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Brasilia Weather in September
September in Brasilia sees daytime temperatures around 31°C (88°F) and lows of 18°C (64°F) at night. Pack a rain jacket because some rainfall is likely.
Rainfall in Brasilia in September
Expect around 7 days of rain based on historical data, with 36 mm (1.4 in) average. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in Brasilia in September
Daytime temperatures in Brasilia reach 31°C (88°F) in September, dropping to 18°C (64°F) at night. It's usually most comfortable outside during the morning and later in the day. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. Typical temperatures can be misleading; some days will be hotter. Prepare with light clothing and plenty of hydration to stay cool.
Sunshine in Brasilia in September
Enjoy a sunny month with about 220 hours of sunshine, the clear skies make Brasilia even more beautiful.If your ideal day consists of dry skies and pleasant temperatures, May, June and July typically offer the best circumstances for Brasilia.
Brasilia Temperature in September
Min Temperature
18°C (64°F)
Max Temperature
31°C (88°F)
Chance of Rain
23%
Precipitation
36 mm (1.4 in)
Rainy days
7 days
Humidity
46%
Sunshine
220 hours
Percentage Sunshine
Brasilia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Brasilia - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Brasilia typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Brasilia in September
Browse day-by-day weather records for Brasilia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Brasilia historical weather extremes in September
According to our 49 years of weather records for Brasilia, the following extremes were recorded between 1976 and 2025.
- The hottest September day on record in Brasilia reached 35°C (95°F) (September 29, 2004).
- The lowest daytime temperature in September was 18°C (64°F), recorded on September 21, 1991.
- The lowest overnight temperature recorded in September was 8°C (46°F) (September 12, 1986).
Best Places in Brazil in September
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Brasilia in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Pack a light rain jacket or compact umbrella for occasional showers. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Brasilia in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Brasilia 3-Day Forecast
More climate data for Brasilia
Temperature Rainfall Sunshine Humidity
See the full Brasilia climate overview or explore weather in Brazil.
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Where to go in September - average daytime high across popular destinations.
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