Jaú, Brazil Climate
The warmest month is October, with an average high of 32°C; the coldest is July, with an average low of 12°C. A normal year brings 1280 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 24
- Normal high
- 31°C
- Normal low
- 16°C
- Reanalysis high
- 39°Cin 2015
- Reanalysis low
- 10°Cin 1999
- Chance of a wet day
- 32%
- Daylight
- 12 h 09 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 | 30°C | 20°C | 40°C (2015) | 13°C (1994) | 242 mm | 21.7 |
| February | 30°C | 20°C | 39°C (2014) | 14°C (1991) | 175 mm | 19.8 |
| March | 30°C | 19°C | 37°C (2003) | 14°C (2004) | 133 mm | 18.6 |
| April | 28°C | 17°C | 36°C (2020) | 5°C (1999) | 72 mm | 9.0 |
| May | 25°C | 14°C | 33°C (2020) | 4°C (2003) | 68 mm | 6.2 |
| June | 25°C | 13°C | 31°C (2020) | -1°C (1994) | 42 mm | 6.0 |
| July | 25°C | 12°C | 32°C (2006) | -1°C (2000) | 31 mm | 3.1 |
| August | 28°C | 13°C | 36°C (2019) | 1°C (1993) | 31 mm | 3.1 |
| September | 31°C | 15°C | 41°C (2020) | 3°C (2002) | 66 mm | 9.0 |
| October | 32°C | 17°C | 42°C (2020) | 9°C (1993) | 105 mm | 12.4 |
| November | 31°C | 18°C | 40°C (2019) | 11°C (2006) | 132 mm | 15.0 |
| December | 31°C | 19°C | 39°C (2019) | 12°C (2001) | 183 mm | 21.7 |
| Year | 29°C | 16°C | 1280 mm | 146 |
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.
1280 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 Jaú.
The muggiest month is February, when 88 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 | 80% | 0% | 2% | 12% | 59% | 28% | 0% |
| February | 20°C | 80% | 0% | 1% | 11% | 61% | 27% | 0% |
| March | 20°C | 81% | 0% | 2% | 19% | 60% | 19% | 0% |
| April | 18°C | 80% | 3% | 15% | 35% | 44% | 3% | 0% |
| May | 15°C | 81% | 21% | 36% | 35% | 9% | 0% | 0% |
| June | 14°C | 80% | 33% | 47% | 18% | 2% | 0% | 0% |
| July | 12°C | 75% | 53% | 40% | 7% | 0% | 0% | 0% |
| August | 12°C | 69% | 59% | 33% | 8% | 0% | 0% | 0% |
| September | 14°C | 67% | 38% | 35% | 22% | 6% | 0% | 0% |
| October | 16°C | 69% | 12% | 23% | 38% | 25% | 1% | 0% |
| November | 17°C | 72% | 6% | 18% | 32% | 38% | 5% | 0% |
| December | 19°C | 76% | 0% | 6% | 23% | 54% | 17% | 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 33 percent covered on average; the cloudiest is January, at 75 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 8.6 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Dec 14, with 13 h 30 min of daylight; the shortest is Jun 15, with 10 h 46 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 Jaú 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.