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
December records an average high-temperature of a still warm 27°C (80.6°F), indicating a minor variation from the preceding month. During December, an average low-temperature of 20.5°C (68.9°F) is observed in Porvenir.Heat index
For December, the heat index is evaluated at 29°C (84.2°F). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial 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 December, the average relative humidity in Porvenir is 77%.Rainfall
In December, the rain falls for 20.9 days. Throughout December, 67mm (2.64") of precipitation is accumulated. Throughout the year, in Porvenir, Costa Rica, there are 290 rainfall days, and 2270mm (89.37") 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 05:38 and sunset at 17:14. On the last day of the month, sunrise is at 05:53 and sunset at 17:27 CST.
Sunshine
In December, the average sunshine is 9.2h.UV index
January through December, with an average maximum UV index of 6, are months with the highest UV index. January through December, with an average maximum UV index of 6, are months with the lowest UV index in Porvenir. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 6 transforms into these recommendations:
Shield from overexposure. Defense against sun-related harm is required. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What is the average December temperature in Porvenir?
What is the average humidity in December in Porvenir?
How many days does it rain in December in Porvenir?
What is the month with the shortest days in Porvenir?
What is the average length of the day in December in Porvenir?
When is the sunrise / sunset in December in Porvenir?
How long on average sun shines in December in Porvenir?
What is the month with the highest UV index in Porvenir?
What are the months with the lowest UV index in Porvenir?
How high is the UV index in December in Porvenir?
Average temperature in December
Porvenir, Costa Rica
- Average high temperature in December: 27°C
The warmest month (with the highest average high temperature) is March (29.3°C).
The month with the lowest average high temperature is October (25.3°C).
- Average low temperature in December: 20.5°C
The month with the highest average low temperature is April (21.9°C).
The coldest months (with the lowest average low temperature) are January, February and December (20.5°C).
Average pressure in December
Porvenir, Costa Rica
- Average pressure in December: 1011.3mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The months with the lowest atmospheric pressure are October and November (1010.9mbar).
Average wind speed in December
Porvenir, Costa Rica
- Average wind speed in December: 6.4km/h
The windiest months (with the highest average wind speed) are February and March (7.6km/h).
The calmest month (with the lowest average wind speed) is June (5.2km/h).
Average humidity in December
Porvenir, Costa Rica
- Average humidity in December: 77%
The months with the highest relative humidity are September and October (86%).
The months with the lowest relative humidity are February and March (68%).
Average rainfall in December
Porvenir, Costa Rica
- Average rainfall in December: 67mm
The wettest month (with the highest rainfall) is October (440mm).
The driest month (with the least rainfall) is February (18mm).
Average rainfall days in December
Porvenir, Costa Rica
- Average rainfall days in December: 20.9 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (9.7 days).
Average daylight in December /
Average sunshine in December
Porvenir, 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: 9h and 1min
The month with the most sunshine is February (Average sunshine: 9h and 48min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).
Average sunshine days in December
Porvenir, Costa Rica
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is February (13.7 days).
The month with the least sunshine days is September (0.2 days).
Average UV index in December
Porvenir, Costa Rica
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in December
Porvenir, Costa Rica
- Average cloud cover in December: 27
The month with the most cloud cover is October (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 15).
Average visibility in December
Porvenir, Costa Rica
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
Porvenir, Costa Rica
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