December weather forecastItanhaém, Brazil
December
Weather in December
December, the first month of the summer in Itanhaém, is still a warm month, with an average temperature ranging between max 26°C (78.8°F) and min 21.5°C (70.7°F).Temperature
As December takes its course, Itanhaém's average high-temperature registers at a still warm 26°C (78.8°F), closely aligning with the preceding month. Itanhaém records a slight downturn to an average an agreeable 21.5°C (70.7°F) during the nights of December.Humidity
The average relative humidity in December in Itanhaém is 85%.Rainfall
In December, in Itanhaém, the rain falls for 21.8 days. Throughout December, 76mm (2.99") of precipitation is accumulated. In Itanhaém, during the entire year, the rain falls for 205.3 days and collects up to 750mm (29.53") of precipitation.Sea temperature
In Itanhaém, the average seawater temperature in December is 24.8°C (76.6°F).Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.8°C (76.6°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)
Daylight
December has the longest days of the year in Itanhaém, with an average of 13h and 36min of daylight.On the first day of the month, sunrise is at 05:10 and sunset at 18:42. On the last day of December, in Itanhaém, sunrise is at 05:22 and sunset at 18:58 -03.
Sunshine
In December, the average sunshine in Itanhaém is 7.1h.UV index
The months with the highest UV index in Itanhaém, Brazil, are January through March, June and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 6 transforms into these recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Itanhaém, Brazil
- Average high temperature in December: 26°C
The warmest month (with the highest average high temperature) is February (27.6°C).
The month with the lowest average high temperature is July (21.4°C).
- Average low temperature in December: 21.5°C
The months with the highest average low temperature are January and February (22.5°C).
The coldest month (with the lowest average low temperature) is August (16.3°C).
Average pressure in December
Itanhaém, Brazil
- Average pressure in December: 1011.5mbar
The month with the highest atmospheric pressure is July (1020.1mbar).
The month with the lowest atmospheric pressure is December (1011.5mbar).
Average wind speed in December
Itanhaém, Brazil
- Average wind speed in December: 10.3km/h
The windiest month (with the highest average wind speed) is November (11.2km/h).
The calmest month (with the lowest average wind speed) is February (9.4km/h).
Average humidity in December
Itanhaém, Brazil
- Average humidity in December: 85%
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is August (81%).
Average rainfall in December
Itanhaém, Brazil
- Average rainfall in December: 76mm
The wettest month (with the highest rainfall) is January (112mm).
The driest month (with the least rainfall) is August (35mm).
Average rainfall days in December
Itanhaém, Brazil
- Average rainfall days in December: 21.8 days
The month with the highest number of rainy days is January (23.7 days).
The month with the least rainy days is August (10.4 days).
Average sea temperature in December
Itanhaém, Brazil
- Average sea temperature in December: 24.8°C
The best month for swimming (with the highest average sea temperature) is February (27.3°C).
The coldest month (with the lowest average sea temperature) is September (20.3°C).
Average daylight in December /
Average sunshine in December
Itanhaém, Brazil
- Average daylight in December: 13h and 36min
The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).
- Average sunshine in December: 7h and 6min
The months with the most sunshine are February and April (Average sunshine: 7h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 30min).
Average sunshine days in December
Itanhaém, Brazil
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is August (18.1 days).
The month with the least sunshine days is February (4 days).
Average UV index in December
Itanhaém, Brazil
- Average UV index in December: 6
The months with the highest UV index are January, February, March, June and December (UV index 6).
The months with the lowest UV index are April, May, July, August, September, October and November (UV index 5).
Average cloud cover in December
Itanhaém, Brazil
- Average cloud cover in December: 50
The month with the most cloud cover is November (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Itanhaém, Brazil
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May and June (10km).
The months with the lowest visibility are July, August, September, October, November and December (9km).
