Whether you're visiting La Unión department in El Salvador during the peak of April (33°C (91°F)) or the cooler months around October (30°C (86°F)), knowing what to pack starts with understanding the local climate. Our overview is based on data from La Unión, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
High temperatures are a constant in La Unión department, especially in La Unión, with average maximums staying above 30°C (86°F) all year long.
March, April and July are generally the hottest months of the year.
When it comes to rainfall, La Unión department sees significant variations throughout the year. September tends to be the wettest, receiving 353 mm (14 in) of rain, while January is much drier with just 1 mm (0.04 in). Travelers should note that the rainy season falls during May, June, August, September and October, bringing substantial precipitation ranging from 234 mm (9.2 in) to 353 mm (14 in) monthly. For those seeking drier weather, January, February, March and December typically see minimal rainfall, never exceeding 8 mm (0.3 in).
