September · Brazil
Best time to visit Brasília in September Weather, crowds & prices
Weather in Brasília in September
Average temperature 26°C, 22 mm of rain, about 29 days with 6+ hours of sunshine and 40% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.1/10
Ranked #6 of 12 months
- Avg temp
- 26°C
- Rainfall
- 22 mm
- Humidity
- 40%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Brasília scores 8.1/10 for sightseeing and cultural travel - an above-average month (#6 of 12). Expect around 26°C, 22 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Niemeyer's modernist capital reads clearest in the dry season from May through September, when blue skies frame the planned city's bold geometry.
September in Brasília — reliably good (6th best month)
Days in September average 26°C (79°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
With around 22 mm of rain, any showers tend to pass through rather than settle in; about 29 days with 6+ hours of sunshine and 11.9 hours of daylight fill the rest.
That is 8.1/10 on the same scale — 6th of 12 months, versus 9.8/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, May is materially better in Brasília — 1.7 points higher on the same scale.
Frequently asked
- What is the weather like in Brasília in September?
- In September, Brasília averages 26°C, 22 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 8.1/10.
- Is September a good time to visit Brasília?
- September earns a 8.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Brasília in September?
- Expect about 22 mm of rain in September. Average humidity is 40% and there are about 29 days with 6+ hours of sunshine.
Curated in Brasília
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Brasília, Brazil. Live activities and tours from GetYourGuide, matched to this destination.