São Tomé and Príncipe in May: Weather, Crowds & What to Expect

Northern São Tomé (São Tomé city and northern coast)

By May the weather is still humid and wet most days, but showers can be a little less relentless than earlier in the year, offering longer spells of sunshine around midday. São Tomé city is humid and muggy; cafés shaded by mango trees are welcome refuges. Boat trips to nearby islets run, though captains remain cautious about sudden squalls-confirm timings the morning you travel. Nights remain warm; a light mosquito net or repellent is still advisable.

Central Highlands and Obô (Pico de São Tomé, Pico Cão Grande, forest interior)

May still brings frequent showers in the mountains, though breaks between rains begin to lengthen toward month’s end as the drier window approaches. Muddy tracks gradually firm up, making lower-elevation walks more enjoyable, while higher ridges can remain shrouded in cloud. Expect cooler nights-bring a warm sleeping layer if staying at simple mountain lodges. If you want dramatic waterfall flows without the heaviest mud, the early part of this month can be rewarding.

Southern São Tomé (southern coast, Ilhéu das Rolas and nearby islets)

May begins to edge toward drier conditions along the south, though showers remain frequent especially early in the month and after tropical squalls. Days can alternate between heavy cloud and golden afternoon light, making for striking coastal photography. Boat services stabilize toward the month’s end, so island visits become more feasible if you allow for a flexible schedule. A light fleece for evenings and waterproofs during sudden showers remain sensible.

Príncipe Island (Santo António, Sundy, Obo Reserve)

May signals the tail end of the wetter months, with rainfall still common but increasingly broken by longer dry spells as the drier season approaches. Trails in the Obo Reserve improve and coastal waters start clearing, making late-May a transitional time for both birding and snorkeling opportunities. Santo António’s markets resume steadier activity between rains; local transport becomes easier as roads firm up. Light layers and waterproofs remain sensible for this in-between month.