El Sunzal Temperature by Month

El Sunzal, El Salvador has a consistently very warm climate year-round, with daytime highs averaging 30°C (86°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.

With minimal seasonal shifts, El Sunzal experiences a constant climate year-round. Maximum daytime temperatures range from a very warm 31°C (88°F) in March to a comfortable 29°C (84°F) in September. At night, temperatures range from 24°C (75°F) in March to 23°C (73°F) in September.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. March, the warmest month, sees 294 hours of sunshine.

The chart below shows the average temperature throughout the year:

El Sunzal's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 El Sunzal, September is the coolest month, with average highs of 29°C (84°F) and humidity around 86%, considered very high. In March, the warmest month, temperatures average 31°C (88°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 El Sunzal this rarely lasts long on the ground.

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