Last updated: August 23, 2025
In September, the average temperature in San Vicente, El Salvador is a warm 26°C (79°F). Temperatures can range from a comfortable 21°C (69°F) to a sizzling 35°C (95°F). Expect moderate rainfall with an average precipitation of 277 mm (10.9 in) over 28 days, coupled with a relatively high average humidity of 77%. Prepare for a mix of warmth and moisture as you explore this vibrant destination!
In September in San Vicente, the average temperature is 26°C (79°F), with maximums reaching up to 35°C (95°F) and minimums dipping as low as 21°C (69°F). This makes it an ideal time for travelers who enjoy warm weather and outdoor activities.
In San Vicente in September, the total precipitation amount is 277 mm (10.9 in) spread over a duration of 28 days.
In San Vicente in September humidity is 77%. With an average temperature of 26°C (79°F), this humidity feels like walking through a warm, thick fog that clings to your skin, making every step feel heavier and more exhausting while exploring the sights.
In San Vicente 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 Vicente.
UV Risk Categories
Weather in San Vicente varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Vicente, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (79°F) | 2 mm (0.1 inches) | 63% | extreme |
| February Weather | 27°C (81°F) | 5 mm (0.2 inches) | 62% | extreme |
| March Weather | 28°C (83°F) | 5 mm (0.2 inches) | 59% | extreme |
| April Weather | 28°C (83°F) | 53 mm (2.1 inches) | 59% | extreme |
| May Weather | 27°C (81°F) | 311 mm (12.3 inches) | 59% | extreme |
| June Weather | 26°C (79°F) | 303 mm (11.9 inches) | 68% | extreme |
| July Weather | 27°C (81°F) | 136 mm (5.4 inches) | 77% | extreme |
| August Weather | 27°C (80°F) | 240 mm (9.5 inches) | 79% | extreme |
| September Weather | 26°C (79°F) | 277 mm (10.9 inches) | 77% | extreme |
| October Weather | 26°C (78°F) | 314 mm (12.3 inches) | 77% | extreme |
| November Weather | 26°C (79°F) | 66 mm (2.6 inches) | 75% | very high |
| December Weather | 26°C (79°F) | 7 mm (0.3 inches) | 66% | very high |