Last updated: August 27, 2025
In September, the average temperature in Santa Ana Viejo, Mexico is a warm 29°C (84°F), with lows dipping to a refreshing 14°C (57°F) and peaking at a scorching 40°C (105°F). Expect around 59 mm (2.3 in) of precipitation spread over 5 days, coupled with an average humidity of 72%. Prepare for a mix of sun and occasional showers in this vibrant locale!
In September in Santa Ana Viejo, the average temperature is 29°C (84°F). Maximums can reach 40°C (105°F), while minimums can drop to as low as 14°C (57°F). It's essential to pack accordingly for your trip, as the weather can vary significantly throughout the day.
In Santa Ana Viejo in September, the precipitation amount is 59 mm (2.3 in) over the course of 5 days.
In Santa Ana Viejo in September humidity is 72%. With an average temperature of 29°C (84°F), this humidity feels like walking through a warm, damp sponge, making travel uncomfortable as the heat clings to your skin and drains your energy.
In Santa Ana Viejo 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 Santa Ana Viejo.
UV Risk Categories
Weather in Santa Ana Viejo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Ana Viejo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (56°F) | 25 mm (1.0 inches) | 74% | moderate |
| February Weather | 14°C (58°F) | 26 mm (1.0 inches) | 71% | high |
| March Weather | 18°C (64°F) | 18 mm (0.7 inches) | 60% | very high |
| April Weather | 23°C (73°F) | 3 mm (0.1 inches) | 43% | extreme |
| May Weather | 26°C (79°F) | 2 mm (0.1 inches) | 32% | extreme |
| June Weather | 31°C (88°F) | 4 mm (0.2 inches) | 28% | extreme |
| July Weather | 31°C (88°F) | 62 mm (2.4 inches) | 38% | extreme |
| August Weather | 31°C (88°F) | 52 mm (2.1 inches) | 60% | extreme |
| September Weather | 29°C (84°F) | 59 mm (2.3 inches) | 72% | extreme |
| October Weather | 24°C (76°F) | 11 mm (0.4 inches) | 66% | very high |
| November Weather | 19°C (67°F) | 29 mm (1.1 inches) | 74% | high |
| December Weather | 14°C (57°F) | 20 mm (0.8 inches) | 81% | moderate |