December weather forecastConstitución, Chile
December
Weather in December
In Constitución, December brings warm, dry conditions that continue throughout the month. The weather essentially scales back to where it started the year, with temperatures rising from November. A notable drop in rainfall, recorded at just 4mm (0.16"), makes December the driest month of the year. With increasing daylight hours and progressively rising sea temperature, December favors beachgoers and swimmers. The constant UV index necessitates sun protection for those spending extended periods outdoors during the day.Temperature
December's advent presents an average high-temperature of an agreeable 20°C (68°F), indicating a slight variation from the conditions of the previous month. Constitución's average low-temperature for the month of December records at a refreshing 13°C (55.4°F).Humidity
The average relative humidity in December in Constitución is 72%.Rainfall
In December, in Constitución, the rain falls for 1.5 days. Throughout December, 4mm (0.16") of precipitation is accumulated. Throughout the year, in Constitución, Chile, there are 65.1 rainfall days, and 356mm (14.02") of precipitation is accumulated.Sea temperature
In Constitución, the average seawater temperature in December is 15.3°C (59.5°F).Note: For most, swimming in 15.3°C (59.5°F) is not a pleasant activity. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 14h and 30min of daylight, December has the longest days of the year in Constitución, Chile.On the first day of the month, sunrise is at 06:27 and sunset at 20:50. On the last day of December, in Constitución, sunrise is at 06:38 and sunset at 21:07 -03.
Sunshine
The average sunshine in December in Constitución, Chile, is 10.8h.UV index
January through April, November and December, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 5 in December translates into the following instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Constitución, Chile
- Average high temperature in December: 20°C
The warmest months (with the highest average high temperature) are January and February (21.8°C).
The month with the lowest average high temperature is July (12.8°C).
- Average low temperature in December: 13°C
The month with the highest average low temperature is January (14.5°C).
The coldest month (with the lowest average low temperature) is July (8.2°C).
Average pressure in December
Constitución, Chile
- Average pressure in December: 1015.2mbar
The month with the highest atmospheric pressure is July (1020mbar).
The month with the lowest atmospheric pressure is February (1013.9mbar).
Average wind speed in December
Constitución, Chile
- Average wind speed in December: 17.2km/h
The windiest month (with the highest average wind speed) is November (17.6km/h).
The calmest month (with the lowest average wind speed) is May (13km/h).
Average humidity in December
Constitución, Chile
- Average humidity in December: 72%
The months with the highest relative humidity are June, July and August (78%).
The months with the lowest relative humidity are January and March (70%).
Average rainfall in December
Constitución, Chile
- Average rainfall in December: 4mm
The wettest month (with the highest rainfall) is June (106mm).
The driest months (with the least rainfall) are January and February (1mm).
Average rainfall days in December
Constitución, Chile
- Average rainfall days in December: 1.5 days
The month with the highest number of rainy days is June (11.3 days).
The month with the least rainy days is February (0.9 days).
Average sea temperature in December
Constitución, Chile
- Average sea temperature in December: 15.3°C
The best month for swimming (with the highest average sea temperature) is March (16.4°C).
The coldest months (with the lowest average sea temperature) are August and September (12.8°C).
Average daylight in December /
Average sunshine in December
Constitución, Chile
- Average daylight in December: 14h and 30min
The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).
- Average sunshine in December: 10h and 48min
The month with the most sunshine is January (Average sunshine: 11h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 30min).
Average sunshine days in December
Constitución, Chile
- Average sunshine days in December: 28.9 days
The month with the most sunshine days is March (29.5 days).
The month with the least sunshine days is June (18 days).
Average UV index in December
Constitución, Chile
- Average UV index in December: 5
The months with the highest UV index are January, February, March, April, November and December (UV index 5).
The months with the lowest UV index are June and July (UV index 3).
Average cloud cover in December
Constitución, Chile
- Average cloud cover in December: 11
The month with the most cloud cover is June (Cloud cover 36).
The month with the least cloud cover is February (Cloud cover 8).
Average visibility in December
Constitución, Chile
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is May (9km).
