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
With the start of December, Morretes measures an average high-temperature of a still warm 28.5°C (83.3°F), not significantly differing from November's 26.2°C (79.2°F). Morretes records an average nighttime low of 20.2°C (68.4°F) in December.Heat index
In December, the heat index is computed to be a hot 34°C (93.2°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
January, February and December, with an average relative humidity of 82%, are the least humid months.Rainfall
In Morretes, during December, the rain falls for 21.6 days and regularly aggregates up to 107mm (4.21") of precipitation. Throughout the year, there are 204.4 rainfall days, and 1031mm (40.59") of precipitation is accumulated.Daylight
With an average of 13h and 42min of daylight, December has the longest days of the year in Morretes, Brazil.On the first day of the month, sunrise is at 05:16 and sunset at 18:53. On the last day of December, in Morretes, sunrise is at 05:27 and sunset at 19:09 -03.
Sunshine
In December, the average sunshine in Morretes is 6.6h.UV index
January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Morretes. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 in December translates into these instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Morretes during December?
What are the least humid months in Morretes?
What is the average humidity in December in Morretes?
How many days does it rain in December in Morretes?
When are the longest days in Morretes?
What is the average length of the day in December in Morretes?
When are sunrise and sunset in December in Morretes?
How long on average sun shines in December in Morretes?
What are the months with the highest UV index in Morretes?
What is the UV index reading in December in Morretes?
Average temperature in December
Morretes, Brazil
- Average high temperature in December: 28.5°C
The warmest month (with the highest average high temperature) is January (29.4°C).
The month with the lowest average high temperature is July (21.3°C).
- Average low temperature in December: 20.2°C
The month with the highest average low temperature is January (21.3°C).
The coldest month (with the lowest average low temperature) is July (14.1°C).
Average pressure in December
Morretes, Brazil
- Average pressure in December: 1011.9mbar
The month with the highest atmospheric pressure is July (1020.2mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).
Average wind speed in December
Morretes, Brazil
- Average wind speed in December: 6.7km/h
The windiest month (with the highest average wind speed) is November (7km/h).
The calmest months (with the lowest average wind speed) are June, July and August (5.9km/h).
Average humidity in December
Morretes, Brazil
- Average humidity in December: 82%
The months with the highest relative humidity are May, June and July (85%).
The months with the lowest relative humidity are January, February and December (82%).
Average rainfall in December
Morretes, Brazil
- Average rainfall in December: 107mm
The wettest month (with the highest rainfall) is February (141mm).
The driest months (with the least rainfall) are April and August (56mm).
Average rainfall days in December
Morretes, Brazil
- Average rainfall days in December: 21.6 days
The month with the highest number of rainy days is January (23.3 days).
The month with the least rainy days is August (11.6 days).
Average daylight in December /
Average sunshine in December
Morretes, Brazil
- Average daylight in December: 13h and 4min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in December: 6h and 4min
The months with the most sunshine are January, April and August (Average sunshine: 6h and 54min).
The months with the least sunshine are October and November (Average sunshine: 6h and 6min).
Average sunshine days in December
Morretes, Brazil
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is July (17.3 days).
The month with the least sunshine days is January (5 days).
Average UV index in December
Morretes, 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 months with the lowest UV index are April, May, June, July, August, September and October (UV index 5).
Average cloud cover in December
Morretes, Brazil
- Average cloud cover in December: 58
The months with the most cloud cover are October and November (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 49).
Average visibility in December
Morretes, Brazil
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, August, September and December (8km).
The months with the lowest visibility are July, October and November (7km).
