December weather forecast
San Juan Bautista, Paraguay

Weather in December

December, the first month of the summer in San Juan Bautista, is also a hot month, with an average temperature varying between 21.1°C (70°F) and 32.1°C (89.8°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a still tropical 32.1°C (89.8°F). The average low-temperature, in December, is 21.1°C (70°F).

Heat index

The average heat index in December is evaluated at a blistering 41°C (105.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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. Additional factors like wind, differences in body mass, height, and shape, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In December, the average relative humidity in San Juan Bautista is 71%.

Rainfall

In San Juan Bautista, during 12.5 rainfall days, 77mm (3.03") of precipitation is typically accumulated. Throughout the year, in San Juan Bautista, there are 130.6 rainfall days, and 683mm (26.89") of precipitation is accumulated.

Daylight

With an average of 13h and 47min of daylight, December has the longest days of the year.
On the first day of December in San Juan Bautista, sunrise is at 05:46 and sunset at 19:28. On the last day of the month, sunrise is at 05:57 and sunset at 19:45 -03.

Sunshine

The average sunshine in December in San Juan Bautista is 10.7h.

UV index

January, February 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 threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in December transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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 San Juan Bautista?

The average high-temperature, in December, is 32.1°C (89.8°F), while the average low-temperature is 21.1°C (70°F). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in December is evaluated at 41°C (105.8°F).

What is the average humidity in December in San Juan Bautista?

In December, the average relative humidity in San Juan Bautista, Paraguay, is 71%.

How many days does it rain in December in San Juan Bautista?

In San Juan Bautista, Paraguay, in December, during 12.5 rainfall days, 77mm (3.03") of precipitation is typically accumulated.

When are the longest days in San Juan Bautista?

With an average of 13h and 47min of daylight, December has the longest days of the year in San Juan Bautista, Paraguay.

What is the average length of the day in December in San Juan Bautista?

In December, the average day length in San Juan Bautista is 13h and 47min.

When are sunrise and sunset in December in San Juan Bautista?

On the first day of December, sunrise is at 05:46 and sunset at 19:28. On the last day of the month, sunrise is at 05:57 and sunset at 19:45 -03.

How many hours of sunshine does San Juan Bautista have in December?

The average sunshine duration in December in San Juan Bautista, Paraguay, is 10.7h.

What is the month with the highest UV index in San Juan Bautista?

The months with the highest UV index in San Juan Bautista, Paraguay, are January, February and December, with an average maximum UV index of 7.

How high is the UV index in December in San Juan Bautista?

In December, the average daily maximum UV index in San Juan Bautista, Paraguay, is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.

Average temperature in December
San Juan Bautista, Paraguay

Average temperature in December - San Juan Bautista, Paraguay
  • Average high temperature in December: 32.1°C

The warmest month (with the highest average high temperature) is January (33.4°C).
The month with the lowest average high temperature is July (19.8°C).

  • Average low temperature in December: 21.1°C

The month with the highest average low temperature is January (22.1°C).
The coldest month (with the lowest average low temperature) is July (11.1°C).

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Average pressure in December
San Juan Bautista, Paraguay

Average pressure in December - San Juan Bautista, Paraguay
  • Average pressure in December: 1008.3mbar

The month with the highest atmospheric pressure is July (1017.9mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).

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Average wind speed in December
San Juan Bautista, Paraguay

Average wind speed in December - San Juan Bautista, Paraguay
  • Average wind speed in December: 8.8km/h

The windiest month (with the highest average wind speed) is August (10.8km/h).
The calmest month (with the lowest average wind speed) is March (7.9km/h).

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Average humidity in December
San Juan Bautista, Paraguay

Average humidity in December - San Juan Bautista, Paraguay
  • Average humidity in December: 71%

The months with the highest relative humidity are May and June (86%).
The month with the lowest relative humidity is January (69%).

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Average rainfall in December
San Juan Bautista, Paraguay

Average rainfall in December - San Juan Bautista, Paraguay
  • Average rainfall in December: 77mm

The wettest month (with the highest rainfall) is October (88mm).
The driest month (with the least rainfall) is August (21mm).

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Average rainfall days in December
San Juan Bautista, Paraguay

Average rainfall days in December - San Juan Bautista, Paraguay
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is January (14.5 days).
The month with the least rainy days is August (6.7 days).

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Average daylight in December /
Average sunshine in December
San Juan Bautista, Paraguay

Average daylight in December / Average sunshine in December - San Juan Bautista, Paraguay
  • Average daylight in December: 13h and 47min

The month with the longest days is December (Average daylight: 13h and 47min).
The month with the shortest days is June (Average daylight: 10h and 29min).

  • Average sunshine in December: 10h and 42min

The month with the most sunshine is November (Average sunshine: 10h and 48min).
The month with the least sunshine is May (Average sunshine: 6h and 42min).

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Average sunshine days in December
San Juan Bautista, Paraguay

Average sunshine days in December - San Juan Bautista, Paraguay
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is August (23.6 days).
The month with the least sunshine days is February (13.7 days).

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Average UV index in December
San Juan Bautista, Paraguay

Average UV index in December - San Juan Bautista, Paraguay
  • Average UV index in December: 7

The months with the highest UV index are January, February and December (UV index 7).
The month with the lowest UV index is May (UV index 4).

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Average cloud cover in December
San Juan Bautista, Paraguay

Average cloud cover in December - San Juan Bautista, Paraguay
  • Average cloud cover in December: 29

The month with the most cloud cover is May (Cloud cover 51).
The month with the least cloud cover is November (Cloud cover 26).

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Average visibility in December
San Juan Bautista, Paraguay

Average visibility in December - San Juan Bautista, Paraguay
  • Average visibility in December: 9km

The months with the highest visibility are January, February, March, August, September, October, November and December (9km).
The months with the lowest visibility are May and June (7km).

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