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
December
Weather in December
Temperature
Fortim, Brazil, indicates an average high-temperature of a still tropical 31°C (87.8°F) in December, showing minor variation from November's 31.1°C (88°F). Fortim, in December, observes a steady average low-temperature of 25.7°C (78.3°F).Heat index
During December, the heat index is computed to be a fiery hot 38°C (100.4°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
The average relative humidity in December is 70%.Rainfall
In Fortim, during December, the rain falls for 9.9 days and regularly aggregates up to 16mm (0.63") of precipitation. In Fortim, Brazil, during the entire year, the rain falls for 155.5 days and collects up to 547mm (21.54") of precipitation.Daylight
December has the longest days of the year, with an average of 12h and 24min of daylight.On the first day of the month, sunrise is at 05:09 and sunset at 17:31. On the last day of December, sunrise is at 05:23 and sunset at 17:45 -03.
Sunshine
In December, the average sunshine is 8.3h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Fortim are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: In December, a daily UV index of 7 turns into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in December?
What is the average humidity in December?
How much does it rain in December?
When are the longest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the highest UV index?
What is the month with the lowest UV index?
What is the UV index reading in December in Fortim?
Average temperature in December
Fortim, Brazil
- Average high temperature in December: 31°C
The warmest month (with the highest average high temperature) is October (31.4°C).
The month with the lowest average high temperature is July (29.9°C).
- Average low temperature in December: 25.7°C
The months with the highest average low temperature are January, February and December (25.7°C).
The coldest month (with the lowest average low temperature) is August (23°C).
Average pressure in December
Fortim, Brazil
- Average pressure in December: 1010.6mbar
The month with the highest atmospheric pressure is July (1014mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in December
Fortim, Brazil
- Average wind speed in December: 22.6km/h
The windiest month (with the highest average wind speed) is September (25.5km/h).
The calmest month (with the lowest average wind speed) is April (16.2km/h).
Average humidity in December
Fortim, Brazil
- Average humidity in December: 70%
The months with the highest relative humidity are April and May (77%).
The months with the lowest relative humidity are August and September (68%).
Average rainfall in December
Fortim, Brazil
- Average rainfall in December: 16mm
The wettest month (with the highest rainfall) is April (116mm).
The driest month (with the least rainfall) is September (1mm).
Average rainfall days in December
Fortim, Brazil
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is April (22.3 days).
The month with the least rainy days is September (2.5 days).
Average daylight in December /
Average sunshine in December
Fortim, Brazil
- Average daylight in December: 12h and 2min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in December: 8h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is March (Average sunshine: 8h and 6min).
Average sunshine days in December
Fortim, Brazil
- Average sunshine days in December: 14.2 days
The month with the most sunshine days is September (25.3 days).
The month with the least sunshine days is April (6.3 days).
Average UV index in December
Fortim, Brazil
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in December
Fortim, Brazil
- Average cloud cover in December: 33
The month with the most cloud cover is April (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in December
Fortim, 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).
