December weather forecast
Chamico, São Tomé and Príncipe

December

Weather in December

Rounding up the year, December maintains similar temperature patterns with November, with highs of 27.5°C (81.5°F) and lows of 26.6°C (79.9°F). Despite being the last month of the year, the wind speeds in December settle lower than the yearly average, concluding at 10.8km/h (6.7mph). The city experiences a decrease in rainfall to 159mm (6.26"). The drop in precipitation is accompanied by a decrease in humidity to 79%. An increase in hours of sunshine per day occurs in December, making it suitable for outdoor activities to celebrate the end of the year.

Temperature

The arrival of December is marked by an average high-temperature of a still moderately hot 27.5°C (81.5°F), bearing a close resemblance to November. Chamico observes a consistent average low-temperature of 26.6°C (79.9°F) throughout December nights.

Heat index

December's mean heat index is appraised at a hot 31°C (87.8°F). With extended exposure and activity, one might feel exhausted and experience heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

In Chamico, the average relative humidity in December is 79%.

Rainfall

In December, in Chamico, the rain falls for 28.6 days. Throughout December, 159mm (6.26") of precipitation is accumulated. In Chamico, São Tomé and Príncipe, during the entire year, the rain falls for 241.7 days and collects up to 1287mm (50.67") of precipitation.

Daylight

January, November and December, with an average of 12h and 6min of daylight, are months with the shortest days.
On the first day of the month, sunrise is at 05:19 and sunset at 17:25. On the last day of December, in Chamico, sunrise is at 05:33 and sunset at 17:39 GMT.

Sunshine

The average sunshine in December in Chamico is 8.2h.

UV index

January through May, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Opt for tightly woven and loose clothing to enhance protection from the Sun.

Frequently asked questions

What is the temperature in December in Chamico?
In Chamico, 27.5°C (81.5°F) is the average high-temperature and 26.6°C (79.9°F) is the average low-temperature during December. In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is appraised at 31°C (87.8°F).
What is the average humidity in December in Chamico?
The average relative humidity in December in Chamico is 79%.
How much does it rain in Chamico in December?
In Chamico, São Tomé and Príncipe, in December, it is raining for 28.6 days, with typically 159mm (6.26") of accumulated precipitation.
What is the month with the shortest days in Chamico?
The months with the shortest days in Chamico, São Tomé and Príncipe, are January, November and December, with an average of 12h and 6min of daylight.
What is the average length of the day in December in Chamico?
In Chamico, São Tomé and Príncipe, the average day length in December is 12h and 7min.
When are sunrise and sunset in December in Chamico?
On the first day of December, sunrise is at 05:19 and sunset at 17:25. On the last day of the month, sunrise is at 05:33 and sunset at 17:39 GMT.
How many hours of sunshine does Chamico have in December?
The average sunshine duration in December in Chamico is 8.2h.
What is the month with the highest UV index in Chamico?
The months with the highest UV index are January through May, October through December, with an average maximum UV index of 7.
What is the UV index reading in December in Chamico?
The average daily maximum UV index in December in Chamico is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Chamico, São Tomé and Príncipe
Average temperature in December
Chamico, São Tomé and Príncipe
  • Average high temperature in December: 27.5°C

The warmest month (with the highest average high temperature) is March (28.8°C).
The month with the lowest average high temperature is July (24.5°C).

  • Average low temperature in December: 26.6°C

The month with the highest average low temperature is March (27.5°C).
The coldest month (with the lowest average low temperature) is July (23°C).

Average pressure in December - Chamico, São Tomé and Príncipe
Average pressure in December
Chamico, São Tomé and Príncipe
  • Average pressure in December: 1010.6mbar

The month with the highest atmospheric pressure is July (1014.3mbar).
The month with the lowest atmospheric pressure is February (1009.8mbar).

Average wind speed in December - Chamico, São Tomé and Príncipe
Average wind speed in December
Chamico, São Tomé and Príncipe
  • Average wind speed in December: 10.8km/h

The windiest month (with the highest average wind speed) is July (17.7km/h).
The calmest month (with the lowest average wind speed) is December (10.8km/h).

Average humidity in December - Chamico, São Tomé and Príncipe
Average humidity in December
Chamico, São Tomé and Príncipe
  • Average humidity in December: 79%

The months with the highest relative humidity are August, September and October (83%).
The month with the lowest relative humidity is March (76%).

Average rainfall in December - Chamico, São Tomé and Príncipe
Average rainfall in December
Chamico, São Tomé and Príncipe
  • Average rainfall in December: 159mm

The wettest month (with the highest rainfall) is November (224mm).
The driest month (with the least rainfall) is July (9mm).

Average rainfall days in December - Chamico, São Tomé and Príncipe
Average rainfall days in December
Chamico, São Tomé and Príncipe
  • Average rainfall days in December: 28.6 days

The month with the highest number of rainy days is December (28.6 days).
The month with the least rainy days is June (7.3 days).

Average daylight in December / Average sunshine in December - Chamico, São Tomé and Príncipe
Average daylight in December /
Average sunshine in December
Chamico, São Tomé and Príncipe
  • Average daylight in December: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 6min).
The months with the shortest days are January, November and December (Average daylight: 12h and 6min).

  • Average sunshine in December: 8h and 1min

The month with the most sunshine is February (Average sunshine: 8h and 36min).
The month with the least sunshine is August (Average sunshine: 5h and 0min).

Average sunshine days in December - Chamico, São Tomé and Príncipe
Average sunshine days in December
Chamico, São Tomé and Príncipe
  • Average sunshine days in December: 1.5 days

The month with the most sunshine days is June (16.4 days).
The month with the least sunshine days is December (1.5 days).

Average UV index in December - Chamico, São Tomé and Príncipe
Average UV index in December
Chamico, São Tomé and Príncipe
  • Average UV index in December: 7

The months with the highest UV index are January, February, March, April, May, October, November and December (UV index 7).
The month with the lowest UV index is July (UV index 5).

Average cloud cover in December - Chamico, São Tomé and Príncipe
Average cloud cover in December
Chamico, São Tomé and Príncipe
  • Average cloud cover in December: 41

The month with the most cloud cover is August (Cloud cover 65).
The month with the least cloud cover is February (Cloud cover 37).

Average visibility in December - Chamico, São Tomé and Príncipe
Average visibility in December
Chamico, São Tomé and Príncipe
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).

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