December weather forecast and climate
Natal, Brazil

Weather in December

December, the first month of the summer, in Natal, is still a warm month, with average temperature varying between 25.8°C (78.4°F) and 29.3°C (84.7°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a still moderately hot 29.3°C (84.7°F). In Natal, the average low-temperature is 25.8°C (78.4°F).

Heat index

In December, the average heat index is estimated at a tropical 34.2°C (93.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, clothing, wind, and differences in body mass, height, and shape affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Natal, Brazil, the average relative humidity is 74%.

Rainfall

In Natal, it is raining for 17 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, there are 195.4 rainfall days, and 692mm (27.24") of precipitation is accumulated.

Sea temperature

In Natal, Brazil, the average seawater temperature in December is 27.6°C (81.7°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

With an average of 12.5h of daylight, December has the longest days of the year.

Sunshine

In Natal, the average sunshine is 8.2h.

UV index

Months with the highest UV index are January through December, with an average maximum UV index of 7. Months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in December in Natal?

In Natal, in December, the average high-temperature is 29.3°C (84.7°F), and the average low-temperature is 25.8°C (78.4°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), that takes the relative humidity and factores it into the air temperature reading, in December is estimated at 34.2°C (93.6°F).

What is the average humidity in December in Natal?

In December, the average relative humidity is 74%.

How much does it rain in Natal in December?

In Natal, Brazil, in December, during 17 rainfall days, 27mm (1.06") of precipitation is typically accumulated.

What is the sea water temperature in December in Natal?

In Natal, the average seawater temperature in December is 27.6°C (81.7°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

When are the longest days in Natal?

With an average of 12.5h of daylight, December has the longest days of the year.

What is the average length of the day in December in Natal?

The average length of the day in December in Natal is 12.5h.

How many hours of sunshine does Natal have in December?

The average sunshine in December in Natal, Brazil, is 8.2h.

When is the highest UV index in Natal?

January through December, with an average maximum UV index of 7, are months with the highest UV index in Natal.

What is the month with the lowest UV index in Natal?

January through December, with an average maximum UV index of 7, are months with the lowest UV index in Natal, Brazil.

What is the UV index intensity in December in Natal?

The average daily maximum UV index in December is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in December
Natal, Brazil

Average temperature in December - Natal, Brazil
  • Average high temperature in December: 29.3°C

The warmest month (with the highest average high temperature) is March (30.2°C).
The month with the lowest average high temperature is July (27.8°C).

  • Average low temperature in December: 25.8°C

The month with the highest average low temperature is March (26.3°C).
The coldest months (with the lowest average low temperature) are July and August (23.8°C).

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Average pressure in December
Natal, Brazil

Average pressure in December - Natal, Brazil
  • Average pressure in December: 1011.5mbar

The month with the highest atmospheric pressure is August (1015mbar).
The month with the lowest atmospheric pressure is February (1011.2mbar).

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Average wind speed in December
Natal, Brazil

Average wind speed in December - Natal, Brazil
  • Average wind speed in December: 22km/h

The windiest month (with the highest average wind speed) is September (26.2km/h).
The calmest months (with the lowest average wind speed) are March and April (17.9km/h).

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Average humidity in December
Natal, Brazil

Average humidity in December - Natal, Brazil
  • Average humidity in December: 74%

Months with the highest relative humidity are June and July (79%).
Months with the lowest relative humidity are October and November (73%).

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Average rainfall in December
Natal, Brazil

Average rainfall in December - Natal, Brazil
  • Average rainfall in December: 27mm

The wettest month (with the highest rainfall) is March (134mm).
The driest months (with the least rainfall) are September and October (7mm).

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Average rainfall days in December
Natal, Brazil

Average rainfall days in December - Natal, Brazil
  • Average rainfall days in December: 17 days

The month with the highest number of rainy days is April (23.4 days).
The month with the least rainy days is September (8 days).

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Average sea temperature in December
Natal, Brazil

Average sea temperature in December - Natal, Brazil
  • Average sea temperature in December: 27.6°C

The best months for swimming (with the highest average sea temperature) are March and April (28.8°C).
The coldest month (with the lowest average sea temperature) is September (26.7°C).

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Average daylight in December /
Average sunshine in December
Natal, Brazil

Average daylight in December / Average sunshine in December - Natal, Brazil
  • Average daylight in December: 12.5h

The month with the longest days is December (Average daylight: 12.5h).
Months with the shortest days are June and July (Average daylight: 11.8h).

  • Average sunshine in December: 8.2h

The month with the most sunshine is October (Average sunshine: 8.4h).
The month with the least sunshine is July (Average sunshine: 7h).

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Average sunshine days in December
Natal, Brazil

Average sunshine days in December - Natal, Brazil
  • Average sunshine days in December: 3.1 days

The month with the most sunshine days is August (18.8 days).
The month with the least sunshine days is February (1.3 days).

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Average UV index in December
Natal, Brazil

Average UV index in December - Natal, Brazil
  • Average UV index in December: 7

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

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Average cloud cover in December
Natal, Brazil

Average cloud cover in December - Natal, Brazil
  • Average cloud cover in December: 39

The month with the most cloud cover is July (Cloud cover 48).
Months with the least cloud cover are October and November (Cloud cover 37).

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Average visibility in December
Natal, Brazil

Average visibility in December - Natal, Brazil
  • Average visibility in December: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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