Average annual temperature is 24.3 °C
Absolute maximum temperature: 40.7 °C
Absolute minimum temperature: 8.5 °C
Number of sunny days: 94 days
Number of rainy days: 271 days
Look at detailed online map of Dieciocho de Septiembre
* Weather data for Dieciocho de Septiembre Bolivia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 34.8 | 32.8 | 32.4 | 31.3 | 29.4 | 28.5 | 29.7 | 32.0 | 34.8 | 40.7 | 36.9 | 34.0 |
| Average daytime temperature (°C) | 29.8 | 29.2 | 29.8 | 28.4 | 26.2 | 25.0 | 25.4 | 28.9 | 30.0 | 32.5 | 31.8 | 31.4 |
| Average temperature (°C) | 25.1 | 24.5 | 25.1 | 24.1 | 22.4 | 20.6 | 21.5 | 23.5 | 25.0 | 26.8 | 26.8 | 26.6 |
| Average night temperature (°C) | 21.8 | 21.4 | 22.1 | 20.7 | 19.8 | 17.3 | 18.7 | 19.5 | 21.3 | 22.5 | 23.3 | 23.2 |
| Absolute minimum temperature (°C) | 18.5 | 17.1 | 20.9 | 18.2 | 17.0 | 8.5 | 14.0 | 14.4 | 15.3 | 17.9 | 18.9 | 21.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.0 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 | 11.2 | 11.5 | 12.0 | 12.5 | 12.9 | 13.1 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 8.2 | 7.1 | 8.2 | 8.7 | 6.3 | 8.4 | 7.3 | 9.2 | 8.2 | 9.0 | 9.3 | 9.8 |
| Precipitation (mm) | 453 | 487 | 428 | 272 | 215 | 202 | 166 | 46 | 105 | 144 | 207 | 280 |
| Sunny days | 3 | 4 | 1 | 7 | 10 | 11 | 8 | 17 | 15 | 11 | 6 | 1 |
| Rainy days | 28 | 24 | 30 | 23 | 21 | 19 | 23 | 14 | 15 | 20 | 24 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Dieciocho de Septiembre is at