Argentina (Buenos Aires)
September
Weather in Argentina for September 2026
Your guide to Argentina weather in September - trends and predictions
Tormentas - See hour by hour.
Until now, September 2026 in Argentina is slightly cooler than the historical average by 1.1 °C.
Expect cooler weather in the next days in Argentina with the forecast suggesting a temperature of 18.8 °C, lower than the historical average.
In general, the average temperature in Argentina at the beginning of September is 14.9 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 19.6 °C by the end of September.
Argentina experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 83.3 mm.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
24
Dry days
6
Rainy days
0
Snow days
17°/11°
Temperatures
22 km/h
Avg max wind
72 %
Avg humidity
Argentina Weather September
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What’s the Weather Like in Argentina This September?
Discover the average temperatures and weather trends across Argentina’s cities this September.
Temperatures trend during September in Argentina
See the weather trend as well as the moving average line
September weather in Argentina day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 16° /10° | 3.2 mm | 5 | |
| 2 Sept. |  Heavy rain | 18° /10° | 9.6 mm | 5 | |
| 3 Sept. |  Sunny | 16° /10° | 11.2 mm | 4 | |
| 4 Sept. |  Overcast | 15° /8° | 0 mm | 4 | |
| 5 Sept. | Sunny | 12° /6° | 0 mm | 4 | |
| 6 Sept. | Sunny | 13° /6° | 0 mm | 5 | |
| 7 Sept. | Overcast | 14° /8° | 3.7 mm | 4 | |
| 8 Sept. | Partly cloudy | 15° /9° | 0 mm | 5 | |
| 9 Sept. | Overcast | 17° /10° | 0.2 mm | 4 | |
| 10 Sept. | Sunny | 18° /11° | 0.2 mm | 5 | |
| 11 Sept. |  Moderate or heavy rain shower | 17° /11° | 6.7 mm | 4 | |
| 12 Sept. | Overcast | 14° /9° | 0.1 mm | 4 | |
| 13 Sept. | Partly cloudy | 14° /8° | 0.1 mm | 5 | |
| 14 Sept. | Partly cloudy | 17° /9° | 0.1 mm | 6 | |
| 15 Sept. | Partly cloudy | 19° /10° | 0.1 mm | 5 | |
| 16 Sept. | Sunny | 18° /11° | 0 mm | 6 | |
| 17 Sept. | Sunny | 19° /12° | 2.2 mm | 5 | |
| 18 Sept. | Partly cloudy | 19° /13° | 0.2 mm | 5 | |
| 19 Sept. | Overcast | 20° /14° | 0 mm | 6.7 | |
| 20 Sept. | Overcast | 23° /12° | 2.8 mm | 5.8 | |
| 21 Sept. | Sunny | 18° /11° | 0 mm | 7.3 | |
| 22 Sept. | Overcast | 17° /8° | 0 mm | 6 | |
| 23 Sept. | Overcast | 21° /9° | 0 mm | 6 | |
| 24 Sept. | Sunny | 24° /14° | 0 mm | 7 | |
| 25 Sept. | Overcast | 24° /16° | 0 mm | 6 | |
| 26 Sept. | Sunny | 19° /13° | 0 mm | 6 | |
| 27 Sept. | Overcast | 22° /15° | 0 mm | 7 | |
| 28 Sept. | Overcast | 19° /13° | 0 mm | 6 | |
| 29 Sept. | Overcast | 14° /10° | 0 mm | 5 | |
| 30 Sept. | Overcast | 15° /10° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Argentina 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 Argentina forecast closer to your planned date for the most up-to-date weather information.
Change Month
Argentina in September - FAQ
What are the expected maximum and minimum temperatures in Argentina during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Argentina during September?
Moderate rainfall is anticipated in Argentina during September, with a total of 83.3 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Argentina during September?
The average wind speed in Argentina during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Argentina
Explore the daily rainfall trends and prepare for Argentinas September weather 💧
Typically, Argentina has 6 rainy days in September with a total of 83.3 mm of rainfall.
UV exposure in Argentina during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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