San Miguel climate
San Miguel (El Salvador) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 28 °C83 °F, and about 1,271 mm50 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
San Miguel climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3493 | 2271 | 2882 | 30.1 |
| Feb | 3595 | 2373 | 2984 | 30.1 |
| Mar | 3697 | 2475 | 3086 | 60.2 |
| Apr | 3696 | 2577 | 3187 | 341.4 |
| May | 3391 | 2577 | 2984 | 1907.5 |
| Jun | 3188 | 2576 | 2882 | 1997.8 |
| Jul | 3290 | 2476 | 2883 | 1365.4 |
| Aug | 3290 | 2576 | 2883 | 1867.3 |
| Sep | 3087 | 2476 | 2781 | 2469.7 |
| Oct | 3086 | 2475 | 2780 | 2158.5 |
| Nov | 3188 | 2272 | 2780 | 411.6 |
| Dec | 3290 | 2271 | 2781 | 100.4 |
| Year | 3697 | 2271 | 2883 | 1,27150 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 57% | 22% | 5.6 | 11:25 |
| Feb | 53% | 26% | 6.2 | 11:41 |
| Mar | 52% | 30% | 6.5 | 12:01 |
| Apr | 57% | 48% | 6.1 | 12:25 |
| May | 71% | 71% | 5.6 | 12:45 |
| Jun | 79% | 76% | 5.7 | 12:55 |
| Jul | 73% | 67% | 6.2 | 12:51 |
| Aug | 75% | 69% | 6.1 | 12:34 |
| Sep | 82% | 76% | 5.6 | 12:11 |
| Oct | 82% | 70% | 5.2 | 11:48 |
| Nov | 74% | 40% | 5.5 | 11:29 |
| Dec | 66% | 23% | 5.4 | 11:20 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of San Miguel is like
The warmest month is April, with an average high of 36 °C96 °F and a low of 25 °C77 °F. The coldest is November, when highs average 31 °C88 °F and lows 22 °C72 °F. Seasonal differences are small — just 3.8 °C6.9 °F between the warmest and the coolest month.
It is wet, with about 1,271 mm50 in of precipitation per year. The wettest three-month stretch is August–October, which brings 51% of the annual total. Months with less than 20 mm0.8 in on average: December–March. The wettest month is September (246 mm9.7 in), the driest is January (3 mm0.1 in).
Relative humidity ranges from 52% in March to 82% in October. The clearest skies (lowest average cloud amount, 22%) are typical of January. Average wind speed near the ground ranges from 5 km/h (3 mph) in September to 9 km/h (6 mph) in January. Daylight lasts from about 11.3 hours in December to 12.9 hours in June.
Best time to visit San Miguel
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November: average highs of 31 °C88 °F to 31 °C88 °F with 41 mm1.6 in to 41 mm1.6 in of precipitation per month.
The most challenging month is September, which is hot, with average highs of 30 °C87 °F, very wet (246 mm9.7 in) and humid (82% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for San Miguel
- Wetter months (May–October) — highs 3086 to 33 °C91 °F, lows 2475 to 25 °C77 °F, about 196 mm7.7 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Drier months (November–April) — highs 3188 to 36 °C97 °F, lows 2271 to 25 °C77 °F, about 16 mm0.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How San Miguel compares
Compared with San Salvador, about 111 km to the west, San Miguel is on average 3.9 °C7 °F warmer and receives 15% less precipitation (1,271 mm50 in vs 1,489 mm59 in). The difference is largest in March (4.8 °C8.6 °F warmer).
Of the 3 places in El Salvador covered by World Climates, San Miguel is the warmest by annual mean temperature and the 3rd wettest by annual precipitation. See all of them on the El Salvador climate page.
Places in other countries with the most similar temperature and rainfall pattern: León (Nicaragua, Aw), Chinandega (Nicaragua, Aw) and Managua (Nicaragua, Aw).
Nearby places
- San Salvador 111 km · 24 °C76 °F · 1,489 mm59 in
- Tegucigalpa 125 km · 23 °C73 °F · 1,167 mm46 in
- Siguatepeque 130 km · 21 °C70 °F · 1,244 mm49 in
- Chinandega 148 km · 29 °C83 °F · 1,451 mm57 in
- Santa Ana 159 km · 24 °C76 °F · 1,298 mm51 in
- León 183 km · 28 °C83 °F · 1,451 mm57 in
- Danlí 183 km · 24 °C75 °F · 1,122 mm44 in
- Chiquimula 208 km · 25 °C77 °F · 1,439 mm57 in
Frequently asked questions
What is the warmest month in San Miguel?
April is the warmest month in San Miguel, with an average high of 36 °C (96 °F) and an average low of 25 °C (77 °F).
What is the coldest month in San Miguel?
November is the coldest month, with an average high of 31 °C (88 °F) and an average low of 22 °C (72 °F).
When does it rain the most in San Miguel?
September is the wettest month with about 246 mm (9.7 in) of precipitation; January is the driest with about 3 mm (0.1 in).
What is the best time to visit San Miguel?
Judging by long-term averages, the most comfortable months are November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 307 m, while San Miguel lies at about 130 m. Temperatures on this page were therefore adjusted by +1.1 °C2.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.