Climate in Arequipa (Peru)

In Arequipa, there is a subtropical desert mountain climate, with a bit rain from January to March, and very rare or completely absent rains in the rest of the year. Daytime temperatures are mild and stable throughout the year, while nighttime temperatures decrease from May to September, the austral winter, when they become cold enough.
The city is located in southern Peru, at 16 degrees south latitude, at 2,300 meters (7,545 feert) above sea level, on the western side of the Andes and about 85 km (52 mi) from the Pacific Ocean. A little to the north are some volcanoes, including Chachani, 6,057 meters (19,872 feet) high, Pichu Pichu and Misti.
The sun shines very often, especially in the long dry period.

Arequipa - Climate data

In Arequipa, the average temperature of the coldest month (July) is of 14.5 °C (58.2 °F), that of the warmest month (April) is of 15.8 °C (60.5 °F). Here are the average temperatures.
Precipitation amounts to 95 millimeters (3.7 inches) per year: it is therefore at a desert level. It ranges from 0 mm (0 in) in the driest months (May, June, July, October) to 35 mm (1.4 in) in the wettest one (February). Here is the average precipitation.
There are on average around 3335 sunshine hours per year. Here are the average hours of sunshine per day.

Arequipa - Weather by month

Based on the period 1991-2020

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January is generally a very mild month. The average temperature is of 15.8 °C (60 °F), with a minimum of 10.4 °C (50.7 °F) and a maximum of 21.1 °C (70.1 °F).
On the coldest nights of the month, the temperature usually drops to around 7.5 °C (45 °F). However, it dropped to 4.2 °C (39.6 °F) in January 1991.
On the warmest days of the month, the temperature usually reaches around 24 °C (75.5 °F). However, it reached 29.5 °C (85.1 °F) in January 2001.
Precipitation amounts to 30 mm (1.2 in), distributed over 8 days.
The day lasts on average 13 hours and 0 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 64%.
The average wind speed is 10 kph (6 mph).

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February is generally a very mild month. The average temperature is of 15.7 °C (60 °F), with a minimum of 10.5 °C (50.9 °F) and a maximum of 20.9 °C (69.5 °F).
On the coldest nights of the month, the temperature usually drops to around 8 °C (46.5 °F). However, it dropped to 6.2 °C (43.2 °F) in February 1992.
On the warmest days of the month, the temperature usually reaches around 24.5 °C (75.5 °F). However, it reached 29.7 °C (85.5 °F) in February 2016.
Precipitation amounts to 35 mm (1.4 in), distributed over 9 days.
The day lasts on average 12 hours and 35 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 69%.
The average wind speed is 10 kph (6 mph).

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March is generally a very mild month. The average temperature is of 15.8 °C (60 °F), with a minimum of 10.2 °C (50.4 °F) and a maximum of 21.3 °C (70.3 °F).
On the coldest nights, the temperature usually drops to around 8 °C (46 °F). However, it dropped to 5.2 °C (41.4 °F) in March 2011.
On the warmest days, the temperature usually reaches around 23 °C (73 °F). However, it reached 26.6 °C (79.9 °F) in March 1993.
Precipitation amounts to 20 mm (0.8 in), distributed over 6 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 65%.
The average wind speed is 10 kph (6 mph).

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April, the warmest month of the year, is generally a very mild month. The average temperature is of 15.8 °C (60 °F), with a minimum of 9.6 °C (49.3 °F) and a maximum of 22 °C (71.7 °F).
On the coldest nights, the temperature usually drops to around 7 °C (44.5 °F). However, it dropped to 5 °C (41 °F) in April 1997.
On the warmest days, the temperature usually reaches around 24.5 °C (75.5 °F). However, it reached 26.4 °C (79.5 °F) in April 1998.
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 11 hours and 40 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 84% of the time.
The average humidity is 51%.
The average wind speed is 10 kph (6 mph).

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May is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 15.3 °C (59 °F), with a minimum of 8.4 °C (47.1 °F) and a maximum of 22.2 °C (71.9 °F).
On the coldest nights, the temperature usually drops to around 5 °C (41 °F). However, it dropped to 1.9 °C (35.4 °F) in May 1992.
On the warmest days, the temperature usually reaches around 24.5 °C (75.5 °F). However, it reached 30 °C (86 °F) in May 1998.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 11 hours and 20 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 82% of the time.
The average humidity is 33%. Hence, the air is normally dry.
The average wind speed is 11 kph (7 mph).

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June is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 14.8 °C (59 °F), with a minimum of 7.7 °C (45.9 °F) and a maximum of 21.9 °C (71.4 °F).
On the coldest nights, the temperature usually drops to around 4.5 °C (40.5 °F). However, it dropped to 1 °C (33.8 °F) in June 2004.
On the warmest days, the temperature usually reaches around 24.5 °C (76 °F). However, it reached 26.2 °C (79.2 °F) in June 2001.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 11 hours and 10 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 9.5 hours of sunshine per day. So, the sun shines 87% of the time.
The average humidity is 25%. Hence, the air is normally dry.
The average wind speed is 12 kph (8 mph).

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July, the coldest month of the year, is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 14.5 °C (58 °F), with a minimum of 7.4 °C (45.2 °F) and a maximum of 21.7 °C (71.1 °F).
On the coldest nights of the month, the temperature usually drops to around 4.5 °C (40 °F). However, it dropped to 1.7 °C (35.1 °F) in July 1992.
On the warmest days of the month, the temperature usually reaches around 23.5 °C (74.5 °F). However, it reached 28 °C (82.4 °F) in July 2011.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 11 hours and 20 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 83% of the time.
The average humidity is 24%. Hence, the air is normally dry.
The average wind speed is 13 kph (8 mph).

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August is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 14.9 °C (59 °F), with a minimum of 7.8 °C (46.1 °F) and a maximum of 22 °C (71.7 °F).
On the coldest nights of the month, the temperature usually drops to around 4.5 °C (40 °F). However, it dropped to -0.2 °C (31.6 °F) in August 2015.
On the warmest days of the month, the temperature usually reaches around 24 °C (75.5 °F). However, it reached 26.7 °C (80.1 °F) in August 2000.
Precipitation amounts to only 2 mm (0.1 in), distributed over 0 days.
The day lasts on average 11 hours and 35 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 86% of the time.
The average humidity is 24%. Hence, the air is normally dry.
The average wind speed is 12 kph (8 mph).

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September is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 15.6 °C (60 °F), with a minimum of 8.7 °C (47.6 °F) and a maximum of 22.4 °C (72.4 °F).
On the coldest nights, the temperature usually drops to around 5.5 °C (41.5 °F). However, it dropped to 0.9 °C (33.6 °F) in September 1996.
On the warmest days, the temperature usually reaches around 24.5 °C (76 °F). However, it reached 27 °C (80.6 °F) in September 1994.
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 82% of the time.
The average humidity is 26%. Hence, the air is normally dry.
The average wind speed is 12 kph (7 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 15.7 °C (60 °F), with a minimum of 9 °C (48.1 °F) and a maximum of 22.4 °C (72.2 °F).
On the coldest nights, the temperature usually drops to around 6 °C (42.5 °F). However, it dropped to 2 °C (35.6 °F) in October 1991.
On the warmest days, the temperature usually reaches around 24.5 °C (75.5 °F). However, it reached 26.1 °C (79 °F) in October 1994.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 12 hours and 30 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 78% of the time.
The average humidity is 29%. Hence, the air is normally dry.
The average wind speed is 11 kph (7 mph).

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November is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 15.5 °C (60 °F), with a minimum of 8.9 °C (48 °F) and a maximum of 22.2 °C (71.9 °F).
On the coldest nights, the temperature usually drops to around 6 °C (43 °F). However, it dropped to 3.2 °C (37.8 °F) in November 1992.
On the warmest days, the temperature usually reaches around 24 °C (75 °F). However, it reached 26.7 °C (80.1 °F) in November 1997.
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 10.5 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 35%.
The average wind speed is 11 kph (7 mph).

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December is generally a very mild month. The average temperature is of 15.8 °C (60 °F), with a minimum of 9.8 °C (49.6 °F) and a maximum of 21.8 °C (71.3 °F).
On the coldest nights of the month, the temperature usually drops to around 7 °C (44.5 °F). However, it dropped to 4.7 °C (40.5 °F) in December 2007.
On the warmest days of the month, the temperature usually reaches around 24 °C (75.5 °F). However, it reached 27.2 °C (81 °F) in December 2015.
Precipitation amounts to only 5 mm (0.2 in), and all occurs in one day.
The day lasts on average 13 hours and 5 minutes. 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 72% of the time.
The average humidity is 47%.
The average wind speed is 10 kph (7 mph).