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
December's weather, recording an average high temperature of a still warm 28.5°C (83.3°F), matches that of November. Rio Claro experiences an average low-temperature of 19.5°C (67.1°F) in month of December.Heat index
During December, the heat index is appraised at a hot 34°C (93.2°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.The standards for the heat index are set for locations in shade and under light breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
In December, the average relative humidity in Rio Claro is 81%.Rainfall
In Rio Claro, during December, the rain falls for 23.5 days and regularly aggregates up to 118mm (4.65") of precipitation. Throughout the year, in Rio Claro, Brazil, there are 185.9 rainfall days, and 870mm (34.25") of precipitation is accumulated.Daylight
December has the longest days of the year in Rio Claro, with an average of 13h and 30min of daylight.On the first day of the month, sunrise is at 05:17 and sunset at 18:41. On the last day of December, sunrise is at 05:29 and sunset at 18:58 -03.
Sunshine
In Rio Claro, the average sunshine in December is 7.6h.UV index
April through July and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 5 in December leads to these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
How hot is December in Rio Claro?
What is the average humidity in December in Rio Claro?
How much does it rain in Rio Claro in December?
When are the longest days in Rio Claro?
How many hours of daylight does Rio Claro have in December?
When is the sunrise / sunset in December in Rio Claro?
How many hours of sunshine does Rio Claro have in December?
When is the lowest UV index in Rio Claro?
What is the UV index reading in December in Rio Claro?
Average temperature in December
Rio Claro, Brazil
- Average high temperature in December: 28.5°C
The warmest month (with the highest average high temperature) is October (29.4°C).
The month with the lowest average high temperature is June (22.8°C).
- Average low temperature in December: 19.5°C
The month with the highest average low temperature is December (19.5°C).
The coldest month (with the lowest average low temperature) is June (13.4°C).
Average pressure in December
Rio Claro, Brazil
- Average pressure in December: 1011.7mbar
The month with the highest atmospheric pressure is July (1020mbar).
The month with the lowest atmospheric pressure is December (1011.7mbar).
Average wind speed in December
Rio Claro, Brazil
- Average wind speed in December: 7.7km/h
The windiest month (with the highest average wind speed) is October (8.9km/h).
The calmest months (with the lowest average wind speed) are March and April (6.5km/h).
Average humidity in December
Rio Claro, Brazil
- Average humidity in December: 81%
The month with the highest relative humidity is March (86%).
The month with the lowest relative humidity is September (63%).
Average rainfall in December
Rio Claro, Brazil
- Average rainfall in December: 118mm
The wettest month (with the highest rainfall) is January (154mm).
The driest month (with the least rainfall) is August (21mm).
Average rainfall days in December
Rio Claro, Brazil
- Average rainfall days in December: 23.5 days
The month with the highest number of rainy days is January (25.9 days).
The month with the least rainy days is August (5.9 days).
Average daylight in December /
Average sunshine in December
Rio Claro, Brazil
- Average daylight in December: 13h and 3min
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: 7h and 4min
The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 6min).
Average sunshine days in December
Rio Claro, Brazil
- Average sunshine days in December: 6.4 days
The month with the most sunshine days is August (24.6 days).
The month with the least sunshine days is January (4.3 days).
Average UV index in December
Rio Claro, Brazil
- Average UV index in December: 5
The months with the highest UV index are January, February, March, August, September, October and November (UV index 6).
The months with the lowest UV index are April, May, June, July and December (UV index 5).
Average cloud cover in December
Rio Claro, Brazil
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Rio Claro, Brazil
- Average visibility in December: 8km
The months with the highest visibility are July, August, September, October and November (9km).
The months with the lowest visibility are January, March, April and May (7km).
Rio Claro, Brazil
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