Last updated: August 23, 2025
In San Luis, Guatemala, the average temperature in October hovers around 25°C (78°F), providing a delightful climate for outdoor activities. Expect minimum temperatures to dip to 18°C (65°F) and highs soaring up to 35°C (96°F). However, be prepared for a splash of rain, as the area receives approximately 267 mm (10.5 in) of precipitation over 25 days, contributing to an average humidity level of 86%.
In October in San Luis, the average temperature is 25°C (78°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 18°C (65°F). This climate makes San Luis an ideal destination for travelers who enjoy warm weather and outdoor activities.
In San Luis in October, the precipitation amount is 267 mm (10.5 in) over a span of 25 days.
In San Luis in October, humidity is 86%. With an average temperature of 25°C (78°F), this humidity feels like a warm, damp blanket wrapping around you, making outdoor activities challenging and potentially uncomfortable for traveling.
In San Luis in October, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Luis.
UV Risk Categories
Weather in San Luis varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in San Luis, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 22°C (72°F) | 70 mm (2.8 inches) | 85% | very high |
| February Weather | 23°C (74°F) | 45 mm (1.8 inches) | 78% | extreme |
| March Weather | 24°C (76°F) | 55 mm (2.2 inches) | 67% | extreme |
| April Weather | 27°C (81°F) | 54 mm (2.1 inches) | 62% | extreme |
| May Weather | 28°C (82°F) | 131 mm (5.2 inches) | 62% | extreme |
| June Weather | 27°C (81°F) | 204 mm (8.0 inches) | 63% | extreme |
| July Weather | 27°C (80°F) | 115 mm (4.5 inches) | 66% | extreme |
| August Weather | 27°C (80°F) | 138 mm (5.4 inches) | 73% | extreme |
| September Weather | 26°C (80°F) | 199 mm (7.8 inches) | 82% | extreme |
| October Weather | 25°C (78°F) | 267 mm (10.5 inches) | 86% | extreme |
| November Weather | 23°C (74°F) | 179 mm (7.1 inches) | 87% | very high |
| December Weather | 22°C (72°F) | 82 mm (3.2 inches) | 87% | very high |