Climate Overview
The climate in San Salvador Airport is hot. The average annual temperature is 26°C and approximately 1002mm of precipitation falls per year. October is the wettest month, receiving around 153mm of rainfall. San Salvador Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, July. The coldest months are March, January, February, when temperatures can drop to 23°C.
Temperature
San Salvador Airport has relatively stable temperatures year-round, staying within a 6°C range. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 28°C. March is the coolest month, with minimum temperatures around 23°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.
Precipitation
San Salvador Airport is a moderately rainy area, receiving approximately 1002mm of precipitation annually, which averages out to around 83mm per month. The wettest month is October, averaging 153mm of rainfall. September and May also tend to see above-average precipitation. The driest month is March, with just 27mm. That's 126mm less than October, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
San Salvador Airport is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
84 days until Autumn
It is currently summer in San Salvador Airport, which began on June 21, 2026. San Salvador Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 29°C, while the coldest stretch bottoms out in March near 23°C. Autumn is next, beginning on September 23, 2026 — 84 days from now.
Spring
Temperatures range from 23 to 26°C. Precipitation is moderate at around 203mm for the season, averaging 68mm per month. Winds are generally light, averaging 6km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 27 to 29°C. Precipitation is moderate at around 215mm for the season, averaging 72mm per month. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 28°C. Rainfall is heavy, totalling around 397mm across the season with a monthly average of 132mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 26°C. Precipitation is moderate at around 186mm for the season, averaging 62mm per month. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit San Salvador Airport is during January, February, March, April and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 53mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 29°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for San Salvador Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
