Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
São João da Barra records an average high-temperature of a still warm 27.4°C (81.3°F) in December, closely mirroring the climate of the previous month. An average low-temperature of 23.3°C (73.9°F) characterizes São João da Barra's December nights.Heat index
For December, the heat index is evaluated at a tropical 31°C (87.8°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. 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 especially vital to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
December is the most humid month in São João da Barra, with an average relative humidity of 83%.Rainfall
In December, the rain falls for 17.9 days. Throughout December, 124mm (4.88") of precipitation is accumulated. Throughout the year, in São João da Barra, there are 169.1 rainfall days, and 753mm (29.65") of precipitation is accumulated.Daylight
December has the longest days of the year in São João da Barra, with an average of 13h and 24min of daylight.On the first day of December in São João da Barra, Brazil, sunrise is at 04:52 and sunset at 18:14. On the last day of the month, sunrise is at 05:04 and sunset at 18:30 -03.
Sunshine
In São João da Barra, the average sunshine in December is 8.9h.UV index
March through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: During December, 6 as the daily maximum UV index converts into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What are the temperatures in São João da Barra in December?
What is the most humid month in São João da Barra?
What is the average humidity in December in São João da Barra?
How much does it rain in São João da Barra in December?
When are the longest days in São João da Barra?
How many hours of daylight does São João da Barra have in December?
When are sunrise and sunset in December in São João da Barra?
How many hours of sunshine does São João da Barra have in December?
What is the month with the lowest UV index in São João da Barra?
How high is the UV index in December in São João da Barra?
Average temperature in December
São João da Barra, Brazil
- Average high temperature in December: 27.4°C
The warmest month (with the highest average high temperature) is February (28.9°C).
The month with the lowest average high temperature is August (23.9°C).
- Average low temperature in December: 23.3°C
The month with the highest average low temperature is February (24.1°C).
The coldest months (with the lowest average low temperature) are July and August (20°C).
Average pressure in December
São João da Barra, Brazil
- Average pressure in December: 1012.4mbar
The month with the highest atmospheric pressure is July (1020.8mbar).
The month with the lowest atmospheric pressure is December (1012.4mbar).
Average wind speed in December
São João da Barra, Brazil
- Average wind speed in December: 16.2km/h
The windiest month (with the highest average wind speed) is September (19.6km/h).
The calmest month (with the lowest average wind speed) is April (12.6km/h).
Average humidity in December
São João da Barra, Brazil
- Average humidity in December: 83%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
São João da Barra, Brazil
- Average rainfall in December: 124mm
The wettest month (with the highest rainfall) is November (128mm).
The driest month (with the least rainfall) is July (21mm).
Average rainfall days in December
São João da Barra, Brazil
- Average rainfall days in December: 17.9 days
The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is June (10.1 days).
Average daylight in December /
Average sunshine in December
São João da Barra, Brazil
- Average daylight in December: 13h and 2min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in December: 8h and 5min
The month with the most sunshine is February (Average sunshine: 9h and 6min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).
Average sunshine days in December
São João da Barra, Brazil
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is July (18.1 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in December
São João da Barra, Brazil
- Average UV index in December: 6
The months with the highest UV index are January and February (UV index 7).
The months with the lowest UV index are March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in December
São João da Barra, Brazil
- Average cloud cover in December: 40
The month with the most cloud cover is November (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 27).
Average visibility in December
São João da Barra, Brazil
- 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).
São João da Barra, Brazil
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