Climate - Viedma (Argentina)

The climate of Viedma is subtropical semi-arid, 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.
Even though it is located near the coast, the city is is subject to sudden changes in temperature, in fact, it is exposed both to outbreaks of cold air of Antarctic origin and to invasions of hot air of tropical origin.
In summer, 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.
In winter, 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.

Best Time

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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.

Viedma - Climate data

In Viedma, the average temperature of the coldest month (July) is of 7.3 °C (45.1 °F), that of the warmest month (January) is of 22.9 °C (73.2 °F). Here are the average temperatures.
In Viedma, precipitation amounts to 375 millimeters (14.8 inches) per year: it is therefore quite scarce. It ranges from 20 mm (0.8 in) in the driest months (August, December) to 55 mm (2.2 in) in the wettest one (March). Here is the average precipitation.
At Viedma, the sea temperature ranges from 11 °C (52 °F) in August to 21 °C (70 °F) in February. Here are the average sea temperatures.
In Viedma, there are on average around 2620 sunshine hours per year. Here are the average hours of sunshine per day.

Viedma - Weather by month

Based on the period 1991-2020

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In January, the warmest month of the year, the weather in Viedma is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 22.9 °C (73 °F), with a minimum of 14.8 °C (58.6 °F) and a maximum of 30.9 °C (87.7 °F).
On the coldest nights of the month, the temperature usually drops to around 6 °C (43 °F). However, it dropped to 2.9 °C (37.2 °F) in January 2013.
On the warmest days of the month, the temperature usually reaches around 38.5 °C (101.5 °F). However, it reached 42.7 °C (108.9 °F) in January 2012.
Precipitation amounts to 30 mm (1.2 in), distributed over 5 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 22 kph (14 mph).
The average sea temperature is of 20 °C (68.5 °F). Therefore, the sea is very cool for swimming.

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In February, the weather in Viedma is usually warm. However, there are remarkable differences between night and day. The average temperature is of 22.0 °C (72 °F), with a minimum of 14.2 °C (57.6 °F) and a maximum of 29.8 °C (85.6 °F).
On the coldest nights of the month, the temperature usually drops to around 6 °C (42.5 °F). However, it dropped to 2.4 °C (36.3 °F) in February 1998.
On the warmest days of the month, the temperature usually reaches around 37.5 °C (99.5 °F). However, it reached 40.5 °C (104.9 °F) in February 2013.
Precipitation amounts to 45 mm (1.8 in), distributed over 6 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 21 kph (13 mph).
The average sea temperature is of 21 °C (70 °F). Therefore, the sea is cool for swimming.

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In March, the weather in Viedma is usually warm. However, there are remarkable differences between night and day. The average temperature is of 19.6 °C (67 °F), with a minimum of 12.2 °C (53.9 °F) and a maximum of 27.1 °C (80.8 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 3.5 °C (38 °F). However, it dropped to 0.5 °C (32.9 °F) in March 2001.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 35 °C (95 °F). However, it reached 38.6 °C (101.5 °F) in March 2020.
Precipitation amounts to 55 mm (2.2 in), distributed over 6 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 19 kph (12 mph).
The average sea temperature is of 20.5 °C (69 °F). Therefore, the sea is cool for swimming.

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In April, the weather in Viedma is usually very mild. However, there are remarkable differences between night and day. The average temperature is of 14.9 °C (59 °F), with a minimum of 7.7 °C (45.9 °F) and a maximum of 22.2 °C (71.9 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 0 °C (32 °F). However, it dropped to -3.1 °C (26.4 °F) in April 2010.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 29.5 °C (85.5 °F). However, it reached 34.2 °C (93.6 °F) in April 2018.
Precipitation amounts to 40 mm (1.6 in), distributed over 6 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 17 kph (11 mph).
The average sea temperature is of 19 °C (66 °F). Therefore, the sea is very cool for swimming.

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In May, the weather in Viedma is usually mild. The average temperature is of 10.9 °C (52 °F), with a minimum of 4.5 °C (40 °F) and a maximum of 17.4 °C (63.4 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -2.5 °C (27.5 °F). However, it dropped to -4.9 °C (23.2 °F) in May 2009.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 24 °C (75.5 °F). However, it reached 29.9 °C (85.8 °F) in May 2010.
Precipitation amounts to 30 mm (1.2 in), distributed over 7 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 16 kph (10 mph).
The average sea temperature is of 16.5 °C (61.5 °F). Therefore, the sea is cold for swimming.

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In June, the weather in Viedma is usually quite mild. The average temperature is of 8.0 °C (46 °F), with a minimum of 1.9 °C (35.4 °F) and a maximum of 14.2 °C (57.5 °F).
On the coldest nights, the temperature usually drops to around -4.5 °C (23.5 °F). However, it dropped to -7 °C (19.4 °F) in June 1991.
On the warmest days, the temperature usually reaches around 19.5 °C (67 °F). However, it reached 23.9 °C (75 °F) in June 2013.
Precipitation amounts to 25 mm (1 in), distributed over 8 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 18 kph (11 mph).
The average sea temperature is of 14 °C (57 °F). Therefore, the sea is very cold for swimming.

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In July, the coldest month of the year, the weather in Viedma is usually quite mild. However, there are remarkable differences between night and day. The average temperature is of 7.3 °C (45 °F), with a minimum of 0.7 °C (33.3 °F) and a maximum of 13.8 °C (56.8 °F).
On the coldest nights of the month, the temperature usually drops to around -5.5 °C (22 °F). However, it dropped to -9.5 °C (14.9 °F) in July 1995.
On the warmest days of the month, the temperature usually reaches around 19.5 °C (67.5 °F). However, it reached 24.2 °C (75.6 °F) in July 2008.
Precipitation amounts to 25 mm (1 in), distributed over 7 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 18 kph (11 mph).
The average sea temperature is of 12 °C (54 °F). Therefore, the sea is very cold for swimming.

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In August, the weather in Viedma is usually mild. However, there are remarkable differences between night and day. The average temperature is of 9.1 °C (48 °F), with a minimum of 2 °C (35.6 °F) and a maximum of 16.2 °C (61.2 °F).
On the coldest nights of the month, the temperature usually drops to around -4.5 °C (23.5 °F). However, it dropped to -7 °C (19.4 °F) in August 1998.
On the warmest days of the month, the temperature usually reaches around 23.5 °C (74 °F). However, it reached 28 °C (82.4 °F) in August 2014.
Precipitation amounts to 20 mm (0.8 in), distributed over 6 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 18 kph (11 mph).
The average sea temperature is of 11 °C (52 °F). Therefore, the sea is very cold for swimming.

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In September, the weather in Viedma is usually mild. However, there are remarkable differences between night and day. The average temperature is of 11.3 °C (52 °F), with a minimum of 4 °C (39.2 °F) and a maximum of 18.7 °C (65.6 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -4 °C (25 °F). However, it dropped to -6.5 °C (20.3 °F) in September 2008.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 26.5 °C (79.5 °F). However, it reached 32.3 °C (90.1 °F) in September 1996.
Precipitation amounts to 25 mm (1 in), distributed over 6 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 19 kph (12 mph).
The average sea temperature is of 11.5 °C (52.5 °F). Therefore, the sea is very cold for swimming.

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In October, the weather in Viedma is usually very mild. However, there are remarkable differences between night and day. The average temperature is of 14.9 °C (59 °F), with a minimum of 7.3 °C (45.1 °F) and a maximum of 22.5 °C (72.6 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -2 °C (28.5 °F). However, it dropped to -4.6 °C (23.7 °F) in October 1991.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 30.5 °C (87 °F). However, it reached 35.4 °C (95.7 °F) in October 1999.
Precipitation amounts to 30 mm (1.2 in), 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 54%.
The average wind speed is 20 kph (12 mph).
The average sea temperature is of 13 °C (55 °F). Therefore, the sea is very cold for swimming.

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In November, the weather in Viedma is usually warm. However, there are remarkable differences between night and day. The average temperature is of 18.4 °C (65 °F), with a minimum of 10.5 °C (50.9 °F) and a maximum of 26.3 °C (79.3 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 1.5 °C (35 °F). However, it dropped to -1.8 °C (28.8 °F) in November 1992.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 34.5 °C (94 °F). However, it reached 39.5 °C (103.1 °F) in November 1996.
Precipitation amounts to 25 mm (1 in), distributed over 5 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 21 kph (13 mph).
The average sea temperature is of 15 °C (59.5 °F). Therefore, the sea is cold for swimming.

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In December, the weather in Viedma is usually warm. However, there are remarkable differences between night and day. The average temperature is of 21.2 °C (70 °F), with a minimum of 13.1 °C (55.5 °F) and a maximum of 29.4 °C (84.8 °F).
On the coldest nights of the month, the temperature usually drops to around 4 °C (39.5 °F). However, it dropped to 1.4 °C (34.5 °F) in December 1995.
On the warmest days of the month, the temperature usually reaches around 37 °C (98.5 °F). However, it reached 40.2 °C (104.4 °F) in December 1995.
Precipitation amounts to 20 mm (0.8 in), distributed over 5 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 22 kph (14 mph).
The average sea temperature is of 18 °C (64.5 °F). Therefore, the sea is cold for swimming.