Uruguay (Montevideo)
September
Weather in Uruguay for September 2026
Your guide to Uruguay weather in September - trends and predictions
Until now, September 2026 in Uruguay is slightly cooler than the historical average by 1.8 °C.
The forecast for the next days in Uruguay predicts temperatures to be around 19 °C, close to the historical average.
In general, the average temperature in Uruguay at the beginning of September is 14.9 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.6 °C by the end of September.
Uruguay experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 90.5 mm.
Temperatures
Rain 🌧️
24
Dry days
6
Rainy days
0
Snow days
17°/10°
Temperatures
21 km/h
Avg max wind
74 %
Avg humidity
Uruguay Weather September
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What’s the Weather Like in Uruguay This September?
Discover the average temperatures and weather trends across Uruguay’s cities this September.
Temperatures trend during September in Uruguay
See the weather trend as well as the moving average line
September weather in Uruguay day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 17° /10° | 2.7 mm | 5 | |
| 2 Sept. |  Heavy rain | 17° /9° | 13.4 mm | 5 | |
| 3 Sept. | Heavy rain | 15° /9° | 22.5 mm | 4 | |
| 4 Sept. |  Patchy rain possible | 14° /8° | 0.2 mm | 4 | |
| 5 Sept. | Patchy rain possible | 12° /6° | 0.5 mm | 4 | |
| 6 Sept. | Partly cloudy | 13° /4° | 0.3 mm | 4 | |
| 7 Sept. |  Overcast | 16° /6° | 3.6 mm | 5 | |
| 8 Sept. | Overcast | 15° /8° | 0.2 mm | 4 | |
| 9 Sept. | Overcast | 18° /8° | 0.1 mm | 4 | |
| 10 Sept. | Partly cloudy | 20° /10° | 0.7 mm | 6 | |
| 11 Sept. |  Moderate or heavy rain with thunder | 17° /9° | 9.6 mm | 4 | |
| 12 Sept. | Partly cloudy | 15° /8° | 0.5 mm | 4 | |
| 13 Sept. | Partly cloudy | 15° /6° | 0.1 mm | 5 | |
| 14 Sept. | Partly cloudy | 16° /6° | 0.1 mm | 5 | |
| 15 Sept. | Partly cloudy | 18° /7° | 0 mm | 6 | |
| 16 Sept. |  Sunny | 20° /9° | 0 mm | 6 | |
| 17 Sept. | Light rain shower | 21° /9° | 2.4 mm | 5 | |
| 18 Sept. | Patchy rain possible | 20° /11° | 0.6 mm | 4 | |
| 19 Sept. | Overcast | 23° /13° | 0 mm | 7 | |
| 20 Sept. | Patchy rain possible | 20° /12° | 2.1 mm | 4.9 | |
| 21 Sept. | Sunny | 17° /11° | 0.2 mm | 6.5 | |
| 22 Sept. | Overcast | 11° /7° | 0 mm | 4 | |
| 23 Sept. | Overcast | 17° /5° | 0 mm | 5 | |
| 24 Sept. | Overcast | 25° /12° | 0 mm | 8 | |
| 25 Sept. | Overcast | 21° /12° | 0 mm | 6 | |
| 26 Sept. | Sunny | 24° /10° | 0 mm | 7 | |
| 27 Sept. | Overcast | 26° /12° | 0 mm | 8 | |
| 28 Sept. | Overcast | 19° /10° | 0 mm | 6 | |
| 29 Sept. | Overcast | 15° /9° | 0 mm | 6 | |
| 30 Sept. | Overcast | 14° /9° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Uruguay 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 Uruguay forecast closer to your planned date for the most up-to-date weather information.
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Uruguay in September - FAQ
What are the expected maximum and minimum temperatures in Uruguay during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Uruguay during September?
Moderate rainfall is anticipated in Uruguay during September, with a total of 90.5 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Uruguay during September?
The average wind speed in Uruguay during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Uruguay
Explore the daily rainfall trends and prepare for Uruguays September weather 💧
Typically, Uruguay has 6 rainy days in September with a total of 90.5 mm of rainfall.
UV exposure in Uruguay during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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