Average temperature in April is 6 °C
Average daytime temperature is 10.7 °C
Average night temperature is 1.2 °C
Absolute maximum temperature: 19.4 °C
Absolute minimum temperature: -3.8 °C
Number of sunny days: 18
Number of rainy days: 11
Number of snow days: 1
Precipitation sum: 33 mm
* Weather data for Harku Estonia 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 | 2.9 | 2.5 | 2 | 1.8 | 4.9 | 11.7 | 13.7 | 9.1 | 9.1 | 11.6 | 15.9 | 17.8 | 9.4 | 11.3 | 11.8 | 11.7 | 11.7 | 9.9 | 9.5 | 13.6 | 14.8 | 14.7 | 17.9 | 14.4 | 19.4 | 13.8 | 9.5 | 9.4 | 10.3 | 5.8 |
| Apparent max temperature | -1.9 | -3.1 | -4.3 | -3.1 | 1.8 | 8.5 | 10.4 | 6.4 | 5.3 | 8 | 13.2 | 15.4 | 5.6 | 7.2 | 7.1 | 8.8 | 8.3 | 5 | 4.3 | 10.4 | 12.3 | 13.2 | 14.2 | 12.4 | 15.7 | 11.6 | 5.2 | 6.1 | 6.5 | 2.1 |
| Mean temperature | 0.1 | 0 | -0.8 | -0.5 | 2.4 | 5.7 | 5.5 | 3.2 | 4 | 4.9 | 9.2 | 10.7 | 7.7 | 6.2 | 6.3 | 6 | 6.5 | 5.3 | 5.6 | 7.4 | 8.3 | 8.4 | 11.4 | 10.2 | 13.3 | 8.7 | 5.2 | 4 | 6.1 | 4.1 |
| Apparent mean temperature | -7.9 | -7.3 | -7.9 | -8.2 | -4.8 | -1.7 | -4.7 | -6.4 | -5.5 | -5.9 | -0.6 | 0.5 | 1.1 | -2.1 | -2.7 | -4.2 | -2.9 | -2.6 | -2.6 | -3.8 | 0.4 | -0.7 | -0.2 | 2.3 | 4.9 | 3.8 | -3.1 | -3.7 | -2.2 | -2.5 |
| Minimum temperature | -2.5 | -2.6 | -3 | -3.8 | -0.3 | 1.7 | -1.2 | -2.7 | -1.7 | -1.9 | 3.5 | 3.6 | 6.2 | 2.5 | 2.2 | 0 | 0.6 | 1.1 | 2.1 | 0 | 3.3 | 2.4 | 3.3 | 4.9 | 6.9 | 6 | 0.3 | 0 | 1.3 | 0.9 |
| Apparent min temperature | -5.2 | -5.2 | -6.2 | -5.1 | -1.3 | 2.4 | 2 | -0.2 | 0.4 | 1.3 | 6.3 | 8.1 | 3.3 | 1.6 | 1.7 | 2.4 | 3.1 | 1 | 1 | 4 | 5.5 | 5.8 | 8 | 7.4 | 10.5 | 6.5 | 1.9 | 0.5 | 1.9 | -0.3 |
| 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) | 13.3 | 13.3 | 13.4 | 13.5 | 13.6 | 13.7 | 13.8 | 13.9 | 14 | 14 | 14.1 | 14.2 | 14.3 | 14.4 | 14.5 | 14.6 | 14.7 | 14.7 | 14.8 | 14.9 | 15 | 15.1 | 15.2 | 15.3 | 15.4 | 15.4 | 15.5 | 15.6 | 15.7 | 15.8 |
| Sunshine duration (h) | 11.9 | 12 | 12.1 | 11.7 | 0 | 10.2 | 12.4 | 12.5 | 12.6 | 12.7 | 12.8 | 11.5 | 0.5 | 12.9 | 11.4 | 11.6 | 13 | 11.3 | 13.3 | 13.3 | 13 | 13.5 | 13.6 | 11.9 | 13.7 | 7.6 | 8.1 | 13 | 10.7 | 6.4 |
| Precipitation (mm) | 0 | 0 | 0 | 0.3 | 4 | 0.4 | 0 | 0 | 0 | 0 | 0.2 | 1.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.8 | 2.8 | 6.9 | 0.1 | 5 | 5.7 | 4.2 |
| Precipitation hours | 0 | 0 | 0 | 3 | 14 | 2 | 0 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 3 | 9 | 1 | 9 | 10 | 17 |
| Wind speed (m/s) | 20.9 | 20.6 | 21.9 | 15.5 | 15.6 | 17.3 | 12.9 | 10.5 | 12.3 | 10.2 | 12.2 | 15.5 | 22.2 | 20.1 | 15.9 | 14.6 | 10.4 | 17.1 | 19.1 | 12.2 | 12.9 | 10 | 20.2 | 21.5 | 20.9 | 11.3 | 13.5 | 17 | 25.1 | 25.2 |
In April 2023, the highest daytime temperature in Harku was 19.4°C.
While the minimum temperature at night dropped to -3.8°C.
The average nighttime and daytime temperatures during April in Harku are 1.2°C and 10.7°C respectively.
The precipitation sum in April is about 33 mm.