Average annual temperature is 27.9 °C
Absolute maximum temperature: 39.6 °C
Absolute minimum temperature: 20.6 °C
Number of sunny days: 105 days
Number of rainy days: 260 days
Look at detailed online map of San Marcos Lempa
* Weather data for San Marcos Lempa El Salvador is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 36.4 | 39.3 | 38.8 | 39.2 | 39.6 | 34.9 | 37.0 | 36.4 | 35.8 | 34.1 | 34.9 | 37.0 |
| Average daytime temperature (°C) | 33.8 | 36.1 | 34.8 | 35.3 | 34.4 | 32.0 | 33.8 | 32.5 | 32.7 | 30.5 | 32.1 | 34.4 |
| Average temperature (°C) | 27.2 | 28.5 | 28.2 | 28.9 | 28.9 | 27.4 | 28.3 | 27.8 | 27.8 | 26.4 | 27.0 | 28.1 |
| Average night temperature (°C) | 22.9 | 23.7 | 23.8 | 24.6 | 25.0 | 24.2 | 24.8 | 24.6 | 24.3 | 23.7 | 23.8 | 24.2 |
| Absolute minimum temperature (°C) | 20.6 | 22.1 | 22.6 | 23.1 | 23.6 | 23.4 | 23.7 | 23.2 | 23.6 | 22.7 | 21.4 | 21.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.4 | 12.7 | 12.9 | 12.8 | 12.6 | 12.2 | 11.8 | 11.5 | 11.3 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.5 | 10.9 | 11.3 | 11.5 | 11.1 | 9.7 | 10.7 | 10.1 | 11.0 | 8.7 | 9.9 | 10.4 |
| Precipitation (mm) | 8 | 0 | 54 | 47 | 130 | 298 | 268 | 258 | 186 | 417 | 140 | 9 |
| Sunny days | 19 | 24 | 12 | 12 | 6 | 1 | 4 | 3 | 1 | 0 | 6 | 17 |
| Rainy days | 12 | 4 | 19 | 18 | 25 | 29 | 27 | 28 | 29 | 31 | 24 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Marcos Lempa is at