(according to the Köppen classification, cold semi-arid or steppe climate - BSk), with mild winters (during which it can get cold at night) and hot summers (but with generally cool nights). The wind blows frequently.
The city is located in central Argentina, in the province of Río Negro, at almost 41 degrees south latitude, about 25 km (15 mi) away from the coast, where the town of El Cóndor is located. Across the Río Negro ("Black River") is the town of Carmen de Patagones.
, in fact, it is exposed both to outbreaks of cold air of Antarctic origin and to invasions of hot air of tropical origin.
, from December to February, it can sometimes get cold at night, while in other circumstances there can be heat waves. The highest recorded temperature was 43.7 °C (110.7 °F), on February 18, 1987. In any case, the wind blows frequently even in this season, moreover, the sea is not warm.
, from June to August, snow is very rare, but at night the temperature can drop below freezing. The lowest recorded temperature was -10.8 °C (12.6 °F), on July 4, 1988.
To visit Viedma you can choose spring and autumn, in October and April, although they are not dry seasons, to avoid both the possible heat of the summer and the possible cold of the winter. However, there are changes in temperature even in these periods.
Summer is the warmest and sunniest season, but it can sometimes get very hot. The sea reaches its highest temperatures from January to March, although it remains cool even in this period.
. Here are the average temperatures.
January, the warmest month of the year, is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
22.2 °C, with a minimum of
14.7 °C and a maximum of
29.7 °C.

On the coldest nights of the month, the temperature usually drops to around
6 °C. However, it dropped to
2.9 °C in January 2013.

On the warmest days of the month, the temperature usually reaches around
38.5 °C. However, it reached
42.7 °C in January 2012.

Precipitation amounts to
30.8 mm, distributed over 3 days.
The day lasts on average 14 hours and 40 minutes. So the days are long.

There are on average 9.5 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 47%.
The average wind speed is of
21.9 kph.

The average sea temperature is of
20.2 °C. Therefore, the sea is very cool for swimming.
February is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
21.2 °C, with a minimum of
14 °C and a maximum of
28.5 °C.

On the coldest nights of the month, the temperature usually drops to around
6 °C. However, it dropped to
2.4 °C in February 1998.

On the warmest days of the month, the temperature usually reaches around
37.5 °C. However, it reached
40.5 °C in February 2013.

Precipitation amounts to
40.3 mm, distributed over 4 days.
The day lasts on average 13 hours and 35 minutes.

There are on average 9 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 52%.
The average wind speed is of
20.7 kph.

The average sea temperature is of
21 °C. Therefore, the sea is cool for swimming.
March is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
19 °C, with a minimum of
12.1 °C and a maximum of
25.9 °C.

On the coldest nights of the month, the temperature usually drops to around
3.5 °C. However, it dropped to
0.5 °C in March 2001.

On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
38.6 °C in March 2020.

Precipitation amounts to
53 mm, distributed over 4 days.
The day lasts on average 12 hours and 20 minutes.

There are on average 9 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 58%.
The average wind speed is of
19.3 kph.

The average sea temperature is of
20.6 °C. Therefore, the sea is cool for swimming.
April is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
14.6 °C, with a minimum of
7.9 °C and a maximum of
21.2 °C.

On the coldest nights of the month, the temperature usually drops to around
0 °C. However, it dropped to
-3.1 °C in April 2010.

On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
34.2 °C in April 2018.

Precipitation amounts to
37.7 mm, distributed over 4 days.
The day lasts on average 10 hours and 55 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 62%.
The average wind speed is of
17.3 kph.

The average sea temperature is of
18.8 °C. Therefore, the sea is very cool for swimming.
May is generally a mild month. The average temperature is of
10.8 °C, with a minimum of
4.9 °C and a maximum of
16.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-2.5 °C. However, it dropped to
-4.9 °C in May 2009.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
29.9 °C in May 2010.

Precipitation amounts to
31.8 mm, distributed over 4 days.
The day lasts on average 9 hours and 50 minutes.

There are on average 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
16.4 kph.

The average sea temperature is of
16.4 °C. Therefore, the sea is cold for swimming.
June is generally a quite mild month. The average temperature is of
8 °C, with a minimum of
2.4 °C and a maximum of
13.5 °C.

On the coldest nights of the month, the temperature usually drops to around
-4.5 °C. However, it dropped to
-7 °C in June 1991.

On the warmest days of the month, the temperature usually reaches around
19.5 °C. However, it reached
23.9 °C in June 2013.

Precipitation amounts to
26.8 mm, distributed over 4 days.
The day lasts on average 9 hours and 20 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.

There are on average 4 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
17.8 kph.

The average sea temperature is of
14 °C. Therefore, the sea is very cold for swimming.
July, the coldest month of the year, is generally a quite mild month. The average temperature is of
7.2 °C, with a minimum of
1.4 °C and a maximum of
13.1 °C.

On the coldest nights of the month, the temperature usually drops to around
-5.5 °C. However, it dropped to
-9.5 °C in July 1995.

On the warmest days of the month, the temperature usually reaches around
19.5 °C. However, it reached
24.2 °C in July 2008.

Precipitation amounts to
29.7 mm, distributed over 4 days.
The day lasts on average 9 hours and 35 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 69%.
The average wind speed is of
17.6 kph.

The average sea temperature is of
12.1 °C. Therefore, the sea is very cold for swimming.
August is generally a mild month. The average temperature is of
9 °C, with a minimum of
2.5 °C and a maximum of
15.4 °C.

On the coldest nights of the month, the temperature usually drops to around
-4.5 °C. However, it dropped to
-7 °C in August 1998.

On the warmest days of the month, the temperature usually reaches around
23.5 °C. However, it reached
28 °C in August 2014.

Precipitation amounts to
24.7 mm, distributed over 3 days.
The day lasts on average 10 hours and 35 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 62%.
The average wind speed is of
18.2 kph.

The average sea temperature is of
11.1 °C. Therefore, the sea is very cold for swimming.
September is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
10.8 °C, with a minimum of
4 °C and a maximum of
17.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-4 °C. However, it dropped to
-6.5 °C in September 2008.

On the warmest days of the month, the temperature usually reaches around
26.5 °C. However, it reached
32.3 °C in September 1996.

Precipitation amounts to
24.3 mm, distributed over 4 days.
The day lasts on average 11 hours and 55 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 59%.
The average wind speed is of
19.1 kph.

The average sea temperature is of
11.3 °C. Therefore, the sea is very cold for swimming.
October is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
14.2 °C, with a minimum of
7 °C and a maximum of
21.4 °C.

On the coldest nights of the month, the temperature usually drops to around
-2 °C. However, it dropped to
-4.6 °C in October 1991.

On the warmest days of the month, the temperature usually reaches around
30.5 °C. However, it reached
35.4 °C in October 1999.

Precipitation amounts to
32.4 mm, distributed over 4 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 54%.
The average wind speed is of
19.6 kph.

The average sea temperature is of
12.8 °C. Therefore, the sea is very cold for swimming.
November is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
17.7 °C, with a minimum of
10.3 °C and a maximum of
25.1 °C.

On the coldest nights of the month, the temperature usually drops to around
1.5 °C. However, it dropped to
-1.8 °C in November 1992.

On the warmest days of the month, the temperature usually reaches around
34.5 °C. However, it reached
39.5 °C in November 1996.

Precipitation amounts to
28.4 mm, distributed over 4 days.
The day lasts on average 14 hours and 30 minutes. So the days are long.

There are on average 9 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 49%.
The average wind speed is of
20.9 kph.

The average sea temperature is of
15.2 °C. Therefore, the sea is cold for swimming.
December is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
20.6 °C, with a minimum of
12.9 °C and a maximum of
28.2 °C.

On the coldest nights of the month, the temperature usually drops to around
4 °C. However, it dropped to
1.4 °C in December 1995.

On the warmest days of the month, the temperature usually reaches around
37 °C. However, it reached
40.2 °C in December 1995.

Precipitation amounts to
23.2 mm, distributed over 3 days.
The day lasts on average 15 hours and 5 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 9.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 45%.
The average wind speed is of
21.9 kph.

The average sea temperature is of
18 °C. Therefore, the sea is cold for swimming.