December weather forecast
Rosalie, Dominica

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Weather in December

December, the final month, brings cooler and gentler weather to Rosalie, Dominica. The average temperature experiences a significant drop from November, resulting in a more pleasant atmosphere. There is a noticeable drop in rainfall from 67mm (2.64") in November to 38mm (1.5") in December. With decreasing rainfall and gentle winds, December provides a serene setting. As the daylight hours reach their yearly low, the gentle weather sets the perfect backdrop for the holiday season.

Temperature

At the start of December, Rosalie's average high-temperature reaches a still moderately hot 27°C (80.6°F), subtly different from the preceding month. Throughout the nights in December, Rosalie notes an average low of 25.3°C (77.5°F), a small dip from the daytime peak.

Heat index

The heat index in December is calculated to be 29°C (84.2°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Understanding the heat index involves considering values for shaded locales with light wind. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

The average relative humidity in December is 76%.

Rainfall

In Rosalie, Dominica, during December, the rain falls for 18.3 days and regularly aggregates up to 38mm (1.5") of precipitation. In Rosalie, Dominica, during the entire year, the rain falls for 221.9 days and collects up to 570mm (22.44") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 12min of daylight.
On the first day of December, sunrise is at 06:15 and sunset at 17:32. On the last day of the month, sunrise is at 06:31 and sunset at 17:45 AST.

Sunshine

With an average of 6.6h of sunshine, December has the least sunshine of the year in Rosalie.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Rosalie. The months with the lowest UV index in Rosalie are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What is the average December temperature in Rosalie?

Rosalie in December has an average high-temperature of 27°C (80.6°F) and an average low-temperature of 25.3°C (77.5°F). In December, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is calculated to be 29°C (84.2°F).

What is the average humidity in December in Rosalie?

In December, the average relative humidity in Rosalie, Dominica, is 76%.

How much does it rain in Rosalie in December?

In Rosalie, Dominica, during December, the rain falls for 18.3 days and regularly aggregates up to 38mm (1.5") of precipitation.

What is the month with the shortest days in Rosalie?

December has the shortest days of the year, with an average of 11h and 12min of daylight.

What is the average length of the day in December in Rosalie?

The average day length in December in Rosalie is 11h and 14min.

When is the sunrise / sunset in December in Rosalie?

On the first day of December in Rosalie, Dominica, sunrise is at 06:15 and sunset at 17:32. On the last day of the month, sunrise is at 06:31 and sunset at 17:45 AST.

What is the month with the least sunshine in Rosalie?

The month with the least sunshine in Rosalie, Dominica, is December, with an average of 6.6h of sunshine.

How many hours of sunshine does Rosalie have in December?

In Rosalie, the average sunshine duration in December is 6.6h.

When is the highest UV index in Rosalie?

January through December, with an average maximum UV index of 7, are months with the highest UV index.

When is the lowest UV index in Rosalie?

The months with the lowest UV index in Rosalie, Dominica, are January through December, with an average maximum UV index of 7.

How high is the UV index in December in Rosalie?

The average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in December
Rosalie, Dominica

Average temperature in December - Rosalie, Dominica
  • Average high temperature in December: 27°C

The warmest months (with the highest average high temperature) are August, September and October (28.6°C).
The months with the lowest average high temperature are February and March (26.3°C).

  • Average low temperature in December: 25.3°C

The month with the highest average low temperature is September (27.1°C).
The coldest month (with the lowest average low temperature) is March (24.1°C).

Average pressure in December
Rosalie, Dominica

Average pressure in December - Rosalie, Dominica
  • Average pressure in December: 1014.2mbar

The month with the highest atmospheric pressure is June (1015.6mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).

Average wind speed in December
Rosalie, Dominica

Average wind speed in December - Rosalie, Dominica
  • Average wind speed in December: 25.3km/h

The windiest month (with the highest average wind speed) is January (27.2km/h).
The calmest month (with the lowest average wind speed) is October (20.2km/h).

Average humidity in December
Rosalie, Dominica

Average humidity in December - Rosalie, Dominica
  • Average humidity in December: 76%

The months with the highest relative humidity are July and August (78%).
The months with the lowest relative humidity are January, February and March (75%).

Average rainfall in December
Rosalie, Dominica

Average rainfall in December - Rosalie, Dominica
  • Average rainfall in December: 38mm

The wettest month (with the highest rainfall) is August (78mm).
The driest month (with the least rainfall) is February (20mm).

Average rainfall days in December
Rosalie, Dominica

Average rainfall days in December - Rosalie, Dominica
  • Average rainfall days in December: 18.3 days

The month with the highest number of rainy days is October (21.5 days).
The month with the least rainy days is June (14.8 days).

Average daylight in December /
Average sunshine in December
Rosalie, Dominica

Average daylight in December / Average sunshine in December - Rosalie, Dominica
  • Average daylight in December: 11h and 1min

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 12min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in December
Rosalie, Dominica

Average sunshine days in December - Rosalie, Dominica
  • Average sunshine days in December: 9.5 days

The month with the most sunshine days is March (9.8 days).
The month with the least sunshine days is April (5.9 days).

Average UV index in December
Rosalie, Dominica

Average UV index in December - Rosalie, Dominica
  • 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
Rosalie, Dominica

Average cloud cover in December - Rosalie, Dominica
  • Average cloud cover in December: 39

The months with the most cloud cover are June and July (Cloud cover 44).
The month with the least cloud cover is February (Cloud cover 33).

Average visibility in December
Rosalie, Dominica

Average visibility in December - Rosalie, Dominica
  • 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).

Rosalie, Dominica

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