Jundiaí climate
Jundiaí (São Paulo, Brazil) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 21 °C69 °F, and about 1,312 mm52 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Jundiaí climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2781 | 1865 | 2373 | 2439.6 |
| Feb | 2882 | 1865 | 2373 | 1696.7 |
| Mar | 2780 | 1864 | 2272 | 1345.3 |
| Apr | 2678 | 1660 | 2169 | 732.9 |
| May | 2374 | 1254 | 1864 | 622.4 |
| Jun | 2373 | 1152 | 1763 | 461.8 |
| Jul | 2374 | 1051 | 1762 | 471.9 |
| Aug | 2678 | 1152 | 1865 | 301.2 |
| Sep | 2883 | 1356 | 2169 | 592.3 |
| Oct | 2984 | 1560 | 2272 | 1054.1 |
| Nov | 2882 | 1661 | 2272 | 1566.2 |
| Dec | 2882 | 1864 | 2373 | 1867.3 |
| Year | 2984 | 1051 | 2169 | 1,31252 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 78% | 5.2 | 13:25 |
| Feb | 81% | 69% | 5.4 | 12:54 |
| Mar | 83% | 65% | 4.9 | 12:17 |
| Apr | 82% | 57% | 4.4 | 11:35 |
| May | 81% | 57% | 3.5 | 11:01 |
| Jun | 79% | 53% | 3.3 | 10:43 |
| Jul | 74% | 48% | 3.5 | 10:50 |
| Aug | 69% | 47% | 4.2 | 11:19 |
| Sep | 67% | 59% | 4.4 | 11:00 |
| Oct | 70% | 71% | 4.9 | 12:41 |
| Nov | 75% | 75% | 5.2 | 13:16 |
| Dec | 79% | 77% | 5.5 | 13:33 |
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 Jundiaí is like
The warmest month is February, with an average high of 28 °C82 °F and a low of 18 °C65 °F. The coldest is July, when highs average 23 °C74 °F and lows 10 °C51 °F. Seasonal differences are small — just 6.1 °C11 °F between the warmest and the coolest month.
It is wet, with about 1,312 mm52 in of precipitation per year. The wettest three-month stretch is December–February, which brings 46% of the annual total. The wettest month is January (243 mm9.6 in), the driest is August (30 mm1.2 in).
Relative humidity ranges from 67% in September to 83% in March. The clearest skies (lowest average cloud amount, 47%) are typical of August. Average wind speed near the ground ranges from 7 km/h (4 mph) in June to 9 km/h (6 mph) in October. Daylight lasts from about 10.7 hours in June to 13.6 hours in December.
Best time to visit Jundiaí
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September: average highs of 23 °C73 °F to 28 °C83 °F with 30 mm1.2 in to 62 mm2.4 in of precipitation per month.
The most challenging month is January, which is very wet (243 mm9.6 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 Jundiaí
- Wetter months (November–March) — highs 2780 to 28 °C82 °F, lows 1661 to 18 °C65 °F, about 178 mm7.0 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 2373 to 29 °C84 °F, lows 1051 to 16 °C60 °F, about 60 mm2.4 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 Jundiaí compares
Compared with Campinas, about 36 km to the northwest, Jundiaí is on average 0.4 °C0.8 °F cooler and receives a similar amount of precipitation.
Of the 223 places in Brazil covered by World Climates, Jundiaí is the 190th warmest by annual mean temperature and the 112th 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): Port Macquarie (Australia, Cfa), Córdoba (Mexico, Cwa) and East London (South Africa, Cfa).
The same NASA POWER grid cell also contains Itatiba (pop. 122,581) and Várzea Paulista (pop. 115,771). Their long-term averages in this dataset are essentially the same as for Jundiaí, so they do not have separate pages.
Nearby places
- Valinhos 27 km · 21 °C70 °F · 1,312 mm52 in
- Atibaia 35 km · 20 °C68 °F · 1,366 mm54 in
- Indaiatuba 35 km · 21 °C70 °F · 1,241 mm49 in
- Campinas 36 km · 21 °C70 °F · 1,312 mm52 in
- Bragança Paulista 43 km · 20 °C68 °F · 1,366 mm54 in
- Guarulhos 47 km · 20 °C67 °F · 1,380 mm54 in
- São Paulo 47 km · 20 °C68 °F · 1,352 mm53 in
- Sumaré 56 km · 22 °C71 °F · 1,241 mm49 in
Frequently asked questions
What is the warmest month in Jundiaí?
February is the warmest month in Jundiaí, with an average high of 28 °C (82 °F) and an average low of 18 °C (65 °F).
What is the coldest month in Jundiaí?
July is the coldest month, with an average high of 23 °C (74 °F) and an average low of 10 °C (51 °F).
When does it rain the most in Jundiaí?
January is the wettest month with about 243 mm (9.6 in) of precipitation; August is the driest with about 30 mm (1.2 in).
What is the best time to visit Jundiaí?
Judging by long-term averages, the most comfortable months are May–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.