December weather forecast
Rosalie, Dominica

Weather in December

The first month of the winter, December, is also a moderately hot month in Rosalie, Dominica, with an average temperature fluctuating between 27°C (80.6°F) and 25.3°C (77.5°F).

Temperature

In December, the average high-temperature is almost the same as in November - a still warm 27°C (80.6°F). In Rosalie, in December, the average low-temperature is 25.3°C (77.5°F).

Heat index

In December, the average heat index is estimated at 29°C (84.2°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, wind, clothing), and activity. 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 especially crucial for babies and toddlers. 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

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

Rainfall

In Rosalie, during 18.3 rainfall days, 38mm (1.5") of precipitation is typically accumulated. Throughout the year, there are 221.9 rainfall days, and 570mm (22.44") of precipitation is accumulated.

Daylight

With an average of 11h and 14min of daylight, December has the shortest days of the year in Rosalie.
On the first day of the month, sunrise is at 06:15 and sunset at 17:32. On the last day of December, in Rosalie, 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.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Rosalie. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 in December transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in December in Rosalie?

The average high-temperature, in December, is 27°C (80.6°F), while the average low-temperature is 25.3°C (77.5°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in December is estimated at 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 many days does it rain in December in Rosalie?

In December, in Rosalie, Dominica, the rain falls for 18.3 days. Throughout December, 38mm (1.5") of precipitation is accumulated.

What is the month with the shortest days in Rosalie?

The month with the shortest days in Rosalie is December, with an average of 11h and 14min of daylight.

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

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

When is the sunrise / sunset in December in Rosalie?

On the first day of December in Rosalie, 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?

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

How long on average sun shines 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.

What is the UV index intensity in December in Rosalie?

In December, the average daily maximum UV index in Rosalie, Dominica, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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).

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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).

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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).

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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%).

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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).

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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).

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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 14min

The month with the longest days is June (Average daylight: 13h and 2min).
The month with the shortest days is December (Average daylight: 11h and 14min).

  • Average sunshine in December: 6h and 36min

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).

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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).

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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).

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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).

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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).

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