Goiânia climate
Goiânia (Goiás, Brazil) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 23 °C74 °F, and about 1,399 mm55 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Goiânia climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2882 | 1967 | 2474 | 2399.4 |
| Feb | 2882 | 1967 | 2374 | 2068.1 |
| Mar | 2882 | 1966 | 2374 | 2098.2 |
| Apr | 2781 | 1864 | 2373 | 1094.3 |
| May | 2680 | 1559 | 2169 | 240.9 |
| Jun | 2780 | 1457 | 2069 | 60.2 |
| Jul | 2883 | 1457 | 2170 | 30.1 |
| Aug | 3289 | 1661 | 2475 | 80.3 |
| Sep | 3493 | 1967 | 2780 | 431.7 |
| Oct | 3391 | 2068 | 2680 | 1224.8 |
| Nov | 2985 | 2067 | 2476 | 1947.6 |
| Dec | 2883 | 2067 | 2475 | 2349.2 |
| Year | 3493 | 1457 | 2374 | 1,39955 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 80% | 5.7 | 13:01 |
| Feb | 82% | 77% | 5.8 | 12:40 |
| Mar | 83% | 73% | 5.5 | 12:14 |
| Apr | 82% | 52% | 5.4 | 11:44 |
| May | 76% | 37% | 5.0 | 11:21 |
| Jun | 68% | 26% | 4.8 | 11:08 |
| Jul | 56% | 20% | 5.1 | 11:13 |
| Aug | 44% | 23% | 5.7 | 11:33 |
| Sep | 43% | 44% | 5.9 | 12:02 |
| Oct | 59% | 71% | 5.8 | 12:30 |
| Nov | 76% | 81% | 5.6 | 12:55 |
| Dec | 80% | 82% | 5.6 | 13:07 |
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 Goiânia is like
The warmest month is September, with an average high of 34 °C93 °F and a low of 19 °C67 °F. The coldest is June, when highs average 27 °C80 °F and lows 14 °C57 °F. Seasonal differences are small — just 6.1 °C11 °F between the warmest and the coolest month.
It is wet, with about 1,399 mm55 in of precipitation per year. The wettest three-month stretch is December–February, which brings 49% of the annual total. Months with less than 20 mm0.8 in on average: June–August. The wettest month is January (239 mm9.4 in), the driest is July (3 mm0.1 in).
Relative humidity ranges from 43% in September to 83% in March. The clearest skies (lowest average cloud amount, 20%) are typical of July. Average wind speed near the ground ranges from 5 km/h (3 mph) in March to 10 km/h (6 mph) in August. Daylight lasts from about 11.1 hours in June to 13.1 hours in December.
Best time to visit Goiânia
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–July: average highs of 26 °C80 °F to 28 °C83 °F with 3 mm0.1 in to 24 mm0.9 in of precipitation per month.
The most challenging month is January, which is very wet (239 mm9.4 in) and humid (82% 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.
Goiânia weather by month
- 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
What to pack for Goiânia
- Wetter months (October–March) — highs 2882 to 33 °C91 °F, lows 1966 to 20 °C68 °F, about 201 mm7.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (April–September) — highs 2680 to 34 °C93 °F, lows 1457 to 19 °C67 °F, about 32 mm1.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Goiânia compares
Compared with Brasília, about 173 km to the northeast, Goiânia is on average 2.1 °C3.9 °F warmer and receives 7% more precipitation (1,399 mm55 in vs 1,303 mm51 in). The difference is largest in September (2.7 °C4.8 °F warmer).
Of the 223 places in Brazil covered by World Climates, Goiânia is the 120th warmest by annual mean temperature and the 78th 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 (seasons shifted for the other hemisphere where needed): Nsukka (Nigeria, Aw), Shinyanga (Tanzania, Aw) and Bariadi (Tanzania, Aw).
The same NASA POWER grid cell also contains Senador Canedo (pop. 175,042) and Trindade (pop. 142,431). Their long-term averages in this dataset are essentially the same as for Goiânia, so they do not have separate pages.
Nearby places
- Aparecida de Goiânia 16 km · 23 °C73 °F · 1,285 mm51 in
- Anápolis 51 km · 22 °C71 °F · 1,411 mm56 in
- Gama 146 km · 22 °C71 °F · 1,303 mm51 in
- Luziânia 147 km · 22 °C72 °F · 1,304 mm51 in
- Valparaíso de Goiás 152 km · 22 °C71 °F · 1,303 mm51 in
- Ceilândia 154 km · 21 °C70 °F · 1,303 mm51 in
- Brasília 173 km · 21 °C70 °F · 1,303 mm51 in
- Itumbiara 194 km · 25 °C78 °F · 1,164 mm46 in
Frequently asked questions
What is the warmest month in Goiânia?
September is the warmest month in Goiânia, with an average high of 34 °C (93 °F) and an average low of 19 °C (67 °F).
What is the coldest month in Goiânia?
June is the coldest month, with an average high of 27 °C (80 °F) and an average low of 14 °C (57 °F).
When does it rain the most in Goiânia?
January is the wettest month with about 239 mm (9.4 in) of precipitation; July is the driest with about 3 mm (0.1 in).
What is the best time to visit Goiânia?
Judging by long-term averages, the most comfortable months are May–July.
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.