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 sea temperature 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 climate shows a minor adjustment in average high-temperatures to a still moderately hot 28.5°C (83.3°F) from November's 26.2°C (79.2°F). Guaratuba's temperature drops to an average low of 20.2°C (68.4°F) during the nights of December.Heat index
The heat index in December is estimated at a hot 34°C (93.2°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. 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. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Humidity
The months with the lowest humidity in Guaratuba are January, February and December, with an average relative humidity of 82%.Rainfall
In Guaratuba, Brazil, in December, during 21.6 rainfall days, 107mm (4.21") of precipitation is typically accumulated. Throughout the year, in Guaratuba, there are 204.4 rainfall days, and 1031mm (40.59") of precipitation is accumulated.Sea temperature
In December, the average sea temperature is 24.8°C (76.6°F).Note: Your comfort in 24.8°C (76.6°F) waters hinges on your relationship with the cold, today's sunny disposition, wind patterns, and the air's temperature. For context, Olympic swimmers are no strangers to waters of 25°C (77°F) to 28°C (82.4°F).
Daylight
With an average of 13h and 42min of daylight, December has the longest days of the year.On the first day of December, sunrise is at 05:14 and sunset at 18:52. On the last day of the month, sunrise is at 05:25 and sunset at 19:09 -03.
Sunshine
The average sunshine in December in Guaratuba is 6.6h.UV index
The months with the highest UV index in Guaratuba are January through March, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 6 translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Guaratuba in December?
What are the least humid months in Guaratuba?
What is the average humidity in December in Guaratuba?
How much does it rain in Guaratuba in December?
What is the sea temperature in December in Guaratuba?
When are the longest days in Guaratuba?
What is the average length of the day in December in Guaratuba?
When are sunrise and sunset in December in Guaratuba?
How many hours of sunshine does Guaratuba have in December?
What are the months with the highest UV index in Guaratuba?
What is the UV index reading in December in Guaratuba?
Average temperature in December
Guaratuba, 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
Guaratuba, 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
Guaratuba, 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
Guaratuba, 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
Guaratuba, 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
Guaratuba, 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 sea temperature in December
Guaratuba, Brazil
- Average sea temperature in December: 24.8°C
The best month for swimming (with the highest average sea temperature) is February (26.8°C).
The coldest month (with the lowest average sea temperature) is August (18.8°C).
Average daylight in December /
Average sunshine in December
Guaratuba, 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 30min).
- 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
Guaratuba, 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
Guaratuba, 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
Guaratuba, 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
Guaratuba, 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).
