Climate in Santa Rosa (Argentina)

The climate of Santa Rosa is subtropical (according to the Köppen classification, humid subtropical climate - Cfa), with mild, dry winters and hot, rainy summers. The temperatures are similar to those of the Mediterranean climate, but the rainfall pattern is opposite, in addition, the differences between night and day are greater, plus, both the wind and the temperature changes are stronger and more frequent.
The city, formerly known as Santa Rosa de Toay, is the capital of the province of La Pampa and is located in central Argentina, at 36 degrees south latitude and 550 km (340 mi) southwest of Buenos Aires.
Santa Rosa is located in the western part of the so-called "Humid Pampas", not far from the conventional border with the "Dry Pampas", which is located further southwest, and receives less than 600 mm (23.5 in) of rain per year.



Winter, from mid-May to mid-August, is mild and quite sunny, with rare and not abundant rains.
In periods of good weather, fog can form, but it rarely lasts until the central hours of the day.
The days are often very mild, however, at night the temperature drops significantly, and during some periods it drops below freezing. During the most intense cold spells, the temperature can drop to about -10 °C (14 °F). The record is -12.7 °C (9.1 °F), set in June 1967.
Snow in Santa Rosa is extremely rare. On the morning of August 19, 2019, there was a snowfall that produced a light blanket, something that had not happened in more than 40 years. To give an indication of the instability of this climate, it can be remembered that ten days later the temperature reached 32 °C.

Summer, from December to February, is hot and sunny, although nights are usually quite cool, in addition, it is the rainiest season, mainly due to thunderstorms.
There can be short cool periods, in which it can also get a little cold at night. However, in other circumstances there can be heat waves, in which the temperature can reach 40 °C (104 °F). The record is 45.7 °C (114.3 °F), set in January 1955. In January 2014, the temperature reached 44.9 °C (112.8 °F), and the average maximum was 35.5 °C (96 °F).

Best Time

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It is difficult to find the best time to visit Santa Rosa, since at night, it can get cold all year round (but especially in winter), while during the day, it can get very hot all year round except in winter. However, you can choose the months of April and October.

Santa Rosa - Climate data

In Santa Rosa, the average temperature of the coldest month (July) is of 8.3 °C (46.9 °F), that of the warmest month (January) is of 24 °C (75.2 °F). Here are the average temperatures.
Precipitation amounts to 755 millimeters (29.7 inches) per year: so, it is at an intermediate level. It ranges from 17.3 mm (0.7 in) in the driest month (June) to 99 mm (3.9 in) in the wettest one (March). Here is the average precipitation.
There are on average around 2545 sunshine hours per year. Here are the average hours of sunshine per day.

Santa Rosa - Weather by month

Based on the period 1991-2020

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January, the warmest month of the year, is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 24 °C (75 °F), with a minimum of 16.5 °C (61.7 °F) and a maximum of 31.5 °C (88.7 °F).
On the coldest nights of the month, the temperature usually drops to around 9 °C (48.5 °F). However, it dropped to 5.8 °C (42.4 °F) in January 1991.
On the warmest days of the month, the temperature usually reaches around 38 °C (101 °F). However, it reached 44.9 °C (112.8 °F) in January 2014.
Precipitation amounts to 95.3 mm (3.8 in), distributed over 7 days.
The day lasts on average 14 hours and 20 minutes. So the days are long.
There are on average 10 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 54%.
The average wind speed is 14 kph (9 mph).

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February is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 22.5 °C (73 °F), with a minimum of 15.2 °C (59.4 °F) and a maximum of 29.9 °C (85.8 °F).
On the coldest nights of the month, the temperature usually drops to around 7.5 °C (45.5 °F). However, it dropped to 3.8 °C (38.8 °F) in February 1996.
On the warmest days of the month, the temperature usually reaches around 37 °C (99 °F). However, it reached 40.6 °C (105.1 °F) in February 2018.
Precipitation amounts to 88.3 mm (3.5 in), distributed over 6 days.
The day lasts on average 13 hours and 25 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 59%.
The average wind speed is 13 kph (8 mph).

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March is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 20.4 °C (69 °F), with a minimum of 13.4 °C (56.1 °F) and a maximum of 27.3 °C (81.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 5 °C (41 °F). However, it dropped to 0.3 °C (32.5 °F) in March 1998.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 34.5 °C (94.5 °F). However, it reached 39.7 °C (103.5 °F) in March 2003.
Precipitation amounts to 99 mm (3.9 in), distributed over 6 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 64%.
The average wind speed is 13 kph (8 mph).

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April is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 16.1 °C (61 °F), with a minimum of 9.5 °C (49.1 °F) and a maximum of 22.7 °C (72.9 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 1 °C (34 °F). However, it dropped to -3 °C (26.6 °F) in April 2008.
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 35.9 °C (96.6 °F) in April 2009.
Precipitation amounts to 63.8 mm (2.5 in), distributed over 5 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 66%.
The average wind speed is 12 kph (7 mph).

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May is generally a mild month. The average temperature is of 12.1 °C (54 °F), with a minimum of 6.1 °C (43 °F) and a maximum of 18.2 °C (64.8 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -2.5 °C (28 °F). However, it dropped to -8.1 °C (17.4 °F) in May 2007.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 26 °C (78.5 °F). However, it reached 31.3 °C (88.3 °F) in May 2010.
Precipitation amounts to 32.1 mm (1.3 in), distributed over 3 days.
The day lasts on average 10 hours and 10 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

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June is generally a mild month. The average temperature is of 9 °C (48 °F), with a minimum of 3 °C (37.4 °F) and a maximum of 15.1 °C (59.2 °F).
On the coldest nights, the temperature usually drops to around -4 °C (24.5 °F). However, it dropped to -8.9 °C (16 °F) in June 2002.
On the warmest days, the temperature usually reaches around 21.5 °C (71 °F). However, it reached 26.8 °C (80.2 °F) in June 2013.
Precipitation amounts to 17.3 mm (0.7 in), distributed over 2 days.
The day lasts on average 9 hours and 40 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 46% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

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July, the coldest month of the year, is generally a quite mild month. The average temperature is of 8.3 °C (47 °F), with a minimum of 2.1 °C (35.8 °F) and a maximum of 14.5 °C (58.1 °F).
On the coldest nights of the month, the temperature usually drops to around -5.5 °C (22.5 °F). However, it dropped to -10.9 °C (12.4 °F) in July 2007.
On the warmest days of the month, the temperature usually reaches around 22.5 °C (72 °F). However, it reached 26.7 °C (80.1 °F) in July 2008.
Precipitation amounts to 18.8 mm (0.7 in), distributed over 3 days.
The day lasts on average 9 hours and 55 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 67%.
The average wind speed is 11 kph (7 mph).

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August is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 10.6 °C (51 °F), with a minimum of 3.5 °C (38.3 °F) and a maximum of 17.6 °C (63.7 °F).
On the coldest nights of the month, the temperature usually drops to around -4.5 °C (24.5 °F). However, it dropped to -9.2 °C (15.4 °F) in August 2010.
On the warmest days of the month, the temperature usually reaches around 27 °C (80.5 °F). However, it reached 33.8 °C (92.8 °F) in August 2013.
Precipitation amounts to 26.9 mm (1.1 in), distributed over 2 days.
The day lasts on average 10 hours and 50 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 58%.
The average wind speed is 13 kph (8 mph).

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September is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 13.1 °C (56 °F), with a minimum of 5.9 °C (42.6 °F) and a maximum of 20.3 °C (68.5 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -2.5 °C (28 °F). However, it dropped to -6.9 °C (19.6 °F) in September 2019.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 28.5 °C (83.5 °F). However, it reached 34.4 °C (93.9 °F) in September 2013.
Precipitation amounts to 49.7 mm (2 in), distributed over 4 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 50% of the time.
The average humidity is 56%.
The average wind speed is 14 kph (9 mph).

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October is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 16.1 °C (61 °F), with a minimum of 9.2 °C (48.6 °F) and a maximum of 23 °C (73.4 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 2 °C (35.5 °F). However, it dropped to -1.8 °C (28.8 °F) in October 1991.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 31.5 °C (88.5 °F). However, it reached 36 °C (96.8 °F) in October 2003.
Precipitation amounts to 90.2 mm (3.6 in), distributed over 6 days.
The day lasts on average 13 hours and 5 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 58%.
The average wind speed is 15 kph (9 mph).

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November is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.8 °C (68 °F), with a minimum of 12.4 °C (54.3 °F) and a maximum of 27.1 °C (80.8 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 5 °C (41 °F). However, it dropped to -1.2 °C (29.8 °F) in November 1992.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 34.5 °C (94 °F). However, it reached 39.1 °C (102.4 °F) in November 1994.
Precipitation amounts to 75.9 mm (3 in), distributed over 6 days.
The day lasts on average 14 hours and 5 minutes. So the days are long.
There are on average 9.5 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 53%.
The average wind speed is 15 kph (9 mph).

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December is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 22.8 °C (73 °F), with a minimum of 15.2 °C (59.4 °F) and a maximum of 30.3 °C (86.5 °F).
On the coldest nights of the month, the temperature usually drops to around 7 °C (45 °F). However, it dropped to 2 °C (35.6 °F) in December 2001.
On the warmest days of the month, the temperature usually reaches around 37.5 °C (99 °F). However, it reached 41.4 °C (106.5 °F) in December 2017.
Precipitation amounts to 96.1 mm (3.8 in), distributed over 7 days.
The day lasts on average 14 hours and 35 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 66% of the time.
The average humidity is 50%.
The average wind speed is 15 kph (9 mph).