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Climate - Sao Tomé And Principe


Average weather, temperature, rainfall, sunshine

Flag - Sao Tomé And Principe

Map - Sao Tomé And Principe

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On the islands of São Tomé and Príncipe, located in the Gulf of Guinea and near the Equator, the climate is tropical, hot and humid throughout the year, with maximum temperatures around 30 °C (86 °F) from January to April and slightly lower from June to August. Both islands are covered with impenetrable forests, and in inland areas, there are hills wrapped in mist.
Here are the average temperatures of São Tomé, the capital.
Sao Tomé - Average temperatures
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January222925.9728578.6
February223026.2728679.2
March233026.4738679.5
April233026.4738679.4
May232926738578.7
June212824.7718276.5
July202723.8698174.9
August202824.1698275.4
September212925708376.9
October222925.2718477.4
November222925.5728477.9
December222925.6728478.1
Year21.828.925.3571.384.177.5

Rainfall is abundant on the island of Príncipe, around 2,000 millimeters (79 inches) per year in the main town of Santo António. In the southern part of the island of São Tomé, rainfall is even more abundant, in fact, 5,000 mm (195 in) of rain fall per year on the south-facing slopes. On the contrary, precipitation is scarcer in the northern part of the island, where the capital is located. This is due to the fact that the capital is located in the "rain shadow" of the prevailing south-western currents, which deposit much of the moisture as rainfall over the southern slopes of Pico de São Tomé, the highest mountain in the country with its 2,024 meters (6,640 feet). However, both because of high humidity and the constant presence of clouds, the vegetation is lush even in São Tomé. In São Tomé, about 900 mm (35 in) of rain fall per year.
Here is the average precipitation in São Tomé.
Sao Tomé - Average precipitation
MonthMillimetersInchesDays
January803.16
February853.38
March1305.19
April1204.710
May1154.58
June190.72
July000
August100
September170.73
October1104.39
November1003.99
December1104.37
Year88534.971

On both islands, there is a dry season, a little shorter in Príncipe (mid-June to mid-September) and longer in São Tomé (June to September), but even in these months, the sky is often cloudy. On the contrary, owing to the two zenith passages of the sun, the rainiest period are April-May and October-November.
Here are the sunshine hours in São Tomé.
Sao Tomé - Sunshine hours
MonthAverageTotal
January4.5145
February5135
March4.5140
April4125
May4.5145
June5.5165
July5160
August5150
September4120
October3.5115
November4.5135
December4.5145
Year4.61675

São Tomé

The temperature of the sea is high enough for swimming all year round; in São Tomé, it reaches a minimum of 26 °C (79 °F) from June to September.
Sao Tomé - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January2882
February2984
March2984
April2984
May2882
June2679
July2679
August2679
September2679
October2781
November2781
December2882
Year27.481.4


When to go and what to pack in Sao Tomé and Principe

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