September
Weather in South America for September 2025
Your guide to South America weather in September - trends and predictions
In general, the average temperature in South America at the beginning of September is 30 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 32.6 °C by the end of September.
With an average of 3 rainy days, South America experiences minimal rainfall in September.
Temperatures
Rain 🌧️
27
Dry days
3
Rainy days
0
Snow days
31°/19°
Temperatures
19 km/h
Avg max wind
52 %
Avg humidity
South America Weather September
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Temperatures trend during September in South America
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September weather in South America day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 31° /17° | 0 mm | 8 | |
| 2 Sept. |  Partly cloudy | 31° /18° | 0 mm | 9 | |
| 3 Sept. |  Patchy rain possible | 33° /18° | 1.5 mm | 8 | |
| 4 Sept. | Sunny | 35° /20° | 0.1 mm | 9 | |
| 5 Sept. | Light rain shower | 29° /16° | 0.8 mm | 8 | |
| 6 Sept. |  Overcast | 21° /16° | 0.4 mm | 5 | |
| 7 Sept. |  Cloudy | 30° /16° | 0.1 mm | 8 | |
| 8 Sept. | Sunny | 32° /19° | 0 mm | 9 | |
| 9 Sept. | Sunny | 33° /20° | 0 mm | 9 | |
| 10 Sept. | Cloudy | 32° /19° | 0 mm | 8 | |
| 11 Sept. | Sunny | 33° /19° | 0 mm | 9 | |
| 12 Sept. | Sunny | 34° /20° | 0 mm | 9 | |
| 13 Sept. | Sunny | 35° /21° | 0 mm | 9 | |
| 14 Sept. | Partly cloudy | 31° /18° | 0 mm | 9 | |
| 15 Sept. | Overcast | 21° /16° | 0.4 mm | 6 | |
| 16 Sept. | Partly cloudy | 25° /15° | 0.5 mm | 7 | |
| 17 Sept. | Sunny | 26° /18° | 0.6 mm | 7 | |
| 18 Sept. | Sunny | 29° /18° | 0.7 mm | 8 | |
| 19 Sept. | Partly cloudy | 31° /19° | 0.2 mm | 8 | |
| 20 Sept. | Sunny | 34° /19° | 0.1 mm | 9 | |
| 21 Sept. | Sunny | 32° /19° | 0.1 mm | 8 | |
| 22 Sept. | Sunny | 35° /20° | 0 mm | 9 | |
| 23 Sept. | Sunny | 35° /21° | 0 mm | 10 | |
| 24 Sept. | Sunny | 37° /22° | 0 mm | 10 | |
| 25 Sept. | Sunny | 36° /21° | 0 mm | 9 | |
| 26 Sept. | Partly cloudy | 38° /21° | 0 mm | 10 | |
| 27 Sept. | Patchy rain possible | 37° /17° | 0.9 mm | 9 | |
| 28 Sept. | Patchy rain possible | 20° /15° | 0.5 mm | 5 | |
| 29 Sept. | Patchy rain possible | 28° /16° | 0.1 mm | 7 | |
| 30 Sept. | Patchy rain possible | 32° /16° | 1.3 mm | 8 | |
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Important Notice
Our weather forecast for South America 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 South America forecast closer to your planned date for the most up-to-date weather information.
Change Month
South America in September - FAQ
What are the expected maximum and minimum temperatures in South America during September?
Expect warm days with temperatures around 31°, cooling to mild conditions of 19° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in South America during September?
Rainfall in South America during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 3 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 South America during September?
The average wind speed in South America during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in South America
Explore the daily rainfall trends and prepare for South Americas September weather 💧
UV exposure in South America during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
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