Last updated: August 27, 2025
In September, the average temperature in El Rosario de Arriba, Mexico is a pleasant 21°C (71°F). Expect a comfortable range, with minimum temperatures dipping to 15°C (59°F) and soaring up to a warm 33°C (91°F). Despite the warmth, you can anticipate minimal rainfall, with only 6 mm (0.2 in) of precipitation over the month. Keep in mind that the average humidity sits at a relatively high 76%, adding a touch of mugginess to the atmosphere.
In September in El Rosario de Arriba, the average temperature is 21°C (71°F). The maximum can reach 33°C (91°F), while the minimum can be as low as 15°C (59°F). This pleasant climate makes it an ideal time for travelers to explore the outdoors and enjoy various activities.
In El Rosario de Arriba in September, the total precipitation amount is 6 mm (0.2 in), spread over a duration of 0 days.
In El Rosario de Arriba in September humidity is 76%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket, making traveling both refreshing and a bit exhausting, as the air clings to your skin and you often find yourself reaching for water to stay hydrated.
In El Rosario de Arriba in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in El Rosario de Arriba.
UV Risk Categories
Weather in El Rosario de Arriba varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in El Rosario de Arriba, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 22 mm (0.9 inches) | 74% | moderate |
| February Weather | 14°C (58°F) | 20 mm (0.8 inches) | 76% | high |
| March Weather | 15°C (59°F) | 24 mm (1.0 inches) | 72% | very high |
| April Weather | 16°C (60°F) | 5 mm (0.2 inches) | 70% | extreme |
| May Weather | 16°C (61°F) | 7 mm (0.3 inches) | 75% | extreme |
| June Weather | 17°C (63°F) | 5 mm (0.2 inches) | 76% | extreme |
| July Weather | 20°C (68°F) | 3 mm (0.1 inches) | 77% | extreme |
| August Weather | 21°C (71°F) | 3 mm (0.1 inches) | 78% | extreme |
| September Weather | 21°C (71°F) | 6 mm (0.2 inches) | 76% | extreme |
| October Weather | 20°C (68°F) | 18 mm (0.7 inches) | 72% | very high |
| November Weather | 18°C (64°F) | 10 mm (0.4 inches) | 71% | high |
| December Weather | 15°C (59°F) | 22 mm (0.9 inches) | 71% | moderate |