Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
As November transitions into December, Ribeira Afonso records an average high-temperature of a still warm 27.5°C (81.5°F), showing a gentle shift from the preceding month. During December, Ribeira Afonso perceives a slight decrease in temperature from daytime highs, settling at an average low of 26.6°C (79.9°F).Heat index
The heat index in December is computed to be a hot 31°C (87.8°F). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
In December, the average relative humidity is 79%.Rainfall
In Ribeira Afonso, São Tomé and Príncipe, in December, it is raining for 28.6 days, with typically 159mm (6.26") of accumulated precipitation. Throughout the year, there are 241.7 rainfall days, and 1287mm (50.67") of precipitation is accumulated.Daylight
In Ribeira Afonso, São Tomé and Príncipe, the average length of the day in December 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 in Ribeira Afonso. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 7 during December morphs into the following directions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the average December temperature in Ribeira Afonso?
What is the average humidity in December in Ribeira Afonso?
How many days does it rain in December in Ribeira Afonso?
How many hours of daylight does Ribeira Afonso have in December?
What time are sunrise and sunset in December in Ribeira Afonso?
How many hours of sunshine does Ribeira Afonso have in December?
What is the month with the highest UV index in Ribeira Afonso?
What is the UV index intensity in December in Ribeira Afonso?
Average temperature in December
Ribeira Afonso, 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
Ribeira Afonso, 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
Ribeira Afonso, 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
Ribeira Afonso, 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
Ribeira Afonso, 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
Ribeira Afonso, 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
Ribeira Afonso, 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 February and October (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
Ribeira Afonso, 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
Ribeira Afonso, 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
Ribeira Afonso, 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
Ribeira Afonso, 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).
Ribeira Afonso, São Tomé and Príncipe
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