December weather forecastPirarajá, Uruguay

December

Weather in December

The first month of the summer, December, is also a moderately hot month in Pirarajá, Uruguay, with an average temperature fluctuating between 15.3°C (59.5°F) and 28.2°C (82.8°F).

Temperature

In Pirarajá, the average high-temperature in December slightly increases from a moderately hot 25.2°C (77.4°F) in November to a still warm 28.2°C (82.8°F). Pirarajá in December observes a sharp transition from the daytime heat, falling to an average low of 15.3°C (59.5°F).

Heat index

In December, the heat index is estimated at a tropical 31°C (87.8°F). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
Note that heat index values are valued for light wind and location in the shade. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

In December, the average relative humidity is 70%.

Rainfall

In December, the rain falls for 11.3 days. Throughout December, 63mm (2.48") of precipitation is accumulated. In Pirarajá, during the entire year, the rain falls for 139.1 days and collects up to 799mm (31.46") of precipitation.

Daylight

The month with the longest days is December, with an average of 14h and 24min of daylight.
On the first day of December, sunrise is at 05:21 and sunset at 19:35. On the last day of the month, sunrise is at 05:31 and sunset at 19:52 -03.

Sunshine

December has the most sunshine of the year, with an average of 10.3h of sunshine.

UV index

The months with the highest UV index are January through March and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 6 translates into these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. 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. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Updated: Jun 23, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature during December is 28.2°C (82.8°F) and the low-temperature is 15.3°C (59.5°F). In December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is estimated at 31°C (87.8°F).

In December, the average relative humidity is 70%.

In Pirarajá, in December, during 11.3 rainfall days, 63mm (2.48") of precipitation is typically accumulated.

December has the longest days of the year, with an average of 14h and 24min of daylight.

In December, the average day length in Pirarajá is 14h and 21min.

On the first day of December, sunrise is at 05:21 and sunset at 19:35. On the last day of the month, sunrise is at 05:31 and sunset at 19:52 -03.

December has the most sunshine of the year in Pirarajá, with an average of 10.3h of sunshine.

In December, the average sunshine duration in Pirarajá is 10.3h.

January through March and December, with an average maximum UV index of 6, are months with the highest UV index.

In December, the average daily maximum UV index in Pirarajá is 6. A UV Index of 6 to 7 symbolizes 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

25.2°C

28.2°C

29.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.8km/h

15.7km/h

15.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

17.5

15.9

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Pirarajá, Uruguay

Average high temperature in December: 28.2°C

The warmest month (with the highest average high temperature) is January (29.8°C).
The month with the lowest average high temperature is July (15.3°C).

Average low temperature in December: 15.3°C

The month with the highest average low temperature is February (17.5°C).
The coldest month (with the lowest average low temperature) is July (7.2°C).

Average pressure in December
Pirarajá, Uruguay

Average pressure in December: 1011.4mbar

The month with the highest atmospheric pressure is July (1019.3mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).

Average wind speed in December
Pirarajá, Uruguay

Average wind speed in December: 14.4km/h

The windiest months (with the highest average wind speed) are September and October (15.4km/h).
The calmest month (with the lowest average wind speed) is May (12.6km/h).

Average humidity in December
Pirarajá, Uruguay

Average humidity in December: 70%

The months with the highest relative humidity are May and July (82%).
The month with the lowest relative humidity is January (68%).

Average rainfall in December
Pirarajá, Uruguay

Average rainfall in December: 63mm

The wettest month (with the highest rainfall) is October (99mm).
The driest months (with the least rainfall) are March and April (44mm).

Average rainfall days in December
Pirarajá, Uruguay

Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is January (13.2 days).
The month with the least rainy days is June (9.6 days).

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

Average daylight in December: 14h and 24min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

Average sunshine in December: 10h and 18min

The month with the most sunshine is December (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 5h and 36min).

Average sunshine days in December
Pirarajá, Uruguay

Average sunshine days in December: 17.5 days

The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is February (13.6 days).

Average UV index in December
Pirarajá, Uruguay

Average UV index in December: 6

The months with the highest UV index are January, February, March and December (UV index 6).
The month with the lowest UV index is May (UV index 3).

Average cloud cover in December
Pirarajá, Uruguay

Average cloud cover in December: 28

The month with the most cloud cover is September (Cloud cover 42).
The month with the least cloud cover is December (Cloud cover 28).

Average visibility in December
Pirarajá, Uruguay

Average visibility in December: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).