December weather forecast
Piriápolis, Uruguay

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Weather in December

December in Piriápolis ushers in summer, characterized by the highest annual temperatures. The sea accentuates its warmth, converting the beach into a popular spot. As the wind slackens slightly, it ensures a mild, soothing coastal atmosphere. The increase in daylight and sunshine hours further brightens the city, signifying the zenith of the season. Interestingly, the air pressure dips to an average of 1011.5 millibars, marking the lowest pressure level for the year.

Temperature

Transitioning into December, Piriápolis records an average high-temperature of a moderately hot 23.4°C (74.1°F), almost identical to November's 20.5°C (68.9°F). An average low-temperature of 18.1°C (64.6°F) is expected in Piriápolis, Uruguay, during December.

Humidity

In Piriápolis, the average relative humidity in December is 72%.

Rainfall

In Piriápolis, in December, during 11.1 rainfall days, 70mm (2.76") of precipitation is typically accumulated. In Piriápolis, during the entire year, the rain falls for 136.9 days and collects up to 714mm (28.11") of precipitation.

Sea temperature

In Piriápolis, the average seawater temperature in December is 20.8°C (69.4°F).
Note: Swimming is not a pleasurable activity for the majority in water at 20.8°C (69.4°F). Breathing control gets harder as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

The month with the longest days in Piriápolis is December, with an average of 14h and 30min of daylight.
On the first day of December in Piriápolis, sunrise is at 05:20 and sunset at 19:40. On the last day of the month, sunrise is at 05:30 and sunset at 19:58 -03.

Sunshine

The average sunshine in December in Piriápolis is 10.6h.

UV index

January through March and December, with an average maximum UV index of 6, are months with the highest UV index in Piriápolis. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 6 during December translates into these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What is the usual temperature for Piriápolis in December?

The high-temperature in Piriápolis, Uruguay, during December is 23.4°C (74.1°F) and the low-temperature is 18.1°C (64.6°F).

What is the average humidity in December in Piriápolis?

The average relative humidity in December in Piriápolis is 72%.

How much does it rain in Piriápolis in December?

In December, in Piriápolis, the rain falls for 11.1 days. Throughout December, 70mm (2.76") of precipitation is accumulated.

What is the sea water temperature in December in Piriápolis?

In Piriápolis, Uruguay, the average seawater temperature in December is 20.8°C (69.4°F). Swimming in 20.8°C (69.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

When are the longest days in Piriápolis?

The month with the longest days is December, with an average of 14h and 30min of daylight.

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

In December, the average day length in Piriápolis, Uruguay, is 14h and 27min.

When are sunrise and sunset in December in Piriápolis?

In December, on the first day of the month, sunrise is at 05:20 and sunset at 19:40. On the last day of the month, in Piriápolis, Uruguay, sunrise is at 05:30 and sunset at 19:58 -03.

How many hours of sunshine does Piriápolis have in December?

In December, the average sunshine duration in Piriápolis, Uruguay, is 10.6h.

When is the highest UV index in Piriápolis?

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

How high is the UV index in December in Piriápolis?

In December, the average daily maximum UV index in Piriápolis, Uruguay, is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

Average temperature in December
Piriápolis, Uruguay

Average temperature in December - Piriápolis, Uruguay
  • Average high temperature in December: 23.4°C

The warmest month (with the highest average high temperature) is January (25.3°C).
The month with the lowest average high temperature is July (13.2°C).

  • Average low temperature in December: 18.1°C

The month with the highest average low temperature is February (20.3°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).

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Average pressure in December
Piriápolis, Uruguay

Average pressure in December - Piriápolis, Uruguay
  • Average pressure in December: 1011.5mbar

The month with the highest atmospheric pressure is July (1018.9mbar).
The month with the lowest atmospheric pressure is December (1011.5mbar).

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Average wind speed in December
Piriápolis, Uruguay

Average wind speed in December - Piriápolis, Uruguay
  • Average wind speed in December: 19.7km/h

The windiest months (with the highest average wind speed) are June and September (21.3km/h).
The calmest month (with the lowest average wind speed) is May (19.1km/h).

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Average humidity in December
Piriápolis, Uruguay

Average humidity in December - Piriápolis, Uruguay
  • Average humidity in December: 72%

The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is January (71%).

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Average rainfall in December
Piriápolis, Uruguay

Average rainfall in December - Piriápolis, Uruguay
  • Average rainfall in December: 70mm

The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is January (44mm).

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Average rainfall days in December
Piriápolis, Uruguay

Average rainfall days in December - Piriápolis, Uruguay
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is March (14.3 days).
The months with the least rainy days are June, August and September (10.2 days).

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Average sea temperature in December
Piriápolis, Uruguay

Average sea temperature in December - Piriápolis, Uruguay
  • Average sea temperature in December: 20.8°C

The best months for swimming (with the highest average sea temperature) are January and February (22.8°C).
The coldest month (with the lowest average sea temperature) is July (11.8°C).

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

Average daylight in December / Average sunshine in December - Piriápolis, Uruguay
  • Average daylight in December: 14h and 3min

The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 54min).

  • Average sunshine in December: 10h and 4min

The month with the most sunshine is January (Average sunshine: 10h and 54min).
The month with the least sunshine is July (Average sunshine: 5h and 24min).

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Average sunshine days in December
Piriápolis, Uruguay

Average sunshine days in December - Piriápolis, Uruguay
  • Average sunshine days in December: 17.4 days

The month with the most sunshine days is August (19.3 days).
The month with the least sunshine days is March (13.6 days).

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Average UV index in December
Piriápolis, Uruguay

Average UV index in December - Piriápolis, 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 July (UV index 3).

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Average cloud cover in December
Piriápolis, Uruguay

Average cloud cover in December - Piriápolis, Uruguay
  • Average cloud cover in December: 24

The month with the most cloud cover is July (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 22).

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Average visibility in December
Piriápolis, Uruguay

Average visibility in December - Piriápolis, Uruguay
  • 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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Piriápolis, Uruguay

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