Some excellent weather information services for El Salvador
The weather in El Salvador is tropical in general. With the coasts and low lands of course being much hotter and more humid. (downright sweltering in the summer months!) The highlands above 1100 Meters tend to be cooler and less humid. However the sun is more intense so sunburns are even more of an issue. The nation’s capital, San Salvador, is mid elevation at about 800 meters and tends to be cooler than the coast and less humid. San Salvador is much more springlike especially in the winter rainy season.
Pack light clothes and think in terms of a warm spring day or a hot summer day. No need for parkas but during the rainy season you will want an umbrella and maybe a thin rain jacket. El Salvador life is a great life. It is hard to pin down exactly what is so awesome about living in El Salvador, but you will really love it here. The El Salvador geography is varied and provides many micro-climates thought the country.
Best Time to Visit:
El Salvador’s warm to hot, subtropical climate is highly affected by altitude. The higher the altitude the cooler the temperature. Dry season runs between November and April. Coastal areas are particularly hot, with a rainy season between May and October. If you are used to thinking of the beaches as the cool refreshing place to cool down think again! The upside is that the water is very warm and feels great all year. Upland areas have a cooler, more temperate climate and can get downright chilly for a tropical zone.
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. The coastal areas are the hottest, averaging between 22°C and 32°C throughout the year; the central areas vary dramatically throughout the year, from 19°C in the coldest months to 38°C in the warmest; and the mountainous areas are always cool, with temperatures averaging between 12°C and 23°C.
Cool lightweight clothing and rain wear during the wet season in coastal areas. Waterproof clothing is advisable all year round. Warmer but still light clothing should be taken for higher altitudes. And always bring both sandals and comfortable walking shoes as even the best sidewalks are a tad more adventurous than you might be used to. Salvadorans are somewhat conservative but sharp dressers. It is better to err on the side of more conservative clothing and looking more dressed up rather than looking scruffy or dirty.