Climate - Ushuaia (Argentina)

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Ushuaia's climate is cold oceanic, with cold winters and very cool summers.
The city is located in the far south of Argentina, at 54 degrees south latitude, in Patagonia, on the coast of the Isla Grande (Big Island) of Tierra del Fuego (half of which belongs to Chile), in an inland bay, the Beagle Channel, which resembles a fjord.
The rains are frequent all year round, although they are not abundant.
Snowfalls generally occur from April to November, however, if we exclude some very cold periods from June to August, the temperature generally exceeds freezing during the day, so the snow, even if it had accumulated, melts quite soon.
However, at night it can get cold even in summer.
The nearby mountains are covered with snow from 500/600 meters (1,650/2,000 feet).

Ushuaia - Climate data

The average temperature of the coldest month (June) is of 2.3 °C (36.1 °F), that of the warmest month (January) is of 10.3 °C (50.5 °F). Here are the average temperatures.
Precipitation amounts to 535 millimeters (21.1 inches) per year: so, it is at an intermediate level. It ranges from 35 mm (1.4 in) in the driest months (August, September, October) to 55 mm (2.2 in) in the wettest ones (April, June) Here is the average precipitation.
The sea temperature ranges from 5.5 °C (42 °F) in August, September to 9 °C (48 °F) in February, March. Here are the average sea temperatures.
On average, there are around 1435 sunshine hours per year. Here are the average sunshine hours per day.

Ushuaia - Weather by month

Based on the period 1991-2020

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In January, the warmest month of the year, the weather in Ushuaia is usually mild. The average temperature is of 10.3 °C (51 °F), with a minimum of 6.1 °C (43 °F) and a maximum of 14.4 °C (58 °F).
On the coldest nights of the month, the temperature usually drops to around 2 °C (36 °F). However, it dropped to -1 °C (30.2 °F) in January 1997.
On the warmest days of the month, the temperature usually reaches around 21.5 °C (71 °F). However, it reached 27 °C (80.6 °F) in January 2008.
Precipitation amounts to 50 mm (2 in), distributed over 17 days.
The day lasts on average 16 hours and 30 minutes.
There are on average 5.5 sunshine hours per day. So, the sun shines 33% of the time.
The average humidity is 69%.
The average wind speed is 25 kph (16 mph).
The average sea temperature is of 8.5 °C (47.5 °F). Therefore, the sea is very cold for swimming.

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In February, the weather in Ushuaia is usually mild. The average temperature is of 10.2 °C (50 °F), with a minimum of 6 °C (42.7 °F) and a maximum of 14.4 °C (57.9 °F).
On the coldest nights of the month, the temperature usually drops to around 2 °C (35.5 °F). However, it dropped to -2.3 °C (27.9 °F) in February 1996.
On the warmest days of the month, the temperature usually reaches around 22 °C (71.5 °F). However, it reached 27.5 °C (81.5 °F) in February 2004.
Precipitation amounts to 40 mm (1.6 in), distributed over 14 days.
The day lasts on average 14 hours and 35 minutes.
There are on average 5 sunshine hours per day. So, the sun shines 36% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 23 kph (14 mph).
The average sea temperature is of 9 °C (48 °F). Therefore, the sea is very cold for swimming.

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In March, the weather in Ushuaia is usually mild. The average temperature is of 9.0 °C (48 °F), with a minimum of 5 °C (41.1 °F) and a maximum of 13 °C (55.3 °F).
On the coldest nights of the month, the temperature usually drops to around 1 °C (33.5 °F). However, it dropped to -3.8 °C (25.2 °F) in March 1992.
On the warmest days of the month, the temperature usually reaches around 20 °C (67.5 °F). However, it reached 25 °C (77 °F) in March 2005.
Precipitation amounts to 45 mm (1.8 in), distributed over 15 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 4.5 sunshine hours per day. So, the sun shines 35% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 21 kph (13 mph).
The average sea temperature is of 9 °C (48 °F). Therefore, the sea is very cold for swimming.

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In April, the weather in Ushuaia is usually quite mild. The average temperature is of 6.6 °C (44 °F), with a minimum of 3.1 °C (37.6 °F) and a maximum of 10 °C (50 °F).
On the coldest nights of the month, the temperature usually drops to around -1 °C (30.5 °F). However, it dropped to -4.5 °C (23.9 °F) in April 2016.
On the warmest days of the month, the temperature usually reaches around 16 °C (61 °F). However, it reached 21.6 °C (70.9 °F) in April 2013.
Precipitation amounts to 55 mm (2.2 in), distributed over 16 days.
The day lasts on average 10 hours and 10 minutes.
There are on average 3.5 sunshine hours per day. So, the sun shines 33% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 20 kph (12 mph).
The average sea temperature is of 8 °C (47 °F). Therefore, the sea is very cold for swimming.

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In May, the weather in Ushuaia is usually quite cold. The average temperature is of 4.6 °C (40 °F), with a minimum of 1.7 °C (35 °F) and a maximum of 7.5 °C (45.5 °F).
On the coldest nights of the month, the temperature usually drops to around -2.5 °C (27 °F). However, it dropped to -7.7 °C (18.1 °F) in May 1991.
On the warmest days of the month, the temperature usually reaches around 13.5 °C (56.5 °F). However, it reached 17.5 °C (63.5 °F) in May 1995.
Precipitation amounts to 50 mm (2 in), distributed over 14 days.
The day lasts on average 8 hours and 20 minutes.
There are on average 2 sunshine hours per day. So, the sun shines 26% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 16 kph (10 mph).
The average sea temperature is of 7.5 °C (45.5 °F). Therefore, the sea is very cold for swimming.

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In June, the coldest month of the year, the weather in Ushuaia is usually cold. The average temperature is of 2.3 °C (36 °F), with a minimum of -0.3 °C (31.4 °F) and a maximum of 4.8 °C (40.7 °F).
On the coldest nights of the month, the temperature usually drops to around -5 °C (23 °F). However, it dropped to -13.8 °C (7.2 °F) in June 1992.
On the warmest days of the month, the temperature usually reaches around 10.5 °C (51 °F). However, it reached 15.6 °C (60.1 °F) in June 2013.
Precipitation amounts to 55 mm (2.2 in), distributed over 14 days.
The day lasts on average 7 hours and 20 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 1.5 sunshine hours per day. So, the sun shines 19% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 17 kph (11 mph).
The average sea temperature is of 7 °C (44 °F). Therefore, the sea is very cold for swimming.

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In July, the weather in Ushuaia is usually cold. The average temperature is of 2.3 °C (36 °F), with a minimum of -0.5 °C (31.1 °F) and a maximum of 5 °C (41.1 °F).
On the coldest nights of the month, the temperature usually drops to around -5 °C (23.5 °F). However, it dropped to -12.8 °C (9 °F) in July 1992.
On the warmest days of the month, the temperature usually reaches around 10.5 °C (50.5 °F). However, it reached 17 °C (62.6 °F) in July 2010.
Precipitation amounts to 40 mm (1.6 in), distributed over 15 days.
The day lasts on average 7 hours and 55 minutes.
There are on average 2 sunshine hours per day. So, the sun shines 23% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 18 kph (11 mph).
The average sea temperature is of 6 °C (43 °F). Therefore, the sea is very cold for swimming.

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In August, the weather in Ushuaia is usually cold. The average temperature is of 3.1 °C (38 °F), with a minimum of 0.1 °C (32.1 °F) and a maximum of 6.2 °C (43.2 °F).
On the coldest nights of the month, the temperature usually drops to around -4 °C (25 °F). However, it dropped to -11 °C (12.2 °F) in August 1991.
On the warmest days of the month, the temperature usually reaches around 11 °C (52 °F). However, it reached 17.1 °C (62.8 °F) in August 2003.
Precipitation amounts to 35 mm (1.4 in), distributed over 14 days.
The day lasts on average 9 hours and 35 minutes.
There are on average 2.5 sunshine hours per day. So, the sun shines 28% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 18 kph (11 mph).
The average sea temperature is of 5.5 °C (42.5 °F). Therefore, the sea is very cold for swimming.

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In September, the weather in Ushuaia is usually quite cold. The average temperature is of 4.8 °C (41 °F), with a minimum of 1.2 °C (34.1 °F) and a maximum of 8.5 °C (47.2 °F).
On the coldest nights of the month, the temperature usually drops to around -3 °C (26.5 °F). However, it dropped to -6.5 °C (20.3 °F) in September 2000.
On the warmest days of the month, the temperature usually reaches around 14 °C (57 °F). However, it reached 19.8 °C (67.6 °F) in September 1996.
Precipitation amounts to 35 mm (1.4 in), distributed over 13 days.
The day lasts on average 11 hours and 50 minutes.
There are on average 4 sunshine hours per day. So, the sun shines 35% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 20 kph (12 mph).
The average sea temperature is of 5.5 °C (42 °F). Therefore, the sea is very cold for swimming.

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In October, the weather in Ushuaia is usually quite mild. The average temperature is of 6.8 °C (44 °F), with a minimum of 2.6 °C (36.8 °F) and a maximum of 11 °C (51.7 °F).
On the coldest nights of the month, the temperature usually drops to around -2 °C (29 °F). However, it dropped to -5 °C (23 °F) in October 2013.
On the warmest days of the month, the temperature usually reaches around 16.5 °C (62 °F). However, it reached 23.7 °C (74.7 °F) in October 2015.
Precipitation amounts to 35 mm (1.4 in), distributed over 14 days.
The day lasts on average 14 hours and 0 minutes.
There are on average 5.5 sunshine hours per day. So, the sun shines 38% of the time.
The average humidity is 68%.
The average wind speed is 22 kph (14 mph).
The average sea temperature is of 6 °C (43 °F). Therefore, the sea is very cold for swimming.

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In November, the weather in Ushuaia is usually quite mild. The average temperature is of 8.2 °C (47 °F), with a minimum of 3.8 °C (38.8 °F) and a maximum of 12.5 °C (54.6 °F).
On the coldest nights of the month, the temperature usually drops to around -0.5 °C (31 °F). However, it dropped to -3 °C (26.6 °F) in November 2002.
On the warmest days of the month, the temperature usually reaches around 19 °C (66 °F). However, it reached 26.3 °C (79.3 °F) in November 1992.
Precipitation amounts to 40 mm (1.6 in), distributed over 16 days.
The day lasts on average 16 hours and 5 minutes.
There are on average 6 sunshine hours per day. So, the sun shines 37% of the time.
The average humidity is 68%.
The average wind speed is 24 kph (15 mph).
The average sea temperature is of 6.5 °C (44 °F). Therefore, the sea is very cold for swimming.

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In December, the weather in Ushuaia is usually mild. The average temperature is of 9.4 °C (49 °F), with a minimum of 5.1 °C (41.3 °F) and a maximum of 13.6 °C (56.4 °F).
On the coldest nights of the month, the temperature usually drops to around 1 °C (34 °F). However, it dropped to -1 °C (30.2 °F) in December 2005.
On the warmest days of the month, the temperature usually reaches around 20 °C (67.5 °F). However, it reached 25.3 °C (77.5 °F) in December 1995.
Precipitation amounts to 50 mm (2 in), distributed over 17 days.
The day lasts on average 17 hours and 10 minutes. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 5.5 sunshine hours per day. So, the sun shines 31% of the time.
The average humidity is 69%.
The average wind speed is 25 kph (15 mph).
The average sea temperature is of 7.5 °C (46 °F). Therefore, the sea is very cold for swimming.