December weather forecast
Port-au-Prince, Haiti

A stack of structures on a hillside in Port-au-Prince, Haiti
A stack of structures on a hillside in Port-au-Prince, Haiti

Weather in December

December, the first month of the winter in Port-au-Prince, is also a moderately hot month, with temperature in the range of an average high of 27.8°C (82°F) and an average low of 18.6°C (65.5°F).

Temperature

In Port-au-Prince, the average high-temperature in December is practically the same as in November - a still moderately hot 27.8°C (82°F). In Port-au-Prince, in December, the average low-temperature is 18.6°C (65.5°F).

Heat index

In December, the average heat index is estimated at a hot 31°C (87.8°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like clothing, pregnancy, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Port-au-Prince, during 10.5 rainfall days, 19mm (0.75") of precipitation is typically accumulated. Throughout the year, in Port-au-Prince, there are 227.4 rainfall days, and 904mm (35.59") of precipitation is accumulated.

Sea temperature

In Port-au-Prince, the average water temperature is 28.3°C (82.9°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The month with the shortest days in Port-au-Prince is December, with an average of 11h and 2min of daylight.
On the first day of December, sunrise is at 06:05 and sunset at 17:11. On the last day of the month, sunrise is at 06:21 and sunset at 17:23 EST.

Sunshine

In Port-au-Prince, the average sunshine in December is 7.3h.

UV index

January through May, July through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Port-au-Prince?

In Port-au-Prince, Haiti, in December, the average high-temperature is 27.8°C (82°F), and the average low-temperature is 18.6°C (65.5°F). in December, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 31°C (87.8°F).

What is the average humidity in December in Port-au-Prince?

In December, the average relative humidity is 76%.

How much does it rain in Port-au-Prince in December?

In Port-au-Prince, Haiti, in December, it is raining for 10.5 days, with typically 19mm (0.75") of accumulated precipitation.

How warm is the water in December in Port-au-Prince?

In December, the average sea temperature in Port-au-Prince is 28.3°C (82.9°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 Port-au-Prince?

December has the shortest days of the year in Port-au-Prince, with an average of 11h and 2min of daylight.

What is the average length of the day in December in Port-au-Prince?

The average day length in December in Port-au-Prince is 11h and 2min.

When are sunrise and sunset in December in Port-au-Prince?

On the first day of December in Port-au-Prince, sunrise is at 06:05 and sunset at 17:11. On the last day of the month, sunrise is at 06:21 and sunset at 17:23 EST.

How many hours of sunshine does Port-au-Prince have in December?

The average sunshine duration in December is 7.3h.

When is the lowest UV index in Port-au-Prince?

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

What is the UV index intensity in December in Port-au-Prince?

The average daily maximum UV index in December in Port-au-Prince is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Average temperature in December
Port-au-Prince, Haiti

Average temperature in December - Port-au-Prince, Haiti
  • Average high temperature in December: 27.8°C

The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (27.6°C).

  • Average low temperature in December: 18.6°C

The months with the highest average low temperature are August and September (21.3°C).
The coldest month (with the lowest average low temperature) is January (18.2°C).

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Average pressure in December
Port-au-Prince, Haiti

Average pressure in December - Port-au-Prince, Haiti
  • Average pressure in December: 1015.2mbar

The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).

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Average wind speed in December
Port-au-Prince, Haiti

Average wind speed in December - Port-au-Prince, Haiti
  • Average wind speed in December: 7.9km/h

The windiest month (with the highest average wind speed) is June (9.2km/h).
The calmest month (with the lowest average wind speed) is September (6.5km/h).

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Average humidity in December
Port-au-Prince, Haiti

Average humidity in December - Port-au-Prince, Haiti
  • Average humidity in December: 76%

The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is February (72%).

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Average rainfall in December
Port-au-Prince, Haiti

Average rainfall in December - Port-au-Prince, Haiti
  • Average rainfall in December: 19mm

The wettest month (with the highest rainfall) is May (141mm).
The driest month (with the least rainfall) is January (12mm).

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Average rainfall days in December
Port-au-Prince, Haiti

Average rainfall days in December - Port-au-Prince, Haiti
  • Average rainfall days in December: 10.5 days

The months with the highest number of rainy days are April and October (24.4 days).
The month with the least rainy days is January (9.9 days).

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Average sea temperature in December
Port-au-Prince, Haiti

Average sea temperature in December - Port-au-Prince, Haiti
  • Average sea temperature in December: 28.3°C

The best month for swimming (with the highest average sea temperature) is September (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).

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Average daylight in December /
Average sunshine in December
Port-au-Prince, Haiti

Average daylight in December / Average sunshine in December - Port-au-Prince, Haiti
  • Average daylight in December: 11h and 2min

The month with the longest days is June (Average daylight: 13h and 14min).
The month with the shortest days is December (Average daylight: 11h and 2min).

  • Average sunshine in December: 7h and 18min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 7h and 12min).

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Average sunshine days in December
Port-au-Prince, Haiti

Average sunshine days in December - Port-au-Prince, Haiti
  • Average sunshine days in December: 19 days

The month with the most sunshine days is December (19 days).
The month with the least sunshine days is April (3.3 days).

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Average UV index in December
Port-au-Prince, Haiti

Average UV index in December - Port-au-Prince, Haiti
  • Average UV index in December: 6

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, March, April, May, July, August, September, October, November and December (UV index 6).

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Average cloud cover in December
Port-au-Prince, Haiti

Average cloud cover in December - Port-au-Prince, Haiti
  • Average cloud cover in December: 21

The month with the most cloud cover is April (Cloud cover 35).
The month with the least cloud cover is December (Cloud cover 21).

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Average visibility in December
Port-au-Prince, Haiti

Average visibility in December - Port-au-Prince, Haiti
  • Average visibility in December: 9km

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

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