Solomon Islands in May: Weather, Crowds & What to Expect

Honiara & Guadalcanal Coast

The first true relief from humid heat comes in May as the southeast trade winds strengthen and conditions dry noticeably across Guadalcanal. Morning air is crisper and mosquitoes are marginally fewer, making village hikes and coastal walks more pleasant; sea crossings can be rough on exposed coasts, though sheltered bays around Honiara remain navigable. If you’re timing travel, May-August is the most reliable window for inter-island boat services out of the capital.

Central Province (Florida Islands, Tulagi, Russell Islands)

With the arrival of the southeast trades in May, mornings across the central islands are noticeably fresher and drier, making boat hops and day-dives more dependable. Mariner crossings become choppier in the open channels, but inner lagoons remain reasonably sheltered - ideal for exploring wreck sites and coral gardens around Tulagi. Nights cool down relative to the wet season; insect nuisance declines slightly and outdoor dining becomes easier.

Western Province (Gizo, New Georgia, Munda, Marovo Lagoon)

The strength of the southeast trade winds becomes apparent in May, ushering in drier and breezier weather across the Western Province and making island-hopping far more predictable. This is the high season for Marovo Lagoon, with calm water in protected channels and reliable diving conditions; book dives early as local capacity is limited. Nights are noticeably cooler, and fewer mosquitoes make camping or open-air dining more comfortable.

Malaita & Savo Coastal Areas

With the build-up of the southeast trades, May becomes noticeably drier and winds help reduce air humidity around Malaita and Savo, making walking and short boat hops much more comfortable. Rough seas on exposed stretches can still affect open-boat services, but inner bays and sheltered coves remain pleasant for snorkeling and canoeing. Travelers should pack a light windproof and rely on more predictable local transport.

Temotu & Santa Cruz Islands (Tikopia, Anuta, Vanikoro)

The onset of stronger southeast trade winds in May brings clearer conditions and lower humidity across the easternmost islands, and boat transfers become comparatively more reliable. Reef and lagoon snorkeling improves in clarity and the risk of storm-driven cancellations reduces - this is a sensible month for remote cruising. Nights are more comfortable and insects less bothersome, which helps with long village stays.

Rennell, Bellona & Makira-Ulawa (Southern islands)

May’s strengthening southeast trades deliver drier, breezier days across Rennell and Makira, and the air feels less oppressive after months of humidity. Sea conditions improve for coastal fishing and inter-island transfers, though exposed passages can still be lively; charter services resume more regular runs. Nights are cooler and insects are less of a nuisance, a convenient time for longer stays and inland exploring.