Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
San Luis records a slight change with December's average high-temperatures adjusting to a still moderately hot 29.5°C (85.1°F) from November's 26.8°C (80.2°F). During the month of December, the nighttime temperature falls to an average of 18.5°C (65.3°F).Heat index
Throughout December, the heat index is calculated to be 29°C (84.2°F). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
With an average relative humidity of 43%, December is the least humid month.Rainfall
In December, the rain falls for 13.4 days. Throughout December, 49mm (1.93") of precipitation is accumulated. Throughout the year, in San Luis, there are 102.6 rainfall days, and 350mm (13.78") of precipitation is accumulated.Snowfall
January through May, October through December are months without snowfall in San Luis, Argentina.Daylight
December has the longest days of the year, with an average of 14h and 18min of daylight.On the first day of December, sunrise is at 06:08 and sunset at 20:20. On the last day of the month, sunrise is at 06:19 and sunset at 20:38 -03.
Sunshine
January and December, with an average of 9.6h of sunshine, are months with the most sunshine in San Luis, Argentina.UV index
The months with the highest UV index in San Luis are January, February, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, the average maximum UV index of 6 translates into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
How hot does it get in San Luis in December?
What is the least humid month in San Luis?
What is the average humidity in December in San Luis?
How many days does it rain in December in San Luis?
When it does not snow in San Luis?
When are the longest days in San Luis?
What is the average length of the day in December in San Luis?
When is the sunrise / sunset in December in San Luis?
What is the month with the most sunshine in San Luis?
How many hours of sunshine does San Luis have in December?
What is the month with the highest UV index in San Luis?
What is the UV index reading in December in San Luis?
Average temperature in December
San Luis, Argentina
- Average high temperature in December: 29.5°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 December: 18.5°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 pressure in December
San Luis, Argentina
- Average pressure in December: 1008.3mbar
The month with the highest atmospheric pressure is July (1017.9mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in December
San Luis, Argentina
- Average wind speed in December: 17.2km/h
The windiest month (with the highest average wind speed) is October (18.6km/h).
The calmest month (with the lowest average wind speed) is May (13.1km/h).
Average humidity in December
San Luis, Argentina
- Average humidity in December: 43%
The month with the highest relative humidity is May (63%).
The month with the lowest relative humidity is December (43%).
Average rainfall in December
San Luis, Argentina
- Average rainfall in December: 49mm
The wettest month (with the highest rainfall) is January (59mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in December
San Luis, Argentina
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is November (14.2 days).
The month with the least rainy days is August (1.7 days).
Average snowfall in December
San Luis, Argentina
- Average snowfall in December: 0mm
The month with the highest snowfall is June (6mm).
The months with the least snowfall are January, February, March, April, May, October, November and December (0mm).
Average snowfall days in December
San Luis, Argentina
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is July (0.5 days).
The months with the least snowfall days are January, February, March, April, May, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
San Luis, Argentina
- Average daylight in December: 14h and 2min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in December: 9h and 4min
The months with the most sunshine are January and December (Average sunshine: 9h and 36min).
The month with the least sunshine is May (Average sunshine: 9h and 0min).
Average sunshine days in December
San Luis, Argentina
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (12.5 days).
Average UV index in December
San Luis, Argentina
- Average UV index in December: 6
The months with the highest UV index are January, February, October, November and December (UV index 6).
The months with the lowest UV index are May and June (UV index 3).
Average cloud cover in December
San Luis, Argentina
- Average cloud cover in December: 14
The months with the most cloud cover are April and May (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
San Luis, Argentina
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
San Luis, Argentina
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