Last updated: August 23, 2025
In San Luis, Cuba, the average temperature in September soars to a warm 27°C (81°F), with a comfortable minimum of 22°C (71°F) and a sizzling maximum of 34°C (94°F). Expect some rain, too, with an average precipitation of 136 mm (5.3 in) spread over 22 days. Don't forget, the air is often humid, with an average humidity level of 80% that accentuates the tropical vibe!
In September in San Luis, the average temperature is 27°C (81°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to as low as 22°C (71°F). This pleasant climate makes San Luis an ideal destination for travelers seeking warm and comfortable weather.
In San Luis, in September, the precipitation amount is 136 mm (5.3 in) spread over 22 days.
In San Luis in September humidity is 80%. With an average temperature of 27°C (81°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making travel tiring as sweat beads form quickly and the air feels thick and heavy.
In San Luis in September, 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 September’s weather to other months in San Luis, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 23°C (75°F) | 21 mm (0.8 inches) | 76% | very high |
| February Weather | 24°C (76°F) | 17 mm (0.7 inches) | 74% | extreme |
| March Weather | 24°C (76°F) | 35 mm (1.4 inches) | 72% | extreme |
| April Weather | 26°C (78°F) | 56 mm (2.2 inches) | 72% | extreme |
| May Weather | 26°C (79°F) | 173 mm (6.8 inches) | 70% | extreme |
| June Weather | 27°C (81°F) | 99 mm (3.9 inches) | 73% | extreme |
| July Weather | 27°C (81°F) | 96 mm (3.8 inches) | 78% | extreme |
| August Weather | 28°C (82°F) | 106 mm (4.2 inches) | 81% | extreme |
| September Weather | 27°C (81°F) | 136 mm (5.3 inches) | 80% | extreme |
| October Weather | 26°C (79°F) | 116 mm (4.6 inches) | 80% | extreme |
| November Weather | 25°C (77°F) | 83 mm (3.3 inches) | 82% | very high |
| December Weather | 24°C (76°F) | 31 mm (1.2 inches) | 80% | very high |