Climate Insights for San Alejo

La Unión, El Salvador

Hottest
March
36°C peak97°F peak
Coldest
December
22°C low71°F low
Wettest
June
301 mm rain11.9 in rain
Best to Visit
Varies throughout year

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

0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 35°Average: 28°Min: 22°FebMax: 35°Average: 29°Min: 23°MarMax: 36°Average: 30°Min: 24°AprMax: 36°Average: 30°Min: 25°MayMax: 34°Average: 29°Min: 25°JunMax: 32°Average: 28°Min: 24°JulMax: 35°Average: 29°Min: 24°AugMax: 34°Average: 28°Min: 24°SepMax: 33°Average: 28°Min: 23°OctMax: 32°Average: 27°Min: 23°NovMax: 32°Average: 27°Min: 22°DecMax: 34°Average: 27°Min: 22°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 94°FAverage: 82°FMin: 71°FFebMax: 96°FAverage: 84°FMin: 73°FMarMax: 97°FAverage: 86°FMin: 75°FAprMax: 97°FAverage: 86°FMin: 77°FMayMax: 94°FAverage: 84°FMin: 77°FJunMax: 90°FAverage: 82°FMin: 75°FJulMax: 94°FAverage: 84°FMin: 75°FAugMax: 93°FAverage: 83°FMin: 75°FSepMax: 91°FAverage: 82°FMin: 74°FOctMax: 89°FAverage: 80°FMin: 74°FNovMax: 90°FAverage: 80°FMin: 72°FDecMax: 92°FAverage: 81°FMin: 71°F
Max
Average
Min

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

0mm50mm100mm150mm200mm250mm300mm350mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 1mmFebPrecipitation: 1mmMarPrecipitation: 9mmAprPrecipitation: 36mmMayPrecipitation: 190mmJunPrecipitation: 301mmJulPrecipitation: 91mmAugPrecipitation: 201mmSepPrecipitation: 264mmOctPrecipitation: 299mmNovPrecipitation: 89mmDecPrecipitation: 9mm
Precipitation
0in2in4in6in8in10in12inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 0inFebPrecipitation: 0inMarPrecipitation: 0.3inAprPrecipitation: 1.4inMayPrecipitation: 7.5inJunPrecipitation: 11.9inJulPrecipitation: 3.6inAugPrecipitation: 7.9inSepPrecipitation: 10.4inOctPrecipitation: 11.8inNovPrecipitation: 3.5inDecPrecipitation: 0.3in
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

0km/h5km/h10km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 7km/hFebWind Speed: 8km/hMarWind Speed: 7km/hAprWind Speed: 6km/hMayWind Speed: 5km/hJunWind Speed: 5km/hJulWind Speed: 6km/hAugWind Speed: 5km/hSepWind Speed: 4km/hOctWind Speed: 4km/hNovWind Speed: 5km/hDecWind Speed: 7km/h
Wind Speed
0mph5mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 5mphFebWind Speed: 5mphMarWind Speed: 5mphAprWind Speed: 4mphMayWind Speed: 3mphJunWind Speed: 3mphJulWind Speed: 4mphAugWind Speed: 3mphSepWind Speed: 3mphOctWind Speed: 3mphNovWind Speed: 3mphDecWind Speed: 4mph
Wind Speed

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.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
22 °C71 °F
35 °C94 °F
7 km/h5 mph
1 mm0 in
0 cm0 in
Feb
23 °C73 °F
35 °C96 °F
8 km/h5 mph
1 mm0 in
0 cm0 in
Mar
24 °C75 °F
36 °C97 °F
7 km/h5 mph
9 mm0.3 in
0 cm0 in
Apr
25 °C77 °F
36 °C97 °F
6 km/h4 mph
36 mm1.4 in
0 cm0 in
May
25 °C77 °F
34 °C94 °F
5 km/h3 mph
190 mm7.5 in
0 cm0 in
Jun
24 °C75 °F
32 °C90 °F
5 km/h3 mph
301 mm11.9 in
0 cm0 in
Jul
24 °C75 °F
35 °C94 °F
6 km/h4 mph
91 mm3.6 in
0 cm0 in
Aug
24 °C75 °F
34 °C93 °F
5 km/h3 mph
201 mm7.9 in
0 cm0 in
Sep
23 °C74 °F
33 °C91 °F
4 km/h3 mph
264 mm10.4 in
0 cm0 in
OctCurrent
23 °C74 °F
32 °C89 °F
4 km/h3 mph
299 mm11.8 in
0 cm0 in
Nov
22 °C72 °F
32 °C90 °F
5 km/h3 mph
89 mm3.5 in
0 cm0 in
Dec
22 °C71 °F
34 °C92 °F
7 km/h4 mph
9 mm0.3 in
0 cm0 in