Key Summary- El Salvador’s lowlands and coastline fall under the Köppen tropical savanna (Aw) climate, marked by a long dry season from November to April and an intense wet season from May to October.
- Elevation creates pockets of subtropical highland (Cwb) climate in the northern mountains, where temperatures stay cooler and nights can feel crisp, even while the coast swelters.
- The Pacific shoreline experiences persistently high humidity, and the wettest months frequently see afternoon downpours that transform roads into muddy trails, especially in rural areas.
El Salvador sits firmly in the tropics, its climate shaped by latitude, the Pacific Ocean, and a chain of volcanic highlands that climb to over 2,000 metres. The dominant Köppen type is tropical savanna (Aw), which covers the coastal plain, the central plateau, and interior valleys. Here you experience clear thermal seasons defined by rainfall, not temperature. From November to April, northeast trade winds suppress cloud building and deliver the dry season, locally called *verano*. By May, the Intertropical Convergence Zone drifts north, unleashing the wet season (*invierno*) with humid Pacific air and daily convective showers that can be brief but torrential. The subtropical highland (Cwb) zone appears where the terrain rises above roughly 1,200 metres along the border with Honduras; these areas see lower heat, a distinct dry winter, and pleasantly mild summers. Our charts at WeatherBox capture this shifting rhythm, showing how monthly rainfall soars from a few tens of millimetres in February to several hundred in September, while temperatures remain stubbornly warm near the coast.
The contrast between coast and highlands defines the Salvadoran experience. The narrow Pacific littoral, including popular surf breaks around El Tunco and the Balsamo Coast, bakes under daytime highs typically around 31°C to 35°C (88°F to 95°F) year-round, with high humidity that makes shade a necessity. Afternoon sea breezes take the edge off, but stickiness persists. Move inland to the capital, San Salvador, at roughly 650 metres, and the air thins to a more manageable 22°C to 30°C (72°F to 86°F). Head further up into the Apaneca-Ilamatepec range and you enter subtropical highland territory: villages such as Juayúa and the flower-lined trails of Cerro Verde enjoy daytime highs that rarely exceed 25°C (77°F) and evenings cool enough for a light jacket, especially from December to February. The wet season greens every hillside, swelling the coffee fincas and cloud forests, but the same rains soak colonial streets in Suchitoto and can turn paths to archaeological sites like Joya de Cerén into slick clay. Even then, mornings are often gloriously clear before the towering cumulus build for the afternoon deluge. The dry season delivers the opposite: dust hangs over rural tracks, and the terrain turns tawny, yet the days come with dazzling sunshine and lower humidity, ideal for wandering the Mayan ruins of Tazumal or lounging beside glistening crater lakes.
For travel, the most favourable window spans the dry season months, roughly late November to early April, when sunny skies and predictable weather open up the entire country with fewer interruptions. This is the period for catching gloriously clear mornings over Pacific surf breaks, hiking wind-cooled volcano slopes, and exploring markets without dodging downpours. The wet season offers its own rewards, a lush, rain-washed landscape and a quieter pace, but you are likely to encounter muddied secondary roads and periodic flooding that can delay journeys; the heaviest downpours concentrate from September into October. Packing should follow elevation: light, breathable fabrics, strong sun protection, and a reliable rain shell for the lower country; add a warm layer for evenings in the cooler highlands. El Salvador’s compact geography makes it possible to move from a tropical beach morning to a mountain afternoon that feels like spring, a dynamic best navigated with WeatherBox’s data and Köppen climate map. Explore our resources to see exactly how the Aw and Cwb zones shape rainfall timing and temperature ranges for your itinerary.
