Atalaia do Norte, Brazil Climate
The warmest month is September, with an average high of 29°C; the coldest is July, with an average low of 22°C. A normal year brings 2619 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
- 30°C
- Normal low
- 23°C
- Reanalysis high
- 37°Cin 2005
- Reanalysis low
- 21°Cin 2008
- Chance of a wet day
- 65%
- Daylight
- 12 h 07 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 | 28°C | 23°C | 35°C (1992) | 20°C (1999) | 295 mm | 27.9 |
| February | 29°C | 23°C | 35°C (1992) | 21°C (2000) | 268 mm | 25.4 |
| March | 28°C | 23°C | 33°C (1992) | 21°C (1999) | 285 mm | 27.9 |
| April | 28°C | 23°C | 33°C (1992) | 19°C (2013) | 255 mm | 24.0 |
| May | 28°C | 23°C | 30°C (2016) | 18°C (1998) | 217 mm | 24.8 |
| June | 28°C | 22°C | 30°C (2017) | 16°C (1994) | 162 mm | 21.0 |
| July | 28°C | 22°C | 32°C (2005) | 16°C (2017) | 127 mm | 18.6 |
| August | 29°C | 22°C | 35°C (2005) | 14°C (1999) | 121 mm | 18.6 |
| September | 29°C | 23°C | 38°C (2005) | 18°C (1995) | 162 mm | 21.0 |
| October | 29°C | 23°C | 39°C (1997) | 20°C (1999) | 217 mm | 24.8 |
| November | 29°C | 23°C | 35°C (1997) | 20°C (1999) | 234 mm | 24.0 |
| December | 28°C | 23°C | 34°C (1991) | 21°C (1998) | 276 mm | 27.9 |
| Year | 29°C | 23°C | 2619 mm | 286 |
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.
2619 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 Atalaia do Norte.
The muggiest month is January, when 100 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 | 24°C | 92% | 0% | 0% | 0% | 0% | 41% | 59% |
| February | 24°C | 91% | 0% | 0% | 0% | 0% | 42% | 58% |
| March | 24°C | 91% | 0% | 0% | 0% | 0% | 42% | 58% |
| April | 24°C | 92% | 0% | 0% | 0% | 1% | 42% | 57% |
| May | 24°C | 92% | 0% | 0% | 0% | 2% | 47% | 51% |
| June | 23°C | 91% | 0% | 0% | 0% | 2% | 71% | 26% |
| July | 23°C | 89% | 0% | 0% | 1% | 5% | 85% | 9% |
| August | 23°C | 88% | 0% | 0% | 1% | 4% | 72% | 23% |
| September | 24°C | 88% | 0% | 0% | 0% | 2% | 57% | 41% |
| October | 24°C | 89% | 0% | 0% | 0% | 1% | 47% | 52% |
| November | 24°C | 91% | 0% | 0% | 0% | 0% | 31% | 69% |
| December | 24°C | 92% | 0% | 0% | 0% | 0% | 31% | 69% |
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 July, with the sky 63 percent covered on average; the cloudiest is February, at 87 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 June, averaging 2.9 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jan 2, with 12 h 23 min of daylight; the shortest is Jun 3, with 11 h 52 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 Atalaia do Norte 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.