September weather forecast and climate
San Luis Potosi, Mexico

The first month of the autumn, September, is also a warm month in San Luis Potosi, Mexico, with average temperature varying between 12.9°C (55.2°F) and 23.8°C (74.8°F).

Temperature

In San Luis Potosi, the average high-temperature is 23.8°C (74.8°F), and the average low-temperature is 12.9°C (55.2°F).

Humidity

Months with the highest humidity are July and September, with an average relative humidity of 68%.

Rainfall

In San Luis Potosi, it is raining for 8.4 days, with typically 65.2mm (2.6") of accumulated precipitation. In San Luis Potosi, during the entire year, the rain falls for 53.2 days and collects up to 392.1mm (15.4") of precipitation.

Daylight

In San Luis Potosi, the average length of the day in September is 12.3h.

Sunshine

The month with the least sunshine in San Luis Potosi is September, with an average of 6.7h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme threat to health from unprotected exposure to the Sun's UV rays for average individuals.
In September, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in San Luis Potosi?

In September, the average high-temperature is 23.8°C (74.8°F), and the average low-temperature is 12.9°C (55.2°F).

What is the most humid month in San Luis Potosi?

Months with the highest humidity in San Luis Potosi, Mexico, are July and September, with an average relative humidity of 68%.

What is the average humidity in September in San Luis Potosi?

In September, the average relative humidity in San Luis Potosi, Mexico, is 68%.

How many days does it rain in September in San Luis Potosi?

In San Luis Potosi, during September, the rain falls for 8.4 days and regularly aggregates up to 65.2mm (2.6") of precipitation.

How many hours of daylight does San Luis Potosi have in September?

In San Luis Potosi, Mexico, the average length of the day in September is 12.3h.

What is the month with the least sunshine in San Luis Potosi?

September has the least sunshine of the year in San Luis Potosi, with an average of 6.7h of sunshine.

How many hours of sunshine does San Luis Potosi have in September?

The average sunshine in September in San Luis Potosi, Mexico, is 6.7h.

What are the months with the highest UV index in San Luis Potosi?

March through September, with an average maximum UV index of 12, are months with the highest UV index in San Luis Potosi.

What is the UV index intensity in September in San Luis Potosi?

The average daily maximum UV index in September in San Luis Potosi is 12. A UV Index of 11, and more, symbolizes an extreme health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - San Luis Potosi, Mexico
  • Average high temperature in September: 23.8°C

The warmest month (with the highest average high temperature) is May (28.4°C).
The month with the lowest average high temperature is January (20.6°C).

  • Average low temperature in September: 12.9°C

The month with the highest average low temperature is June (14.1°C).
The coldest month (with the lowest average low temperature) is January (5.5°C).

Average humidity in September - San Luis Potosi, Mexico
  • Average humidity in September: 68%

Months with the highest relative humidity are July and September (68%).
The month with the lowest relative humidity is March (47%).

Average rainfall in September - San Luis Potosi, Mexico
  • Average rainfall in September: 65.2mm

The wettest month (with the highest rainfall) is July (66.6mm).
The driest month (with the lowest rainfall) is March (6.4mm).

Average rainfall days in September - San Luis Potosi, Mexico
  • Average rainfall days in September: 8.4 days

The month with the highest number of rainy days is September (8.4 days).
The month with the lowest number of rainy days is March (1.5 days).

Average daylight in September / Average sunshine in September - San Luis Potosi, Mexico
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.5h).
The month with shortest days is December (Average daylight: 10.8h).

  • Average sunshine in September: 6.7h

The month with most sunshine is July (Average sunshine: 9.5h).
The month with least sunshine is September (Average sunshine: 6.7h).

Average UV index in September - San Luis Potosi, Mexico
  • Average UV index in September: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 7).

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