December weather forecast
Trindade, São Tomé and Príncipe

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Weather in December

December sees a slightly reduced rainfall from November levels, and a marginal increase in temperatures rounding off the weather trend for the year. The winds slow down further to a soothing 10.8km/h (6.7mph) contributing to a pleasant ambiance. The UV index remains constant at 7, under the partly cloudy sky. It's a great time to explore Trindade, taking into account the likely rainfall while planning activities.

Temperature

December's advent denotes a minor fluctuation in the average high-temperature to a still warm 27.5°C (81.5°F) from November's 27.1°C (80.8°F). Nights in December showcase an average temperature of 26.6°C (79.9°F), slightly cooler than the daytime.

Heat index

The heat index for December is calculated to be a tropical 31°C (87.8°F). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

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

Rainfall

In Trindade, during December, the rain falls for 28.6 days and regularly aggregates up to 159mm (6.26") of precipitation. In Trindade, during the entire year, the rain falls for 241.7 days and collects up to 1287mm (50.67") of precipitation.

Daylight

In December, the average length of the day in Trindade is 12h and 7min.
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.

Sunshine

In December, the average sunshine 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 health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 7 in December, converts into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

What are December temperatures?

In Trindade, 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. The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in December is calculated to be 31°C (87.8°F).

What is the average humidity in December?

In December, the average relative humidity is 79%.

How many days does it rain in December?

In December, the rain falls for 28.6 days. Throughout December, 159mm (6.26") of precipitation is accumulated.

What is the average length of the day in December?

In Trindade, the average day length in December is 12h and 7min.

When is the sunrise / sunset in December?

In December, on the first day of the month, 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 long on average sun shines in December in Trindade?

In December, the average sunshine duration in Trindade is 8.2h.

What are the months with the highest UV index?

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 intensity in December?

In Trindade, São Tomé and Príncipe, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in December
Trindade, São Tomé and Príncipe

Average temperature in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average pressure in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average wind speed in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average humidity in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average rainfall in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average rainfall days in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average daylight in December / Average sunshine in December - Trindade, 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 month with the shortest days is November (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
Trindade, São Tomé and Príncipe

Average sunshine days in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average UV index in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average cloud cover in December - Trindade, 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
Trindade, São Tomé and Príncipe

Average visibility in December - Trindade, 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).

Trindade, São Tomé and Príncipe

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