December weather forecastGressier, Haiti

December

Weather in December

December marks the year-end in Gressier with a significant reduction in rainfall compared to the preceding November, offering some reprieve from the wet season. This decrease in rainfall bridges the weather conditions between November and the forthcoming January. Being the year-end, December sees a further dip in atmospheric and sea temperatures, heralding the incoming winter season. Remaining comfortable for various activities, December's daylight hours decrease slightly but remain stable. Gressier basks in the glory of pleasant winter sunshine as one year leads to the next, making it an ideal destination to celebrate the holiday season.

Temperature

Gressier, Haiti, records an average high-temperature of a still moderately hot 27.8°C (82°F) as December arrives, nearly mirroring the previous month's climate. Gressier's December nights cool down to an average low-temperature of 18.6°C (65.5°F).

Heat index

In December, the average heat index is evaluated at a hot 31°C (87.8°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

The average relative humidity in December in Gressier is 76%.

Rainfall

In Gressier, during December, the rain falls for 10.5 days and regularly aggregates up to 19mm (0.75") of precipitation. In Gressier, during the entire year, the rain falls for 227.4 days and collects up to 904mm (35.59") of precipitation.

Sea temperature

In Gressier, Haiti, in December, the average water temperature is 28.3°C (82.9°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

December has the shortest days of the year, with an average of 11h and 0min of daylight.
On the first day of the month, sunrise is at 06:06 and sunset at 17:12. On the last day of December, sunrise is at 06:22 and sunset at 17:24 EST.

Sunshine

In Gressier, the average sunshine in December is 7.3h.

UV index

The months with the lowest UV index are January through May, July through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 6 suggests this advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Watch out! Reflections from sand and water can surge UV radiation exposure.

Frequently asked questions

In Gressier, 27.8°C (82°F) is the average high-temperature and 18.6°C (65.5°F) is the average low-temperature during December. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in December is evaluated at 31°C (87.8°F).

In Gressier, Haiti, the average relative humidity in December is 76%.

In Gressier, Haiti, during December, the rain falls for 10.5 days and regularly aggregates up to 19mm (0.75") of precipitation.

In Gressier, Haiti, the average seawater temperature in December 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.

With an average of 11h and 0min of daylight, December has the shortest days of the year in Gressier, Haiti.

The average day length in December in Gressier is 11h and 2min.

In December, on the first day of the month, sunrise is at 06:06 and sunset at 17:12. On the last day of the month, in Gressier, Haiti, sunrise is at 06:22 and sunset at 17:24 EST.

The average sunshine duration in December in Gressier, Haiti, is 7.3h.

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

In Gressier, Haiti, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Gressier, 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).

Average pressure in December
Gressier, 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).

Average wind speed in December
Gressier, 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).

Average humidity in December
Gressier, 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%).

Average rainfall in December
Gressier, 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).

Average rainfall days in December
Gressier, 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).

Average sea temperature in December
Gressier, 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 (26.9°C).

Average daylight in December /
Average sunshine in December
Gressier, Haiti

  • Average daylight in December: 11h and 0min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • 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).

Average sunshine days in December
Gressier, 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).

Average UV index in December
Gressier, 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).

Average cloud cover in December
Gressier, 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).

Average visibility in December
Gressier, 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).