Last updated: August 27, 2025
In San Rafael, Mexico, the average temperature in September hovers around 22°C (73°F). Expect comfortable days, but be prepared for variability, as temperatures can dip to a cool 12°C (54°F) or rise to a scorching 35°C (96°F). With an average precipitation of 178 mm (7.0 in) spread over 22 days, it's wise to bring an umbrella. You’ll also experience high humidity levels of around 84%, making it essential to stay hydrated and cool!
In September in San Rafael, the average temperature is 22°C (73°F). Maximum temperatures can reach 35°C (96°F), while minimum temperatures can drop to as low as 12°C (54°F). This makes San Rafael an ideal destination for travelers seeking warm weather with comfortable nights.
In San Rafael in September, the total precipitation amount is 178 mm (7.0 in), occurring over 22 days.
In San Rafael in September, humidity is 84%. With an average temperature of 22°C (73°F), this humidity feels like a warm, enveloping blanket, making outdoor activities quite uncomfortable and necessitating frequent breaks to stay hydrated while exploring.
In San Rafael in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Rafael.
UV Risk Categories
Weather in San Rafael varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Rafael, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 15°C (59°F) | 20 mm (0.8 inches) | 88% | very high |
| February Weather | 17°C (63°F) | 21 mm (0.8 inches) | 86% | very high |
| March Weather | 20°C (68°F) | 25 mm (1.0 inches) | 83% | extreme |
| April Weather | 23°C (73°F) | 24 mm (0.9 inches) | 80% | extreme |
| May Weather | 25°C (76°F) | 56 mm (2.2 inches) | 82% | extreme |
| June Weather | 24°C (75°F) | 132 mm (5.2 inches) | 79% | extreme |
| July Weather | 23°C (74°F) | 122 mm (4.8 inches) | 72% | extreme |
| August Weather | 24°C (75°F) | 103 mm (4.1 inches) | 74% | extreme |
| September Weather | 22°C (73°F) | 178 mm (7.0 inches) | 84% | extreme |
| October Weather | 20°C (69°F) | 154 mm (6.1 inches) | 92% | extreme |
| November Weather | 17°C (64°F) | 41 mm (1.6 inches) | 91% | very high |
| December Weather | 15°C (60°F) | 15 mm (0.6 inches) | 91% | high |