December weather forecast
San Vicente, Costa Rica

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Weather in December

December in San Vicente signals the awaited return of the dry season, dropping rainfall averages to a mere 46mm (1.81"). Wind speeds escalate to a brisk 8.7km/h (5.4mph), providing a refreshing alternative to the previously humid months. The average UV index rises back to 6, shining brighter skies for the holiday season. As the year closes, December’s weather in San Vicente, Costa Rica highlights a soothing transition from the heavy rainfall season, offering a pleasant start to the new year.

Temperature

During December, San Vicente records an average high-temperature of a still warm 26.5°C (79.7°F), marking a slight divergence from November's 25.9°C (78.6°F). Throughout the December nights, San Vicente encounters a low-temperature of 17.2°C (63°F).

Humidity

In December, the average relative humidity in San Vicente is 81%.

Rainfall

In December, in San Vicente, the rain falls for 18.3 days. Throughout December, 46mm (1.81") of precipitation is accumulated. Throughout the year, there are 272 rainfall days, and 2217mm (87.28") of precipitation is accumulated.

Daylight

The month with the shortest days in San Vicente is December, with an average of 11h and 36min of daylight.
On the first day of December in San Vicente, sunrise is at 05:37 and sunset at 17:12. On the last day of the month, sunrise is at 05:52 and sunset at 17:26 CST.

Sunshine

The average sunshine in December in San Vicente 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 estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 6 in December suggests the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What are December temperatures in San Vicente?

The high-temperature, in December, in San Vicente, records 26.5°C (79.7°F), while the low-temperature is 17.2°C (63°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in May is evaluated at 32°C (89.6°F).

What is the average humidity in December in San Vicente?

In December, the average relative humidity in San Vicente, Costa Rica, is 81%.

How many days does it rain in December in San Vicente?

In San Vicente, in December, during 18.3 rainfall days, 46mm (1.81") of precipitation is typically accumulated.

What is the month with the shortest days in San Vicente?

The month with the shortest days is December, with an average of 11h and 36min of daylight.

What is the average length of the day in December in San Vicente?

In San Vicente, Costa Rica, the average day length in December is 11h and 34min.

When are sunrise and sunset in December in San Vicente?

In December, on the first day of the month, sunrise is at 05:37 and sunset at 17:12. On the last day of the month, in San Vicente, sunrise is at 05:52 and sunset at 17:26 CST.

How long on average sun shines in December in San Vicente?

In San Vicente, Costa Rica, the average sunshine duration in December is 8.7h.

What is the month with the highest UV index in San Vicente?

The months with the highest UV index in San Vicente, Costa Rica, are January through April, June, July, September, October and December, with an average maximum UV index of 6.

What is the UV index reading in December in San Vicente?

In San Vicente, Costa Rica, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.

Average temperature in December
San Vicente, Costa Rica

Average temperature in December - San Vicente, 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).

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Average pressure in December
San Vicente, Costa Rica

Average pressure in December - San Vicente, 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).

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Average wind speed in December
San Vicente, Costa Rica

Average wind speed in December - San Vicente, 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).

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Average humidity in December
San Vicente, Costa Rica

Average humidity in December - San Vicente, 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%).

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Average rainfall in December
San Vicente, Costa Rica

Average rainfall in December - San Vicente, 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).

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Average rainfall days in December
San Vicente, Costa Rica

Average rainfall days in December - San Vicente, 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).

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Average daylight in December /
Average sunshine in December
San Vicente, Costa Rica

Average daylight in December / Average sunshine in December - San Vicente, 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).

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Average sunshine days in December
San Vicente, Costa Rica

Average sunshine days in December - San Vicente, 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).

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Average UV index in December
San Vicente, Costa Rica

Average UV index in December - San Vicente, 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).

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Average cloud cover in December
San Vicente, Costa Rica

Average cloud cover in December - San Vicente, 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).

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Average visibility in December
San Vicente, Costa Rica

Average visibility in December - San Vicente, 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).

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San Vicente, Costa Rica

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