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
December
Weather in December
Temperature
The start of December sees the average high-temperature at a still refreshing 14.6°C (58.3°F), showing little difference from November's 15.4°C (59.7°F). Throughout December, the nighttime temperature in San Marcos, Peru, averages to a chilly 6.8°C (44.2°F).Humidity
The average relative humidity in December is 82%.Rainfall
In San Marcos, Peru, during December, the rain falls for 28.3 days and regularly aggregates up to 167mm (6.57") of precipitation. In San Marcos, Peru, during the entire year, the rain falls for 274.3 days and collects up to 1378mm (54.25") of precipitation.Snowfall
Months with snowfall are January through July, October through December. In San Marcos, in December, during 0.7 snowfall days, 4mm (0.16") of snow is typically accumulated. In San Marcos, Peru, during the entire year, snow falls for 10.7 days and aggregates up to 76mm (2.99") of snow.Daylight
The month with the longest days is December, with an average of 12h and 30min of daylight.On the first day of the month, sunrise is at 05:46 and sunset at 18:17. On the last day of December, sunrise is at 05:59 and sunset at 18:32 -05.
Sunshine
In December, the average sunshine in San Marcos is 8.7h.UV index
January through August, October and December, with an average maximum UV index of 3, are months with the lowest UV index in San Marcos. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 3 in December leads to these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in San Marcos?
What is the average humidity in December in San Marcos?
How much does it rain in San Marcos in December?
How much does it snow in San Marcos in December?
When are the longest days in San Marcos?
How many hours of daylight does San Marcos have in December?
When is the sunrise / sunset in December in San Marcos?
How long on average sun shines in December in San Marcos?
When is the lowest UV index in San Marcos?
What is the UV index intensity in December in San Marcos?
Average temperature in December
San Marcos, Peru
- Average high temperature in December: 14.6°C
The warmest month (with the highest average high temperature) is August (16.6°C).
The months with the lowest average high temperature are February and March (14.1°C).
- Average low temperature in December: 6.8°C
The month with the highest average low temperature is March (7.3°C).
The coldest month (with the lowest average low temperature) is July (4.7°C).
Average pressure in December
San Marcos, Peru
- Average pressure in December: 1013.7mbar
The month with the highest atmospheric pressure is July (1016.3mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in December
San Marcos, Peru
- Average wind speed in December: 6.8km/h
The windiest month (with the highest average wind speed) is July (12.8km/h).
The calmest month (with the lowest average wind speed) is March (6.2km/h).
Average humidity in December
San Marcos, Peru
- Average humidity in December: 82%
The month with the highest relative humidity is March (87%).
The month with the lowest relative humidity is August (68%).
Average rainfall in December
San Marcos, Peru
- Average rainfall in December: 167mm
The wettest month (with the highest rainfall) is March (238mm).
The driest month (with the least rainfall) is August (20mm).
Average rainfall days in December
San Marcos, Peru
- Average rainfall days in December: 28.3 days
The month with the highest number of rainy days is March (30 days).
The month with the least rainy days is August (10.9 days).
Average snowfall in December
San Marcos, Peru
- Average snowfall in December: 4mm
The month with the highest snowfall is November (19mm).
The months with the least snowfall are August and September (0mm).
Average snowfall days in December
San Marcos, Peru
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is October (1.7 days).
The month with the least snowfall days is September (0 days).
Average daylight in December /
Average sunshine in December
San Marcos, Peru
- Average daylight in December: 12h and 3min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in December: 8h and 4min
The month with the most sunshine is October (Average sunshine: 10h and 6min).
The month with the least sunshine is March (Average sunshine: 5h and 54min).
Average sunshine days in December
San Marcos, Peru
- Average sunshine days in December: 1.7 days
The month with the most sunshine days is July (16 days).
The months with the least sunshine days are February and March (0.3 days).
Average UV index in December
San Marcos, Peru
- Average UV index in December: 3
The months with the highest UV index are September and November (UV index 4).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October and December (UV index 3).
Average cloud cover in December
San Marcos, Peru
- Average cloud cover in December: 52
The month with the most cloud cover is March (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
San Marcos, Peru
- Average visibility in December: 8km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are February and March (7km).
