December weather forecast
Mamonas, Brazil

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Weather in December

The first month of the summer, December, is also a moderately hot month in Mamonas, Brazil, with an average temperature fluctuating between 28.5°C (83.3°F) and 19.1°C (66.4°F).

Temperature

During December, Mamonas sees a high temperature of a still moderately hot 28.5°C (83.3°F), reflecting a continuity from November. Mamonas's average low-temperature in December is measured at a comfortable 19.1°C (66.4°F).

Heat index

Throughout December, the heat index is computed to be a tropical 33°C (91.4°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

In December, the average relative humidity in Mamonas is 78%.

Rainfall

In Mamonas, during December, the rain falls for 23 days and regularly aggregates up to 109mm (4.29") of precipitation. In Mamonas, during the entire year, the rain falls for 151.8 days and collects up to 685mm (26.97") of precipitation.

Daylight

The month with the longest days in Mamonas is December, with an average of 13h and 0min of daylight.
On the first day of December, sunrise is at 05:12 and sunset at 18:09. On the last day of the month, sunrise is at 05:24 and sunset at 18:25 -03.

Sunshine

The average sunshine in December in Mamonas is 8.3h.

UV index

The average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 during December leads to these advisories:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

How hot does it get in Mamonas in December?

An average high-temperature, in December, in Mamonas, is 28.5°C (83.3°F) and the average low-temperature is 19.1°C (66.4°F). In December, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 33°C (91.4°F).

What is the average humidity in December in Mamonas?

In Mamonas, Brazil, the average relative humidity in December is 78%.

How much does it rain in Mamonas in December?

In Mamonas, Brazil, during December, the rain falls for 23 days and regularly aggregates up to 109mm (4.29") of precipitation.

When are the longest days in Mamonas?

The month with the longest days is December, with an average of 13h and 0min of daylight.

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

The average day length in December is 13h and 0min.

When are sunrise and sunset in December in Mamonas?

In December, on the first day of the month, sunrise is at 05:12 and sunset at 18:09. On the last day of the month, sunrise is at 05:24 and sunset at 18:25 -03.

How long on average sun shines in December in Mamonas?

In Mamonas, Brazil, the average sunshine duration in December is 8.3h.

What is the UV index reading in December in Mamonas?

In December, the average daily maximum UV index in Mamonas, Brazil, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Mamonas, Brazil

Average temperature in December - Mamonas, Brazil
  • Average high temperature in December: 28.5°C

The warmest month (with the highest average high temperature) is October (31.1°C).
The month with the lowest average high temperature is June (26.2°C).

  • Average low temperature in December: 19.1°C

The month with the highest average low temperature is November (19.2°C).
The coldest month (with the lowest average low temperature) is July (14.9°C).

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Average pressure in December
Mamonas, Brazil

Average pressure in December - Mamonas, Brazil
  • Average pressure in December: 1012.7mbar

The month with the highest atmospheric pressure is July (1019.5mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).

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Average wind speed in December
Mamonas, Brazil

Average wind speed in December - Mamonas, Brazil
  • Average wind speed in December: 7.7km/h

The windiest month (with the highest average wind speed) is August (11.8km/h).
The calmest month (with the lowest average wind speed) is March (7.4km/h).

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Average humidity in December
Mamonas, Brazil

Average humidity in December - Mamonas, Brazil
  • Average humidity in December: 78%

The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is September (54%).

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Average rainfall in December
Mamonas, Brazil

Average rainfall in December - Mamonas, Brazil
  • Average rainfall in December: 109mm

The wettest month (with the highest rainfall) is November (125mm).
The driest month (with the least rainfall) is July (1mm).

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Average rainfall days in December
Mamonas, Brazil

Average rainfall days in December - Mamonas, Brazil
  • Average rainfall days in December: 23 days

The month with the highest number of rainy days is December (23 days).
The month with the least rainy days is August (1.5 days).

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

Average daylight in December / Average sunshine in December - Mamonas, Brazil
  • Average daylight in December: 13h and 0min

The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 18min).

  • Average sunshine in December: 8h and 2min

The month with the most sunshine is September (Average sunshine: 9h and 48min).
The month with the least sunshine is November (Average sunshine: 8h and 6min).

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Average sunshine days in December
Mamonas, Brazil

Average sunshine days in December - Mamonas, Brazil
  • Average sunshine days in December: 6.8 days

The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is November (6.7 days).

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Average UV index in December
Mamonas, Brazil

Average UV index in December - Mamonas, Brazil
  • Average UV index in December: 6

The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are June and July (UV index 5).

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Average cloud cover in December
Mamonas, Brazil

Average cloud cover in December - Mamonas, Brazil
  • Average cloud cover in December: 42

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 16).

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Average visibility in December
Mamonas, Brazil

Average visibility in December - Mamonas, Brazil
  • Average visibility in December: 8km

The months with the highest visibility are July, August, September and October (10km).
The months with the lowest visibility are January, March, April and December (8km).

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Mamonas, Brazil

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