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Weather in Montevideo for September 2026

Your guide to Montevideo weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Montevideo at the beginning of September is 15.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Montevideo in September is notably wet, with an average of 12 rainy days, and a total of 90.5 mm of precipitation.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/10°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Montevideo Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
17°
2
Heavy rain
16°
3
Heavy rain
15°
4
Patchy rain possible
14°
5
Cloudy
12°
6
Partly cloudy
15°
7
Overcast
17°
8
Overcast
15°
9
Overcast
18°
10
Partly cloudy
21°
11
Moderate or heavy rain with thunder
18°
12
Partly cloudy
15°
13
Partly cloudy
17°
14
Partly cloudy
16°
15
Partly cloudy
19°
16
Sunny
22°
17
Light rain shower
20°
18
Patchy rain possible
19°
19
Partly cloudy
19°
20
Patchy rain possible
18°
21
Fog
20°
22
Light rain shower
18°
23
Patchy rain possible
16°
24
Mist
16°
25
Partly cloudy
17°
26
Patchy light rain
17°
27
Patchy rain possible
16°
28
Cloudy
20°
29
Cloudy
22°
30
Partly cloudy
20°

Temperatures trend during September in Montevideo

See the weather trend as well as the moving average line

September weather in Montevideo day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 17° /10° 3.6 mm 5
2 Sept. Heavy rain
Heavy rain
 16° /9° 17.9 mm 5
3 Sept. Heavy rain
Heavy rain
 15° /9° 28.4 mm 4
4 Sept. Patchy rain possible
Patchy rain possible
 14° /8° 0.2 mm 4
5 Sept. Cloudy
Cloudy
 12° /6° 0 mm 4
6 Sept. Partly cloudy
Partly cloudy
 15° /4° 0 mm 5
7 Sept. Overcast
Overcast
 17° /8° 4.8 mm 5
8 Sept. Overcast
Overcast
 15° /9° 0.2 mm 4
9 Sept. Overcast
Overcast
 18° /9° 0 mm 5
10 Sept. Partly cloudy
Partly cloudy
 21° /10° 0.3 mm 6
11 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 18° /10° 12.8 mm 5
12 Sept. Partly cloudy
Partly cloudy
 15° /8° 0 mm 5
13 Sept. Partly cloudy
Partly cloudy
 17° /7° 0 mm 5
14 Sept. Partly cloudy
Partly cloudy
 16° /8° 0 mm 5
15 Sept. Partly cloudy
Partly cloudy
 19° /8° 0 mm 6
16 Sept. Sunny
Sunny
 22° /10° 0 mm 6
17 Sept. Light rain shower
Light rain shower
 20° /10° 3.2 mm 5
18 Sept. Patchy rain possible
Patchy rain possible
 19° /11° 0.8 mm 5
19 Sept. Partly cloudy
Partly cloudy
 19° /13° 3.8 mm 5
20 Sept. Patchy rain possible
Patchy rain possible
 18° /13° 2.9 mm 5
21 Sept. Fog
Fog
 20° /11° 0.4 mm 5
22 Sept. Light rain shower
Light rain shower
 18° /11° 1.3 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 0.4 mm 4
24 Sept. Mist
Mist
 16° /10° 0 mm 5
25 Sept. Partly cloudy
Partly cloudy
 17° /8° 0 mm 5
26 Sept. Patchy light rain
Patchy light rain
 17° /10° 1.8 mm 5
27 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 2.5 mm 5
28 Sept. Cloudy
Cloudy
 20° /10° 0.1 mm 5
29 Sept. Cloudy
Cloudy
 22° /11° 0 mm 6
30 Sept. Partly cloudy
Partly cloudy
 20° /12° 5.3 mm 6
Next
Important Notice
Our weather forecast for Montevideo 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 Montevideo forecast closer to your planned date for the most up-to-date weather information.
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Montevideo in September - FAQ

What are the expected maximum and minimum temperatures in Montevideo 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 Montevideo during September?

Moderate rainfall is anticipated in Montevideo during September, with a total of 90.5 mm spread over approximately 12 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Montevideo during September?

The average wind speed in Montevideo during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Montevideo

Explore the daily rainfall trends and prepare for Montevideos September weather 💧
Typically, Montevideo has 12 rainy days in September with a total of 90.5 mm of rainfall.

UV exposure in Montevideo during September

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

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Location coordinates Where is Montevideo?

Get accurate weather forecasts for Montevideo, located at latitude -34.903 and longitude -56.188. Stay updated with localized weather information tailored for Montevideo.

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