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
December's beginning signals an average high-temperature of a still moderately hot 28.7°C (83.7°F), barely different from November's 26.8°C (80.2°F). In Fortaleza dos Valos, an average nighttime temperature of 18.1°C (64.6°F) is expected during December.Heat index
December's heat index is estimated at a tropical 33°C (91.4°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'real feel', arises from combining readings of air temperature and relative moisture content. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
The least humid month in Fortaleza dos Valos is December, with an average relative humidity of 74%.Rainfall
In December, the rain falls for 16.2 days. Throughout December, 111mm (4.37") of precipitation is accumulated. Throughout the year, there are 174.4 rainfall days, and 1211mm (47.68") of precipitation is accumulated.Daylight
With an average of 13h and 54min of daylight, December has the longest days of the year in Fortaleza dos Valos.On the first day of December, sunrise is at 05:26 and sunset at 19:17. On the last day of the month, sunrise is at 05:37 and sunset at 19:34 -03.
Sunshine
December has the most sunshine of the year, with an average of 8.7h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 6 during December translates into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. 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. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Fortaleza dos Valos in December?
What is the least humid month in Fortaleza dos Valos?
What is the average humidity in December in Fortaleza dos Valos?
How much does it rain in Fortaleza dos Valos in December?
When are the longest days in Fortaleza dos Valos?
How many hours of daylight does Fortaleza dos Valos have in December?
When are sunrise and sunset in December in Fortaleza dos Valos?
What month has the most sunshine in Fortaleza dos Valos?
How many hours of sunshine does Fortaleza dos Valos have in December?
What are the months with the highest UV index in Fortaleza dos Valos?
How high is the UV index in December in Fortaleza dos Valos?
Average temperature in December
Fortaleza dos Valos, Brazil
- Average high temperature in December: 28.7°C
The warmest month (with the highest average high temperature) is January (28.9°C).
The month with the lowest average high temperature is July (17.6°C).
- Average low temperature in December: 18.1°C
The month with the highest average low temperature is January (18.5°C).
The coldest month (with the lowest average low temperature) is July (9.3°C).
Average pressure in December
Fortaleza dos Valos, Brazil
- Average pressure in December: 1010.3mbar
The month with the highest atmospheric pressure is July (1019.2mbar).
The month with the lowest atmospheric pressure is December (1010.3mbar).
Average wind speed in December
Fortaleza dos Valos, Brazil
- Average wind speed in December: 10.4km/h
The windiest month (with the highest average wind speed) is August (11.9km/h).
The calmest months (with the lowest average wind speed) are February, March and April (9.4km/h).
Average humidity in December
Fortaleza dos Valos, Brazil
- Average humidity in December: 74%
The months with the highest relative humidity are June and July (86%).
The month with the lowest relative humidity is December (74%).
Average rainfall in December
Fortaleza dos Valos, Brazil
- Average rainfall in December: 111mm
The wettest month (with the highest rainfall) is October (142mm).
The driest month (with the least rainfall) is August (77mm).
Average rainfall days in December
Fortaleza dos Valos, Brazil
- Average rainfall days in December: 16.2 days
The month with the highest number of rainy days is January (19.2 days).
The month with the least rainy days is August (12.2 days).
Average daylight in December /
Average sunshine in December
Fortaleza dos Valos, Brazil
- Average daylight in December: 13h and 5min
The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in December: 8h and 4min
The month with the most sunshine is December (Average sunshine: 8h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 6min).
Average sunshine days in December
Fortaleza dos Valos, Brazil
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is August (16.7 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in December
Fortaleza dos Valos, 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
Fortaleza dos Valos, Brazil
- Average cloud cover in December: 32
The month with the most cloud cover is May (Cloud cover 42).
The month with the least cloud cover is November (Cloud cover 30).
Average visibility in December
Fortaleza dos Valos, Brazil
- Average visibility in December: 9km
The months with the highest visibility are November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and October (8km).
