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
Weather in December
Temperature
In December, the average high-temperature registers at a still warm 28.1°C (82.6°F), nearly identical to November's 28.4°C (83.1°F). In São Joaquim da Barra, December is marked by an average low-temperature of 19.7°C (67.5°F).Heat index
Throughout December, the heat index is calculated to be a hot 33°C (91.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Be advised, the heat index considers values for conditions in shade and with a light breeze. 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 'real feel' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
In São Joaquim da Barra, the average relative humidity in December is 86%.Rainfall
In São Joaquim da Barra, in December, during 30.5 rainfall days, 220mm (8.66") of precipitation is typically accumulated. Throughout the year, there are 234.2 rainfall days, and 1492mm (58.74") of precipitation is accumulated.Daylight
The month with the longest days in São Joaquim da Barra is December, with an average of 13h and 24min of daylight.On the first day of the month, sunrise is at 05:21 and sunset at 18:39. On the last day of December, sunrise is at 05:33 and sunset at 18:55 -03.
Sunshine
In December, the average sunshine in São Joaquim da Barra is 7.6h.UV index
The months with the lowest UV index are January through June, November and December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 5 during December morphs into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
How hot is it in São Joaquim da Barra in December?
What is the average humidity in December in São Joaquim da Barra?
How much does it rain in São Joaquim da Barra in December?
When are the longest days in São Joaquim da Barra?
How many hours of daylight does São Joaquim da Barra have in December?
When are sunrise and sunset in December in São Joaquim da Barra?
How long on average sun shines in December in São Joaquim da Barra?
When is the lowest UV index in São Joaquim da Barra?
What is the UV index intensity in December in São Joaquim da Barra?
Average temperature in December
São Joaquim da Barra, Brazil
- Average high temperature in December: 28.1°C
The warmest month (with the highest average high temperature) is September (31.5°C).
The months with the lowest average high temperature are May and June (24.6°C).
- Average low temperature in December: 19.7°C
The month with the highest average low temperature is October (19.9°C).
The coldest months (with the lowest average low temperature) are June and July (14.8°C).
Average pressure in December
São Joaquim da Barra, Brazil
- Average pressure in December: 1011.2mbar
The month with the highest atmospheric pressure is July (1019.1mbar).
The months with the lowest atmospheric pressure are November and December (1011.2mbar).
Average wind speed in December
São Joaquim da Barra, Brazil
- Average wind speed in December: 7km/h
The windiest months (with the highest average wind speed) are August and September (9.3km/h).
The calmest month (with the lowest average wind speed) is February (6.3km/h).
Average humidity in December
São Joaquim da Barra, Brazil
- Average humidity in December: 86%
The month with the highest relative humidity is March (89%).
The month with the lowest relative humidity is September (50%).
Average rainfall in December
São Joaquim da Barra, Brazil
- Average rainfall in December: 220mm
The wettest month (with the highest rainfall) is January (251mm).
The driest month (with the least rainfall) is August (9mm).
Average rainfall days in December
São Joaquim da Barra, Brazil
- Average rainfall days in December: 30.5 days
The month with the highest number of rainy days is December (30.5 days).
The month with the least rainy days is August (4.3 days).
Average daylight in December /
Average sunshine in December
São Joaquim da Barra, Brazil
- Average daylight in December: 13h and 2min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in December: 7h and 4min
The months with the most sunshine are August and September (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 7h and 6min).
Average sunshine days in December
São Joaquim da Barra, Brazil
- Average sunshine days in December: 0.3 days
The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is December (0.3 days).
Average UV index in December
São Joaquim da Barra, Brazil
- Average UV index in December: 5
The months with the highest UV index are July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 5).
Average cloud cover in December
São Joaquim da Barra, Brazil
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
São Joaquim da Barra, Brazil
- Average visibility in December: 7km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May and December (7km).
São Joaquim da Barra, Brazil
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