Things to Do in São Tomé and Príncipe in August
August weather, activities, events & insider tips
August Weather in São Tomé and Príncipe
Is August Right for You?
Advantages
- Gravana season brings calmer seas and excellent visibility for diving and snorkeling around Ilhéu das Rolas and Lagoa Azul - water clarity reaches 20-25 m (65-82 ft) during August, significantly better than the rainy months
- Humpback whales migrate through São Toméan waters from July through September, with August offering peak sighting opportunities on boat trips along the southern coast - success rates typically hit 70-80% in calm gravana conditions
- Chocolate harvest season is in full swing at the old roças (plantation estates), meaning fresh cacao processing demonstrations and the most aromatic tours at places like Roça São João dos Angolares - you'll actually see the fermentation boxes being turned daily
- August falls outside European summer peak (which hits in July), so you'll find better availability at guesthouses and pousadas, plus fewer crowds at Praia Jalé and Praia Piscina, though prices haven't dropped to true low-season rates yet
Considerations
- Gravana season means occasional strong winds that can cancel boat trips to Ilhéu das Rolas or limit access to certain beaches - operators typically cancel 2-3 days per month when swells exceed safe limits, so build flexibility into your itinerary
- The dry season also brings more intense sun exposure with minimal cloud cover - that UV index of 8 is no joke at the equator, and you'll burn in under 20 minutes without protection, which catches many first-timers off guard
- While August isn't peak pricing, it's not budget season either - accommodation rates sit about 15-20% higher than September through November, and international flights from Lisbon tend to stay elevated through the European summer travel window
Best Activities in August
Whale watching boat expeditions along the southern coast
August sits right in the sweet spot of humpback whale migration season, with calmer gravana seas making for comfortable boat trips and better spotting conditions. The whales pass through São Toméan waters heading south, often breaching and tail-slapping close enough for spectacular viewing. Early morning departures around 7-8am typically offer the best conditions before afternoon winds pick up. Tours usually last 3-4 hours and depart from Porto Alegre or São João dos Angolares.
Diving and snorkeling at Ilhéu das Rolas and Lagoa Azul
The gravana season brings the clearest water of the year - visibility reaches 20-25 m (65-82 ft) in August compared to 10-12 m (33-39 ft) during rainy months. Ilhéu das Rolas offers wall dives with frequent turtle sightings, while Lagoa Azul's protected bay is perfect for snorkelers and less experienced divers. Water temperature hovers around 26-27°C (79-81°F), comfortable without a wetsuit though many divers prefer a 3mm for longer dives. The occasional strong winds might cancel boat trips, so plan diving for your first few days rather than your last.
Cacao plantation tours at historic roças during harvest processing
August falls during the main cacao harvest and fermentation period, meaning you'll see the full chocolate-making process in action rather than just touring empty facilities. The old Portuguese plantation estates like Roça São João dos Angolares and Roça Agostinho Neto offer guided walks through cacao groves, demonstrations of pod opening, and the chance to observe fermentation boxes being turned - the aroma is incredible and you can't experience this intensity outside harvest season. Tours typically last 2-3 hours and include tastings of fresh cacao pulp and finished chocolate.
Hiking to Pico Cão Grande and Lagoa Amélia
August's drier weather makes mountain trails more manageable, though they're never truly dry in this rainforest climate. Pico Cão Grande, the dramatic 663 m (2,175 ft) volcanic plug, requires a 2-3 hour hike each way through dense jungle - trails are muddy but passable, and you'll avoid the worst leeches of rainy season. Lagoa Amélia sits at 1,400 m (4,593 ft) elevation and offers cooler temperatures around 18-20°C (64-68°F), a welcome break from coastal humidity. Both hikes require local guides who know current trail conditions.
Sea turtle nesting observation at Praia Jalé
August marks the beginning of sea turtle nesting season on São Tomé's southern beaches, particularly at Praia Jalé where conservation projects monitor four species including giant leatherbacks. While September and October see peak nesting activity, August offers early-season sightings with far fewer visitors - you might have entire beach sections to yourself. Evening patrols with conservation guides start around 8-9pm and can last several hours as you wait for turtles to emerge. The experience requires patience and respect for wildlife protocols, but watching a 300 kg (660 lb) leatherback dig her nest is genuinely unforgettable.
Exploring São Tomé town markets and colonial architecture
The capital's covered Mercado Municipal comes alive in August with seasonal produce including breadfruit, safou (African plums), and fresh fish hauled in daily by artisanal fishermen. Early morning visits between 7-9am offer the best selection and cooler temperatures before the day heats up. The surrounding colonial-era buildings - including the Presidential Palace, Cathedral, and old customs house - tell stories of Portuguese rule and recent independence. August's drier weather makes walking the hilly streets more pleasant than during rainy months, though you'll still want to tackle the steep climbs before midday heat.
August Events & Festivals
Feast of Nossa Senhora da Graça
This religious celebration on August 15th honors São Tomé's patron saint with processions, traditional music, and community gatherings primarily in São Tomé town. While it's a significant local observance, expect a quieter, more intimate celebration compared to major festivals in other months - this is genuinely about local faith rather than tourist spectacle. Churches hold special masses, and families gather for traditional meals featuring calulu (fish stew) and banana bread.