Treasury Islands
Islands Group of islands notable for WWII battles and reefs
The Treasury Islands, a small Solomon Islands group, include Mono and Stirling; divers, WWII history visitors, and fishermen come for coral reefs, shipwrecks, and wartime relics.
The Treasury Islands are a small group in the Western Province of the Solomon Islands, dominated by the islands of Mono and Stirling. They are known for their World War II history and coral-fringed shores.
Visitors see coastal villages on Mono, wartime relics and remnants of an airstrip on Stirling, and coral reefs suitable for snorkeling and diving. The islands are small, remote and primarily accessed by regional boat services.
The Treasury Islands were the scene of military operations during the Solomon Islands campaign of World War II and were developed by Allied forces for naval and air operations, leaving visible wartime infrastructure and wrecks.
The group lies in the western part of the Solomon Islands nation, to the northwest of Guadalcanal and near Bougainville, within the island-strewn waters of the southwest Pacific.
- WWII heritage: The islands preserve World War II sites and relics from the 1943 Allied campaign in the Solomons, making them of interest to military-history visitors and wreck divers.
What to See #
- Mono Island: Mono is the largest inhabited island in the group and served as the main local community and supply point.
- Stirling Island: Stirling Island is a low, flat island that was developed as a naval and airbase during World War II and still contains remnants from that period.
Tips for Visiting Treasury Islands #
- Plan travel for the Solomon Islands dry season (roughly May-October) when sea conditions are calmer for small boat transfers and diving around Treasury Islands' wartime wreck sites.
- Confirm and arrange boat transfers and any local accommodation well in advance with operators in Gizo or Honiara-the islands have very limited facilities and depend on charter boats and local schedules.
- If you're looking for WWII history or dive sites, coordinate with a local dive operator or guide on the ground who knows the exact wreck locations and landing spots on Mono and nearby islets.
Best Time to Visit Treasury Islands #
The best time to visit the Treasury Islands is in the drier months (May-October) when weather is sunnier and sea conditions are typically calmer.
Weather & Climate near Treasury Islands #
Treasury Islands's climate is classified as Tropical Rainforest - Tropical Rainforest climate with consistently warm temperatures year-round. Temperatures range from 22°C to 30°C. Heavy rainfall (3823 mm/year), wettest in July.
January
January is the warmest month with highs of 30°C and lows of 23°C. Heavy rain (330 mm).
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February
February is the warmest month with highs of 30°C and lows of 23°C. Heavy rain (282 mm).
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March
March is warm with highs of 30°C and lows of 23°C. Heavy rain (364 mm).
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April
April is warm with highs of 29°C and lows of 23°C. Heavy rain (288 mm).
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May
May is warm with highs of 29°C and lows of 23°C. Heavy rain (264 mm).
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June
June is warm with highs of 29°C and lows of 23°C. Heavy rain (320 mm).
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July
July is warm with highs of 28°C and lows of 22°C. The wettest month with heavy rain (461 mm).
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August
August is warm with highs of 28°C and lows of 22°C. Heavy rain (347 mm).
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September
September is warm with highs of 29°C and lows of 23°C. Heavy rain (332 mm).
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October
October is warm with highs of 29°C and lows of 23°C. Heavy rain (304 mm).
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November
November is warm with highs of 30°C and lows of 23°C. Heavy rain (274 mm).
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December
December is the warmest month with highs of 30°C and lows of 23°C. Heavy rain (257 mm).
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