December weather forecast
Río Segundo, Costa Rica

December

Weather in December

December, the first month of the winter in Río Segundo, is also a moderately hot month, with an average temperature varying between 25.1°C (77.2°F) and 15.7°C (60.3°F).

Temperature

In December, Río Segundo experiences a minor shift in meteorological conditions with average high-temperatures marked at a still moderately hot 25.1°C (77.2°F), closely mirroring the climate in November. Throughout the month of December, Río Segundo witnesses an average temperature of 15.7°C (60.3°F).

Humidity

In Río Segundo, Costa Rica, the average relative humidity in December is 81%.

Rainfall

In Río Segundo, in December, during 20.8 rainfall days, 61mm (2.4") of precipitation is typically accumulated. Throughout the year, there are 289.2 rainfall days, and 2603mm (102.48") 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 17:13. On the last day of the month, sunrise is at 05:53 and sunset at 17:26 CST.

Sunshine

The average sunshine in December in Río Segundo is 8.3h.

UV index

The months with the lowest UV index in Río Segundo are January, February, May through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in December interprets into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

What is the temperature in December in Río Segundo?
An average high-temperature, in December, in Río Segundo, is 25.1°C (77.2°F) and the average low-temperature is 15.7°C (60.3°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in April is computed to be 31°C (87.8°F).
What is the average humidity in December in Río Segundo?
In Río Segundo, the average relative humidity in December is 81%.
How much does it rain in Río Segundo in December?
In Río Segundo, in December, it is raining for 20.8 days, with typically 61mm (2.4") of accumulated precipitation.
What is the month with the shortest days in Río Segundo?
With an average of 11h and 36min of daylight, December has the shortest days of the year in Río Segundo.
How many hours of daylight does Río Segundo have in December?
In Río Segundo, the average day length in December is 11h and 33min.
When is the sunrise / sunset in December in Río Segundo?
In December, on the first day of the month, sunrise is at 05:38 and sunset at 17:13. On the last day of the month, in Río Segundo, Costa Rica, sunrise is at 05:53 and sunset at 17:26 CST.
How many hours of sunshine does Río Segundo have in December?
The average sunshine duration in December in Río Segundo is 8.3h.
When is the lowest UV index in Río Segundo?
The months with the lowest UV index in Río Segundo, Costa Rica, are January, February, May through December, with an average maximum UV index of 5.
What is the UV index intensity in December in Río Segundo?
In December, the average daily maximum UV index in Río Segundo is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Río Segundo, Costa Rica
Average temperature in December
Río Segundo, Costa Rica
  • Average high temperature in December: 25.1°C

The warmest month (with the highest average high temperature) is April (28°C).
The month with the lowest average high temperature is October (23.7°C).

  • Average low temperature in December: 15.7°C

The month with the highest average low temperature is May (18.5°C).
The coldest month (with the lowest average low temperature) is January (15.3°C).

Average pressure in December - Río Segundo, Costa Rica
Average pressure in December
Río Segundo, 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 - Río Segundo, Costa Rica
Average wind speed in December
Río Segundo, Costa Rica
  • Average wind speed in December: 9.1km/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 - Río Segundo, Costa Rica
Average humidity in December
Río Segundo, 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 - Río Segundo, Costa Rica
Average rainfall in December
Río Segundo, Costa Rica
  • Average rainfall in December: 61mm

The wettest month (with the highest rainfall) is October (429mm).
The driest month (with the least rainfall) is February (24mm).

Average rainfall days in December - Río Segundo, Costa Rica
Average rainfall days in December
Río Segundo, Costa Rica
  • Average rainfall days in December: 20.8 days

The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (11.8 days).

Average daylight in December / Average sunshine in December - Río Segundo, Costa Rica
Average daylight in December /
Average sunshine in December
Río Segundo, 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 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 6min).

Average sunshine days in December - Río Segundo, Costa Rica
Average sunshine days in December
Río Segundo, Costa Rica
  • Average sunshine days in December: 7.5 days

The month with the most sunshine days is February (13.1 days).
The month with the least sunshine days is July (0.3 days).

Average UV index in December - Río Segundo, Costa Rica
Average UV index in December
Río Segundo, 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 - Río Segundo, Costa Rica
Average cloud cover in December
Río Segundo, Costa Rica
  • Average cloud cover in December: 38

The month with the most cloud cover is October (Cloud cover 63).
The month with the least cloud cover is February (Cloud cover 23).

Average visibility in December - Río Segundo, Costa Rica
Average visibility in December
Río Segundo, 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).

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