Last updated: August 27, 2025
In September, the average temperature in San Francisco de Borja, Mexico is a comfortable 19°C (67°F). Visitors can expect a range of temperatures, with a minimum of 9°C (49°F) and a maximum reaching up to 30°C (87°F). The weather is likely to be quite humid, with an average humidity of 86%. Rainfall can be expected, as 96 mm (3.8 in) of precipitation is anticipated over about 14 days.
In September in San Francisco de Borja, the average temperature is 19°C (67°F), with maximums that can reach 30°C (87°F) and minimums that can drop as low as 9°C (49°F). Be sure to pack layers to enjoy the pleasant days and cool evenings.
In San Francisco de Borja in September, the total precipitation amount is 96 mm (3.8 in) over the course of 14 days.
In San Francisco de Borja in September humidity is 86%. With an average temperature of 19°C (67°F), this humidity feels like traveling through a thick, warm blanket, making the air feel heavy and sticky, which can be quite uncomfortable for outdoor activities.
In San Francisco de Borja 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 Francisco de Borja.
UV Risk Categories
Weather in San Francisco de Borja varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Francisco de Borja, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 8°C (47°F) | 7 mm (0.3 inches) | 75% | high |
| February Weather | 10°C (51°F) | 8 mm (0.3 inches) | 65% | very high |
| March Weather | 14°C (57°F) | 8 mm (0.3 inches) | 58% | extreme |
| April Weather | 18°C (64°F) | 4 mm (0.1 inches) | 48% | extreme |
| May Weather | 21°C (71°F) | 4 mm (0.2 inches) | 48% | extreme |
| June Weather | 24°C (76°F) | 35 mm (1.4 inches) | 54% | extreme |
| July Weather | 22°C (71°F) | 111 mm (4.4 inches) | 72% | extreme |
| August Weather | 21°C (71°F) | 91 mm (3.6 inches) | 77% | extreme |
| September Weather | 19°C (67°F) | 96 mm (3.8 inches) | 86% | extreme |
| October Weather | 17°C (62°F) | 38 mm (1.5 inches) | 82% | very high |
| November Weather | 13°C (55°F) | 15 mm (0.6 inches) | 85% | very high |
| December Weather | 8°C (47°F) | 17 mm (0.7 inches) | 87% | high |