nomadseason

December Weather in Santo Antonio, Sao Tome and Principe

Last updated: August 31, 2025

In December, the average temperature in Santo Antonio, Sao Tome and Principe is a warm 27°C (80°F). Expect minimum temperatures around 25°C (77°F) and a toasty maximum of 29°C (84°F). During this time, precipitation levels reach 172 mm (6.8 in) over 28 days, while the air carries an average humidity of 76%.

December Temperature in Santo Antonio

In December in Santo Antonio, the average temperature is 27°C (80°F), with maximums reaching 29°C (84°F) and minimums dropping to as low as 25°C (77°F). This pleasant climate makes it an ideal destination for travelers seeking warm weather and outdoor activities.

December Weather in Santo Antonio: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santo Antonio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Antonio, December typically has an average temperature of 27°C (80°F), with highs reaching up to 29°C (84°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec818282828179787778798080
Data source: Temperature data for Santo Antonio 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 Santo Antonio

In Santo Antonio in December, the total precipitation amount is 172 mm (6.8 in) over a span of 28 days.

December Precipitation Trends in Santo Antonio

The chart displays monthly precipitation patterns in Santo Antonio, 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 Santo Antonio, December typically receives around 172 mm (6.8 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec10196159194213156111111259286261172
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Santo Antonio

In Santo Antonio in December, humidity is 76%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket enveloping you, making outdoor activities and travel a bit challenging as you navigate the sticky air and sweat-drenched clothing.

December Average Humidity in Santo Antonio

This chart illustrates the average monthly humidity levels in Santo Antonio, 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 Santo Antonio is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%75%73%74%75%76%77%83%86%85%81%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santo Antonio

In Santo Antonio in December, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Santo Antonio.

Maximum UV Index Levels in Santo Antonio for December

The chart shows the monthly maximum UV Index (UVI) for Santo Antonio 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 Santo Antonio typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121214141311101113131211
Data source: Santo Antonio 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 Santo Antonio Compares to Other Months

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

This table compares monthly weather conditions in Santo Antonio, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)101 mm (4.0 inches)75%extreme
February Weather28°C (82°F)96 mm (3.8 inches)75%extreme
March Weather28°C (82°F)159 mm (6.2 inches)73%extreme
April Weather28°C (82°F)194 mm (7.6 inches)74%extreme
May Weather27°C (81°F)212 mm (8.4 inches)75%extreme
June Weather26°C (80°F)156 mm (6.2 inches)76%extreme
July Weather25°C (78°F)111 mm (4.4 inches)76%very high
August Weather25°C (78°F)111 mm (4.4 inches)83%extreme
September Weather26°C (78°F)259 mm (10.2 inches)86%extreme
October Weather26°C (79°F)286 mm (11.2 inches)85%extreme
November Weather26°C (80°F)261 mm (10.3 inches)81%extreme
December Weather27°C (80°F)172 mm (6.8 inches)76%extreme

Compare Santo Antonio's Climate with Cities Worldwide