Climate Insights for San Alejo
La Unión, El Salvador
Climate Overview
The climate in San Alejo is hot. The average annual temperature is 28°C and approximately 1,490 mm of precipitation falls per year. June is the wettest month, receiving around 301 mm of rainfall. San Alejo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: March, April, February. The coldest months are December, January, November, when temperatures can drop to 22°C.The climate in San Alejo is hot. The average annual temperature is 83°F and approximately 58.7 in of precipitation falls per year. June is the wettest month, receiving around 11.9 in of rainfall. San Alejo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: March, April, February. The coldest months are December, January, November, when temperatures can drop to 71°F.
Temperature
San Alejo sees moderate temperature variation throughout the year, ranging from 22°C to 36°C. March is the hottest month, with daytime highs reaching 36°C and an average of 30°C. December is the coolest month, with minimum temperatures around 22°C and an average of 27°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.San Alejo sees moderate temperature variation throughout the year, ranging from 71°F to 97°F. March is the hottest month, with daytime highs reaching 97°F and an average of 86°F. December is the coolest month, with minimum temperatures around 71°F and an average of 81°F. On average, daily temperatures fluctuate by about 19°F between overnight lows and afternoon highs.
Precipitation
San Alejo is a fairly wet location, receiving approximately 1,490 mm of precipitation annually, which averages out to around 124 mm per month. The wettest month is June, averaging 301 mm of rainfall. October and September also tend to see above-average precipitation. The driest month is February, with just 1 mm. That's 301 mm 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.San Alejo is a fairly wet location, receiving approximately 58.7 in of precipitation annually, which averages out to around 4.9 in per month. The wettest month is June, averaging 11.9 in of rainfall. October and September also tend to see above-average precipitation. The driest month is February, with just 0 in. That's 11.9 in 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.
Wind
San Alejo 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 February, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 4km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 8km/h in winter, 6km/h in spring, 5km/h in summer, 4km/h in autumn.San Alejo is relatively calm, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 5mph, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 3mph, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 2mph difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 5mph in winter, 4mph in spring, 3mph in summer, 3mph in autumn.
Monthly Climate Data
The table below shows monthly climate averages for San Alejo 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.The table below shows monthly climate averages for San Alejo based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.