Average temperature in April is 8.3 °C
Average daytime temperature is 11.7 °C
Average night temperature is 5 °C
Absolute maximum temperature: 16.3 °C
Absolute minimum temperature: -1.3 °C
Number of sunny days: 7
Number of rainy days: 23
Number of snow days:
Precipitation sum: 91 mm
* Weather data for Haarlem Netherlands is based on climate observations for 2023 year
| April (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 10.8 | 9.1 | 8.7 | 9 | 10.6 | 8.1 | 9 | 12.6 | 13.9 | 13.6 | 10.7 | 10.4 | 10.5 | 13.3 | 12.1 | 10 | 13.6 | 13.4 | 12.9 | 10.6 | 15.1 | 13.8 | 15.7 | 9.3 | 8.3 | 9 | 12.4 | 13.6 | 14.2 | 16.3 |
| Apparent max temperature | 8.7 | 4.3 | 3.9 | 6.8 | 8.6 | 5.9 | 5.8 | 11 | 10.8 | 9.6 | 5.8 | 6.3 | 4.9 | 10.3 | 8.4 | 7.4 | 10.5 | 9.7 | 7.8 | 5.8 | 12.7 | 13.3 | 12.2 | 7.6 | 3.3 | 5 | 9.3 | 11.6 | 11.6 | 15 |
| Mean temperature | 8.8 | 5.6 | 4.8 | 4.4 | 4.9 | 6.3 | 8 | 8.4 | 10.5 | 10.1 | 9 | 8.5 | 8 | 8.5 | 8.7 | 8.4 | 9.7 | 9.1 | 9.6 | 8.3 | 10.7 | 8.5 | 11 | 8.3 | 6.6 | 6.3 | 7.5 | 9.7 | 9.9 | 11 |
| Apparent mean temperature | 1.3 | -3.4 | -3.1 | -5.1 | -4.5 | -0.7 | 4.3 | 0.5 | 6.2 | 3.5 | 1.5 | 0.5 | 0.8 | 0.4 | 2.3 | 3.3 | 3.3 | 1 | 2.3 | 1.3 | 4.9 | 2.8 | 4 | 2.4 | 1 | -1.4 | -2.8 | 2.6 | 3.9 | 2.6 |
| Minimum temperature | 6.1 | 2 | 1 | -1.3 | -1.1 | 3.2 | 6.9 | 3.4 | 7.9 | 8.5 | 7.8 | 6.4 | 6.1 | 3.7 | 5.9 | 7 | 6.7 | 5.8 | 6.9 | 6.2 | 7.7 | 5.1 | 6.9 | 6.4 | 5.1 | 2 | 0.8 | 7.1 | 6.1 | 5.1 |
| Apparent min temperature | 5.8 | 0.7 | 0.3 | 1.2 | 2 | 2.6 | 4.9 | 6.3 | 8 | 5.6 | 3.6 | 3.7 | 2.8 | 5.3 | 4.7 | 5.1 | 6.8 | 4.5 | 4.6 | 3.5 | 8.2 | 6.4 | 8.4 | 3.6 | 2.1 | 2.9 | 3.9 | 6.5 | 7.1 | 9.1 |
| April | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 13 | 13 | 13.1 | 13.2 | 13.2 | 13.3 | 13.4 | 13.4 | 13.5 | 13.6 | 13.6 | 13.7 | 13.8 | 13.8 | 13.9 | 14 | 14 | 14.1 | 14.2 | 14.2 | 14.3 | 14.4 | 14.4 | 14.5 | 14.6 | 14.6 | 14.7 | 14.7 | 14.8 | 14.9 |
| Sunshine duration (h) | 0 | 11.7 | 11.8 | 11.8 | 12 | 0 | 0 | 12.1 | 5.9 | 0.3 | 12.5 | 9 | 11 | 12.7 | 10.5 | 0 | 11.8 | 9 | 12.3 | 10 | 7.9 | 6.5 | 7.9 | 7.2 | 13.1 | 7.7 | 11.2 | 3.4 | 12.8 | 13 |
| Precipitation (mm) | 8.9 | 0.7 | 0 | 0 | 0 | 6.2 | 0.3 | 0 | 0.3 | 5.8 | 2.1 | 9.5 | 7.2 | 0.3 | 0 | 2.2 | 0.3 | 0.6 | 0 | 1.1 | 11.6 | 4.1 | 17.9 | 9.5 | 0.8 | 0.1 | 0 | 1.2 | 0.1 | 0.2 |
| Precipitation hours | 17 | 3 | 0 | 0 | 0 | 12 | 3 | 0 | 3 | 8 | 6 | 16 | 11 | 3 | 0 | 10 | 2 | 5 | 0 | 5 | 15 | 7 | 12 | 17 | 7 | 1 | 0 | 3 | 1 | 2 |
| Wind speed (m/s) | 22.8 | 26.9 | 21.4 | 12.3 | 10.1 | 24.6 | 21.9 | 11.3 | 15.8 | 34.3 | 34.7 | 32.7 | 37.9 | 18.7 | 27.7 | 21.8 | 18.7 | 29.3 | 30.2 | 30 | 21.1 | 18.8 | 22.2 | 32.6 | 25.8 | 13.2 | 18.4 | 23.5 | 18 | 13.2 |
In April 2023, the highest daytime temperature in Haarlem was 16.3°C.
While the minimum temperature at night dropped to -1.3°C.
The average nighttime and daytime temperatures during April in Haarlem are 5°C and 11.7°C respectively.
The precipitation sum in April is about 91 mm.