December weather forecastJari, Brazil
December
Weather in December
December, the first month of the summer in Jari, is also a moderately hot month, with an average temperature ranging between min 18.2°C (64.8°F) and max 29.5°C (85.1°F).Temperature
With the start of December, Jari measures an average high-temperature of a still moderately hot 29.5°C (85.1°F), not significantly differing from November's 27°C (80.6°F). An average low-temperature of 18.2°C (64.8°F) marks the nights throughout December.Heat index
In December, the average heat index is estimated at a hot 34°C (93.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Heat index data is primarily for areas with shade and subjected to light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are highly critical for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
December is the least humid month, with an average relative humidity of 71%.Rainfall
In Jari, in December, during 16.8 rainfall days, 121mm (4.76") of precipitation is typically accumulated. Throughout the year, there are 160.8 rainfall days, and 1177mm (46.34") of precipitation is accumulated.Daylight
December has the longest days of the year in Jari, with an average of 14h and 0min of daylight.On the first day of December in Jari, Brazil, sunrise is at 05:29 and sunset at 19:22. On the last day of the month, sunrise is at 05:40 and sunset at 19:39 -03.
Sunshine
December has the most sunshine of the year in Jari, with an average of 8.8h of sunshine.UV index
The months with the highest UV index in Jari, Brazil, are January through March, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 6 during December leads to these advisories:
Prevent overexposure. Protection from the sun's harmful effects is needed. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jari, Brazil
- Average high temperature in December: 29.5°C
The warmest month (with the highest average high temperature) is January (30.3°C).
The month with the lowest average high temperature is July (17.5°C).
- Average low temperature in December: 18.2°C
The months with the highest average low temperature are January and February (19.3°C).
The coldest month (with the lowest average low temperature) is July (9.3°C).
Average pressure in December
Jari, Brazil
- Average pressure in December: 1009.6mbar
The month with the highest atmospheric pressure is July (1018.7mbar).
The month with the lowest atmospheric pressure is December (1009.6mbar).
Average wind speed in December
Jari, Brazil
- Average wind speed in December: 12.2km/h
The windiest month (with the highest average wind speed) is August (13.9km/h).
The calmest month (with the lowest average wind speed) is April (10.8km/h).
Average humidity in December
Jari, Brazil
- Average humidity in December: 71%
The month with the highest relative humidity is June (85%).
The month with the lowest relative humidity is December (71%).
Average rainfall in December
Jari, Brazil
- Average rainfall in December: 121mm
The wettest month (with the highest rainfall) is October (132mm).
The driest month (with the least rainfall) is August (55mm).
Average rainfall days in December
Jari, Brazil
- Average rainfall days in December: 16.8 days
The month with the highest number of rainy days is January (17.5 days).
The month with the least rainy days is August (10.9 days).
Average daylight in December /
Average sunshine in December
Jari, Brazil
- Average daylight in December: 14h and 0min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in December: 8h and 48min
The month with the most sunshine is December (Average sunshine: 8h and 48min).
The months with the least sunshine are May and June (Average sunshine: 7h and 6min).
Average sunshine days in December
Jari, Brazil
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is August (19.5 days).
The month with the least sunshine days is February (11 days).
Average UV index in December
Jari, Brazil
- Average UV index in December: 6
The months with the highest UV index are January, February, March, November and December (UV index 6).
The month with the lowest UV index is May (UV index 3).
Average cloud cover in December
Jari, Brazil
- Average cloud cover in December: 28
The month with the most cloud cover is May (Cloud cover 40).
The month with the least cloud cover is November (Cloud cover 26).
Average visibility in December
Jari, Brazil
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is May (8km).
