Guarulhos climate
Guarulhos (São Paulo, Brazil) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 20 °C67 °F, and about 1,380 mm54 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Guarulhos climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2680 | 1865 | 2272 | 2279.0 |
| Feb | 2780 | 1865 | 2272 | 1787.0 |
| Mar | 2678 | 1763 | 2271 | 1536.0 |
| Apr | 2476 | 1660 | 2068 | 913.6 |
| May | 2272 | 1355 | 1763 | 682.7 |
| Jun | 2171 | 1253 | 1762 | 552.1 |
| Jul | 2171 | 1151 | 1661 | 622.5 |
| Aug | 2374 | 1152 | 1763 | 371.4 |
| Sep | 2577 | 1355 | 1966 | 672.7 |
| Oct | 2679 | 1558 | 2069 | 1064.2 |
| Nov | 2678 | 1660 | 2169 | 1515.9 |
| Dec | 2780 | 1763 | 2271 | 1847.2 |
| Year | 2780 | 1151 | 2067 | 1,38054 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 83% | 78% | 5.2 | 13:26 |
| Feb | 83% | 69% | 5.4 | 12:55 |
| Mar | 85% | 65% | 4.9 | 12:17 |
| Apr | 85% | 57% | 4.4 | 11:34 |
| May | 84% | 57% | 3.5 | 10:00 |
| Jun | 82% | 53% | 3.3 | 10:42 |
| Jul | 79% | 48% | 3.5 | 10:49 |
| Aug | 75% | 47% | 4.2 | 11:19 |
| Sep | 74% | 59% | 4.4 | 11:00 |
| Oct | 77% | 71% | 4.9 | 12:41 |
| Nov | 80% | 75% | 5.2 | 13:17 |
| Dec | 81% | 77% | 5.5 | 13:34 |
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 Guarulhos is like
The warmest month is February, with an average high of 27 °C80 °F and a low of 18 °C65 °F. The coldest is July, when highs average 21 °C71 °F and lows 11 °C51 °F. Seasonal differences are small — just 6.3 °C11.4 °F between the warmest and the coolest month.
It is wet, with about 1,380 mm54 in of precipitation per year. The wettest three-month stretch is December–February, which brings 43% of the annual total. The wettest month is January (227 mm9.0 in), the driest is August (37 mm1.4 in).
Relative humidity ranges from 74% in September to 85% 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 10 km/h (6 mph) in November. Daylight lasts from about 10.7 hours in June to 13.6 hours in December.
Best time to visit Guarulhos
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April–September: average highs of 21 °C71 °F to 25 °C77 °F with 37 mm1.4 in to 91 mm3.6 in of precipitation per month.
The most challenging month is January, which is very wet (227 mm9.0 in) and humid (83% 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 Guarulhos
- Wetter months (November–March) — highs 2678 to 27 °C80 °F, lows 1660 to 18 °C65 °F, about 179 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 2171 to 26 °C79 °F, lows 1151 to 16 °C60 °F, about 69 mm2.7 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.
How Guarulhos compares
Compared with São Paulo, about 14 km to the southwest, Guarulhos has practically the same average temperature and receives a similar amount of precipitation.
Of the 223 places in Brazil covered by World Climates, Guarulhos is the 204th warmest by annual mean temperature and the 83rd 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: Pinetown (South Africa, Cfa), Port Macquarie (Australia, Cfa) and East London (South Africa, Cfa).
The same NASA POWER grid cell also contains Santo André (pop. 662,373), Mauá (pop. 418,261), Itaquaquecetuba (pop. 369,275), Mogi das Cruzes (pop. 325,746), Suzano (pop. 320,261), Ferraz de Vasconcelos (pop. 179,198), São Caetano do Sul (pop. 172,693), Ribeirão Pires (pop. 115,559) and Poá (pop. 103,765). Their long-term averages in this dataset are essentially the same as for Guarulhos, so they do not have separate pages.
Nearby places
- São Paulo 14 km · 20 °C68 °F · 1,352 mm53 in
- Atibaia 38 km · 20 °C68 °F · 1,366 mm54 in
- Jundiaí 47 km · 21 °C69 °F · 1,312 mm52 in
- Bragança Paulista 57 km · 20 °C68 °F · 1,366 mm54 in
- Santos 59 km · 24 °C75 °F · 1,370 mm54 in
- Jacareí 61 km · 21 °C70 °F · 1,380 mm54 in
- Praia Grande 62 km · 24 °C75 °F · 1,370 mm54 in
- Valinhos 72 km · 21 °C70 °F · 1,312 mm52 in
Frequently asked questions
What is the warmest month in Guarulhos?
February is the warmest month in Guarulhos, with an average high of 27 °C (80 °F) and an average low of 18 °C (65 °F).
What is the coldest month in Guarulhos?
July is the coldest month, with an average high of 21 °C (71 °F) and an average low of 11 °C (51 °F).
When does it rain the most in Guarulhos?
January is the wettest month with about 227 mm (9.0 in) of precipitation; August is the driest with about 37 mm (1.4 in).
What is the best time to visit Guarulhos?
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 699 m, while Guarulhos lies at about 774 m. Temperatures on this page were therefore adjusted by −0.5 °C0.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.