December weather forecastBelen, Uruguay

December

Weather in December

December, the first month of the summer in Belen, is also a moderately hot month, with temperature in the range of an average low of 18.4°C (65.1°F) and an average high of 29.9°C (85.8°F).

Temperature

As December arrives, a slight rise in the average high-temperature is observed, moving from a warm 26.7°C (80.1°F) in November to a still moderately hot 29.9°C (85.8°F). Belen usually reports an average low-temperature of 18.4°C (65.1°F) during the month of December.

Heat index

Throughout December, the heat index is evaluated at a hot 33°C (91.4°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

The average relative humidity in December is 64%.

Rainfall

In Belen, during December, the rain falls for 11.5 days and regularly aggregates up to 81mm (3.19") of precipitation. Throughout the year, there are 117.3 rainfall days, and 856mm (33.7") of precipitation is accumulated.

Snowfall

In Belen, snow does not fall in January through August, October through December.

Daylight

With an average of 14h and 6min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:40 and sunset at 19:40. On the last day of December, sunrise is at 05:51 and sunset at 19:57 -03.

Sunshine

With an average of 10.9h of sunshine, December has the most sunshine of the year.

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 7 during December leads to these advisories:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December temperatures vary between a high-temperature of 29.9°C (85.8°F) and a low-temperature of 18.4°C (65.1°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in December is evaluated at 33°C (91.4°F).

In Belen, the average relative humidity in December is 64%.

In Belen, during December, the rain falls for 11.5 days and regularly aggregates up to 81mm (3.19") of precipitation.

January through August, October through December are months without snowfall.

The month with the longest days is December, with an average of 14h and 6min of daylight.

In Belen, the average day length in December is 14h and 6min.

On the first day of December in Belen, sunrise is at 05:40 and sunset at 19:40. On the last day of the month, sunrise is at 05:51 and sunset at 19:57 -03.

December has the most sunshine of the year, with an average of 10.9h of sunshine.

In December, the average sunshine duration is 10.9h.

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

In December, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health risk 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

26.7°C

29.9°C

31.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.8km/h

11.9km/h

11.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

19.7

18.1

18.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Belen, Uruguay

Average high temperature in December: 29.9°C

The warmest month (with the highest average high temperature) is January (31.9°C).
The month with the lowest average high temperature is July (15.9°C).

Average low temperature in December: 18.4°C

The months with the highest average low temperature are January and February (20.3°C).
The coldest month (with the lowest average low temperature) is July (8.1°C).

Average pressure in December
Belen, Uruguay

Average pressure in December: 1010.3mbar

The month with the highest atmospheric pressure is July (1019.2mbar).
The month with the lowest atmospheric pressure is December (1010.3mbar).

Average wind speed in December
Belen, Uruguay

Average wind speed in December: 10.9km/h

The windiest months (with the highest average wind speed) are August and October (12.8km/h).
The calmest month (with the lowest average wind speed) is April (10.3km/h).

Average humidity in December
Belen, Uruguay

Average humidity in December: 64%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is January (60%).

Average rainfall in December
Belen, Uruguay

Average rainfall in December: 81mm

The wettest month (with the highest rainfall) is January (109mm).
The driest month (with the least rainfall) is April (42mm).

Average rainfall days in December
Belen, Uruguay

Average rainfall days in December: 11.5 days

The months with the highest number of rainy days are October and December (11.5 days).
The month with the least rainy days is August (8.2 days).

Average snowfall in December
Belen, Uruguay

Average snowfall in December: 0mm

The month with the highest snowfall is September (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0mm).

Average snowfall days in December
Belen, Uruguay

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Belen, Uruguay

Average daylight in December: 14h and 6min

The month with the longest days is December (Average daylight: 14h and 6min).
The month with the shortest days is June (Average daylight: 10h and 12min).

Average sunshine in December: 10h and 54min

The month with the most sunshine is December (Average sunshine: 10h and 54min).
The month with the least sunshine is June (Average sunshine: 5h and 36min).