San Salvador Temperature by Month

San Salvador, San Salvador, El Salvador has a consistently very warm climate year-round, with daytime highs averaging 32°C (90°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The temperature in San Salvador remains steady throughout the year, providing a consistently very warm climate. Maximum daytime temperatures range from a very warm 34°C (93°F) in March to a very warm 31°C (88°F) in October. Nights are mild year-round, with lows ranging from 22°C (72°F) in March to 20°C (68°F) in October.

The chart below illustrates the average maximum day and minimum night temperatures in San Salvador by month:

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. March, the warmest month, gets 294 hours of sunshine.

The chart below shows the average temperature throughout the year:

San Salvador's average annual maximum temperature is 32°C (90°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In San Salvador, October is the coolest month, with average highs of 31°C (88°F) and humidity around 83%, considered very high. In March, the warmest month, temperatures average 34°C (93°F) with 67% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in San Salvador this rarely lasts long on the ground.

For more on San Salvador's weather, including monthly rainfall, sunshine hours, and humidity, visit our San Salvador climate page.