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
Guacimo, Costa Rica, marks the onset of December with an average high-temperature of a still warm 27.9°C (82.2°F), subtly divergent from November's 28.9°C (84°F). The average temperature in Guacimo during December nights dips to an agreeable 22.6°C (72.7°F).Heat index
The average heat index in December is appraised at a tropical 32°C (89.6°F). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Understanding the heat index involves considering values for shaded locales with light wind. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Humidity
In Guacimo, the average relative humidity in December is 79%.Rainfall
The month with the most rainfall in Guacimo is December, when the rain falls for 20.7 days and typically aggregates up to 214mm (8.43") of precipitation.Daylight
The month with the shortest days is December, with an average of 11h and 30min of daylight.On the first day of the month, sunrise is at 05:36 and sunset at 17:11. On the last day of December, sunrise is at 05:51 and sunset at 17:24 CST.
Sunshine
The month with the least sunshine is December, with an average of 6.3h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, a regular UV index of 6 translates into these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Guacimo?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Guacimo have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Guacimo, Costa Rica
- Average high temperature in December: 27.9°C
The warmest month (with the highest average high temperature) is September (30.6°C).
The month with the lowest average high temperature is January (27.4°C).
- Average low temperature in December: 22.6°C
The month with the highest average low temperature is June (24.7°C).
The coldest month (with the lowest average low temperature) is January (22.3°C).
Average pressure in December
Guacimo, 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 (1010.7mbar).
Average wind speed in December
Guacimo, Costa Rica
- Average wind speed in December: 7.5km/h
The windiest months (with the highest average wind speed) are February and March (8.9km/h).
The calmest months (with the lowest average wind speed) are August and September (6.8km/h).
Average humidity in December
Guacimo, Costa Rica
- Average humidity in December: 79%
The month with the highest relative humidity is November (80%).
The months with the lowest relative humidity are April and September (76%).
Average rainfall in December
Guacimo, Costa Rica
- Average rainfall in December: 214mm
The wettest month (with the highest rainfall) is December (214mm).
The driest month (with the least rainfall) is September (59mm).
Average rainfall days in December
Guacimo, Costa Rica
- Average rainfall days in December: 20.7 days
The month with the highest number of rainy days is July (23.5 days).
The month with the least rainy days is September (15.4 days).
Average daylight in December /
Average sunshine in December
Guacimo, 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: 6h and 2min
The month with the most sunshine is September (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in December
Guacimo, Costa Rica
- Average sunshine days in December: 8.7 days
The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is July (7 days).
Average UV index in December
Guacimo, Costa Rica
- Average UV index in December: 6
The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).
Average cloud cover in December
Guacimo, Costa Rica
- Average cloud cover in December: 55
The month with the most cloud cover is December (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in December
Guacimo, Costa Rica
- Average visibility in December: 9km
The months with the highest visibility are February, March, April, May, June, August, September and October (10km).
The months with the lowest visibility are January, July, November and December (9km).
