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 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
As November transitions into December, San Clemente records an average high-temperature of a still warm 27.1°C (80.8°F), showing a gentle shift from the preceding month. Registering an almost steady temperature, San Clemente's nights in December see an average low of 22.5°C (72.5°F).Heat index
The heat index for December is evaluated at a tropical 30°C (86°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Always consider that heat index estimations are for light winds and places in the shade. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
In December, the average relative humidity in San Clemente is 78%.Rainfall
In San Clemente, in December, during 9.4 rainfall days, 31mm (1.22") of precipitation is typically accumulated. In San Clemente, during the entire year, the rain falls for 116.2 days and collects up to 333mm (13.11") of precipitation.Daylight
December has the longest days of the year in San Clemente, Ecuador, with an average of 12h and 12min of daylight.On the first day of December in San Clemente, Ecuador, sunrise is at 06:06 and sunset at 18:16. On the last day of the month, sunrise is at 06:20 and sunset at 18:30 -05.
Sunshine
In San Clemente, the average sunshine in December is 5.7h.UV index
The months with the highest UV index in San Clemente, Ecuador, are January through July, September, October and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the UV index of 6 transforms into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in San Clemente?
What is the average humidity in December in San Clemente?
How many days does it rain in December in San Clemente?
When are the longest days in San Clemente?
How many hours of daylight does San Clemente have in December?
When is the sunrise / sunset in December in San Clemente?
How long on average sun shines in December in San Clemente?
What is the month with the highest UV index in San Clemente?
How high is the UV index in December in San Clemente?
Average temperature in December
San Clemente, Ecuador
- Average high temperature in December: 27.1°C
The warmest month (with the highest average high temperature) is March (28.3°C).
The month with the lowest average high temperature is August (26.1°C).
- Average low temperature in December: 22.5°C
The month with the highest average low temperature is February (23.3°C).
The coldest month (with the lowest average low temperature) is August (20.3°C).
Average pressure in December
San Clemente, Ecuador
- Average pressure in December: 1011mbar
The months with the highest atmospheric pressure are August, September and October (1011.8mbar).
The month with the lowest atmospheric pressure is February (1010.5mbar).
Average wind speed in December
San Clemente, Ecuador
- Average wind speed in December: 12.6km/h
The windiest month (with the highest average wind speed) is November (13.9km/h).
The calmest month (with the lowest average wind speed) is March (7.5km/h).
Average humidity in December
San Clemente, Ecuador
- Average humidity in December: 78%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
San Clemente, Ecuador
- Average rainfall in December: 31mm
The wettest month (with the highest rainfall) is January (88mm).
The driest month (with the least rainfall) is September (2mm).
Average rainfall days in December
San Clemente, Ecuador
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is February (20.4 days).
The month with the least rainy days is September (3.6 days).
Average daylight in December /
Average sunshine in December
San Clemente, Ecuador
- Average daylight in December: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 6min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is May (Average sunshine: 7h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
San Clemente, Ecuador
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is February (6.5 days).
Average UV index in December
San Clemente, Ecuador
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, September, October and December (UV index 6).
The months with the lowest UV index are August and November (UV index 5).
Average cloud cover in December
San Clemente, Ecuador
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is May (Cloud cover 45).
Average visibility in December
San Clemente, Ecuador
- 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).
