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
Weather in December
Temperature
The arrival of December coincides with an average high-temperature of a still warm 28.2°C (82.8°F), indicating a minimal shift from November's 28.8°C (83.8°F). In Nueve Millas, December nights maintain a consistent temperature, with an average low of 23.4°C (74.1°F).Heat index
For most parts of December, the heat index is evaluated at a tropical 31°C (87.8°F). With extended exposure and activity, one might feel exhausted and experience heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In Nueve Millas, the average relative humidity in December is 72%.Rainfall
In Nueve Millas, during December, the rain falls for 19.6 days and regularly aggregates up to 192mm (7.56") of precipitation. Throughout the year, in Nueve Millas, there are 241.5 rainfall days, and 1580mm (62.2") of precipitation is accumulated.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 05:34 and sunset at 17:09. On the last day of the month, sunrise is at 05:49 and sunset at 17:22 CST.
Sunshine
The month with the least sunshine is December, with an average of 7.3h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
How hot is December in Nueve Millas?
What is the average humidity in December in Nueve Millas?
How many days does it rain in December in Nueve Millas?
What is the month with the shortest days in Nueve Millas?
What is the average length of the day in December in Nueve Millas?
When is the sunrise / sunset in December in Nueve Millas?
What is the month with the least sunshine in Nueve Millas?
How long on average sun shines in December in Nueve Millas?
What are the months with the lowest UV index in Nueve Millas?
What is the UV index intensity in December in Nueve Millas?
Average temperature in December
Nueve Millas, Costa Rica
- Average high temperature in December: 28.2°C
The warmest month (with the highest average high temperature) is September (30°C).
The month with the lowest average high temperature is January (27.6°C).
- Average low temperature in December: 23.4°C
The months with the highest average low temperature are May and June (25.3°C).
The coldest month (with the lowest average low temperature) is February (22.8°C).
Average pressure in December
Nueve Millas, Costa Rica
- Average pressure in December: 1012.2mbar
The month with the highest atmospheric pressure is January (1013.1mbar).
The month with the lowest atmospheric pressure is October (1010.9mbar).
Average wind speed in December
Nueve Millas, Costa Rica
- Average wind speed in December: 9.2km/h
The windiest month (with the highest average wind speed) is November (9.7km/h).
The calmest month (with the lowest average wind speed) is September (7.4km/h).
Average humidity in December
Nueve Millas, Costa Rica
- Average humidity in December: 72%
The months with the highest relative humidity are May and June (74%).
The month with the lowest relative humidity is September (71%).
Average rainfall in December
Nueve Millas, Costa Rica
- Average rainfall in December: 192mm
The wettest month (with the highest rainfall) is July (203mm).
The driest month (with the least rainfall) is April (65mm).
Average rainfall days in December
Nueve Millas, Costa Rica
- Average rainfall days in December: 19.6 days
The month with the highest number of rainy days is July (25.8 days).
The month with the least rainy days is February (15.7 days).
Average daylight in December /
Average sunshine in December
Nueve Millas, 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 2min
The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 18min).
Average sunshine days in December
Nueve Millas, Costa Rica
- Average sunshine days in December: 9.1 days
The month with the most sunshine days is January (10.6 days).
The month with the least sunshine days is July (3.2 days).
Average UV index in December
Nueve Millas, Costa Rica
- Average UV index in December: 6
The months with the highest UV index are March, April, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February and December (UV index 6).
Average cloud cover in December
Nueve Millas, Costa Rica
- Average cloud cover in December: 46
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in December
Nueve Millas, Costa Rica
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
Nueve Millas, Costa Rica
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