Average temperature in September is 27.5 °C
Average daytime temperature is 31.7 °C
Average night temperature is 24.9 °C
Absolute maximum temperature: 33.2 °C
Absolute minimum temperature: 23.6 °C
Number of sunny days:
Number of rainy days: 30
Number of snow days:
Precipitation sum: 415 mm
* Weather data for Phra Nakhon Si Ayutthaya Thailand is based on climate observations for 2023 year
| September (°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 | 32 | 33.1 | 33 | 33.2 | 32.5 | 30.8 | 32.4 | 31 | 33.2 | 31.3 | 31.7 | 31.2 | 31.1 | 31.2 | 32.5 | 31.9 | 31.2 | 31.7 | 31.6 | 32.8 | 33.1 | 32.5 | 32 | 32.8 | 32.4 | 30.1 | 29 | 29.5 | 30.7 | 30.8 |
| Apparent max temperature | 39.5 | 41.4 | 40.6 | 41 | 38 | 36.2 | 38.7 | 36.1 | 39.8 | 36.7 | 37.2 | 35.4 | 34.5 | 37.2 | 38.9 | 37.8 | 37.1 | 37.8 | 38.7 | 39.9 | 41.6 | 39.7 | 41.1 | 41.5 | 41.2 | 36.5 | 35 | 35.4 | 36.3 | 37.5 |
| Mean temperature | 27.5 | 27.7 | 28.3 | 28.1 | 28.6 | 28.1 | 28.1 | 27.5 | 28.1 | 27.9 | 27.7 | 27 | 27.3 | 27.1 | 27.1 | 26.9 | 27 | 26.8 | 28.2 | 28.5 | 27.8 | 28.4 | 27.6 | 28.6 | 28.5 | 26.5 | 25.8 | 25.8 | 26.6 | 26.8 |
| Apparent mean temperature | 30.8 | 29.8 | 31.2 | 30.9 | 30.4 | 30.6 | 31 | 30.3 | 30.8 | 29.7 | 30.3 | 29 | 29.9 | 28.8 | 28.9 | 29.1 | 29.6 | 29.9 | 30.1 | 30.9 | 29.1 | 30.6 | 30.8 | 30.4 | 30.1 | 29.9 | 27.1 | 28.3 | 29.4 | 29.4 |
| Minimum temperature | 25.3 | 24.8 | 25.1 | 25.4 | 25.7 | 25.9 | 25.6 | 25.4 | 25.6 | 25 | 25.2 | 24.4 | 25 | 24.8 | 24.5 | 24.3 | 24.6 | 24.4 | 24.8 | 24.9 | 23.9 | 25.1 | 24.9 | 25 | 24.7 | 24.5 | 23.6 | 24.4 | 24.5 | 24.7 |
| Apparent min temperature | 33.5 | 33.6 | 34.3 | 34 | 33.4 | 33.3 | 33.5 | 33.2 | 33.5 | 32.3 | 32.5 | 31.6 | 32.1 | 31.8 | 31.9 | 31.9 | 32.2 | 32.3 | 34.3 | 34.5 | 34 | 34.6 | 34.1 | 35.2 | 35.1 | 32.3 | 30.6 | 30.2 | 31.4 | 32.3 |
| September | 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) | 12.4 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12 | 12 | 12 |
| Sunshine duration (h) | 5.4 | 9.2 | 10.1 | 7.4 | 9.6 | 4.7 | 4.6 | 6.9 | 9.6 | 6.7 | 6.2 | 6.1 | 7.2 | 8.1 | 7 | 7.7 | 7.4 | 5.2 | 10.2 | 10.5 | 10.3 | 11.1 | 7.5 | 10.3 | 10 | 3.2 | 4.8 | 6.5 | 4.5 | 6.3 |
| Precipitation (mm) | 23.6 | 21.3 | 7.1 | 26.2 | 3.1 | 1.8 | 12.5 | 14.9 | 24 | 11 | 5 | 7.8 | 5.1 | 12.4 | 22.6 | 20.2 | 14.5 | 9 | 0.6 | 2.4 | 15.2 | 0.1 | 9.3 | 1.1 | 2.6 | 23.5 | 45.8 | 30.9 | 13.5 | 28.2 |
| Precipitation hours | 13 | 13 | 10 | 14 | 11 | 9 | 10 | 14 | 15 | 12 | 5 | 11 | 14 | 18 | 14 | 16 | 18 | 13 | 4 | 3 | 11 | 1 | 6 | 2 | 5 | 19 | 21 | 23 | 21 | 19 |
| Wind speed (m/s) | 11.6 | 17.3 | 13.8 | 12.7 | 16.7 | 8.9 | 16.1 | 15 | 23.1 | 17.5 | 15.9 | 16 | 14.4 | 16.2 | 16.7 | 14.1 | 14.6 | 11.9 | 6.2 | 11.2 | 13.3 | 7.5 | 11.3 | 14.3 | 8.7 | 11.6 | 15.1 | 18.9 | 16.2 | 10.1 |
In September 2023, the highest daytime temperature in Phra Nakhon Si Ayutthaya was 33.2°C.
While the minimum temperature at night dropped to 23.6°C.
The average nighttime and daytime temperatures during September in Phra Nakhon Si Ayutthaya are 24.9°C and 31.7°C respectively.
The precipitation sum in September is about 415 mm.