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Weather in Brasília for September 2025

Your guide to Brasília weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Brasília has been nearly identical to the historical average, with a temperature of 30.8 °C (showing only a slight deviation of -0.5 °C).

  • Expect cooler weather in the next days in Brasília with the forecast suggesting a temperature of 28.8 °C, lower than the historical average.

  • In general, the average temperature in Brasília at the beginning of September is 30.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24 °C by the end of September.

    • Rain 🌧️

  • Precipitation in Brasília during September is a rare event, with an average of fewer than 2 rainy days.

Average dry days
30
Dry days
Average rainy days
0
Rainy days
Average snowy days
0
Snow days
Average temperatures
33°/20°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
27 %
Avg humidity

Brasília Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
30°
2
Sunny
30°
3
Sunny
30°
4
Sunny
30°
5
Sunny
31°
6
Sunny
32°
7
Sunny
31°
8
Sunny
30°
9
Sunny
31°
10
Sunny
32°
11
Sunny
32°
12
Sunny
33°
13
Sunny
33°
14
Sunny
33°
15
Sunny
33°
16
Sunny
32°
17
Sunny
33°
18
Sunny
34°
19
Sunny
33°
20
Sunny
33°
21
Sunny
33°
22
Sunny
35°
23
Patchy rain possible
34°
24
Patchy rain possible
31°
25
Patchy rain possible
23°
26
Heavy rain
16°
27
Moderate rain
16°
28
Partly cloudy
24°
29
Patchy rain possible
26°
30
Sunny
32°

Temperatures trend during September in Brasília

See the weather trend as well as the moving average line

September weather in Brasília day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 30° /18° 0 mm 9
2 Sept. Sunny
Sunny
 30° /18° 0 mm 9
3 Sept. Sunny
Sunny
 30° /17° 0 mm 9
4 Sept. Sunny
Sunny
 30° /18° 0 mm 9
5 Sept. Sunny
Sunny
 31° /18° 0 mm 9
6 Sept. Sunny
Sunny
 32° /20° 0 mm 9
7 Sept. Sunny
Sunny
 31° /20° 0 mm 9
8 Sept. Sunny
Sunny
 30° /18° 0 mm 9
9 Sept. Sunny
Sunny
 31° /17° 0 mm 9
10 Sept. Sunny
Sunny
 32° /19° 0 mm 9
11 Sept. Sunny
Sunny
 32° /20° 0 mm 9
12 Sept. Sunny
Sunny
 33° /20° 0 mm 9
13 Sept. Sunny
Sunny
 33° /20° 0 mm 9
14 Sept. Sunny
Sunny
 33° /21° 0 mm 9
15 Sept. Sunny
Sunny
 33° /20° 0 mm 9
16 Sept. Sunny
Sunny
 32° /21° 0 mm 2.6
17 Sept. Sunny
Sunny
 33° /22° 0 mm 2.6
18 Sept. Sunny
Sunny
 34° /23° 0 mm 2.7
19 Sept. Sunny
Sunny
 33° /22° 0 mm 2.8
20 Sept. Sunny
Sunny
 33° /21° 0 mm 0.7
21 Sept. Sunny
Sunny
 33° /22° 0 mm 8
22 Sept. Sunny
Sunny
 35° /23° 0 mm 8
23 Sept. Patchy rain possible
Patchy rain possible
 34° /20° 0.8 mm 6
24 Sept. Patchy rain possible
Patchy rain possible
 31° /19° 3.9 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 23° /18° 0.6 mm 5
26 Sept. Heavy rain
Heavy rain
 16° /15° 27.2 mm 5
27 Sept. Moderate rain
Moderate rain
 16° /15° 6 mm 5
28 Sept. Partly cloudy
Partly cloudy
 24° /16° 0 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
 26° /17° 0.2 mm 6
30 Sept. Sunny
Sunny
 32° /20° 0 mm 9
Next
Important Notice
Our weather forecast for Brasília in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Brasília forecast closer to your planned date for the most up-to-date weather information.
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Brasília in September - FAQ

What are the expected maximum and minimum temperatures in Brasília during September?
Expect warm days with temperatures around 33°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Brasília during September?
Rainfall in Brasília during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Brasília during September?
The average wind speed in Brasília during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Brasília

Explore the daily rainfall trends and prepare for Brasílias September weather 💧

UV exposure in Brasília during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

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Get accurate weather forecasts for Brasília, located at latitude -15.78 and longitude -47.93. Stay updated with localized weather information tailored for Brasília.

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