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September weather forecast in Montevideo

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

31 August, sun

	762 mmHg		80%
	6.2 m/s		+14

31 August, Sunday. day, 16°; night, 10°; rain

1 September, mon

	762 mmHg		81%
	6.3 m/s		+14

1 September, Monday. day, 15°; night, 10°; rain

2 September, tue

	762 mmHg		82%
	6.9 m/s		+14

2 September, Tuesday. day, 15°; night, 10°; overcast

3 September, wed

	763 mmHg		79%
	6.5 m/s		+13

3 September, Wednesday. day, 15°; night, 9°; overcast

4 September, thu

	763 mmHg		78%
	6.6 m/s		+14

4 September, Thursday. day, 15°; night, 9°; rain

5 September, fri

	764 mmHg		77%
	6.4 m/s		+14

5 September, Friday. day, 16°; night, 9°; rain

6 September, sat

	762 mmHg		78%
	6 m/s		+14

6 September, Saturday. day, 18°; night, 9°; clear

7 September, sun

	760 mmHg		81%
	6.1 m/s		+14

7 September, Sunday. day, 17°; night, 11°; rain

8 September, mon

	760 mmHg		81%
	5.7 m/s		+15

8 September, Monday. day, 17°; night, 11°; overcast

9 September, tue

	761 mmHg		79%
	5.8 m/s		+15

9 September, Tuesday. day, 17°; night, 10°; rain

10 September, wed

	761 mmHg		76%
	6.3 m/s		+15

10 September, Wednesday. day, 17°; night, 10°; partly cloudy

11 September, thu

	761 mmHg		77%
	7 m/s		+15

11 September, Thursday. day, 16°; night, 11°; rain

12 September, fri

	762 mmHg		73%
	6 m/s		+15

12 September, Friday. day, 16°; night, 9°; partly cloudy

13 September, sat

	762 mmHg		78%
	6.2 m/s		+15

13 September, Saturday. day, 15°; night, 9°; clear

14 September, sun

	762 mmHg		78%
	6.1 m/s		+15

14 September, Sunday. day, 15°; night, 9°; partly cloudy

15 September, mon

	763 mmHg		77%
	6.3 m/s		+15

15 September, Monday. day, 16°; night, 10°; clear

16 September, tue

	763 mmHg		75%
	6.1 m/s		+15

16 September, Tuesday. day, 17°; night, 10°; clear

17 September, wed

	763 mmHg		76%
	6.1 m/s		+15

17 September, Wednesday. day, 18°; night, 10°; partly cloudy

18 September, thu

	761 mmHg		77%
	6.8 m/s		+15

18 September, Thursday. day, 18°; night, 11°; partly cloudy

19 September, fri

	761 mmHg		77%
	7.3 m/s		+16

19 September, Friday. day, 17°; night, 11°; rain

20 September, sat

	762 mmHg		77%
	5.9 m/s		+15

20 September, Saturday. day, 17°; night, 10°; clear

21 September, sun

	762 mmHg		77%
	6.2 m/s		+15

21 September, Sunday. day, 17°; night, 10°; clear

22 September, mon

	762 mmHg		78%
	6.3 m/s		+15

22 September, Monday. day, 18°; night, 11°; partly cloudy

23 September, tue

	762 mmHg		76%
	6.4 m/s		+16

23 September, Tuesday. day, 17°; night, 11°; overcast

24 September, wed

	763 mmHg		75%
	6.3 m/s		+16

24 September, Wednesday. day, 17°; night, 10°; clear

25 September, thu

	764 mmHg		75%
	5.8 m/s		+16

25 September, Thursday. day, 18°; night, 10°; clear

26 September, fri

	763 mmHg		77%
	6 m/s		+16

26 September, Friday. day, 18°; night, 11°; clear

27 September, sat

	763 mmHg		77%
	6.5 m/s		+16

27 September, Saturday. day, 18°; night, 10°; clear

28 September, sun

	762 mmHg		76%
	6.9 m/s		+15

28 September, Sunday. day, 18°; night, 11°; overcast

29 September, mon

	762 mmHg		77%
	6.2 m/s		+15

29 September, Monday. day, 18°; night, 11°; rain

30 September, tue

	761 mmHg		77%
	6.2 m/s		+15

30 September, Tuesday. day, 19°; night, 11°; partly cloudy

1 October, wed

	760 mmHg		79%
	6.1 m/s		+16

1 October, Wednesday. day, 18°; night, 11°; partly cloudy

2 October, thu

	761 mmHg		79%
	6.6 m/s		+16

2 October, Thursday. day, 17°; night, 11°; rain

3 October, fri

	762 mmHg		78%
	6.7 m/s		+17

3 October, Friday. day, 17°; night, 11°; overcast

4 October, sat

	761 mmHg		79%
	6.6 m/s		+17

4 October, Saturday. day, 18°; night, 12°; rain

Average data for 10 years

Montevideo September

10

sunny days

8

days with precipitation

8

cloudy days

10 sunny days; 8 days with precipitation; 8 cloudy days;

77

%

air humidity

4.5

m/s

WindSE

84

mm of precipitation

(8% of annual average)

+15

°C

Water temperature

air humidity 77%; 84 millimeters of precipitation (8% of annual average); Wind south-easterly 4.5 Meters per second; Water temperature +15°

Weather graphs for September

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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SE

SE

SE

1

Average data for 10 years

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30

Daytime temperature

Night-time temperature

Cities near you

Buenos Aires
Florida
Mar del Plata
Chuy
Santa Teresita
Maldonado
Concordia
La Plata
Pinamar

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Oslo
Yurmala
Palanga
Dublin
Copenhagen

The weather forecast for September 2025 is based on historical data from the past 10 years.

In September, the weather in Montevideo is typically warm. Average daily high temperature in September is about 17 degrees above zero. On average, Montevideo has 10 sunny, 8 rainy, 7 partly cloudy, and 5 cloudy days in September. The rains are usually heavy. September as well as June, July, and August is considered the most uncomfortable time to visit Montevideo.

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