(according to the Köppen classification: humid subtropical climate - Cfa), with mild winters (from June to August) and hot summers (from December to March). The rains are well distributed throughout the year, although they slightly increase in spring and autumn.
The city is the capital of Uruguay and is located in the south of the country, at almost 35 degrees south latitude, on the north coast of the River Plate (Río de la Plata), in the part that opens towards the Atlantic Ocean.
all year round, in fact the heat records are around 28/29 °C (82/84 °F) even in winter. Instead, from December to March, in summer, there can be heat waves, in which the temperature reaches or exceeds 35 °C (95 °F). However, due to the sea breeze, the heat is less intense than in the interior of Uruguay. Furthermore, as happens in the rest of the country, the south wind is able to interrupt the hot and sultry periods, bringing pleasant (and sometimes very cool) weather for two or three days.
from the south, during which the temperature can drop to the freezing point or a little below at night, and can remain around 8 °C (46 °F) during the day. Also, fog can sometimes form.
In Montevideo, it almost never snows. The last snowfall occurred on July 13, 1930, during the inaugural match of the FIFA Football Cup.
To visit Montevideo you can choose spring and autumn (in particular, the months of October and April), even though they are quite rainy seasons.
If you want you can also choose the summer, since the city is mitigated by the ocean, however, sometimes it can get very hot. Even in the height of summer, it is advisable to bring a sweatshirt for cooler evenings.
However, the winter is not a prohibitive season, and it rarely gets very cold.
. Here are the average temperatures.
January, the warmest month of the year, is generally a warm to hot month. The average temperature is of
23.2 °C, with a minimum of
18 °C and a maximum of
28.3 °C.

On the coldest nights of the month, the temperature usually drops to around
12 °C. However, it dropped to
9.8 °C in January 2007.

On the warmest days of the month, the temperature usually reaches around
35.5 °C. However, it reached
39 °C in January 2003.

Precipitation amounts to
96.4 mm, distributed over 6 days.
The day lasts on average 14 hours and 10 minutes. So the days are long.

There are on average 9.5 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 61%.
The average wind speed is of
17.7 kph.

The average sea temperature is of
22.9 °C. Therefore, the sea can be considered barely acceptable for swimming.
February is generally a warm to hot month. The average temperature is of
22.7 °C, with a minimum of
17.9 °C and a maximum of
27.5 °C.

On the coldest nights of the month, the temperature usually drops to around
12 °C. However, it dropped to
9.5 °C in February 2019.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37 °C in February 2012.

Precipitation amounts to
103.3 mm, distributed over 7 days.
The day lasts on average 13 hours and 20 minutes.

There are on average 8 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 66%.
The average wind speed is of
17 kph.

The average sea temperature is of
23.1 °C. Therefore, the sea can be considered barely acceptable for swimming.
March is generally a warm month. The average temperature is of
21 °C, with a minimum of
16.5 °C and a maximum of
25.6 °C.

On the coldest nights of the month, the temperature usually drops to around
10 °C. However, it dropped to
7.5 °C in March 2010.

On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
34.2 °C in March 2017.

Precipitation amounts to
111 mm, distributed over 6 days.
The day lasts on average 12 hours and 10 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 68%.
The average wind speed is of
16.6 kph.

The average sea temperature is of
22.2 °C. Therefore, the sea is cool for swimming.
April is generally a very mild month. The average temperature is of
17.8 °C, with a minimum of
13.5 °C and a maximum of
22.1 °C.

On the coldest nights of the month, the temperature usually drops to around
7 °C. However, it dropped to
3.6 °C in April 2012.

On the warmest days of the month, the temperature usually reaches around
28.5 °C. However, it reached
34.8 °C in April 2004.

Precipitation amounts to
112.7 mm, distributed over 7 days.
The day lasts on average 11 hours and 10 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
16.4 kph.

The average sea temperature is of
19.4 °C. Therefore, the sea is very cool for swimming.
May is generally a mild month. The average temperature is of
14.4 °C, with a minimum of
10.4 °C and a maximum of
18.5 °C.

On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
0.1 °C in May 1993.

On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
29.1 °C in May 1997.

Precipitation amounts to
86.3 mm, distributed over 6 days.
The day lasts on average 10 hours and 20 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
15.2 kph.

The average sea temperature is of
16.2 °C. Therefore, the sea is cold for swimming.
June is generally a mild month. The average temperature is of
11.5 °C, with a minimum of
7.6 °C and a maximum of
15.4 °C.

On the coldest nights of the month, the temperature usually drops to around
0.5 °C. However, it dropped to
-1.7 °C in June 2002.

On the warmest days of the month, the temperature usually reaches around
23 °C. However, it reached
30 °C in June 1992.

Precipitation amounts to
91.2 mm, distributed over 7 days.
The day lasts on average 9 hours and 50 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.

There are on average 4.5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
16.2 kph.

The average sea temperature is of
13.2 °C. Therefore, the sea is very cold for swimming.
July, the coldest month of the year, is generally a mild month. The average temperature is of
10.6 °C, with a minimum of
6.7 °C and a maximum of
14.5 °C.

On the coldest nights of the month, the temperature usually drops to around
0 °C. However, it dropped to
-2.5 °C in July 2007.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
28.4 °C in July 1997.

Precipitation amounts to
92.9 mm, distributed over 6 days.
The day lasts on average 10 hours and 5 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
16.9 kph.

The average sea temperature is of
11.3 °C. Therefore, the sea is very cold for swimming.
August is generally a mild month. The average temperature is of
12.4 °C, with a minimum of
8 °C and a maximum of
16.7 °C.

On the coldest nights of the month, the temperature usually drops to around
1.5 °C. However, it dropped to
-1 °C in August 1991.

On the warmest days of the month, the temperature usually reaches around
26 °C. However, it reached
32 °C in August 2002.

Precipitation amounts to
87.3 mm, distributed over 7 days.
The day lasts on average 10 hours and 55 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
17.6 kph.

The average sea temperature is of
11.2 °C. Therefore, the sea is very cold for swimming.
September is generally a mild month. The average temperature is of
13.6 °C, with a minimum of
9.2 °C and a maximum of
18.1 °C.

On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
0.5 °C in September 1994.

On the warmest days of the month, the temperature usually reaches around
27 °C. However, it reached
32 °C in September 1995.

Precipitation amounts to
85.4 mm, distributed over 7 days.
The day lasts on average 11 hours and 55 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 69%.
The average wind speed is of
19.4 kph.

The average sea temperature is of
12.3 °C. Therefore, the sea is very cold for swimming.
October is generally a very mild month. The average temperature is of
16.4 °C, with a minimum of
11.8 °C and a maximum of
20.9 °C.

On the coldest nights of the month, the temperature usually drops to around
5 °C. However, it dropped to
1 °C in October 2011.

On the warmest days of the month, the temperature usually reaches around
29 °C. However, it reached
32.2 °C in October 2014.

Precipitation amounts to
102.3 mm, distributed over 7 days.
The day lasts on average 13 hours and 0 minutes.

There are on average 7.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 67%.
The average wind speed is of
19 kph.

The average sea temperature is of
15.1 °C. Therefore, the sea is cold for swimming.
November is generally a warm month. The average temperature is of
19 °C, with a minimum of
14 °C and a maximum of
24 °C.

On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
1.1 °C in November 1992.

On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
35.4 °C in November 2020.

Precipitation amounts to
94.3 mm, distributed over 7 days.
The day lasts on average 14 hours and 0 minutes.

There are on average 8.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 62%.
The average wind speed is of
18.9 kph.

The average sea temperature is of
18.1 °C. Therefore, the sea is cold for swimming.
December is generally a warm month. The average temperature is of
21.6 °C, with a minimum of
16.3 °C and a maximum of
27 °C.

On the coldest nights of the month, the temperature usually drops to around
10 °C. However, it dropped to
7 °C in December 2010.

On the warmest days of the month, the temperature usually reaches around
34.5 °C. However, it reached
39 °C in December 1995.

Precipitation amounts to
100.7 mm, distributed over 7 days.
The day lasts on average 14 hours and 30 minutes. So the days are long. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.

There are on average 9 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 59%.
The average wind speed is of
18.6 kph.

The average sea temperature is of
20.8 °C. Therefore, the sea is cool for swimming.