Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In Saint-Marc, the average high-temperature in December is practically the same as in November - a still warm 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 estimated at a hot 31°C (87.8°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity 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 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, metabolic differences, pregnancy). 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. 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 Saint-Marc, the average relative humidity in December is 79%.Rainfall
The 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 December, the average sea temperature in Saint-Marc 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 is December, with an average of 11h and 0min of daylight.On the first day of December, sunrise is at 06:07 and sunset at 17:11. On the last day of the month, sunrise is at 06:23 and sunset at 17:23 EST.
Sunshine
In Saint-Marc, the average sunshine in December 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. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 6 in December transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
FAQ
What is the temperature in December in Saint-Marc?
What is the average humidity in December in Saint-Marc?
What is the driest month in Saint-Marc?
How much does it rain in Saint-Marc in December?
What is the water temperature in December in Saint-Marc?
What is the month with the shortest days in Saint-Marc?
What is the average length of the day in December in Saint-Marc?
When are sunrise and sunset in December in Saint-Marc?
How many hours of sunshine does Saint-Marc have in December?
When is the lowest UV index in Saint-Marc?
How high is the UV index in December in Saint-Marc?
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).
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).
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).
Average humidity in December
Saint-Marc, Haiti
- Average humidity in December: 79%
The month with the highest relative humidity is November (81%).
The months with the lowest relative humidity are March and April (74%).
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).
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).
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).
Average daylight in December /
Average sunshine in December
Saint-Marc, Haiti
- Average daylight in December: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in December: 7h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 18min).
The months with the least sunshine are January and February (Average sunshine: 7h and 12min).
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).
Average UV index in December
Saint-Marc, Haiti
- Average UV index in December: 6
The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 6).
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).
Average visibility in December
Saint-Marc, Haiti
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
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