December weather forecast
Guadalupe, Costa Rica

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Weather in December

December in Guadalupe marks the end of the year with an observable change in weather conditions. Rainfall decreases substantially to a mere 67mm (2.64"), making it the driest month of the year. The average high temperature climbs to 27°C (80.6°F), restoring the gentle warmth of earlier months. Simultaneously, daylight hours and relative humidity show a distinct reduction, reverting to levels similar to those at the year's start. With these changes, December welcomes the arrival of the dry season, closing the cycle of Guadalupe's diverse weather patterns.

Temperature

The start of December in Guadalupe sees the average high-temperature at a still warm 27°C (80.6°F), showing little difference from November's 25.9°C (78.6°F). Throughout the month of December, Guadalupe sees a steady low-temperature average of 20.5°C (68.9°F).

Heat index

For December, the heat index is computed to be 29°C (84.2°F). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.
Note that heat index values are valued for light wind and location in the shade. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

In December, the average relative humidity in Guadalupe is 77%.

Rainfall

In December, the rain falls for 20.9 days. Throughout December, 67mm (2.64") of precipitation is accumulated. In Guadalupe, during the entire year, the rain falls for 290 days and collects up to 2270mm (89.37") of precipitation.

Daylight

December has the shortest days of the year in Guadalupe, with an average of 11h and 36min of daylight.
On the first day of the month, sunrise is at 05:37 and sunset at 17:13. On the last day of December, sunrise is at 05:52 and sunset at 17:26 CST.

Sunshine

The average sunshine in December is 9.2h.

UV index

The months with the highest UV index in Guadalupe are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What are the temperatures in Guadalupe in December?

The average high-temperature, in December, in Guadalupe, is 27°C (80.6°F), while the average low-temperature is 20.5°C (68.9°F). In December, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 29°C (84.2°F).

What is the average humidity in December in Guadalupe?

In Guadalupe, the average relative humidity in December is 77%.

How many days does it rain in December in Guadalupe?

In Guadalupe, Costa Rica, during December, the rain falls for 20.9 days and regularly aggregates up to 67mm (2.64") of precipitation.

What is the month with the shortest days in Guadalupe?

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

How many hours of daylight does Guadalupe have in December?

The average day length in December is 11h and 34min.

When is the sunrise / sunset in December in Guadalupe?

In December, on the first day of the month, sunrise is at 05:37 and sunset at 17:13. On the last day of the month, in Guadalupe, sunrise is at 05:52 and sunset at 17:26 CST.

How long on average sun shines in December in Guadalupe?

In Guadalupe, Costa Rica, the average sunshine duration in December is 9.2h.

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

The months with the highest UV index are January through December, with an average maximum UV index of 6.

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

January through December, with an average maximum UV index of 6, are months with the lowest UV index in Guadalupe, Costa Rica.

What is the UV index intensity in December in Guadalupe?

The average daily maximum UV index in December in Guadalupe, Costa Rica, is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.

Average temperature in December
Guadalupe, Costa Rica

Average temperature in December - Guadalupe, Costa Rica
  • Average high temperature in December: 27°C

The warmest month (with the highest average high temperature) is March (29.3°C).
The month with the lowest average high temperature is October (25.3°C).

  • Average low temperature in December: 20.5°C

The month with the highest average low temperature is April (21.9°C).
The coldest months (with the lowest average low temperature) are January, February and December (20.5°C).

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Average pressure in December
Guadalupe, Costa Rica

Average pressure in December - Guadalupe, Costa Rica
  • Average pressure in December: 1011.3mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The months with the lowest atmospheric pressure are October and November (1010.9mbar).

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Average wind speed in December
Guadalupe, Costa Rica

Average wind speed in December - Guadalupe, Costa Rica
  • Average wind speed in December: 6.4km/h

The windiest months (with the highest average wind speed) are February and March (7.6km/h).
The calmest month (with the lowest average wind speed) is June (5.2km/h).

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Average humidity in December
Guadalupe, Costa Rica

Average humidity in December - Guadalupe, Costa Rica
  • Average humidity in December: 77%

The months with the highest relative humidity are September and October (86%).
The months with the lowest relative humidity are February and March (68%).

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Average rainfall in December
Guadalupe, Costa Rica

Average rainfall in December - Guadalupe, Costa Rica
  • Average rainfall in December: 67mm

The wettest month (with the highest rainfall) is October (440mm).
The driest month (with the least rainfall) is February (18mm).

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Average rainfall days in December
Guadalupe, Costa Rica

Average rainfall days in December - Guadalupe, Costa Rica
  • Average rainfall days in December: 20.9 days

The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (9.7 days).

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

Average daylight in December / Average sunshine in December - Guadalupe, 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 1min

The month with the most sunshine is February (Average sunshine: 9h and 48min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).

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Average sunshine days in December
Guadalupe, Costa Rica

Average sunshine days in December - Guadalupe, Costa Rica
  • Average sunshine days in December: 6.9 days

The month with the most sunshine days is February (13.7 days).
The month with the least sunshine days is September (0.2 days).

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Average UV index in December
Guadalupe, Costa Rica

Average UV index in December - Guadalupe, Costa Rica
  • Average UV index in December: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).

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Average cloud cover in December
Guadalupe, Costa Rica

Average cloud cover in December - Guadalupe, Costa Rica
  • Average cloud cover in December: 27

The month with the most cloud cover is October (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 15).

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Average visibility in December
Guadalupe, Costa Rica

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

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

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Guadalupe, Costa Rica

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