San Luis
Argentina
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
San Luis, Argentina

September, the first month of the spring, in San Luis, is an agreeable month, with average temperature varying between 20.7°C (69.3°F) and 10.4°C (50.7°F).

Temperature

In San Luis, the average high-temperature is relatively the same as in August - a pleasant 20.7°C (69.3°F). In September, in San Luis, the average low-temperature is 10.4°C (50.7°F).

Humidity

In San Luis, the average relative humidity is 46%.

Rainfall

In San Luis, during September, the rain falls for 6.1 days and regularly aggregates up to 13mm (0.51") of precipitation. Throughout the year, in San Luis, there are 102.6 rainfall days, and 350mm (13.78") of precipitation is accumulated.

Snowfall

Months with snowfall are June through September. September is the last month it regularly snows. During 0.3 snowfall days, San Luis aggregates 1mm (0.04") of snow. Throughout the year, in San Luis, Argentina, there are 1.3 snowfall days, and 10mm (0.39") of snow is accumulated.

Daylight

In September, the average length of the day is 11.9h.

Sunshine

The average sunshine in San Luis is 9.3h.

UV index

In San Luis, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in September in San Luis?

In September, the average high-temperature is 20.7°C (69.3°F), and the average low-temperature is 10.4°C (50.7°F).

What is the average humidity in September in San Luis?

The average relative humidity in September in San Luis, Argentina, is 46%.

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

In San Luis, in September, it is raining for 6.1 days, with typically 13mm (0.51") of accumulated precipitation.

What is the last month it snows in San Luis?

September is the last month it regularly snows in San Luis. During 0.3 snowfall days, in September, San Luis aggregates 1mm (0.04") of snow.

What is the average length of the day in September in San Luis?

In September, the average length of the day in San Luis, Argentina, is 11.9h.

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

In September, the average sunshine is 9.3h.

What is the UV index reading in September in San Luis?

The average daily maximum UV index in September in San Luis is 5. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.
Average temperature in September - San Luis, Argentina
  • Average high temperature in September: 20.7°C

The warmest month (with the highest average high temperature) is January (31°C).
The month with the lowest average high temperature is July (14.6°C).

  • Average low temperature in September: 10.4°C

The month with the highest average low temperature is January (20.1°C).
The coldest month (with the lowest average low temperature) is July (5.9°C).

Average humidity in September - San Luis, Argentina
  • Average humidity in September: 46%

The month with the highest relative humidity is May (63%).
The month with the lowest relative humidity is December (43%).

Average rainfall in September - San Luis, Argentina
  • Average rainfall in September: 13mm

The wettest month (with the highest rainfall) is January (59mm).
Driest months (with the lowest rainfall) are July and August (2mm).

Average rainfall days in September - San Luis, Argentina
  • Average rainfall days in September: 6.1 days

The month with the highest number of rainy days is November (14.2 days).
The month with the lowest number of rainy days is August (1.7 days).

Average snowfall in September - San Luis, Argentina
  • Average snowfall in September: 1mm

The month with the highest snowfall is June (6mm).
Months with the lowest snowfall are January, February, March, April, May, October, November and December (0mm).

Average snowfall days in September - San Luis, Argentina
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is July (0.5 days).
Months with the lowest number of snowfall days are January, February, March, April, May, October, November and December (0 days).

Average daylight in September / Average sunshine in September - San Luis, Argentina
  • Average daylight in September: 11.9h

The month with the longest days is December (Average daylight: 14.3h).
The month with shortest days is June (Average daylight: 10h).

  • Average sunshine in September: 9.3h

Months with most sunshine are January and December (Average sunshine: 9.6h).
The month with least sunshine is May (Average sunshine: 9h).

Average UV index in September - San Luis, Argentina
  • Average UV index in September: 5

Months with the highest UV index are January, February, October, November and December (UV index 6).
Months with the lowest UV index are May and June (UV index 3).