Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in São Tomé is from June, July, August. — consistent weather climate
🌧Rainy
| Score | 51 | 48 | 39 | 43 | 50 | 81 | 84 | 75 | 56 | 46 | 46 | 45 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy | Hot & dry | Pleasant | Humid | Rainy | Rainy | Hot & rainy | Hot & rainy |
| Temperature | 25–28°C | 25–29°C | 26–29°C | 26–29°C | 25–29°C | 24–28°C | 23–27°C | 23–27°C | 24–27°C | 24–27°C | 25–28°C | 25–28°C |
| Feels like | 30–35°C | 30–36°C | 31–36°C | 31–36°C | 30–35°C | 28–32°C | 27–31°C | 27–31°C | 28–32°C | 29–33°C | 29–34°C | 30–34°C |
| Precipitation | 228mm 26 days | 208mm 22 days | 247mm 24 days | 232mm 22 days | 222mm 25 days | 73mm 14 days | 58mm 15 days | 121mm 21 days | 235mm 29 days | 395mm 30 days | 338mm 30 days | 300mm 30 days |
| Sunshine | 7.8h ☀︎ 65% | 7.1h ☀︎ 59% | 5.9h ☀︎ 49% | 6.3h ☀︎ 52% | 6.4h ☀︎ 53% | 7.7h ☀︎ 64% | 7.1h ☀︎ 59% | 6.4h ☀︎ 52% | 6.0h ☀︎ 49% | 5.9h ☀︎ 49% | 6.6h ☀︎ 55% | 6.9h ☀︎ 57% |
| Wind | E · 12 km/h | SE · 12 km/h | SE · 13 km/h | SE · 13 km/h | SE · 13 km/h | SE · 14 km/h | SE · 13 km/h | SE · 12 km/h | E · 12 km/h | E · 12 km/h | SE · 13 km/h | E · 12 km/h |
| Humidity (%) | 87% | 86% | 86% | 86% | 86% | 84% | 83% | 84% | 86% | 88% | 88% | 88% |
| Day length | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h | 12.1h |
Carnaval brings colorful parades, music, and dancing to the streets of São Tomé in the days before Ash Wednesday, usuall…
Festas de São Tomé is the city's patron saint celebration in early July, with masses, a religious procession, and commun…
Travelers flock to São Tomé in February for a rain-soaked, sweltering street festival, entirely missing the cool, dry, blissful months of June through August when the island is at its absolute best and completely uncrowded.
São Tomé is one of Africa's oldest colonial capitals, founded in the late fifteenth century where equatorial volcanic jungle slides down into the Atlantic. Most visitors arrive treating the capital as a brief transit stop before scattering to remote cocoa plantations or southern beaches, but the city itself has a quiet, peeling Portuguese-creole charm wrapped around the curved waterfront of Baía de Ana Chaves. Yet almost everyone plans their arrival backward. The island's calendar is dictated by the tropical rain belt, and while flight manifests peak in February when the heat is thick enough to chew and tropical downpours are a daily certainty, the genuine golden season arrives mid-year under cool, sea-tempered skies with virtually nobody around to witness it.
Locals call the mid-year window the Gravana, and it is the closest an equatorial island ever gets to brisk. From June through August, the prevailing winds shift, the relentless humidity breaks, and the sky settles into a calm, filtered marine haze that keeps daytime temperatures remarkably mild. The stinging tropical downpours virtually vanish, replaced by weeks of dry pavement, gentle breezes off the Gulf of Guinea, and the best walking conditions of the year.
You can spend an entire afternoon wandering from the old ramparts of Forte de São Sebastião along the sea wall without seeking refuge from sudden deluges or sweating through your clothes within twenty minutes. The ocean breeze sweeps through the colonial avenues, rustling the palms along Baía de Ana Chaves and cooling the terracotta roofs. Early July brings the Festas de São Tomé, the feast day of the capital's patron saint, celebrated with quiet religious processions, neighborhood music, and open-air food stalls serving grilled fish without a hint of mass tourism.
Remarkably, global travelers treat these months as an afterthought. Visitor numbers hover near their annual lows, meaning you can hire a local boatman, explore the stone architecture around Praça da Independência, and travel down the coastal tracks in serene isolation. If you want São Tomé at its most forgiving and evocative, July is the unchallenged peak.
By late September, the winds reverse and the rains return with astonishing violence. October and November constitute the wettest stretch of the calendar, dumping extraordinary volumes of water on the volcanic peaks and sending muddy red torrents rushing down through the gutters toward the sea. The humidity returns overnight, coating every colonial plaster facade in slick moisture and awakening the island's mosses and ferns.
Travel here during this stretch demands patience and a high tolerance for canceled plans. When a tropical cell opens over the capital, walking is out of the question; the rain hits with such percussive force that roads turn into temporary creeks and the horizon over Baía de Ana Chaves disappears behind a slate-gray wall of water. The air registers as warm and stagnant, hovering around thirty degrees but feeling considerably heavier due to saturated air.
There is an undeniable cinematic beauty to the island during these months, as the lush rainforest canopy glistens emerald green and roaring waterfalls emerge from every ravine. However, if your trip relies on coastal rambling, exploring the city on foot, or navigating unpaved island tracks, October will test your endurance to its limits.
The first five months of the year wrap the capital in a heavy, unrelenting blanket of tropical heat. High temperatures rarely seem extreme on a thermometer, but the suffocating moisture off the equator pushes the real sensation well into the mid-thirties from morning until past dusk. Showers arrive in sudden, dense bursts that steam off the hot asphalt within minutes, doing nothing to clear the stifling air.
Yet February sits squarely at the top of the island's crowd calendar. Travelers converge on the capital in large numbers for Carnaval, which fills the streets before Ash Wednesday with elaborate costumes, brass horns, and Afro-island rhythms. For several days, the humid air vibrates with dance troupes moving through the historic center, blending old Portuguese traditions with distinctly island choreography and satire.
The energy of Carnaval is magnificent, but the weather is uncompromisingly difficult. You will dance in the rain, sweat through the evenings, and pay peak rates for transport and guides. Once the confetti washes into the bay, March and April slip back into quiet, sweltering tropical routine, with thick cloud cover and frequent downpours making extended walking around Forte de São Sebastião a dripping, exhausting ordeal. Unless you are traveling specifically to lose yourself in February's street parades, hold out for the dry breezes of the Gravana.