Uruguay (Montevideo)
September
Weather in Uruguay for September 2025
Your guide to Uruguay weather in September - trends and predictions
In general, the average temperature in Uruguay at the beginning of September is 15.3 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18.1 °C by the end of September.
The climate of Uruguay in September is notably wet, with an average of 11 rainy days.
Is September a good time to visit Uruguay? check out the best time to travel to Uruguay page.
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19
Dry days
11
Rainy days
0
Snow days
16°/9°
Temperatures
23 km/h
Avg max wind
75 %
Avg humidity
Uruguay in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  16° | 2  17° | 3 14° | 4  14° | 5  13° | 6 16° | 7  17° |
| 8  16° | 9 19° | 10 20° | 11  18° | 12 14° | 13 16° | 14 14° |
| 15 19° | 16  21° | 17 19° | 18 18° | 19 17° | 20 18° | 21  21° |
| 22 20° | 23 17° | 24 17° | 25 16° | 26  15° | 27 17° | 28 21° |
| 29 22° | 30 19° |
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Temperatures trend during September in Uruguay
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 16° /9° | 0.6 mm | 5 | |
| 2 Sept. | Heavy rain | 17° /9° | 13.1 mm | 5 | |
| 3 Sept. | Heavy rain | 14° /9° | 42.6 mm | 4 | |
| 4 Sept. | Patchy rain possible | 14° /9° | 0.3 mm | 4 | |
| 5 Sept. | Cloudy | 13° /6° | 0 mm | 4 | |
| 6 Sept. | Partly cloudy | 16° /5° | 0 mm | 5 | |
| 7 Sept. | Moderate rain | 17° /11° | 7.2 mm | 5 | |
| 8 Sept. | Overcast | 16° /9° | 0.1 mm | 4 | |
| 9 Sept. | Overcast | 19° /9° | 0 mm | 5 | |
| 10 Sept. | Partly cloudy | 20° /11° | 0.4 mm | 6 | |
| 11 Sept. | Moderate or heavy rain with thunder | 18° /10° | 19.2 mm | 5 | |
| 12 Sept. | Partly cloudy | 14° /8° | 0 mm | 4 | |
| 13 Sept. | Partly cloudy | 16° /7° | 0 mm | 5 | |
| 14 Sept. | Overcast | 14° /6° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 19° /6° | 0 mm | 6 | |
| 16 Sept. | Sunny | 21° /10° | 0 mm | 7 | |
| 17 Sept. | Light rain shower | 19° /10° | 4.8 mm | 5 | |
| 18 Sept. | Patchy rain possible | 18° /10° | 1.2 mm | 5 | |
| 19 Sept. | Partly cloudy | 17° /12° | 3.4 mm | 5 | |
| 20 Sept. | Patchy rain possible | 18° /12° | 0.4 mm | 5 | |
| 21 Sept. | Fog | 21° /12° | 0.2 mm | 6 | |
| 22 Sept. | Patchy rain possible | 20° /12° | 1.6 mm | 5 | |
| 23 Sept. | Patchy rain possible | 17° /11° | 0.5 mm | 5 | |
| 24 Sept. | Mist | 17° /11° | 0 mm | 5 | |
| 25 Sept. | Partly cloudy | 16° /10° | 0 mm | 5 | |
| 26 Sept. | Patchy light rain | 15° /11° | 2.6 mm | 4 | |
| 27 Sept. | Patchy rain possible | 17° /9° | 0.2 mm | 5 | |
| 28 Sept. | Cloudy | 21° /9° | 0 mm | 6 | |
| 29 Sept. | Patchy rain possible | 22° /12° | 0.1 mm | 6 | |
| 30 Sept. | Partly cloudy | 19° /12° | 8 mm | 6 | |
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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.
Uruguay in September - FAQ
What are the expected maximum and minimum temperatures in Uruguay during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Uruguay during September?
Significant rainfall exceeding 176.8 mm is expected in Uruguay during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Uruguay during September?
The average wind speed in Uruguay during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Uruguay in September?
As you prepare for your trip to Uruguay in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Uruguay, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Uruguay
Explore the daily rainfall trends and prepare for Uruguays September weather 💧
UV exposure in Uruguay during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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