Last updated: August 27, 2025
In September, the average temperature in San Juan Bautista, Mexico hovers around 21°C (70°F), providing a pleasant climate for outdoor activities. Expect minimums of 14°C (58°F) and maximums reaching 28°C (83°F). However, be prepared for some rain, as 197 mm (7.8 in) of precipitation is distributed over 24 days. With an average humidity of 77%, it’s a great time to enjoy the lush landscapes that thrive in this environment.
In September in San Juan Bautista, the average temperature is 21°C (70°F). The maximum can reach 28°C (83°F) and the minimum can be as low as 14°C (58°F). This mild and pleasant climate makes it an ideal time for outdoor activities and exploration in San Juan Bautista.
In San Juan Bautista in September, the total precipitation amount is 197 mm (7.8 in) over the course of 24 days.
In San Juan Bautista in September, humidity is 77%. With an average temperature of 21°C (70°F), this humidity feels like a warm, slightly sticky embrace, making travel invigorating yet slightly uncomfortable as you navigate the vibrant streets and outdoor attractions.
In San Juan Bautista in September, 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 Juan Bautista, you can check here.
UV Risk Categories
Weather in San Juan Bautista varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Juan Bautista, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 16°C (62°F) | 81 mm (3.2 inches) | 84% | very high |
| February Weather | 17°C (64°F) | 53 mm (2.1 inches) | 73% | extreme |
| March Weather | 18°C (65°F) | 46 mm (1.8 inches) | 59% | extreme |
| April Weather | 21°C (70°F) | 55 mm (2.2 inches) | 52% | extreme |
| May Weather | 22°C (72°F) | 132 mm (5.2 inches) | 53% | extreme |
| June Weather | 21°C (70°F) | 297 mm (11.7 inches) | 55% | extreme |
| July Weather | 20°C (69°F) | 104 mm (4.1 inches) | 61% | extreme |
| August Weather | 21°C (70°F) | 159 mm (6.2 inches) | 71% | extreme |
| September Weather | 21°C (70°F) | 197 mm (7.8 inches) | 77% | extreme |
| October Weather | 20°C (69°F) | 205 mm (8.1 inches) | 78% | extreme |
| November Weather | 18°C (65°F) | 113 mm (4.4 inches) | 82% | very high |
| December Weather | 17°C (63°F) | 63 mm (2.5 inches) | 86% | very high |