Climate averages 1991–2020
Alkmaar weather
in August.
A mild, moderately wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Alkmaar: daytime highs average 19.9°C and nights cool to about 15.7°C. By daytime temperature it is the warmest month of the year.
Expect about 84 mm of rain on roughly 13 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 43 min on an average August day.
The nearest other city in this atlas is Purmerend (20 km away). In August its highs average 20.8°C, 0.9°C warmer than Alkmaar, with 79 mm of rain.
Among the 44 cities listed in the Netherlands, Alkmaar ranks 44th of 44 for the warmest August highs and joint 35th of 44 for the driest August (rainfall, lowest first). The mean August high of those 44 cities is 21.5°C; Alkmaar is 1.7°C cooler than that mean.
From August to September, average highs fall by 2.4°C to 17.4°C, and monthly rainfall falls from 84 mm to 82 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Alkmaar climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.9°C2.9°C | 2.9°C | 68 | 13.4 | 8.28 h |
| February | 6.0°C2.7°C | 2.7°C | 53 | 10.9 | 9.810 h |
| March | 8.2°C4.2°C | 4.2°C | 49 | 10.5 | 11.812 h |
| April | 11.4°C6.6°C | 6.6°C | 37 | 8.8 | 13.914 h |
| May | 14.6°C10.0°C | 10.0°C | 50 | 9.6 | 15.716 h |
| June | 17.2°C12.9°C | 12.9°C | 55 | 10.3 | 16.817 h |
| July | 19.5°C15.3°C | 15.3°C | 67 | 11.8 | 16.316 h |
| August, selected | 19.9°C15.7°C | 15.7°C | 84 | 12.8 | 14.715 h |
| September | 17.4°C13.7°C | 13.7°C | 82 | 12.6 | 12.713 h |
| October | 13.8°C10.4°C | 10.4°C | 91 | 14.4 | 10.711 h |
| November | 9.8°C6.8°C | 6.8°C | 79 | 15.5 | 8.89 h |
| December | 6.9°C4.0°C | 4.0°C | 79 | 14.5 | 7.78 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Purmerend in AugustThe Netherlands · 20 kmHigh 20.8°C · Low 14.9°C · 79 mm rain
- Zaanstad in AugustThe Netherlands · 20 kmHigh 20.4°C · Low 15.3°C · 90 mm rain
- Zaandam in AugustThe Netherlands · 22 kmHigh 20.6°C · Low 15.2°C · 90 mm rain
- Haarlem in AugustThe Netherlands · 29 kmHigh 20.3°C · Low 15.4°C · 90 mm rain
- Amsterdam in AugustThe Netherlands · 30 kmHigh 20.8°C · Low 14.8°C · 81 mm rain
- Hoofddorp in AugustThe Netherlands · 37 kmHigh 20.7°C · Low 15.2°C · 90 mm rain
- Amstelveen in AugustThe Netherlands · 38 kmHigh 21.1°C · Low 14.7°C · 90 mm rain
- Almere Stad in AugustThe Netherlands · 43 kmHigh 21.5°C · Low 14.5°C · 81 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Alkmaar) is explained once on the Alkmaar year overview and on the Sources, method and limits page.