Goiânia weather in September
In September, Goiânia has an average high of 34 °C93 °F and an average low of 19 °C67 °F, with about 43 mm1.7 in of precipitation. September is the warmest month of the year and ranks 8th for precipitation.
How September compares with other months
Compared with August, September is 2.8 °C5 °F warmer on average and wetter by 35 mm1.4 in. Compared with October, September is about the same temperature and drier by 79 mm3.1 in. Daylight lasts about 12.0 hours around the middle of the month. Average relative humidity is 43% and the average cloud amount 44%.
Is September a good time to visit Goiânia?
September is not among the most comfortable months by our comfort score: it is hot (average high 34 °C93 °F). The most comfortable months in Goiânia are May–July.
What to wear in September
For Goiânia in September, pack very light, breathable clothing, a sun hat and plenty of water.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Goiânia | 3493 | 1967 | 431.7 |
| Aparecida de Goiânia | 3492 | 1865 | 451.8 |
| Anápolis | 3289 | 1763 | 431.7 |
| Gama | 3289 | 1762 | 321.2 |
| Luziânia | 3391 | 1864 | 331.3 |
| Valparaíso de Goiás | 3289 | 1762 | 321.2 |
| Ceilândia | 3188 | 1661 | 321.2 |
| Brasília | 3188 | 1662 | 321.2 |
| Itumbiara | 3696 | 2169 | 341.4 |
Nearby places that are more than 1 °C1.8 °F warmer in September: Itumbiara; cooler: Anápolis, Gama, Luziânia and Valparaíso de Goiás.
Other months in Goiânia
- January28 °C82 °F / 19 °C67 °F
- February28 °C82 °F / 19 °C67 °F
- March28 °C82 °F / 19 °C66 °F
- April27 °C81 °F / 18 °C64 °F
- May26 °C80 °F / 15 °C59 °F
- June27 °C80 °F / 14 °C57 °F
- July28 °C83 °F / 14 °C57 °F
- August32 °C89 °F / 16 °C61 °F
- September34 °C93 °F / 19 °C67 °F
- October33 °C91 °F / 20 °C68 °F
- November29 °C85 °F / 20 °C67 °F
- December28 °C83 °F / 20 °C67 °F
Frequently asked questions
How warm is Goiânia in September?
In September the average high in Goiânia is 34 °C (93 °F) and the average low is 19 °C (67 °F).
Does it rain a lot in Goiânia in September?
On average about 43 mm (1.7 in) of precipitation falls in September; it ranks 8th of the 12 months.
Is September the warmest month in Goiânia?
Yes. September is the warmest month in Goiânia. The coldest month is July, with an average low of 14 °C (57 °F).
How long is the day in Goiânia in September?
In the middle of September the day in Goiânia lasts about 12.0 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Goiânia in September?
The average relative humidity in September is about 43%. This is a long-term average for the whole day.
How cloudy is Goiânia in September?
On average about 44% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
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.