September weather forecast and climate
San Salvador, El Salvador

The first month of the autumn, September, is also a moderately hot month in San Salvador, El Salvador, with average temperature ranging between max 29°C (84.2°F) and min 19.4°C (66.9°F).

Temperature

In September, the average high-temperature is almost the same as in August - a moderately hot 29°C (84.2°F). In September, the average low-temperature is 19.4°C (66.9°F).

Rainfall

The month with the most rainfall in San Salvador is September when the rain falls for 20 days and typically aggregates up to 348mm (13.7") of precipitation.

Daylight

In September, the average length of the day in San Salvador is 12.2h.

Sunshine

In San Salvador, the average sunshine is 6h.

UV index

Months with the highest UV index are February through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from the exposure to the Sun's UV radiation for the average person.
The average daily UV index of 12 transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Protect yourself by liberally applying a sunscreen of at least 30 SPF. Sunscreen prevents sunburn and decreases the damaging effects of Sun's radiation on the immune system.