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 onset of December manifests an average high-temperature of a still moderately hot 26.5°C (79.7°F), demonstrating a minor variation from the preceding month. December witnesses an average nighttime temperature of 17.2°C (63°F) in Rosales, Costa Rica.Humidity
In December, the average relative humidity in Rosales is 81%.Rainfall
In Rosales, in December, during 18.3 rainfall days, 46mm (1.81") of precipitation is typically accumulated. In Rosales, Costa Rica, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.Daylight
The month with the shortest days is December, with an average of 11h and 36min of daylight.On the first day of December in Rosales, sunrise is at 05:39 and sunset at 17:14. On the last day of the month, sunrise is at 05:54 and sunset at 17:27 CST.
Sunshine
In Rosales, the average sunshine in December is 8.7h.UV index
January through April, June, July, September, October and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 6 in December translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What is the temperature in December in Rosales?
What is the average humidity in December in Rosales?
How much does it rain in Rosales in December?
What is the month with the shortest days in Rosales?
How many hours of daylight does Rosales have in December?
When are sunrise and sunset in December in Rosales?
How long on average sun shines in December in Rosales?
What is the month with the highest UV index in Rosales?
How high is the UV index in December in Rosales?
Average temperature in December
Rosales, Costa Rica
- Average high temperature in December: 26.5°C
The warmest months (with the highest average high temperature) are March and April (29.7°C).
The month with the lowest average high temperature is October (25.4°C).
- Average low temperature in December: 17.2°C
The month with the highest average low temperature is May (19.8°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in December
Rosales, Costa Rica
- Average pressure in December: 1011.5mbar
The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).
Average wind speed in December
Rosales, Costa Rica
- Average wind speed in December: 8.7km/h
The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest month (with the lowest average wind speed) is September (3.8km/h).
Average humidity in December
Rosales, Costa Rica
- Average humidity in December: 81%
The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is March (70%).
Average rainfall in December
Rosales, Costa Rica
- Average rainfall in December: 46mm
The wettest month (with the highest rainfall) is October (396mm).
The driest month (with the least rainfall) is February (17mm).
Average rainfall days in December
Rosales, Costa Rica
- Average rainfall days in December: 18.3 days
The month with the highest number of rainy days is October (30.2 days).
The month with the least rainy days is February (10.3 days).
Average daylight in December /
Average sunshine in December
Rosales, 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: 8h and 4min
The month with the most sunshine is March (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).
Average sunshine days in December
Rosales, Costa Rica
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is January (16.7 days).
The month with the least sunshine days is September (0.5 days).
Average UV index in December
Rosales, Costa Rica
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, June, July, September, October and December (UV index 6).
The months with the lowest UV index are May, August and November (UV index 5).
Average cloud cover in December
Rosales, Costa Rica
- Average cloud cover in December: 33
The month with the most cloud cover is October (Cloud cover 54).
The month with the least cloud cover is February (Cloud cover 19).
Average visibility in December
Rosales, Costa Rica
- Average visibility in December: 9km
The months with the highest visibility are February and March (10km).
The months with the lowest visibility are August, September, October and November (7km).
Rosales, Costa Rica
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