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Climate in San Luis Potosí (Mexico)


Average weather, temperature, rainfall, sunshine hours

Flag - Mexico

San Luis Potosí, where it's located


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Climate chart - San Luis Potosí
The climate of San Luis Potosí is arid subtropical, mitigated by altitude, with a very mild winter from mid-November to early March, a warm and dry period from March to May, and a warm summer with some rain from June to mid-October.
The city is located in central Mexico, at the 22nd parallel, and at 1,865 meters (6,120 feet) above sea level, and is the capital of the homonymous state.
Although the winter is mild, it gets quite cold at night, and sometimes colder air masses can come down from the United States. In December 1997, it snowed and the temperature dropped to -9 °C (16 °F).
On the hottest days of the year, which generally occur in May and sometimes in April, the temperature can reach or exceed 35 °C (95 °F).
Summer, being not very rainy, is a sunny season.

San Luis Potosí

Best Time


In theory, San Luis Potosí can be visited all year round, since the summer is not too rainy and the winter is not too cold. However, you can choose the period from November to March, which is the driest season, and it is not hot, as it can sometimes happen in April and May.

San Luis Potosí - Climate data


In San Luis Potosí, the average temperature of the coldest month (January) is of 13.1 °C, that of the warmest month (May) is of 21.2 °C. Here are the average temperatures.
San Luis Potosí - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January3.622.613.1
February5.125.215.1
March7.127.617.4
April9.630.119.8
May11.530.921.2
June12.429.320.9
July12.127.619.8
August1227.719.8
September1226.219.1
October9.225.717.4
November6.224.215.2
December423.213.6
Year8.726.717.7

Precipitation amounts to 390 millimeters per year: it is therefore quite scarce. It ranges from 5 millimeters in the driest month (March) to 65 millimeters in the wettest ones (June, July, September) Here is the average precipitation.
San Luis Potosí - Average precipitation
MonthRain (mm)Days
January152
February102
March52
April203
May406
June657
July658
August607
September658
October305
November102
December102
Year39053

There are on average around 2935 sunshine hours per year. Here are the average hours of sunshine per day.
San Luis Potosí - Sunshine hours
MonthAverageTotal
January7220
February8.5235
March8.5270
April8.5255
May9280
June9265
July9.5295
August8250
September6.5200
October7225
November7.5230
December7210
Year82935

San Luis Potosí - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January, 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 13.1 °C, with a minimum of 3.6 °C and a maximum of 22.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -2.5 °C. However, it dropped to -6 °C in January 2006.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27.5 °C. However, it reached 30.1 °C in January 2017.
Rain iconPrecipitation amounts to 15 mm, distributed over 2 days.
The day lasts on average 11 hours and 0 minutes.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 55%.
The average wind speed is of 8.4 kph.


February is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 15.1 °C, with a minimum of 5.1 °C and a maximum of 25.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -1 °C. However, it dropped to -5 °C in February 1999.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 29.5 °C. However, it reached 35.6 °C in February 2019.
Rain iconPrecipitation amounts to 10 mm, distributed over 2 days.
The day lasts on average 11 hours and 25 minutes.
Sun iconThere are on average 8.5 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 49%.
The average wind speed is of 9.6 kph.


March is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 17.4 °C, with a minimum of 7.1 °C and a maximum of 27.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 1 °C. However, it dropped to -5.1 °C in March 1996.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32 °C. However, it reached 34.6 °C in March 2020.
Rain iconPrecipitation amounts to only 5 mm, distributed over 2 days.
The day lasts on average 12 hours and 5 minutes.
Sun iconThere are on average 8.5 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 44%.
The average wind speed is of 10.9 kph.


April is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.8 °C, with a minimum of 9.6 °C and a maximum of 30.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 4.5 °C. However, it dropped to 1 °C in April 2000.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34 °C. However, it reached 36.2 °C in April 1998.
Rain iconPrecipitation amounts to 20 mm, distributed over 3 days.
The day lasts on average 12 hours and 40 minutes.
Sun iconThere are on average 8.5 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 41%.
The average wind speed is of 10.8 kph.


May, the warmest month of the year, is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 21.2 °C, with a minimum of 11.5 °C and a maximum of 30.9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 7.5 °C. However, it dropped to 3.8 °C in May 2011.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 35 °C. However, it reached 38.2 °C in May 2011.
Rain iconPrecipitation amounts to 40 mm, distributed over 6 days.
The day lasts on average 13 hours and 10 minutes.
Sun iconThere are on average 9 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 48%.
The average wind speed is of 9.9 kph.


June is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 20.9 °C, with a minimum of 12.4 °C and a maximum of 29.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 9 °C. However, it dropped to 6.7 °C in June 2011.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34 °C. However, it reached 37.8 °C in June 1995.
Rain iconPrecipitation amounts to 65 mm, distributed over 7 days.
The day lasts on average 13 hours and 30 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
Sun iconThere are on average 9 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 58%.
The average wind speed is of 10.9 kph.


July is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.8 °C, with a minimum of 12.1 °C and a maximum of 27.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 9 °C. However, it dropped to 6 °C in July 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31.5 °C. However, it reached 34.5 °C in July 2009.
Rain iconPrecipitation amounts to 65 mm, distributed over 8 days.
The day lasts on average 13 hours and 20 minutes.
Sun iconThere are on average 9.5 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 63%.
The average wind speed is of 11 kph.


August is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.8 °C, with a minimum of 12 °C and a maximum of 27.7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 8.5 °C. However, it dropped to 4.2 °C in August 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31 °C. However, it reached 34 °C in August 2011.
Rain iconPrecipitation amounts to 60 mm, distributed over 7 days.
The day lasts on average 12 hours and 50 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 63%.
The average wind speed is of 11 kph.


September is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 19.1 °C, with a minimum of 12 °C and a maximum of 26.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 7.5 °C. However, it dropped to 3 °C in September 2000.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 30.5 °C. However, it reached 33 °C in September 1991.
Rain iconPrecipitation amounts to 65 mm, distributed over 8 days.
The day lasts on average 12 hours and 10 minutes.
Sun iconThere are on average 6.5 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 69%.
The average wind speed is of 9.5 kph.


October is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 17.4 °C, with a minimum of 9.2 °C and a maximum of 25.7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3 °C. However, it dropped to -3 °C in October 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 30 °C. However, it reached 33 °C in October 2009.
Rain iconPrecipitation amounts to 30 mm, distributed over 5 days.
The day lasts on average 11 hours and 35 minutes.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 65%.
The average wind speed is of 8 kph.


November is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of 15.2 °C, with a minimum of 6.2 °C and a maximum of 24.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -0.5 °C. However, it dropped to -5.4 °C in November 2011.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28.5 °C. However, it reached 30.7 °C in November 2017.
Rain iconPrecipitation amounts to 10 mm, distributed over 2 days.
The day lasts on average 11 hours and 5 minutes.
Sun iconThere are on average 7.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 62%.
The average wind speed is of 7.5 kph.


December is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of 13.6 °C, with a minimum of 4 °C and a maximum of 23.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -2.5 °C. However, it dropped to -9 °C in December 1997.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28 °C. However, it reached 30 °C in December 2011.
Rain iconPrecipitation amounts to 10 mm, distributed over 2 days.
The day lasts on average 10 hours and 50 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 56%.
The average wind speed is of 7.7 kph.

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