Goiânia in September
In September, Goiânia averages 33°C (92°F) during the day and 20°C (69°F) at night, with around 8 days of rain (16 mm total).
Off-peakConditions are very hot — early-morning and evening sightseeing recommended. Occasional showers are likely but won't dominate.
September in Goiânia is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How September compares to the rest of the year in Goiânia
September is one of the warmest months in Goiânia (1st of 12) and moderately rainy compared to the rest of the year (8th of 12). Daytime temperature runs 4°C above the annual average (29°C). September runs 2°C warmer than August (31°C) and cools 1°C in October (32°C).
September sunrise & sunset in Goiânia
Times shown for Goiânia local time (America/Sao_Paulo), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Goiânia — September
Golden-hour and blue-hour windows for the 15th of September, in Goiânia's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Goiânia in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Off-peak) and Goiânia's popularity.
Crowds & pricing — September in Goiânia
This is off-peak for Goiânia — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: challenging tourism weather
Sun & mosquito risk — September in Goiânia
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Goiânia in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 29°C / 84°F | 20°C / 68°F | 151 mm | 24 | — |
| February | 28°C / 83°F | 20°C / 68°F | 164 mm | 25 | — |
| March | 28°C / 83°F | 20°C / 67°F | 142 mm | 26 | — |
| April | 29°C / 83°F | 19°C / 66°F | 69 mm | 18 | — |
| May | 28°C / 83°F | 17°C / 62°F | 10 mm | 7 | — |
| June | 28°C / 82°F | 16°C / 61°F | 1 mm | 1 | — |
| July | 28°C / 83°F | 15°C / 60°F | 1 mm | 1 | — |
| August | 31°C / 88°F | 18°C / 64°F | 2 mm | 2 | — |
| September | 33°C / 92°F | 20°C / 69°F | 16 mm | 8 | — |
| October | 32°C / 90°F | 21°C / 70°F | 96 mm | 20 | — |
| November | 29°C / 85°F | 20°C / 68°F | 153 mm | 26 | — |
| December | 29°C / 84°F | 20°C / 68°F | 178 mm | 24 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Goiânia in September →
Frequently asked questions
How hot is Goiânia in September?
In September, Goiânia averages a high of 33°C (92°F) and a low of 20°C (69°F) — generally hot.
Does it rain a lot in Goiânia in September?
September sees occasional rain in Goiânia, with about 8 rainy days on average.
Is September a good time to visit Goiânia?
September is hot. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Goiânia in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full September packing list for Goiânia for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.