December weather forecastAraçatuba, Brazil

December

Weather in December

December, the first month of the summer in Araçatuba, is also a hot month, with an average temperature varying between 21.5°C (70.7°F) and 30.3°C (86.5°F).

Temperature

The transition into December shows a subtle variation to a still hot 30.3°C (86.5°F) from November's 30.6°C (87.1°F) in the average high-temperature. During December, Araçatuba witnesses a consistent average low-temperature of 21.5°C (70.7°F).

Heat index

For December, the heat index is evaluated at a sweltering 38°C (100.4°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in December is 79%.

Rainfall

In Araçatuba, Brazil, in December, during 26.1 rainfall days, 174mm (6.85") of precipitation is typically accumulated. In Araçatuba, during the entire year, the rain falls for 196.7 days and collects up to 1131mm (44.53") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 24min of daylight.
On the first day of December in Araçatuba, sunrise is at 05:31 and sunset at 18:51. On the last day of the month, sunrise is at 05:43 and sunset at 19:07 -03.

Sunshine

In December, the average sunshine is 7.7h.

UV index

The months with the highest UV index in Araçatuba are January through December, with an average maximum UV index of 6. The months with the lowest UV index in Araçatuba are January through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 during December leads to these advisories:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

Frequently asked questions

In Araçatuba, 30.3°C (86.5°F) is the average high-temperature and 21.5°C (70.7°F) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in December is evaluated at 38°C (100.4°F).

The average relative humidity in December in Araçatuba, Brazil, is 79%.

In Araçatuba, Brazil, in December, during 26.1 rainfall days, 174mm (6.85") of precipitation is typically accumulated.

The month with the longest days in Araçatuba, Brazil, is December, with an average of 13h and 24min of daylight.

The average day length in December in Araçatuba is 13h and 24min.

In December, on the first day of the month, sunrise is at 05:31 and sunset at 18:51. On the last day of the month, in Araçatuba, Brazil, sunrise is at 05:43 and sunset at 19:07 -03.

In Araçatuba, Brazil, the average sunshine duration in December is 7.7h.

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

The months with the lowest UV index in Araçatuba are January through December, with an average maximum UV index of 6.

In Araçatuba, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Araçatuba, Brazil

  • Average high temperature in December: 30.3°C

The warmest month (with the highest average high temperature) is September (31.9°C).
The month with the lowest average high temperature is June (25.1°C).

  • Average low temperature in December: 21.5°C

The month with the highest average low temperature is December (21.5°C).
The coldest month (with the lowest average low temperature) is June (15.7°C).

Average pressure in December
Araçatuba, Brazil

  • Average pressure in December: 1009.6mbar

The month with the highest atmospheric pressure is July (1017.7mbar).
The month with the lowest atmospheric pressure is December (1009.6mbar).

Average wind speed in December
Araçatuba, Brazil

  • Average wind speed in December: 8.1km/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 February (7.2km/h).

Average humidity in December
Araçatuba, Brazil

  • Average humidity in December: 79%

The month with the highest relative humidity is March (85%).
The month with the lowest relative humidity is August (53%).

Average rainfall in December
Araçatuba, Brazil

  • Average rainfall in December: 174mm

The wettest month (with the highest rainfall) is January (193mm).
The driest month (with the least rainfall) is August (9mm).

Average rainfall days in December
Araçatuba, Brazil

  • Average rainfall days in December: 26.1 days

The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is August (3.8 days).

Average daylight in December /
Average sunshine in December
Araçatuba, Brazil

  • Average daylight in December: 13h and 24min

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 54min).

  • Average sunshine in December: 7h and 42min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 7h and 12min).

Average sunshine days in December
Araçatuba, Brazil

  • Average sunshine days in December: 4 days

The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is January (2.2 days).

Average UV index in December
Araçatuba, Brazil

  • Average UV index in December: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).

Average cloud cover in December
Araçatuba, Brazil

  • Average cloud cover in December: 45

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in December
Araçatuba, Brazil

  • Average visibility in December: 9km

The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, March, April and May (8km).