December weather forecastSanto Anastácio, Brazil
December
Weather in December
The first month of the summer, December, is also a hot month in Santo Anastácio, Brazil, with an average temperature fluctuating between 30.6°C (87.1°F) and 21.7°C (71.1°F).Temperature
The shift from November to December is characterized by an average high-temperature of a still hot 30.6°C (87.1°F), not significantly different from the 31.2°C (88.2°F) of November. The temperature in Santo Anastácio dips to an average of 21.7°C (71.1°F) during December nights.Heat index
The heat index for December is calculated to be a very hot 39°C (102.2°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. 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 essentially critical for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
The average relative humidity in December is 78%.Rainfall
In Santo Anastácio, in December, it is raining for 23.9 days, with typically 151mm (5.94") of accumulated precipitation. Throughout the year, in Santo Anastácio, there are 190.4 rainfall days, and 1184mm (46.61") of precipitation is accumulated.Daylight
December has the longest days of the year, with an average of 13h and 30min of daylight.On the first day of the month, sunrise is at 05:34 and sunset at 18:57. On the last day of December, sunrise is at 05:46 and sunset at 19:13 -03.
Sunshine
In Santo Anastácio, the average sunshine in December is 8h.UV index
In Santo Anastácio, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 6 in December transforms into the following instructions:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Santo Anastácio, Brazil
- Average high temperature in December: 30.6°C
The warmest month (with the highest average high temperature) is October (31.8°C).
The month with the lowest average high temperature is June (24.7°C).
- Average low temperature in December: 21.7°C
The month with the highest average low temperature is January (21.8°C).
The coldest months (with the lowest average low temperature) are June and July (15.6°C).
Average pressure in December
Santo Anastácio, Brazil
- Average pressure in December: 1009.4mbar
The month with the highest atmospheric pressure is July (1017.9mbar).
The month with the lowest atmospheric pressure is December (1009.4mbar).
Average wind speed in December
Santo Anastácio, Brazil
- Average wind speed in December: 8.1km/h
The windiest month (with the highest average wind speed) is August (10.7km/h).
The calmest months (with the lowest average wind speed) are February and March (7.3km/h).
Average humidity in December
Santo Anastácio, Brazil
- Average humidity in December: 78%
The month with the highest relative humidity is March (84%).
The months with the lowest relative humidity are August and September (58%).
Average rainfall in December
Santo Anastácio, Brazil
- Average rainfall in December: 151mm
The wettest month (with the highest rainfall) is January (211mm).
The driest month (with the least rainfall) is July (29mm).
Average rainfall days in December
Santo Anastácio, Brazil
- Average rainfall days in December: 23.9 days
The month with the highest number of rainy days is January (26.7 days).
The month with the least rainy days is August (5.8 days).
Average daylight in December /
Average sunshine in December
Santo Anastácio, Brazil
- Average daylight in December: 13h and 30min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in December: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).
Average sunshine days in December
Santo Anastácio, Brazil
- Average sunshine days in December: 6.3 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is February (3.4 days).
Average UV index in December
Santo Anastácio, Brazil
- Average UV index in December: 6
The month with the highest UV index is August (UV index 7).
The month with the lowest UV index is May (UV index 5).
Average cloud cover in December
Santo Anastácio, Brazil
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Santo Anastácio, Brazil
- Average visibility in December: 9km
The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January, February, March, April and May (8km).
