Main image

From an original watercolor by Joseph Corry, 1805 CC BY-SA 4.0 Wikimedia Commons

Bunce Island

Island

An island in the Sierra Leone River with ruins of an 18th‑century British slave‑trading fort; visitors study the archaeology and the transatlantic slave trade on guided tours from Freetown.

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Bunce Island essentials

Address: Bunce Island, Sierra Leone River estuary, near Freetown

About Bunce Island

Bunce Island is an island in the Sierra Leone River estuary that contains the ruins of a British slave fort and trading complex dating to the 17th and 18th centuries. It was an important site in the transatlantic slave trade.

The site was developed by British trading interests from the late 1600s and expanded through the 18th century as part of the Atlantic slave trade network. Operations declined after the British abolition of the slave trade and the island was abandoned; the remaining structures now stand in ruin.

Situated in the estuary of the Sierra Leone River upstream from the city of Freetown, the island sits within the broader river and coastal landscape and is accessed by small boat.

  • Historical significance: Built as a fortified trading post by British interests in the late 17th and 18th centuries, it was a major embarkation point in the Atlantic slave trade to the Americas.
  • Access: Access is by boat from the Sierra Leone coast; visits are generally short and require a local guide or boat operator familiar with the estuary.

What to See#

  • Castle ruins: Ruined fortifications, walls and foundations of the British-built slave castle and associated structures remain on the island and can be seen at low tide exposures and from boats.
When to Go

Best Time to Visit Bunce Island

Go in the dry season (November-April) when boat crossings from Freetown are most reliable and on-site visits are more comfortable.

Dry season (best time)
November-April · 24-30°C (coastal)
Drier weather and calmer sea conditions make the historic site easier to reach by boat and more pleasant to explore.
Wet season
May-October · 24-29°C
Heavy rains and rougher waters can interrupt boat services; site visits may be damp and muddy.

Weather & Climate near Bunce Island

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 22°C to 32°C. Heavy rainfall (2903 mm/year), wettest in August with a pronounced dry season.

Air Quality: AQI 80 Moderate
Best Time to Visit
FebruaryJanuaryDecember
Temperature & Rainfall
Temperature Range
37°
Warmest Month
16°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Ideal 22° - 31° 27° 4 mm mostly sunny 76% 2.5 m/s 1.7 very high 11.6h
February Ideal 23° - 31° 27° 5 mm mostly sunny 78% 3.2 m/s 2.0 extreme 11.7h
March Excellent 23° - 32° 31° 13 mm some cloud 76% 3.5 m/s 2.2 extreme 12.0h
April Very Good 24° - 32° 31° 49 mm partly cloudy 76% 4.0 m/s 2.2 extreme 12.2h
May Good 24° - 31° 31° 180 mm partly cloudy 81% 3.3 m/s 2.1 extreme 12.4h
June Good 23° - 30° 26° 336 mm overcast 87% 2.9 m/s 1.7 very high 12.5h
July Good 22° - 28° 25° 650 mm overcast 89% 2.5 m/s 1.6 very high 12.4h
August Good 23° - 28° 25° 742 mm overcast 90% 2.5 m/s 1.7 very high 12.3h
September Good 23° - 29° 26° 487 mm overcast 90% 2.5 m/s 1.9 very high 12.1h
October Good 23° - 30° 26° 300 mm partly cloudy 89% 2.5 m/s 2.0 very high 11.8h
November Very Good 23° - 31° 27° 116 mm partly cloudy 85% 2.4 m/s 1.8 very high 11.6h
December Ideal 23° - 30° 26° 21 mm some cloud 78% 2.2 m/s 1.7 very high 11.5h
Getting There & Around

How to Get to Bunce Island

Bunce Island is accessible only by boat from Freetown. Day trips and private motorboats depart the Freetown waterfront/jetty area and cross the Sierra Leone River to the island; once ashore there is a short walk around the ruined site. Arrange transport from Freetown’s docks (taxi to the jetty) to join a guided boat trip.

Tips for Visiting Bunce Island

  • Visit Bunce Island as part of an organized tour from Freetown so you arrive by a knowledgeable boat operator and guide who can interpret the fort's history; independent landings are logistically more difficult.
  • Plan the trip for the morning to take advantage of calmer seas and to ensure time to explore the ruins before any afternoon wind or chop makes the return crossing uncomfortable.
  • Check with your tour operator about tide and landing conditions and be prepared for the possibility of last‑minute cancellations in bad weather - confirm transport the day before.