Last updated: August 23, 2025
In San Luis, Guatemala, the average temperature in April hovers around 27°C (81°F), making it a warm destination for visitors. Expect temperatures to range from a minimum of 16°C (60°F) to a sweltering maximum of 40°C (104°F). You'll also want to prepare for some rain, as 54 mm (2.1 in) of precipitation is expected over about 9 days. With an average humidity of 62%, the air can feel quite muggy, so pack accordingly!
In April in San Luis, the average temperature is 27°C (81°F). Maximums can reach 40°C (104°F), while minimums can drop to as low as 16°C (60°F). It's advisable to pack accordingly and stay hydrated while enjoying the pleasant yet variable weather during your travels.
In San Luis in April, the precipitation amount is 54 mm (2.1 in) over a span of 9 days.
In San Luis in April humidity is 62%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, soft blanket, making travel feel both cozy and slightly sluggish as you navigate through the warmth.
In San Luis in April, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Luis, you can check here.
UV Risk Categories
Weather in San Luis varies notably across the year, with each month offering distinct climate conditions. This page compares April’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 |