December weather forecast
Rivière-Salée, Martinique

December

Weather in December

December marks the end of the year with a decrease in rainfall to 47mm (1.85"), and provides a befitting close to the rainy half of the year. Extended daylight hours offer ample time to engage in outdoor pursuits. Consistent visibility throughout the year makes way for clear, unobstructed views of the picturesque landscape. December is engulfed in a comforting milieu, created by the mild temperatures and subdued wind speeds. Atmospheric pressure undergoes insignificant alterations, implying an uninterrupted continuity of good weather conditions.

Temperature

Rivière-Salée records an average high-temperature of a still warm 27.5°C (81.5°F) in December, closely mirroring the climate of the previous month. Rivière-Salée encounters a negligible difference from daytime peaks throughout the December nights, with a low-temperature average of 26.2°C (79.2°F).

Heat index

The heat index value for December is calculated to be a tropical 30°C (86°F). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

The average relative humidity in December is 75%.

Rainfall

In Rivière-Salée, in December, it is raining for 20.8 days, with typically 47mm (1.85") of accumulated precipitation. In Rivière-Salée, Martinique, during the entire year, the rain falls for 252.3 days and collects up to 672mm (26.46") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 18min of daylight.
On the first day of the month, sunrise is at 06:13 and sunset at 17:32. On the last day of December, sunrise is at 06:28 and sunset at 17:45 AST.

Sunshine

The month with the least sunshine is December, with an average of 6.4h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 during December translates into the following directions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

What are the temperatures in December?
An average high-temperature, in December, in Rivière-Salée, is 27.5°C (81.5°F) and the average low-temperature is 26.2°C (79.2°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in December is calculated to be 30°C (86°F).
What is the average humidity in December?
In December, the average relative humidity is 75%.
How many days does it rain in December?
In December, the rain falls for 20.8 days. Throughout December, 47mm (1.85") of precipitation is accumulated.
What is the month with the shortest days?
With an average of 11h and 18min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
In December, the average day length is 11h and 17min.
When are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 06:13 and sunset at 17:32. On the last day of the month, sunrise is at 06:28 and sunset at 17:45 AST.
What is the month with the least sunshine?
With an average of 6.4h of sunshine, December has the least sunshine of the year.
How long on average sun shines in December?
In December, the average sunshine duration is 6.4h.
What is the month with the highest UV index?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
What are the months with the lowest UV index?
January through December, with an average maximum UV index of 7, are months with the lowest UV index.
How high is the UV index in December?
In December, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Rivière-Salée, Martinique
  • Average high temperature in December: 27.5°C

The warmest month (with the highest average high temperature) is September (29.3°C).
The month with the lowest average high temperature is February (26.8°C).

  • Average low temperature in December: 26.2°C

The months with the highest average low temperature are August and October (27.3°C).
The coldest month (with the lowest average low temperature) is March (24.8°C).

Average pressure in December
Rivière-Salée, Martinique
  • Average pressure in December: 1013.7mbar

The month with the highest atmospheric pressure is June (1015.3mbar).
The month with the lowest atmospheric pressure is November (1011.7mbar).

Average wind speed in December
Rivière-Salée, Martinique
  • Average wind speed in December: 24.5km/h

The windiest month (with the highest average wind speed) is January (26.2km/h).
The calmest month (with the lowest average wind speed) is September (18.6km/h).

Average humidity in December
Rivière-Salée, Martinique
  • Average humidity in December: 75%

The month with the highest relative humidity is November (77%).
The months with the lowest relative humidity are January, February and March (74%).

Average rainfall in December
Rivière-Salée, Martinique
  • Average rainfall in December: 47mm

The wettest month (with the highest rainfall) is September (86mm).
The driest months (with the least rainfall) are February and March (25mm).

Average rainfall days in December
Rivière-Salée, Martinique
  • Average rainfall days in December: 20.8 days

The month with the highest number of rainy days is August (24 days).
The month with the least rainy days is March (17 days).

Average daylight in December /
Average sunshine in December
Rivière-Salée, Martinique
  • Average daylight in December: 11h and 2min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in December: 6h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in December
Rivière-Salée, Martinique
  • Average sunshine days in December: 3.1 days

The month with the most sunshine days is March (6.3 days).
The month with the least sunshine days is November (1.6 days).

Average UV index in December
Rivière-Salée, Martinique
  • Average UV index in December: 7

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

Average cloud cover in December
Rivière-Salée, Martinique
  • Average cloud cover in December: 41

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 36).

Average visibility in December
Rivière-Salée, Martinique
  • 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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