São Tomé in March

The dry season from June to September offers the most reliable weather, with temperatures hovering around 80°F and minimal rainfall. December and January work well too — still relatively dry but with more afternoon showers. Here's the reality: São Tomé sits on the equator, so it's always humid and temperatures barely fluctuate. The wet season from March to May brings daily downpours that can wash out roads and cancel boat trips to nearby islands. But even during dry months, pack rain gear. Afternoon thunderstorms are part of life here. October and November see the heaviest rains and roughest seas. If you're planning to hike in the interior or visit Ilhéu das Rolas, stick to the drier months when trails are more accessible.