Average temperature in May is 22 °C
Average daytime temperature is 22.6 °C
Average night temperature is 21.2 °C
Absolute maximum temperature: 23.4 °C
Absolute minimum temperature: 19.5 °C
Number of sunny days: 7
Number of rainy days: 24
Number of snow days:
Precipitation sum: 22 mm
* Weather data for Jamestown Saint Helena is based on climate observations for 2023 year
| May (°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 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 23.2 | 23.3 | 23.4 | 23 | 22.8 | 22.9 | 22.7 | 23.2 | 23 | 23 | 23.2 | 22.8 | 22.8 | 22.3 | 22.4 | 22.6 | 22.6 | 23 | 22.6 | 22.3 | 22.2 | 21.7 | 22.3 | 22 | 22.3 | 22.5 | 21.9 | 21.8 | 22.2 | 22.1 | 22.4 |
| Apparent max temperature | 23.5 | 23 | 23.5 | 21.7 | 23.4 | 21.9 | 22.8 | 24.8 | 24.8 | 24.5 | 23.9 | 22.4 | 21.8 | 20.9 | 20.3 | 20.9 | 20.3 | 21.3 | 20.8 | 21.3 | 21.6 | 20.7 | 22 | 21.9 | 21 | 20.8 | 21.4 | 20.1 | 19.1 | 20.1 | 20.1 |
| Mean temperature | 22.7 | 22.7 | 23 | 22.7 | 22.6 | 22.5 | 22 | 22.8 | 22.8 | 22.4 | 22.8 | 22.5 | 22.2 | 22 | 21.7 | 21.9 | 21.3 | 22 | 21.9 | 21.8 | 21.7 | 21.3 | 21.2 | 21.6 | 21.6 | 21.4 | 21.3 | 21.3 | 21.3 | 21.4 | 20.8 |
| Apparent mean temperature | 21.9 | 21.2 | 21.5 | 20.4 | 20.2 | 20 | 20.2 | 21.1 | 23 | 22.4 | 21.5 | 20 | 19.5 | 18.9 | 18.6 | 19 | 18.2 | 18.7 | 19.7 | 20.1 | 19.9 | 19.9 | 19.5 | 20.6 | 19.1 | 18.8 | 19 | 17.8 | 16 | 17.5 | 18.6 |
| Minimum temperature | 22.3 | 22.2 | 22.6 | 22.5 | 22.2 | 22 | 21.4 | 22.3 | 22.3 | 22 | 22.2 | 22.3 | 21.8 | 21.6 | 20.5 | 20.4 | 19.8 | 20.4 | 21 | 21.5 | 21 | 20.6 | 19.6 | 21.1 | 20.9 | 20.6 | 20.9 | 20 | 19.7 | 20.9 | 19.5 |
| Apparent min temperature | 22.6 | 22.2 | 22 | 21.2 | 21.2 | 20.7 | 21.1 | 22.8 | 23.9 | 23.1 | 22.4 | 20.9 | 20.4 | 19.8 | 19.4 | 19.9 | 19.1 | 19.8 | 20.2 | 20.8 | 20.4 | 20.3 | 20.8 | 21.1 | 19.7 | 19.5 | 19.9 | 18.7 | 17.3 | 18.6 | 19.3 |
| May | 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 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.2 |
| Sunshine duration (h) | 10.7 | 10.5 | 10.7 | 10.1 | 10.2 | 10.7 | 10.3 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.6 | 10.6 | 8.9 | 10.6 | 7.8 | 9.6 | 10.6 | 10.6 | 10.6 | 10.6 | 6.7 | 10.5 | 10.5 | 8.5 | 10.5 | 10.2 | 9.5 | 8.5 | 9.3 |
| Precipitation (mm) | 0.4 | 0.8 | 0.3 | 0 | 0.5 | 0 | 1.2 | 0 | 0 | 0 | 0 | 0.1 | 1.2 | 1.1 | 1.4 | 0.5 | 0.8 | 0.8 | 1.6 | 0 | 0.3 | 0.5 | 1.1 | 0.3 | 0.4 | 3.9 | 0.5 | 0.1 | 1.2 | 0.2 | 2.9 |
| Precipitation hours | 4 | 5 | 3 | 0 | 4 | 0 | 9 | 0 | 0 | 0 | 0 | 1 | 6 | 8 | 8 | 5 | 7 | 4 | 9 | 0 | 3 | 5 | 7 | 3 | 4 | 16 | 5 | 1 | 6 | 2 | 11 |
| Wind speed (m/s) | 29.8 | 35.4 | 36.1 | 41.9 | 40.1 | 35.5 | 27.4 | 25.8 | 17.1 | 19.2 | 26.8 | 38.7 | 40.1 | 40.8 | 39.5 | 34.5 | 37.7 | 34.6 | 35.5 | 30.8 | 29.5 | 30 | 26.4 | 25 | 37 | 39.7 | 32.9 | 41.7 | 45 | 36.3 | 31.7 |
In May 2023, the highest daytime temperature in Jamestown was 23.4°C.
While the minimum temperature at night dropped to 19.5°C.
The average nighttime and daytime temperatures during May in Jamestown are 21.2°C and 22.6°C respectively.
The precipitation sum in May is about 22 mm.