Poá, Brazil Climate
The warmest month is February, with an average high of 27°C; the coldest is July, with an average low of 12°C. A normal year brings 1525 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 26°C
- Normal low
- 15°C
- Reanalysis high
- 35°Cin 2015
- Reanalysis low
- 9°Cin 1999
- Chance of a wet day
- 52%
- Daylight
- 12 h 11 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 27°C | 19°C | 35°C (2014) | 13°C (2012) | 242 mm | 24.8 |
| February | 27°C | 19°C | 37°C (2014) | 14°C (2005) | 203 mm | 22.6 |
| March | 27°C | 19°C | 33°C (2014) | 13°C (1997) | 177 mm | 21.7 |
| April | 25°C | 17°C | 32°C (2014) | 9°C (1999) | 90 mm | 15.0 |
| May | 23°C | 14°C | 30°C (2018) | 6°C (2020) | 74 mm | 9.3 |
| June | 22°C | 13°C | 29°C (2014) | 0°C (1994) | 57 mm | 9.0 |
| July | 22°C | 12°C | 31°C (2018) | 3°C (2000) | 56 mm | 9.3 |
| August | 24°C | 13°C | 33°C (2015) | 4°C (2011) | 40 mm | 6.2 |
| September | 26°C | 14°C | 38°C (2020) | 4°C (2002) | 129 mm | 12.0 |
| October | 27°C | 16°C | 39°C (2020) | 9°C (2003) | 121 mm | 18.6 |
| November | 27°C | 17°C | 36°C (2019) | 10°C (2016) | 147 mm | 21.0 |
| December | 27°C | 18°C | 34°C (2018) | 11°C (1992) | 189 mm | 21.7 |
| Year | 25°C | 16°C | 1525 mm | 191 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1525 mm in a normal year, most in January.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Poá.
The muggiest month is February, when 83 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 20°C | 84% | 0% | 1% | 17% | 69% | 12% | 0% |
| February | 20°C | 84% | 0% | 1% | 16% | 73% | 10% | 0% |
| March | 19°C | 86% | 0% | 2% | 23% | 67% | 7% | 0% |
| April | 18°C | 86% | 1% | 16% | 43% | 39% | 1% | 0% |
| May | 15°C | 85% | 17% | 45% | 36% | 3% | 0% | 0% |
| June | 14°C | 83% | 34% | 51% | 16% | 0% | 0% | 0% |
| July | 12°C | 80% | 53% | 44% | 3% | 0% | 0% | 0% |
| August | 13°C | 77% | 53% | 40% | 6% | 0% | 0% | 0% |
| September | 14°C | 76% | 29% | 47% | 22% | 2% | 0% | 0% |
| October | 16°C | 78% | 9% | 30% | 48% | 13% | 0% | 0% |
| November | 17°C | 80% | 4% | 21% | 43% | 31% | 1% | 0% |
| December | 19°C | 82% | 0% | 6% | 32% | 57% | 5% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is August, with the sky 47 percent covered on average; the cloudiest is January, at 79 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is September, averaging 13.7 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Dec 14, with 13 h 35 min of daylight; the shortest is Jun 16, with 10 h 41 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Poá in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.