December weather forecast
Santo Antônio do Içá, Brazil

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Weather in December

December, the first month of the summer in Santo Antônio do Içá, is still a tropical month, with an average temperature varying between 22.5°C (72.5°F) and 30.3°C (86.5°F).

Temperature

In December, Santo Antônio do Içá experiences a minor shift in meteorological conditions with average high-temperatures marked at a still tropical 30.3°C (86.5°F), closely mirroring the climate in November. Santo Antônio do Içá experiences a mean low-temperature of 22.5°C (72.5°F) during December.

Heat index

For most parts of December, the heat index is appraised at a scorching 42°C (107.6°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Santo Antônio do Içá, the average relative humidity in December is 89%.

Rainfall

The month with the most rainfall is December, when the rain falls for 29.8 days and typically aggregates up to 260mm (10.24") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 18min of daylight.
On the first day of the month, sunrise is at 06:12 and sunset at 18:29. On the last day of December, in Santo Antônio do Içá, sunrise is at 06:26 and sunset at 18:44 -04.

Sunshine

In December, the average sunshine in Santo Antônio do Içá is 5.7h.

UV index

January through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 6 in December translates into these instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

How hot does it get in Santo Antônio do Içá in December?

December temperatures in Santo Antônio do Içá vary between a high-temperature of 30.3°C (86.5°F) and a low-temperature of 22.5°C (72.5°F). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in December is appraised at 42°C (107.6°F).

What is the average humidity in December in Santo Antônio do Içá?

In December, the average relative humidity is 89%.

What is the rainiest month in Santo Antônio do Içá?

The month with the most rainfall in Santo Antônio do Içá is December, when the rain falls for 29.8 days and typically aggregates up to 260mm (10.24") of precipitation.

How much does it rain in Santo Antônio do Içá in December?

In December, in Santo Antônio do Içá, Brazil, the rain falls for 29.8 days. Throughout December, 260mm (10.24") of precipitation is accumulated.

When are the longest days in Santo Antônio do Içá?

With an average of 12h and 18min of daylight, December has the longest days of the year.

How many hours of daylight does Santo Antônio do Içá have in December?

In December, the average day length is 12h and 18min.

When is the sunrise / sunset in December in Santo Antônio do Içá?

On the first day of December in Santo Antônio do Içá, sunrise is at 06:12 and sunset at 18:29. On the last day of the month, sunrise is at 06:26 and sunset at 18:44 -04.

How long on average sun shines in December in Santo Antônio do Içá?

The average sunshine duration in December in Santo Antônio do Içá is 5.7h.

What are the months with the lowest UV index in Santo Antônio do Içá?

The months with the lowest UV index in Santo Antônio do Içá are January through June, November and December, with an average maximum UV index of 6.

How high is the UV index in December in Santo Antônio do Içá?

In December, the average daily maximum UV index in Santo Antônio do Içá is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Average temperature in December
Santo Antônio do Içá, Brazil

Average temperature in December - Santo Antônio do Içá, Brazil
  • Average high temperature in December: 30.3°C

The warmest month (with the highest average high temperature) is September (33.5°C).
The months with the lowest average high temperature are January and May (29.8°C).

  • Average low temperature in December: 22.5°C

The month with the highest average low temperature is October (22.7°C).
The coldest month (with the lowest average low temperature) is July (20.7°C).

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Average pressure in December
Santo Antônio do Içá, Brazil

Average pressure in December - Santo Antônio do Içá, Brazil
  • Average pressure in December: 1009.2mbar

The month with the highest atmospheric pressure is July (1012.6mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).

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Average wind speed in December
Santo Antônio do Içá, Brazil

Average wind speed in December - Santo Antônio do Içá, Brazil
  • Average wind speed in December: 3.4km/h

The windiest months (with the highest average wind speed) are August, September, October and November (3.6km/h).
The calmest month (with the lowest average wind speed) is May (3.2km/h).

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Average humidity in December
Santo Antônio do Içá, Brazil

Average humidity in December - Santo Antônio do Içá, Brazil
  • Average humidity in December: 89%

The months with the highest relative humidity are January, February, March, April and May (90%).
The month with the lowest relative humidity is September (76%).

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Average rainfall in December
Santo Antônio do Içá, Brazil

Average rainfall in December - Santo Antônio do Içá, Brazil
  • Average rainfall in December: 260mm

The wettest month (with the highest rainfall) is December (260mm).
The driest month (with the least rainfall) is August (59mm).

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Average rainfall days in December
Santo Antônio do Içá, Brazil

Average rainfall days in December - Santo Antônio do Içá, Brazil
  • Average rainfall days in December: 29.8 days

The month with the highest number of rainy days is January (29.9 days).
The month with the least rainy days is August (19.8 days).

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Average daylight in December /
Average sunshine in December
Santo Antônio do Içá, Brazil

Average daylight in December / Average sunshine in December - Santo Antônio do Içá, Brazil
  • Average daylight in December: 12h and 2min

The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is August (Average sunshine: 8h and 24min).
The months with the least sunshine are March and April (Average sunshine: 5h and 36min).

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Average sunshine days in December
Santo Antônio do Içá, Brazil

Average sunshine days in December - Santo Antônio do Içá, Brazil
  • Average sunshine days in December: 1 days

The month with the most sunshine days is August (9.8 days).
The month with the least sunshine days is January (0.8 days).

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Average UV index in December
Santo Antônio do Içá, Brazil

Average UV index in December - Santo Antônio do Içá, Brazil
  • Average UV index in December: 6

The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).

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Average cloud cover in December
Santo Antônio do Içá, Brazil

Average cloud cover in December - Santo Antônio do Içá, Brazil
  • Average cloud cover in December: 68

The month with the most cloud cover is April (Cloud cover 70).
The months with the least cloud cover are August and September (Cloud cover 42).

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Average visibility in December
Santo Antônio do Içá, Brazil

Average visibility in December - Santo Antônio do Içá, Brazil
  • Average visibility in December: 6km

The months with the highest visibility are August and September (8km).
The month with the lowest visibility is April (5km).

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Santo Antônio do Içá, Brazil

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