Climate in Patagonia

Average daytime and nighttime temperatures

All climate diagrams on this site result from the collected data from 26 measuring weather stations in Patagonia.
Weather stations at an altitude above 890m have not been included.
All data correspond to the average monthly values of the last 20 years.

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Patagonia is one of the coldest regions in Argentina with an average daily high temperature of only 18 degrees. Due to the warmer temperatures, the best time for traveling is from December to February. Less attractive are the cold months from May to September.
Overview: Climate in Argentina
Daylengths and sun positions in Argentina
Compare climate with other regions or countries
Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 10 hours per day, January is the sunniest month in the province of Patagonia. In June, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 7 rain days, June offers the most rain days, while January has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 0.9 mm, the least amount of rain falls in January. June, on the other hand, has the most rain.
Relative humidity in %
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture can be physically contained in the air. At high humidity, a person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% feels pleasant. With only 54% humidity on average, it is quite dry in December. The highest value of 78% is experienced here in June.
Absolute humidity in g/m³
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy.
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity, the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Climate charts for other provinces in Argentina

Map of Patagonia

Most important cities in the province »Patagonia«

Alone 3 cities with over 100,000 inhabitants are located here. The province has a west-east extension of about 760 km and over 1850 km from north to south.

It consists of the five regions Chubut, La Pampa, Neuquen, Rio Negro and Santa Cruz.

CityPopulationGeo position
Neuquén242,09238° 57' 6"S68° 3' 33"W
Comodoro Rivadavia140,85045° 51' 51"S67° 29' 48"W
Santa Rosa111,42436° 37' 0"S64° 16' 60"W
San Carlos de Bariloche95,39441° 8' 44"S71° 18' 30"W
Trelew93,44243° 14' 56"S65° 18' 18"W
Río Gallegos85,70051° 37' 21"S69° 13' 5"W
Cipolletti75,07838° 56' 2"S67° 59' 25"W
General Roca73,21239° 1' 60"S67° 34' 60"W
Puerto Madryn64,55542° 46' 9"S65° 2' 19"W
General Pico57,02935° 39' 24"S63° 45' 25"W
Viedma48,94040° 48' 48"S62° 59' 48"W
Cutral-Có47,38038° 56' 3"S69° 13' 50"W
Caleta Olivia36,07746° 26' 21"S67° 31' 41"W
Zapala31,53438° 53' 57"S70° 3' 16"W
Villa Regina31,20939° 6' 0"S67° 4' 0"W
Centenario28,95638° 49' 46"S68° 7' 54"W
Esquel28,48642° 54' 41"S71° 19' 10"W
Rawson26,33543° 18' 1"S65° 6' 8"W
Allen26,08338° 58' 38"S67° 49' 38"W
Plottier25,18638° 58' 0"S68° 13' 60"W
San Martín de los Andes23,51940° 9' 28"S71° 21' 12"W
Cinco Saltos19,81938° 49' 20"S68° 3' 47"W
San Antonio Oeste16,96640° 43' 55"S64° 56' 52"W
El Bolsón15,53741° 57' 38"S71° 32' 0"W
Catriel15,16937° 52' 45"S67° 47' 44"W
Pico Truncado14,98546° 47' 42"S67° 57' 26"W
General Acha12,53637° 22' 37"S64° 36' 16"W
Plaza Huincul12,27338° 55' 34"S69° 12' 31"W
Chos Malal11,72137° 22' 41"S70° 16' 15"W
Junín de los Andes10,59239° 57' 2"S71° 4' 10"W

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants:, United Nations Statistics Division and own research.
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