San Miguel de Allende climate
San Miguel de Allende (Guanajuato, Mexico) has a cold semi-arid climate (Köppen BSk). The average temperature over the year is 18 °C64 °F, and about 603 mm24 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
San Miguel de Allende climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 2169 | 541 | 1355 | 110.4 | 1 |
| Feb | 2475 | 744 | 1559 | 160.6 | 0 |
| Mar | 2780 | 947 | 1864 | 140.6 | 0 |
| Apr | 3085 | 1253 | 2169 | 90.4 | 0 |
| May | 3086 | 1457 | 2271 | 351.4 | 0 |
| Jun | 2882 | 1457 | 2169 | 1034.1 | 0 |
| Jul | 2678 | 1356 | 1967 | 1355.3 | 0 |
| Aug | 2678 | 1355 | 1967 | 1124.4 | 0 |
| Sep | 2476 | 1254 | 1865 | 1114.4 | 0 |
| Oct | 2475 | 1051 | 1763 | 391.5 | 0 |
| Nov | 2271 | 846 | 1558 | 130.5 | 0 |
| Dec | 2170 | 643 | 1456 | 50.2 | 1 |
| Year | 3086 | 541 | 1864 | 60324 | 3 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 60% | 37% | 4.8 | 10:59 |
| Feb | 55% | 31% | 5.8 | 11:26 |
| Mar | 48% | 30% | 6.7 | 11:59 |
| Apr | 42% | 34% | 7.2 | 12:36 |
| May | 49% | 43% | 7.0 | 13:07 |
| Jun | 64% | 59% | 6.3 | 13:24 |
| Jul | 72% | 66% | 6.1 | 13:17 |
| Aug | 73% | 61% | 6.1 | 12:50 |
| Sep | 76% | 64% | 5.5 | 12:14 |
| Oct | 72% | 46% | 5.4 | 11:38 |
| Nov | 69% | 33% | 5.0 | 11:07 |
| Dec | 63% | 34% | 4.7 | 10:52 |
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 de Allende is like
The warmest month is May, with an average high of 30 °C86 °F and a low of 14 °C57 °F. The coldest is January, when highs average 21 °C69 °F and lows 5 °C41 °F. There is a clear seasonal cycle, with 8.9 °C16 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 603 mm24 in. The wettest three-month stretch is July–September, which brings 59% of the annual total. Months with less than 20 mm0.8 in on average: November–April. The wettest month is July (135 mm5.3 in), the driest is December (5 mm0.2 in).
Relative humidity ranges from 42% in April to 76% in September. The clearest skies (lowest average cloud amount, 30%) are typical of March. Average wind speed near the ground ranges from 8 km/h (5 mph) in December to 10 km/h (6 mph) in June. Daylight lasts from about 10.9 hours in December to 13.4 hours in June.
Best time to visit San Miguel de Allende
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October–April: average highs of 21 °C69 °F to 30 °C85 °F with 5 mm0.2 in to 39 mm1.5 in of precipitation per month.
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 de Allende
- Wetter months (June–September) — highs 2476 to 28 °C82 °F, lows 1254 to 14 °C57 °F, about 115 mm4.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Drier months (October–May) — highs 2169 to 30 °C86 °F, lows 541 to 14 °C57 °F, about 18 mm0.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How San Miguel de Allende compares
Compared with Santiago de Querétaro, about 52 km to the southeast, San Miguel de Allende is on average 1.1 °C1.9 °F cooler and receives 12% less precipitation (603 mm24 in vs 682 mm27 in). The difference is largest in January (1.5 °C2.7 °F cooler).
Of the 96 places in Mexico covered by World Climates, San Miguel de Allende is the 81st warmest by annual mean temperature and the 63rd wettest by annual precipitation. See all of them on the Mexico climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Harare (Zimbabwe, Cwa), Mekele (Ethiopia, BSh) and Cochabamba (Bolivia, BSk).
Nearby places
- Santiago de Querétaro 52 km · 19 °C66 °F · 682 mm27 in
- Irapuato 69 km · 19 °C67 °F · 722 mm28 in
- San Juan del Río 97 km · 18 °C64 °F · 619 mm24 in
- León de los Aldama 100 km · 19 °C66 °F · 683 mm27 in
- San Luis Potosí 140 km · 18 °C64 °F · 500 mm20 in
- Morelia 143 km · 18 °C65 °F · 757 mm30 in
- Zamora de Hidalgo 191 km · 20 °C68 °F · 741 mm29 in
- Aguascalientes 192 km · 18 °C65 °F · 546 mm22 in
Frequently asked questions
What is the warmest month in San Miguel de Allende?
May is the warmest month in San Miguel de Allende, with an average high of 30 °C (86 °F) and an average low of 14 °C (57 °F).
What is the coldest month in San Miguel de Allende?
January is the coldest month, with an average high of 21 °C (69 °F) and an average low of 5 °C (41 °F).
When does it rain the most in San Miguel de Allende?
July is the wettest month with about 135 mm (5.3 in) of precipitation; December is the driest with about 5 mm (0.2 in).
What is the best time to visit San Miguel de Allende?
Judging by long-term averages, the most comfortable months are October–April.
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 2,042 m, while San Miguel de Allende lies at about 1,917 m. Temperatures on this page were therefore adjusted by +0.8 °C1.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.