nomadseason

December Weather in Sao Tome, Brazil

Last updated: August 22, 2025

In December, the average temperature in Sao Tome, Brazil reaches a delightful 27°C (82°F). Expect a cozy minimum of 21°C (70°F) and a warm maximum of 35°C (96°F). With an average humidity of 70% and 18 mm (0.7 in) of precipitation spread over 6 days, it's the perfect time to enjoy the vibrant atmosphere while staying prepared for the occasional shower!

December Temperature in Sao Tome

In December in Sao Tome, the average temperature is 27°C (82°F). Maximum can reach 35°C (96°F) and minimum can be as low as 21°C (70°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

December Weather in Sao Tome: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sao Tome, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Tome, December typically has an average temperature of 27°C (82°F), with highs reaching up to 35°C (96°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec818180797977767778808181
Data source: Temperature data for Sao Tome generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Sao Tome

In Sao Tome in December, the precipitation amount is 18 mm (0.7 in) over the course of 6 days.

December Precipitation Trends in Sao Tome

The chart displays monthly precipitation patterns in Sao Tome, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Sao Tome, December typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec3480987563335288111118
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Sao Tome

In Sao Tome in December, humidity is 70%. With an average temperature of 27°C (82°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel slightly sluggish but also inviting, as you step into a vibrant, lush atmosphere that encourages exploration at a leisurely pace.

December Average Humidity in Sao Tome

This chart illustrates the average monthly humidity levels in Sao Tome, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Sao Tome is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%89%90%89%90%86%80%77%72%68%66%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sao Tome

In Sao Tome in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Sao Tome, you can check here.

Maximum UV Index Levels in Sao Tome for December

The chart shows the monthly maximum UV Index (UVI) for Sao Tome in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Sao Tome typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415141311111213131414
Data source: Sao Tome December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Sao Tome Compares to Other Months

Weather in Sao Tome varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sao Tome, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sao Tome, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)34 mm (1.3 inches)86%extreme
February Weather27°C (81°F)80 mm (3.1 inches)89%extreme
March Weather27°C (80°F)98 mm (3.9 inches)89%extreme
April Weather26°C (80°F)75 mm (2.9 inches)89%extreme
May Weather26°C (79°F)63 mm (2.5 inches)90%extreme
June Weather25°C (78°F)33 mm (1.3 inches)86%extreme
July Weather24°C (76°F)52 mm (2.1 inches)80%extreme
August Weather25°C (77°F)8 mm (0.3 inches)77%extreme
September Weather26°C (79°F)8 mm (0.3 inches)72%extreme
October Weather27°C (80°F)11 mm (0.4 inches)68%extreme
November Weather27°C (81°F)10 mm (0.4 inches)66%extreme
December Weather27°C (82°F)18 mm (0.7 inches)70%extreme

Compare Sao Tome's Climate with Cities Worldwide