower | 20° /12° | 6.1 mm | 5 | |
| 22 Sept. | Light rain shower | 18° /11° | 1.7 mm | 4 | |
| 23 Sept. | Light rain shower | 17° /11° | 5.2 mm | 4 | |
| 24 Sept. |  Partly cloudy | 17° /9° | 0.5 mm | 4 | |
| 25 Sept. | Overcast | 17° /11° | 3.1 mm | 4 | |
| 26 Sept. | Overcast | 18° /11° | 5.5 mm | 4 | |
| 27 Sept. | Cloudy | 18° /11° | 10 mm | 4 | |
| 28 Sept. | Patchy rain possible | 17° /11° | 0.8 mm | 4 | |
| 29 Sept. | Light rain shower | 17° /11° | 0.7 mm | 4 | |
| 30 Sept. | Cloudy | 17° /10° | 5.4 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Alkmaar 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 Alkmaar forecast closer to your planned date for the most up-to-date weather information.
Change Month
Alkmaar in September - FAQ
What are the expected maximum and minimum temperatures in Alkmaar during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Alkmaar during September?
Significant rainfall exceeding 271.7 mm is expected in Alkmaar during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Alkmaar during September?
The average wind speed in Alkmaar during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Alkmaar
Explore the daily rainfall trends and prepare for Alkmaars September weather 💧
UV exposure in Alkmaar during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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