Brasília in September
In September, Brasília averages 30°C (86°F) during the day and 19°C (65°F) at night, with around 8 days of rain (22 mm total).
ShoulderConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
September is a great month to visit Brasília: pleasant temperatures and relatively few wet days.
How September compares to the rest of the year in Brasília
September is one of the warmest months in Brasília (1st of 12) and moderately rainy compared to the rest of the year (9th of 12). Daytime temperature runs 3°C above the annual average (27°C). September runs 2°C warmer than August (28°C) and stays flat into October.
September sunrise & sunset in Brasília
Times shown for Brasília 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 Brasília — September
Golden-hour and blue-hour windows for the 15th of September, in Brasília's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Brasília 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 (Shoulder) and Brasília's popularity.
Crowds & pricing — September in Brasília
Brasília is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Brasília
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.
Brasília in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 27°C / 80°F | 19°C / 66°F | 157 mm | 23 | — |
| February | 27°C / 80°F | 19°C / 66°F | 169 mm | 24 | — |
| March | 26°C / 80°F | 19°C / 66°F | 160 mm | 25 | — |
| April | 26°C / 79°F | 18°C / 65°F | 92 mm | 21 | — |
| May | 26°C / 78°F | 16°C / 61°F | 15 mm | 9 | — |
| June | 25°C / 78°F | 15°C / 59°F | 2 mm | 4 | — |
| July | 26°C / 78°F | 15°C / 58°F | 0 mm | 1 | — |
| August | 28°C / 82°F | 16°C / 62°F | 8 mm | 3 | — |
| September | 30°C / 86°F | 19°C / 65°F | 22 mm | 8 | — |
| October | 30°C / 85°F | 20°C / 67°F | 92 mm | 18 | — |
| November | 27°C / 81°F | 19°C / 66°F | 197 mm | 26 | — |
| December | 27°C / 80°F | 19°C / 66°F | 195 mm | 24 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Brasília in September →
Frequently asked questions
How hot is Brasília in September?
In September, Brasília averages a high of 30°C (86°F) and a low of 19°C (65°F) — generally hot.
Does it rain a lot in Brasília in September?
September sees occasional rain in Brasília, with about 8 rainy days on average.
Is September a good time to visit Brasília?
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 Brasília in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full September packing list for Brasília for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.