December weather forecast
São Tomé and Príncipe

December in São Tomé and Príncipe experiences the full swing of the wet season, with rainfall levels continuing their upward trend from November. Typical precipitation during this month ranges from 110mm (4.33") to 140mm (5.51"), further contributing to the lush greenery that defines the islands' landscapes.

Despite the increase in rainfall, the temperature during December remains steady, usually ranging from 22°C (71.6°F) to 30°C (86°F). This pattern is observed throughout the country, including the coastal cities of São Tomé and Santo Antonio. However, regions at higher altitudes, like the Obo National Park, may experience slightly cooler temperatures due to their elevation.

As December transitions into January, weather conditions maintain high levels of rainfall and consistent temperatures, marking the continuation of the wet season. The ample rainfall of December nourishes the islands' flora and fauna, including the cocoa plantations that form an integral part of São Tomé and Príncipe's culture and economy. Despite the increased precipitation, the stable temperatures provide a warm, tropical climate that remains characteristic of the islands throughout the year.

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• São Tomé - December »
  January, November and December, with an average relative humidity of 85%, are the most humid months in São Tomé. With an average of 12h and 6min of daylight, December has the shortest days of the year in São Tomé, São Tomé and Príncipe.
• Neves - December »
  With an average of 12h and 6min of daylight, December has the shortest days of the year in Neves. In Neves the average relative humidity in December is 79%.
• Trindade - December »
  In Trindade during December, the rain falls for 28.6 days and regularly aggregates up to 159mm (6.26") of precipitation. In Trindade the average relative humidity in December is 79%.
• Santa Cruz - December »
  In Santa Cruz in December, during 28.6 rainfall days, 159mm (6.26") of precipitation is typically accumulated. In Santa Cruz during December, the rain falls for 28.6 days and regularly aggregates up to 159mm (6.26") of precipitation.
• Guadalupe - December »
  In Guadalupe in December, during 28.6 rainfall days, 159mm (6.26") of precipitation is typically accumulated. With an average of 12h and 6min of daylight, December has the shortest days of the year in Guadalupe, São Tomé and Príncipe.
• Santo Antonio - December »
  January through June, November and December, with an average of 4h of sunshine, are months with the most sunshine in Santo Antonio, São Tomé and Príncipe. In Santo Antonio in December, the average water temperature is 28°C (82.4°F).
• Monte Cafe - December »
  January, November and December, with an average of 12h and 6min of daylight, are months with the shortest days in Monte Cafe, São Tomé and Príncipe. January through May, October through December, with an average maximum UV index of 7, are months with the highest UV index in Monte Cafe, São Tomé and Príncipe.
• Ribeira Afonso - December »
  On the first day of December in Ribeira Afonso, São Tomé and Príncipe, sunrise is at 05:19 and sunset at 17:25. In Ribeira Afonso in December, it is raining for 28.6 days, with typically 159mm (6.26") of accumulated precipitation.
• Santa Luzia - December »
  December has the shortest days of the year in Santa Luzia, with an average of 12h and 6min of daylight. December has the shortest days of the year in Santa Luzia, with an average of 12h and 6min of daylight.
• Lemba - December »
  With its combination of warm days, significant but receding rainfall and ample sunshine, December in Lemba is poised to offer an uplifting holiday or season end experience. In Lemba, in December, during 28.6 rainfall days, 159mm (6.26") of precipitation is typically accumulated.
• Cantagalo - December »
  In Cantagalo in December, during 28.6 rainfall days, 159mm (6.26") of precipitation is typically accumulated. The months with the highest UV index in Cantagalo, São Tomé and Príncipe, are January through May, October through December, with an average maximum UV index of 7.