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San Miguel Weather in May
During May, San Miguel experiences very high daytime temperatures of 34°C (93°F) and cooler nights around 24°C (75°F). May sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in San Miguel in May
As part of the rainy season, San Miguel sees around 16 days of rain in May, with an average of 253 mm (10 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.
Temperature in San Miguel in May
In May, San Miguel gets very high temperatures, with highs of 34°C (93°F). Nights cool to around 24°C (75°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.May in San Miguel has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
San Miguel Temperature in May
Min Temperature
24°C (75°F)
Max Temperature
34°C (93°F)
Chance of Rain
52%
Precipitation
253 mm (10 in)
Rainy days
16 days
Humidity
71%
San Miguel Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Miguel - and find the best time to visit.
Daily Historical Temperatures
36-year average (1984-2025)
Based on our historical records, temperatures in San Miguel typically stay consistent throughout May, with daily highs averaging around 34°C (93°F). Nights are warm, with lows typically ranging from 24°C (75°F) to 26°C (79°F).
Average temperatures in May
Historical weather records for San Miguel in May
Browse day-by-day weather records for San Miguel spanning 46 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Miguel historical weather extremes in May
Based on 25 years of weather observations in San Miguel between 2001 and 2026, these are the recorded extremes.
- The warmest day in May was on May 22, 2020, with a maximum of 43°C (109°F).
- On May 30, 2010, San Miguel saw its coldest May day with temperatures maxing out at 24°C (75°F).
- San Miguel registered its coldest May night on May 26, 2012, with temperatures dropping to 17°C (63°F).
Best Places in El Salvador in May
Find out more about the weather in El Salvador and which places have the best travel conditions in this month. See all of El Salvador in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Miguel in May
Get ready for hot weather in May! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. Also bring a poncho, it will rain a lot! Waterproof everything you can.
What To Do in San Miguel in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
San Miguel 3-Day Forecast
More climate data for San Miguel
See the full San Miguel climate overview or explore weather in El Salvador.
Popular in May
Where to go in May - average daytime high across popular destinations.
San Miguel
34°C (93°F) San Salvador32°C (90°F) El Cuco32°C (90°F) Santa Ana32°C (90°F) El Zonte30°C (86°F) Concepción de Ataco30°C (86°F) La Libertad30°C (86°F) El Sunzal30°C (86°F) Bucket list
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