December weather forecastSaint Roman, Monaco

December

Weather in December

In December, Saint Roman embraces winter wholly, with an average high temperature dropping to 10.3°C (50.5°F). Despite the presence of winter chill, rainfall begins to reduce from the highs of November. Sunlight hours decrease, signifying shorter days and longer nights. While it might not be the coldest month, the evident plunge in temperatures marks the full embrace of winter. Thus, December is traditionally cooler and less rainy compared to November.

Temperature

December's climate in Saint Roman shows a minor adjustment in average high-temperatures to a cool 10.3°C (50.5°F) from November's 13.1°C (55.6°F). Saint Roman, in December, logs an average low-temperature of 6.5°C (43.7°F), a subtle step down from daytime readings.

Humidity

The months with the lowest humidity are January and December, with an average relative humidity of 69%.

Rainfall

In Saint Roman, Monaco, in December, it is raining for 9.1 days, with typically 60mm (2.36") of accumulated precipitation. In Saint Roman, during the entire year, the rain falls for 163.9 days and collects up to 765mm (30.12") of precipitation.

Snowfall

April through December are months without snowfall in Saint Roman.

Daylight

With an average of 9h and 0min of daylight, December has the shortest days of the year.
On the first day of December in Saint Roman, sunrise is at 07:44 and sunset at 16:54. On the last day of the month, sunrise is at 08:03 and sunset at 17:02 CET.

Sunshine

January, November and December, with an average of 6.4h of sunshine, are months with the least sunshine in Saint Roman.

UV index

The months with the lowest UV index in Saint Roman are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 3 suggests this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.

Updated: Feb 7, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Saint Roman, is 10.3°C (50.5°F), while the low-temperature averages to 6.5°C (43.7°F).

The months with the lowest humidity in Saint Roman, Monaco, are January and December, with an average relative humidity of 69%.

In Saint Roman, the average relative humidity in December is 69%.

In Saint Roman, in December, during 9.1 rainfall days, 60mm (2.36") of precipitation is typically accumulated.

April through December are months without snowfall in Saint Roman, Monaco.

In Saint Roman, Monaco, in December, it doesn't snow. In January, it regularly snows.

The month with the shortest days is December, with an average of 9h and 0min of daylight.

In Saint Roman, Monaco, the average day length in December is 8h and 59min.

In December, on the first day of the month, sunrise is at 07:44 and sunset at 16:54. On the last day of the month, in Saint Roman, Monaco, sunrise is at 08:03 and sunset at 17:02 CET.

The months with the least sunshine in Saint Roman, Monaco, are January, November and December, with an average of 6.4h of sunshine.

In Saint Roman, Monaco, the average sunshine duration in December is 6.4h.

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Saint Roman.

The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

13.1°C

10.3°C

8.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

14.3km/h

13km/h

13.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.2

19.4

18.1

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Saint Roman, Monaco

Average high temperature in December: 10.3°C

The warmest month (with the highest average high temperature) is August (23.9°C).
The months with the lowest average high temperature are January and February (8.8°C).

Average low temperature in December: 6.5°C

The month with the highest average low temperature is August (19.2°C).
The coldest month (with the lowest average low temperature) is February (4.7°C).

Average pressure in December
Saint Roman, Monaco

Average pressure in December: 1018.4mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is April (1013.9mbar).

Average wind speed in December
Saint Roman, Monaco

Average wind speed in December: 11.8km/h

The windiest month (with the highest average wind speed) is March (13.1km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).

Average humidity in December
Saint Roman, Monaco

Average humidity in December: 69%

The months with the highest relative humidity are May and June (75%).
The months with the lowest relative humidity are January and December (69%).

Average rainfall in December
Saint Roman, Monaco

Average rainfall in December: 60mm

The wettest month (with the highest rainfall) is November (127mm).
The driest month (with the least rainfall) is January (34mm).

Average rainfall days in December
Saint Roman, Monaco

Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is December (9.1 days).

Average snowfall in December
Saint Roman, Monaco

Average snowfall in December: 0mm

The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Saint Roman, Monaco

Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, October and November (0 days).

Average daylight in December /
Average sunshine in December
Saint Roman, Monaco

Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

Average sunshine in December: 6h and 24min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January, November and December (Average sunshine: 6h and 24min).

Average sunshine days in December
Saint Roman, Monaco

Average sunshine days in December: 19.4 days

The month with the most sunshine days is December (19.4 days).
The month with the least sunshine days is May (7.3 days).

Average UV index in December
Saint Roman, Monaco

Average UV index in December: 3

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December
Saint Roman, Monaco

Average cloud cover in December: 26

The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in December
Saint Roman, Monaco

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).