El Salvador's hot, subtropical climate is largely affected by altitude. Dry season runs between November and April. Coastal areas are particularly hot, with a rainy season between May and October. Upland areas have a cooler, more temperate climate.

It is best to visit during the dry season and to avoid the hottest time of the year (March-April) when humidity levels are particularly high.

Lightweight clothing and rainwear during the wet season in coastal areas. Waterproof clothing is advisable all year round. Warm clothing should be taken for higher altitudes.