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 commencement of December in Alajuela introduces an average high-temperature of a still warm 25.2°C (77.4°F), closely mirroring the preceding month. The nights of December anticipate an average low-temperature of 15.7°C (60.3°F).Humidity
In Alajuela, the average relative humidity in December is 81%.Rainfall
In Alajuela, Costa Rica, in December, during 21 rainfall days, 62mm (2.44") of precipitation is typically accumulated. In Alajuela, Costa Rica, during the entire year, the rain falls for 289.5 days and collects up to 2506mm (98.66") of precipitation.Daylight
With an average of 11h and 30min of daylight, December has the shortest days of the year in Alajuela.On the first day of December in Alajuela, sunrise is at 05:40 and sunset at 17:13. On the last day of the month, sunrise is at 05:55 and sunset at 17:26 CST.
Sunshine
In December, the average sunshine is 8.3h.UV index
January, February, May through December, with an average maximum UV index of 5, are months with the lowest UV index in Alajuela. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during December translates into the following guidance:
Guard yourself - An obligation to protect skin and eyes from harm exists. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What is the average December temperature in Alajuela?
What is the average humidity in December in Alajuela?
How many days does it rain in December in Alajuela?
What is the month with the shortest days in Alajuela?
What is the average length of the day in December in Alajuela?
When is the sunrise / sunset in December in Alajuela?
How long on average sun shines in December in Alajuela?
What are the months with the lowest UV index in Alajuela?
What is the UV index reading in December in Alajuela?
Average temperature in December
Alajuela, Costa Rica
- Average high temperature in December: 25.2°C
The warmest month (with the highest average high temperature) is April (28°C).
The month with the lowest average high temperature is October (23.8°C).
- Average low temperature in December: 15.7°C
The month with the highest average low temperature is May (18.3°C).
The coldest month (with the lowest average low temperature) is January (15.2°C).
Average pressure in December
Alajuela, Costa Rica
- Average pressure in December: 1011.6mbar
The month with the highest atmospheric pressure is January (1012.2mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).
Average wind speed in December
Alajuela, Costa Rica
- Average wind speed in December: 9km/h
The windiest month (with the highest average wind speed) is February (10.9km/h).
The calmest month (with the lowest average wind speed) is September (3.9km/h).
Average humidity in December
Alajuela, Costa Rica
- Average humidity in December: 81%
The month with the highest relative humidity is October (90%).
The month with the lowest relative humidity is March (71%).
Average rainfall in December
Alajuela, Costa Rica
- Average rainfall in December: 62mm
The wettest month (with the highest rainfall) is October (421mm).
The driest month (with the least rainfall) is February (25mm).
Average rainfall days in December
Alajuela, Costa Rica
- Average rainfall days in December: 21 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (12.3 days).
Average daylight in December /
Average sunshine in December
Alajuela, Costa Rica
- Average daylight in December: 11h and 3min
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 30min).
- Average sunshine in December: 8h and 2min
The month with the most sunshine is February (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 6h and 12min).
Average sunshine days in December
Alajuela, Costa Rica
- Average sunshine days in December: 6.5 days
The month with the most sunshine days is February (11.9 days).
The month with the least sunshine days is September (0.4 days).
Average UV index in December
Alajuela, Costa Rica
- Average UV index in December: 5
The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are January, February, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in December
Alajuela, Costa Rica
- Average cloud cover in December: 38
The month with the most cloud cover is October (Cloud cover 62).
The month with the least cloud cover is February (Cloud cover 23).
Average visibility in December
Alajuela, Costa Rica
- Average visibility in December: 8km
The months with the highest visibility are January, February, March and April (9km).
The months with the lowest visibility are September and October (6km).
Alajuela, Costa Rica
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