San Miguel de Tucumán climate
San Miguel de Tucumán (Argentina) has a monsoon-influenced humid subtropical climate (Köppen Cwa). The average temperature over the year is 21 °C71 °F, and about 923 mm36 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
San Miguel de Tucumán climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 3391 | 2170 | 2780 | 1887.4 | 0 |
| Feb | 3188 | 2068 | 2678 | 1556.1 | 0 |
| Mar | 2985 | 1865 | 2475 | 1275.0 | 0 |
| Apr | 2780 | 1559 | 2170 | 783.1 | 0 |
| May | 2374 | 1151 | 1762 | 241.0 | 0 |
| Jun | 2170 | 745 | 1458 | 200.8 | 0 |
| Jul | 2170 | 644 | 1457 | 40.1 | 1 |
| Aug | 2577 | 948 | 1762 | 60.2 | 0 |
| Sep | 2984 | 1254 | 2169 | 140.6 | 0 |
| Oct | 3391 | 1762 | 2576 | 522.0 | 0 |
| Nov | 3493 | 1966 | 2679 | 1024.0 | 0 |
| Dec | 3392 | 2068 | 2780 | 1546.1 | 0 |
| Year | 3493 | 644 | 2171 | 92336 | 1 |
“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 | 64% | 64% | 6.3 | 13:39 |
| Feb | 69% | 65% | 5.8 | 13:03 |
| Mar | 72% | 57% | 5.2 | 12:19 |
| Apr | 73% | 52% | 4.4 | 11:29 |
| May | 71% | 47% | 3.8 | 10:49 |
| Jun | 68% | 43% | 3.6 | 10:28 |
| Jul | 59% | 37% | 4.0 | 10:36 |
| Aug | 46% | 30% | 4.9 | 11:11 |
| Sep | 41% | 37% | 5.8 | 11:59 |
| Oct | 45% | 48% | 6.3 | 12:47 |
| Nov | 51% | 52% | 6.6 | 13:29 |
| Dec | 60% | 60% | 6.4 | 13:49 |
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 Tucumán is like
The warmest month is January, with an average high of 33 °C91 °F and a low of 21 °C70 °F. The coldest is July, when highs average 21 °C70 °F and lows 6 °C44 °F. There is a clear seasonal cycle, with 13.1 °C23.6 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 923 mm36 in. The wettest three-month stretch is December–February, which brings 54% of the annual total. Months with less than 20 mm0.8 in on average: July–September. The wettest month is January (188 mm7.4 in), the driest is July (4 mm0.1 in).
Relative humidity ranges from 41% in September to 73% in April. The clearest skies (lowest average cloud amount, 30%) are typical of August. Average wind speed near the ground ranges from 6 km/h (4 mph) in June to 11 km/h (7 mph) in October. Daylight lasts from about 10.5 hours in June to 13.8 hours in December.
Best time to visit San Miguel de Tucumán
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April–September: average highs of 21 °C70 °F to 29 °C84 °F with 4 mm0.1 in to 78 mm3.1 in of precipitation per month.
The most challenging month is January, which is hot, with average highs of 33 °C91 °F and very wet (188 mm7.4 in).
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 Tucumán
- Summer (December–February) — highs 3188 to 33 °C92 °F, lows 2068 to 21 °C70 °F, about 166 mm6.5 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Autumn (March–May) — highs 2374 to 29 °C85 °F, lows 1151 to 18 °C65 °F, about 76 mm3.0 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.
- Winter (June–August) — highs 2170 to 25 °C77 °F, lows 644 to 9 °C48 °F, about 10 mm0.4 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (September–November) — highs 2984 to 34 °C93 °F, lows 1254 to 19 °C66 °F, about 56 mm2.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
How San Miguel de Tucumán compares
Of the 31 places in Argentina covered by World Climates, San Miguel de Tucumán is the 7th warmest by annual mean temperature and the 15th wettest by annual precipitation. See all of them on the Argentina climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Panzhihua (China, Cwa), Gaborone (Botswana, BSh) and Rustenburg (South Africa, BSh).
Nearby places
- Santiago del Estero 144 km · 22 °C71 °F · 682 mm27 in
- Catamarca 192 km · 21 °C70 °F · 473 mm19 in
- Salta 224 km · 21 °C70 °F · 783 mm31 in
- San Salvador de Jujuy 292 km · 19 °C66 °F · 790 mm31 in
- La Rioja 331 km · 22 °C71 °F · 436 mm17 in
- Copiapó 511 km · 17 °C62 °F · 38 mm1.5 in
- Córdoba 520 km · 19 °C66 °F · 799 mm31 in
- Tarija 589 km · 19 °C66 °F · 562 mm22 in
Frequently asked questions
What is the warmest month in San Miguel de Tucumán?
January is the warmest month in San Miguel de Tucumán, with an average high of 33 °C (91 °F) and an average low of 21 °C (70 °F).
What is the coldest month in San Miguel de Tucumán?
July is the coldest month, with an average high of 21 °C (70 °F) and an average low of 6 °C (44 °F).
When does it rain the most in San Miguel de Tucumán?
January is the wettest month with about 188 mm (7.4 in) of precipitation; July is the driest with about 4 mm (0.1 in).
What is the best time to visit San Miguel de Tucumán?
Judging by long-term averages, the most comfortable months are April–September.
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 389 m, while San Miguel de Tucumán lies at about 440 m. Temperatures on this page were therefore adjusted by −0.3 °C0.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.