Climate Insights for Acajutla

The climate in Acajutla is hot. The average annual temperature is 27°C and approximately 1741mm of precipitation falls per year. June is the wettest month, receiving around 373mm of rainfall. Acajutla is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, March, July. The coldest months are January, February, December, when temperatures can drop to 25°C.

Acajutla has relatively stable temperatures year-round, staying within a 5°C range. The warmest month is April, when average highs reach 30°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows.

Acajutla is a fairly wet location, receiving approximately 1741mm of precipitation annually, which averages out to around 145mm per month. The wettest month is June, averaging 373mm of rainfall. October and September also tend to see above-average precipitation. The driest month is February, with just 4mm. That's 369mm less than June, 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.

Acajutla is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 10km/h in winter, 9km/h in spring, 8km/h in summer, 8km/h in autumn.

It is currently autumn in Acajutla, which began on September 23, 2026. Acajutla 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 April at around 30°C, while the coldest stretch bottoms out in January near 25°C. Winter is next, beginning on December 21, 2026 (87 days from now).

The table below shows monthly climate averages for Acajutla 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.