Monthly climate guide
Goiânia weather in September
With highs near 35°C (95°F) and lows around 20°C (68°F), September feels very hot in Goiânia. Rainfall averages about 26 mm (fairly dry) and the sky is a mix of sun and cloud. Daytime highs are 3°C warmer than August and 2°C warmer than October.
What stands out in September
- It's one of the drier stretches of the year in Goiânia.
- Expect a big gap between day and night — about 15°C.
- Rain is well below Goiânia's usual level (around 76% less).
- Just 170 km apart, but Goiânia runs about 2°C warmer than Brasília this month.
September is typically Goiânia's warmest month.
Avg high
35°C
95°F
Avg low
20°C
68°F
Rainfall
26 mm
fairly dry
Humidity
40%
relative
Sky
40%
cloud · a mix of sun and cloud
Goiânia weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 28°C / 82°F | 19°C / 67°F | 242 mm | 81% | 77% |
| February | 28°C / 82°F | 19°C / 67°F | 198 mm | 82% | 78% |
| March | 28°C / 82°F | 19°C / 67°F | 191 mm | 83% | 75% |
| April | 28°C / 82°F | 18°C / 65°F | 112 mm | 82% | 56% |
| May | 27°C / 81°F | 16°C / 60°F | 25 mm | 76% | 36% |
| June | 28°C / 82°F | 15°C / 59°F | 5 mm | 68% | 27% |
| July | 29°C / 85°F | 15°C / 58°F | 2 mm | 55% | 17% |
| August | 32°C / 90°F | 17°C / 62°F | 4 mm | 43% | 23% |
| September | 35°C / 95°F | 20°C / 68°F | 26 mm | 40% | 40% |
| October | 33°C / 92°F | 21°C / 69°F | 119 mm | 57% | 69% |
| November | 29°C / 85°F | 20°C / 67°F | 192 mm | 76% | 79% |
| December | 28°C / 83°F | 20°C / 67°F | 206 mm | 80% | 79% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- An extra layer — evenings are noticeably cooler than afternoons
Is September a good time to visit Goiânia?
Compare the months in the chart above to find your ideal window.
Best time to visit Goiânia →Other Brazil cities in September
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Goiânia weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/goiania/september
<a href="https://weathercompare.eu/weather/brazil/goiania/september">Goiânia weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/brazil/goiania" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Goiânia weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/goiania/september">Goiânia weather in September</a> – WeatherCompare</p>
Goiânia in September: quick answers
Is September a good time to visit Goiânia?
It can be, if you like heat: September highs in Goiânia are around 35°C. Good for the beach; plan sightseeing for early morning and evening.
How warm is Goiânia in September?
Average highs are about 35°C (95°F) and average lows about 20°C (68°F), based on 10 years of daily data.
Does it rain a lot in Goiânia in September?
Goiânia typically gets around 26 mm of rain in September — fairly dry.
Figures are long-term averages for the area around Goiânia (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.