Barretos climate
Barretos (São Paulo, Brazil) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 24 °C75 °F, and about 1,230 mm48 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Barretos climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2984 | 2170 | 2577 | 2429.5 |
| Feb | 2984 | 2170 | 2577 | 1777.0 |
| Mar | 2983 | 2169 | 2576 | 1536.0 |
| Apr | 2883 | 1966 | 2474 | 672.7 |
| May | 2780 | 1560 | 2170 | 502.0 |
| Jun | 2780 | 1458 | 2169 | 200.8 |
| Jul | 2882 | 1457 | 2169 | 140.5 |
| Aug | 3187 | 1660 | 2374 | 140.6 |
| Sep | 3392 | 1966 | 2679 | 461.8 |
| Oct | 3392 | 2169 | 2780 | 893.5 |
| Nov | 3188 | 2169 | 2679 | 1516.0 |
| Dec | 2985 | 2170 | 2578 | 2078.1 |
| Year | 3392 | 1457 | 2475 | 1,23048 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 80% | 75% | 5.9 | 13:15 |
| Feb | 79% | 68% | 6.1 | 12:48 |
| Mar | 81% | 60% | 5.6 | 12:16 |
| Apr | 77% | 44% | 5.2 | 11:39 |
| May | 74% | 42% | 4.4 | 11:09 |
| Jun | 70% | 34% | 4.1 | 10:53 |
| Jul | 60% | 29% | 4.4 | 10:00 |
| Aug | 51% | 29% | 5.2 | 11:25 |
| Sep | 49% | 42% | 5.5 | 12:00 |
| Oct | 58% | 62% | 5.9 | 12:36 |
| Nov | 69% | 68% | 6.1 | 13:07 |
| Dec | 77% | 72% | 6.1 | 13:22 |
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 Barretos is like
The warmest month is October, with an average high of 33 °C92 °F and a low of 21 °C69 °F. The coldest is June, when highs average 27 °C80 °F and lows 14 °C58 °F. Seasonal differences are small — just 6.4 °C11.5 °F between the warmest and the coolest month.
It is wet, with about 1,230 mm48 in of precipitation per year. The wettest three-month stretch is December–February, which brings 51% of the annual total. Months with less than 20 mm0.8 in on average: June–August. The wettest month is January (242 mm9.5 in), the driest is July (14 mm0.5 in).
Relative humidity ranges from 49% in September to 81% in March. The clearest skies (lowest average cloud amount, 29%) are typical of August. Average wind speed near the ground ranges from 7 km/h (4 mph) in February to 10 km/h (7 mph) in September. Daylight lasts from about 10.9 hours in June to 13.4 hours in December.
Best time to visit Barretos
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April–July: average highs of 27 °C80 °F to 28 °C83 °F with 14 mm0.5 in to 67 mm2.7 in of precipitation per month.
The most challenging month is January, which is very wet (242 mm9.5 in) and humid (80% 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 Barretos
- Wetter months (November–March) — highs 2983 to 31 °C88 °F, lows around 21 °C69 °F, about 186 mm7.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (April–October) — highs 2780 to 33 °C92 °F, lows 1457 to 21 °C69 °F, about 43 mm1.7 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 Barretos compares
Compared with São José do Rio Preto, about 89 km to the west, Barretos has practically the same average temperature and receives 6% more precipitation (1,230 mm48 in vs 1,164 mm46 in). The difference is largest in September (0.5 °C0.9 °F warmer).
Of the 223 places in Brazil covered by World Climates, Barretos is the 99th warmest by annual mean temperature and the 149th wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Morogoro (Tanzania, Aw), Kēng Tung (Myanmar, Aw) and Danlí (Honduras, Aw).
Nearby places
- Catanduva 77 km · 24 °C75 °F · 1,167 mm46 in
- Sertãozinho 88 km · 24 °C74 °F · 1,272 mm50 in
- São José do Rio Preto 89 km · 24 °C75 °F · 1,164 mm46 in
- Ribeirão Preto 105 km · 24 °C74 °F · 1,318 mm52 in
- Uberaba 112 km · 22 °C72 °F · 1,333 mm52 in
- Franca 122 km · 21 °C70 °F · 1,390 mm55 in
- Araraquara 143 km · 22 °C71 °F · 1,229 mm48 in
- Votuporanga 147 km · 24 °C75 °F · 1,224 mm48 in
Frequently asked questions
What is the warmest month in Barretos?
October is the warmest month in Barretos, with an average high of 33 °C (92 °F) and an average low of 21 °C (69 °F).
What is the coldest month in Barretos?
June is the coldest month, with an average high of 27 °C (80 °F) and an average low of 14 °C (58 °F).
When does it rain the most in Barretos?
January is the wettest month with about 242 mm (9.5 in) of precipitation; July is the driest with about 14 mm (0.5 in).
What is the best time to visit Barretos?
Judging by long-term averages, the most comfortable months are April–July.
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.