Average temperature in May is 23.8 °C
Average daytime temperature is 29.6 °C
Average night temperature is 16.5 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: 8.7 °C
Number of sunny days: 24
Number of rainy days: 7
Number of snow days:
Precipitation sum: 6 mm
* Weather data for Tehran Iran 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 | 25.8 | 23.6 | 25.4 | 20.7 | 23.8 | 26.8 | 30.3 | 32.8 | 30.7 | 24.9 | 28.5 | 30.7 | 32.4 | 28.4 | 26.1 | 23.2 | 24.8 | 30.4 | 32.6 | 33 | 30.3 | 30.2 | 32.7 | 34.3 | 35.5 | 30.4 | 33.1 | 32.5 | 34.7 | 36.8 | 33.1 |
| Apparent max temperature | 22.5 | 21.3 | 22.1 | 17.1 | 19.7 | 23.8 | 27.6 | 27.7 | 28.1 | 24.7 | 26.8 | 28.3 | 28.5 | 25.3 | 22.7 | 19.9 | 20.9 | 26.3 | 30.5 | 29.4 | 28.7 | 27.9 | 28.3 | 32.3 | 31.4 | 28.6 | 29.6 | 30.8 | 32.1 | 34.2 | 32 |
| Mean temperature | 19.4 | 18.7 | 19.4 | 14.8 | 17.5 | 21.1 | 24.2 | 26.6 | 24 | 19.9 | 22.4 | 24.8 | 27 | 23.1 | 18.6 | 16.8 | 19.2 | 23.8 | 26.4 | 27.3 | 24.2 | 24.5 | 26.4 | 28.4 | 30 | 26.7 | 26.8 | 27.5 | 29.5 | 30.8 | 27.2 |
| Apparent mean temperature | 11.1 | 9.4 | 9 | 6 | 5 | 8.1 | 10.5 | 14.4 | 13.9 | 12.4 | 11 | 12.7 | 14.8 | 12.5 | 7.3 | 6.9 | 8.3 | 10.9 | 13.9 | 17 | 17 | 15 | 14.3 | 14.1 | 20.8 | 21.1 | 18.5 | 17.6 | 18.4 | 19.8 | 19.7 |
| Minimum temperature | 14.1 | 12.2 | 12.5 | 8.7 | 8.7 | 12.7 | 15.3 | 19.5 | 17.4 | 14.5 | 13.5 | 17 | 19.4 | 14.5 | 10.1 | 9.8 | 11.5 | 15 | 18.4 | 20.8 | 18.4 | 17.3 | 18.3 | 17.7 | 24.1 | 23 | 20.8 | 19.9 | 21.6 | 23.3 | 21.2 |
| Apparent min temperature | 15.7 | 15.4 | 15.7 | 11.3 | 13.6 | 17.1 | 20.3 | 22.1 | 20 | 17.7 | 19.6 | 21.1 | 22.8 | 19 | 15.5 | 13.5 | 15.7 | 19.6 | 23 | 23.6 | 22.2 | 22.1 | 22.3 | 25.1 | 26 | 24.2 | 23.7 | 25.1 | 26.6 | 27.4 | 25.4 |
| 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) | 13.6 | 13.7 | 13.7 | 13.7 | 13.8 | 13.8 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 14 | 14 | 14 | 14 | 14.1 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 |
| Sunshine duration (h) | 9.2 | 12.8 | 12.8 | 12.9 | 12.9 | 12.9 | 12.9 | 10.4 | 7.9 | 8.8 | 12.4 | 12.9 | 12.6 | 12.1 | 12.9 | 13 | 13 | 13 | 12.7 | 11.7 | 11.6 | 13 | 13 | 13 | 12.3 | 12.5 | 13 | 13 | 12 | 12 | 8.4 |
| Precipitation (mm) | 2.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.3 | 0.7 | 0 | 0 | 0 | 0 | 0.3 | 0 | 0 | 0 | 0 | 0 | 0.7 | 0 | 0 | 0 | 0 | 0.8 | 0 | 0 | 0 | 0 | 0.1 |
| Precipitation hours | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| Wind speed (m/s) | 32.1 | 14 | 19.7 | 23.1 | 20.3 | 15.9 | 16.2 | 21.3 | 28.2 | 25.8 | 15.6 | 17.7 | 26.9 | 30 | 21.4 | 23.7 | 16.3 | 25.1 | 23.5 | 31.7 | 19.5 | 27.8 | 26.7 | 17.5 | 36 | 19.7 | 25.3 | 15 | 17.8 | 38.2 | 24.1 |
In May 2023, the highest daytime temperature in Tehran was 36.8°C.
While the minimum temperature at night dropped to 8.7°C.
The average nighttime and daytime temperatures during May in Tehran are 16.5°C and 29.6°C respectively.
The precipitation sum in May is about 6 mm.