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
Transitioning into December, Mesa records an average high-temperature of a moderately hot 23.4°C (74.1°F), almost identical to November's 22.7°C (72.9°F). In Mesa, December's nights observe an average temperature dip to a moderate 14°C (57.2°F).Humidity
In December, the average relative humidity is 84%.Rainfall
In Mesa, during December, the rain falls for 19.5 days and regularly aggregates up to 65mm (2.56") of precipitation. In Mesa, Costa Rica, during the entire year, the rain falls for 287.8 days and collects up to 2585mm (101.77") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 36min of daylight.On the first day of December, sunrise is at 05:38 and sunset at 17:13. On the last day of the month, sunrise is at 05:53 and sunset at 17:27 CST.
Sunshine
The average sunshine in December is 7.8h.UV index
January through December, with an average maximum UV index of 5, are months with the highest UV index in Mesa. January through December, with an average maximum UV index of 5, are months with the lowest UV index in Mesa. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 5 leads to the following instructions:
Exercise prevention - Warding off sunburn is urged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mesa in December?
What is the average humidity in December in Mesa?
How many days does it rain in December in Mesa?
What is the month with the shortest days in Mesa?
How many hours of daylight does Mesa have in December?
What time are sunrise and sunset in December in Mesa?
How long on average sun shines in December in Mesa?
What are the months with the highest UV index in Mesa?
When is the lowest UV index in Mesa?
What is the UV index intensity in December in Mesa?
Average temperature in December
Mesa, Costa Rica
- Average high temperature in December: 23.4°C
The warmest month (with the highest average high temperature) is April (26°C).
The month with the lowest average high temperature is October (22.4°C).
- Average low temperature in December: 14°C
The month with the highest average low temperature is June (17°C).
The coldest month (with the lowest average low temperature) is January (13.8°C).
Average pressure in December
Mesa, Costa Rica
- Average pressure in December: 1011.7mbar
The month with the highest atmospheric pressure is January (1012.3mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).
Average wind speed in December
Mesa, Costa Rica
- Average wind speed in December: 9km/h
The windiest month (with the highest average wind speed) is February (10.7km/h).
The calmest month (with the lowest average wind speed) is September (4.3km/h).
Average humidity in December
Mesa, Costa Rica
- Average humidity in December: 84%
The months with the highest relative humidity are September and October (91%).
The months with the lowest relative humidity are February and March (75%).
Average rainfall in December
Mesa, Costa Rica
- Average rainfall in December: 65mm
The wettest month (with the highest rainfall) is October (438mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in December
Mesa, Costa Rica
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (12.2 days).
Average daylight in December /
Average sunshine in December
Mesa, Costa Rica
- Average daylight in December: 11h and 4min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in December: 7h and 5min
The month with the most sunshine is February (Average sunshine: 9h and 12min).
The month with the least sunshine is October (Average sunshine: 5h and 48min).
Average sunshine days in December
Mesa, Costa Rica
- Average sunshine days in December: 9.1 days
The month with the most sunshine days is March (13.5 days).
The month with the least sunshine days is September (0.1 days).
Average UV index in December
Mesa, Costa Rica
- Average UV index in December: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in December
Mesa, Costa Rica
- Average cloud cover in December: 45
The month with the most cloud cover is October (Cloud cover 68).
The month with the least cloud cover is February (Cloud cover 30).
Average visibility in December
Mesa, Costa Rica
- Average visibility in December: 8km
The months with the highest visibility are January, February and March (9km).
The months with the lowest visibility are August, September, October and November (6km).
