December weather forecastMarapoama, Brazil

December

Weather in December

December, the first month of the summer in Marapoama, is still a warm month, with temperature in the range of an average low of 21°C (69.8°F) and an average high of 29.4°C (84.9°F).

Temperature

December experiences an average high-temperature of a still moderately hot 29.4°C (84.9°F), barely different from November's 29.9°C (85.8°F). In Marapoama, an average temperature of 21°C (69.8°F) is noted during December nights.

Heat index

The heat index value for December is computed to be a torrid 36°C (96.8°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The average relative humidity in December is 80%.

Rainfall

In December, the rain falls for 27.7 days. Throughout December, 183mm (7.2") of precipitation is accumulated. Throughout the year, there are 204.1 rainfall days, and 1207mm (47.52") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 13h and 24min of daylight.
On the first day of the month, sunrise is at 05:25 and sunset at 18:45. On the last day of December, sunrise is at 05:37 and sunset at 19:01 -03.

Sunshine

In December, the average sunshine is 7.6h.

UV index

The months with the highest UV index are January through April, June through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Updated: Jul 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in December, in Marapoama, is 29.4°C (84.9°F), while the average low-temperature is 21°C (69.8°F). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in December is computed to be 36°C (96.8°F).

In December, the average relative humidity is 80%.

In December, the rain falls for 27.7 days. Throughout December, 183mm (7.2") of precipitation is accumulated.

With an average of 13h and 24min of daylight, December has the longest days of the year.

In Marapoama, the average day length in December is 13h and 24min.

On the first day of December, sunrise is at 05:25 and sunset at 18:45. On the last day of the month, sunrise is at 05:37 and sunset at 19:01 -03.

In Marapoama, the average sunshine duration in December is 7.6h.

The months with the highest UV index are January through April, June through December, with an average maximum UV index of 6.

In Marapoama, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

29.9°C

29.4°C

28.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.5km/h

9.2km/h

8.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

5.1

2.5

1.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Marapoama, Brazil

Average high temperature in December: 29.4°C

The warmest month (with the highest average high temperature) is October (31.4°C).
The month with the lowest average high temperature is June (24.7°C).

Average low temperature in December: 21°C

The month with the highest average low temperature is December (21°C).
The coldest month (with the lowest average low temperature) is June (15.3°C).

Average pressure in December
Marapoama, Brazil

Average pressure in December: 1010.4mbar

The month with the highest atmospheric pressure is July (1018.3mbar).
The months with the lowest atmospheric pressure are November and December (1010.4mbar).

Average wind speed in December
Marapoama, Brazil

Average wind speed in December: 8.3km/h

The windiest month (with the highest average wind speed) is August (10.6km/h).
The calmest month (with the lowest average wind speed) is February (7.4km/h).

Average humidity in December
Marapoama, Brazil

Average humidity in December: 80%

The month with the highest relative humidity is March (86%).
The months with the lowest relative humidity are August and September (54%).

Average rainfall in December
Marapoama, Brazil

Average rainfall in December: 183mm

The wettest month (with the highest rainfall) is January (226mm).
The driest month (with the least rainfall) is July (8mm).

Average rainfall days in December
Marapoama, Brazil

Average rainfall days in December: 27.7 days

The month with the highest number of rainy days is January (28.7 days).
The month with the least rainy days is August (3.9 days).

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

Average daylight in December: 13h and 24min

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 36min

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 0min).

Average sunshine days in December
Marapoama, Brazil

Average sunshine days in December: 2.5 days

The month with the most sunshine days is August (26.6 days).
The month with the least sunshine days is February (1.3 days).

Average UV index in December
Marapoama, Brazil

Average UV index in December: 6

The months with the highest UV index are January, February, March, April, June, July, August, September, October, November and December (UV index 6).
The month with the lowest UV index is May (UV index 5).

Average cloud cover in December
Marapoama, Brazil

Average cloud cover in December: 49

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in December
Marapoama, Brazil

Average visibility in December: 8km

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 (8km).