December weather forecast
Herradura, Costa Rica

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Weather in December

Moving into December, Herradura's climate stabilizes as rainfall and humidity drop lower. With fewer days of rain recorded only at 16.3, the city begins to dry up. The sea temperature reads steady at 28°C (82.4°F), offering equally warm waters as any other time of the year. Famously known as the windy month, December experiences an uptick in wind speed to 9.1km/h (5.7mph). With Christmas around the corner and a comfortable climate to relish, expect vibrant celebrations and enchanting beach-activities in the city of Herradura, making it a fitting end to the year.

Temperature

The average high-temperature in Herradura during December registers at a still moderately hot 28.7°C (83.7°F), maintaining a close resemblance to the previous month. December nights in Herradura anticipate an average temperature of 24.6°C (76.3°F), a modest decline from the daytime.

Heat index

During December, the heat index is computed to be a hot 33°C (91.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

In December, the average relative humidity in Herradura is 75%.

Rainfall

In Herradura, Costa Rica, in December, during 16.3 rainfall days, 41mm (1.61") of precipitation is typically accumulated. In Herradura, during the entire year, the rain falls for 236.2 days and collects up to 1501mm (59.09") of precipitation.

Sea temperature

January, February, September through December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Herradura.
Note: For any water activity, surface water temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed perfect and extremely pleasing for enduring enjoyment.

Daylight

December has the shortest days of the year in Herradura, with an average of 11h and 36min of daylight.
On the first day of December in Herradura, sunrise is at 05:39 and sunset at 17:15. On the last day of the month, sunrise is at 05:54 and sunset at 17:29 CST.

Sunshine

In Herradura, the average sunshine in December is 9.4h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 7 in December leads to these recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Notice! Sand and water reflections contribute to a stronger UV exposure.
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Frequently asked questions

Is it hot in Herradura during December?

The high-temperature, in December, in Herradura, records 28.7°C (83.7°F), while the low-temperature is 24.6°C (76.3°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in December is computed to be 33°C (91.4°F).

What is the average humidity in December in Herradura?

In December, the average relative humidity in Herradura is 75%.

How many days does it rain in December in Herradura?

In Herradura, Costa Rica, in December, during 16.3 rainfall days, 41mm (1.61") of precipitation is typically accumulated.

When is the sea coldest in Herradura?

January, February, September through December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Herradura.

What is the water temperature in December in Herradura?

In Herradura, the average seawater temperature in December is 28°C (82.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the shortest days in Herradura?

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

What is the average length of the day in December in Herradura?

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

When is the sunrise / sunset in December in Herradura?

On the first day of December in Herradura, sunrise is at 05:39 and sunset at 17:15. On the last day of the month, sunrise is at 05:54 and sunset at 17:29 CST.

How long on average sun shines in December in Herradura?

In Herradura, Costa Rica, the average sunshine duration in December is 9.4h.

What are the months with the highest UV index in Herradura?

The months with the highest UV index are January through December, with an average maximum UV index of 7.

What are the months with the lowest UV index in Herradura?

The months with the lowest UV index in Herradura, Costa Rica, are January through December, with an average maximum UV index of 7.

How high is the UV index in December in Herradura?

In December, the average daily maximum UV index in Herradura, Costa Rica, is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in December
Herradura, Costa Rica

Average temperature in December - Herradura, Costa Rica
  • Average high temperature in December: 28.7°C

The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is October (28.1°C).

  • Average low temperature in December: 24.6°C

The months with the highest average low temperature are April and May (26.2°C).
The coldest month (with the lowest average low temperature) is January (24.5°C).

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Average pressure in December
Herradura, Costa Rica

Average pressure in December - Herradura, Costa Rica
  • Average pressure in December: 1011mbar

The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).

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Average wind speed in December
Herradura, Costa Rica

Average wind speed in December - Herradura, Costa Rica
  • Average wind speed in December: 8.1km/h

The windiest month (with the highest average wind speed) is March (9.7km/h).
The calmest month (with the lowest average wind speed) is June (7.6km/h).

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Average humidity in December
Herradura, Costa Rica

Average humidity in December - Herradura, Costa Rica
  • Average humidity in December: 75%

The months with the highest relative humidity are June and October (80%).
The months with the lowest relative humidity are February and March (68%).

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Average rainfall in December
Herradura, Costa Rica

Average rainfall in December - Herradura, Costa Rica
  • Average rainfall in December: 41mm

The wettest month (with the highest rainfall) is October (383mm).
The driest month (with the least rainfall) is February (11mm).

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Average rainfall days in December
Herradura, Costa Rica

Average rainfall days in December - Herradura, Costa Rica
  • Average rainfall days in December: 16.3 days

The month with the highest number of rainy days is October (26.1 days).
The month with the least rainy days is February (7.8 days).

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Average sea temperature in December
Herradura, Costa Rica

Average sea temperature in December - Herradura, Costa Rica
  • Average sea temperature in December: 28°C

The best months for swimming (with the highest average sea temperature) are March, April, May, June, July and August (29°C).
The coldest months (with the lowest average sea temperature) are January, February, September, October, November and December (28°C).

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Average daylight in December /
Average sunshine in December
Herradura, Costa Rica

Average daylight in December / Average sunshine in December - Herradura, 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: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is October (Average sunshine: 8h and 6min).

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Average sunshine days in December
Herradura, Costa Rica

Average sunshine days in December - Herradura, Costa Rica
  • Average sunshine days in December: 11.7 days

The month with the most sunshine days is March (18.6 days).
The month with the least sunshine days is May (4.3 days).

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Average UV index in December
Herradura, Costa Rica

Average UV index in December - Herradura, Costa Rica
  • Average UV index in December: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

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Average cloud cover in December
Herradura, Costa Rica

Average cloud cover in December - Herradura, Costa Rica
  • Average cloud cover in December: 25

The month with the most cloud cover is October (Cloud cover 44).
The month with the least cloud cover is February (Cloud cover 13).

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Average visibility in December
Herradura, Costa Rica

Average visibility in December - Herradura, Costa Rica
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, June, July, August, September, November and December (10km).
The months with the lowest visibility are May and October (9km).

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Herradura, Costa Rica

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