(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 located in southern Uruguay, at nearly 35 degrees south latitude, just east of Montevideo, to which it once belonged. The Carrasco and Pando streams delimit the city to the west and east. East of the Pando stream begins the so-called Costa de Oro.
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.
To visit Ciudad de la Costa 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, muggy month. The average temperature is of
23 °C, with a minimum of
17.6 °C and a maximum of
28.5 °C.

On the coldest nights of the month, the temperature usually drops to around
11 °C. However, it dropped to
12 °C in January 2007.

On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
38 °C in January 2003.

Precipitation amounts to
90 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 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
16.9 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, muggy month. The average temperature is of
22.6 °C, with a minimum of
17.5 °C and a maximum of
27.7 °C.

On the coldest nights of the month, the temperature usually drops to around
10.5 °C. However, it dropped to
11.5 °C in February 2019.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
39 °C in February 2003.

Precipitation amounts to
85 mm, distributed over 6 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 60% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
16.5 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
15.9 °C and a maximum of
26 °C.

On the coldest nights of the month, the temperature usually drops to around
9.5 °C. However, it dropped to
6.3 °C in March 1997.

On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
35.2 °C in March 2006.

Precipitation amounts to
130 mm, distributed over 7 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 58% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
15.2 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
17.9 °C, with a minimum of
12.9 °C and a maximum of
22.8 °C.

On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
2.9 °C in April 2012.

On the warmest days of the month, the temperature usually reaches around
29 °C. However, it reached
35 °C in April 2004.

Precipitation amounts to
115 mm, distributed over 6 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 53% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
15 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
9.7 °C and a maximum of
19.1 °C.

On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
0.6 °C in May 2011.

On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
30 °C in May 2015.

Precipitation amounts to
95 mm, distributed over 7 days.
The day lasts on average 10 hours and 20 minutes.

There are on average 5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
13.9 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
11.6 °C, with a minimum of
6.7 °C and a maximum of
16.4 °C.

On the coldest nights of the month, the temperature usually drops to around
-0.5 °C. However, it dropped to
-4 °C in June 1995.

On the warmest days of the month, the temperature usually reaches around
23 °C. However, it reached
28.2 °C in June 2006.

Precipitation amounts to
100 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 81%. Hence, the air is normally humid.
The average wind speed is of
14.7 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
10.7 °C, with a minimum of
5.8 °C and a maximum of
15.5 °C.

On the coldest nights of the month, the temperature usually drops to around
-0.5 °C. However, it dropped to
-3.1 °C in July 1996.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
28.6 °C in July 1997.

Precipitation amounts to
80 mm, distributed over 8 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 46% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
15.4 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
7.1 °C and a maximum of
17.6 °C.

On the coldest nights of the month, the temperature usually drops to around
0.5 °C. However, it dropped to
-2 °C in August 1992.

On the warmest days of the month, the temperature usually reaches around
26.5 °C. However, it reached
33.2 °C in August 2002.

Precipitation amounts to
85 mm, distributed over 6 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 78%. Hence, the air is normally humid.
The average wind speed is of
15.6 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
13.7 °C, with a minimum of
8.7 °C and a maximum of
18.6 °C.

On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-1 °C in September 1995.

On the warmest days of the month, the temperature usually reaches around
26.5 °C. However, it reached
32 °C in September 2013.

Precipitation amounts to
90 mm, distributed over 6 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 76%. Hence, the air is normally humid.
The average wind speed is of
17.2 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
16.3 °C, with a minimum of
11.4 °C and a maximum of
21.3 °C.

On the coldest nights of the month, the temperature usually drops to around
4.5 °C. However, it dropped to
1 °C in October 1999.

On the warmest days of the month, the temperature usually reaches around
29 °C. However, it reached
33.6 °C in October 2006.

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

There are on average 7 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
17.2 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
18.9 °C, with a minimum of
13.3 °C and a maximum of
24.4 °C.

On the coldest nights of the month, the temperature usually drops to around
6.5 °C. However, it dropped to
5 °C in November 2007.

On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
36 °C in November 2020.

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

There are on average 8 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
17.6 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
15.9 °C and a maximum of
27.3 °C.

On the coldest nights of the month, the temperature usually drops to around
9 °C. However, it dropped to
6 °C in December 1995.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
39.8 °C in December 2013.

Precipitation amounts to
80 mm, distributed over 6 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 8.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 69%.
The average wind speed is of
17.2 kph.

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