December weather forecast and climate
Saint-Marc, Haiti

Weather in December

December, the first month of the winter, in Saint-Marc, is still a warm month, with average temperature fluctuating between 27.7°C (81.9°F) and 20.5°C (68.9°F).

Temperature

In Saint-Marc, the average high-temperature is practically the same as in November - a still moderately hot 27.7°C (81.9°F). In December, in Saint-Marc, the average low-temperature is 20.5°C (68.9°F).

Heat index

In December, the average heat index is appraised at a tropical 31.2°C (88.2°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. 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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, differences in body mass, height, and shape, clothing, and wind affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In December, the average relative humidity in Saint-Marc is 79%.

Rainfall

Months with the least rainfall in Saint-Marc are January and December Rain falls for 8.5 days and accumulates 13mm (0.51") of rain.

Sea temperature

In Saint-Marc, the average seawater temperature in December is 28.3°C (82.9°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The month with the shortest days in Saint-Marc, Haiti, is December, with an average of 11h of daylight.

Sunshine

In December, the average sunshine is 7.4h.

UV index

January through March, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Saint-Marc, Haiti. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in December in Saint-Marc?

In Saint-Marc, Haiti, in December, the average high-temperature is 27.7°C (81.9°F), and the average low-temperature is 20.5°C (68.9°F). In December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is appraised at 31.2°C (88.2°F).

What is the average humidity in December in Saint-Marc?

In Saint-Marc, the average relative humidity in December is 79%.

What is the driest month in Saint-Marc?

January and December are months with the least rain in Saint-Marc, Haiti, when the rain falls for 8.5 days and typically aggregates up to 13mm (0.51") of rain.

How much does it rain in Saint-Marc in December?

In Saint-Marc, Haiti, during December, the rain falls for 8.5 days and regularly aggregates up to 13mm (0.51") of precipitation.

What is the sea water temperature in December in Saint-Marc?

In Saint-Marc, Haiti, the average seawater temperature in December is 28.3°C (82.9°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the month with the shortest days in Saint-Marc?

With an average of 11h of daylight, December has the shortest days of the year.

How many hours of daylight does Saint-Marc have in December?

In Saint-Marc, the average length of the day in December is 11h.

How many hours of sunshine does Saint-Marc have in December?

In December, the average sunshine in Saint-Marc is 7.4h.

What is the month with the lowest UV index in Saint-Marc?

Months with the lowest UV index in Saint-Marc are January through March, October through December, with an average maximum UV index of 6.

What is the UV index reading in December in Saint-Marc?

In Saint-Marc, Haiti, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in December
Saint-Marc, Haiti

Average temperature in December - Saint-Marc, Haiti
  • Average high temperature in December: 27.7°C

The warmest month (with the highest average high temperature) is July (30.7°C).
The month with the lowest average high temperature is January (27.3°C).

  • Average low temperature in December: 20.5°C

The month with the highest average low temperature is July (23.5°C).
The coldest month (with the lowest average low temperature) is January (20.1°C).

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Average pressure in December
Saint-Marc, Haiti

Average pressure in December - Saint-Marc, Haiti
  • Average pressure in December: 1015.5mbar

The month with the highest atmospheric pressure is January (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).

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Average wind speed in December
Saint-Marc, Haiti

Average wind speed in December - Saint-Marc, Haiti
  • Average wind speed in December: 10.3km/h

The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is September (7km/h).

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Average humidity in December
Saint-Marc, Haiti

Average humidity in December - Saint-Marc, Haiti
  • Average humidity in December: 79%

The month with the highest relative humidity is November (81%).
Months with the lowest relative humidity are March and April (74%).

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Average rainfall in December
Saint-Marc, Haiti

Average rainfall in December - Saint-Marc, Haiti
  • Average rainfall in December: 13mm

The wettest month (with the highest rainfall) is May (118mm).
The driest months (with the least rainfall) are January and December (13mm).

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Average rainfall days in December
Saint-Marc, Haiti

Average rainfall days in December - Saint-Marc, Haiti
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is May (25.3 days).
The month with the least rainy days is December (8.5 days).

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Average sea temperature in December
Saint-Marc, Haiti

Average sea temperature in December - Saint-Marc, Haiti
  • Average sea temperature in December: 28.3°C

The best month for swimming (with the highest average sea temperature) is September (29.9°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
Saint-Marc, Haiti

Average daylight in December / Average sunshine in December - Saint-Marc, Haiti
  • Average daylight in December: 11h

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in December: 7.4h

Months with the most sunshine are July and August (Average sunshine: 11.3h).
Months with the least sunshine are January and February (Average sunshine: 7.2).

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Average sunshine days in December
Saint-Marc, Haiti

Average sunshine days in December - Saint-Marc, Haiti
  • Average sunshine days in December: 20.4 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is September (3.2 days).

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Average UV index in December
Saint-Marc, Haiti

Average UV index in December - Saint-Marc, Haiti
  • Average UV index in December: 6

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

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Average cloud cover in December
Saint-Marc, Haiti

Average cloud cover in December - Saint-Marc, Haiti
  • Average cloud cover in December: 18

The month with the most cloud cover is May (Cloud cover 32).
The month with the least cloud cover is December (Cloud cover 18).

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Average visibility in December
Saint-Marc, Haiti

Average visibility in December - Saint-Marc, Haiti
  • Average visibility in December: 10km

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

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