When To Go · Destination Guide
Subic Bay Philippines
Wreck dives, weekend logistics, and a surprisingly fun topside base on Luzon's west coast
Updated Feb 13, 2026 • 19 sources
When To Go
Season planner for Subic Bay
Subic Bay is diveable year-round, but conditions shift with the Philippines' two main seasons. The dry season (roughly December to May) generally brings more stable weather and is the easiest window for planning wreck trips and Grande Island add-ons. The rainy season (roughly June to November) overlaps with the southwest monsoon and higher typhoon risk on Luzon, so expect more trip cancellations and more variable visibility. Inside the bay, the water stays warm around 27°C to 30°C, and operators can often find a protected site even when open coasts are rough. For snorkeling and small-boat island trips, aim for the calmer months and earlier mornings.
At A Glance Heatmap
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Topside |
Activity Drilldowns
OverallNov-Apr·Crowd:Moderate·Cost:Value
Ideal: Drier season conditions and more predictable mornings; easier planning for boats and road trips.
Plan Carefully: Rainier season and southwest monsoon influence on western Luzon; more wind (often 15.0 kph to 25.0 kph) and higher cancellation risk.
Subic's protected bay can still deliver dive days in the rainy season, but keep your itinerary flexible for typhoons and plan Grande Island trips only when the forecast is calm.
ScubaDec-Apr·Crowd:Moderate·Cost:Value
Ideal: More stable weather for wreck itineraries and better odds of clearer water; water often 27°C to 29°C.
Plan Carefully: Rainy season and storm risk. Operators may shift to the most protected sites inside the bay and reduce deep dive days.
If your priority is deep wrecks and multiday technical training, schedule the core of your trip in the dry season so weather disruptions are less likely.
FreediveDec-Apr·Crowd:Low·Cost:Value
Ideal: Calmer mornings are more common, making it easier to run safe buoy-and-buddy systems and boat-supported sessions.
Plan Carefully: More wind, rain, and reduced visibility. Prioritize pool work or sheltered shore sessions and cancel if boat traffic or conditions are unsafe.
Subic is an active bay.
SnorkelDec-Apr·Crowd:Moderate·Cost:Value
Ideal: Calmer sea state for island day trips and beach snorkeling. Aim for morning sessions for the smoothest surface.
Plan Carefully: Higher chance of choppy water and reduced visibility. Consider topside attractions as your main plan and snorkel only in protected areas.
If you are traveling with kids or firsttime snorkelers, schedule your snorkel day early in the trip so you can move it if conditions are not safe.
TopsideDec-Feb·Crowd:High·Cost:Moderate
Ideal: Cooler, drier weather for forest trails, cycling, and long outdoor days.
Plan Carefully: Rainier months. Plan indoor options and expect some tours (especially mountain trips) to pause or reroute after heavy rain.
For big day trips like Mt.
Seasonal Callouts Timeline
Macro life on wrecks
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecEven when visibility is average, wrecks can be great for close-focus photography. Look for nudibranchs, shrimp, and small reef fish using the wreck as structure.
Subic International Marathon
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecAn annual running event in the Freeport zone that can affect road traffic and hotel availability on race weekend.
Subic sailing regatta season
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecSailing events are commonly hosted in Subic Bay. Expect more water activity near marinas during regatta weekends.
Asia Triathlon Cup Subic Bay window
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecTriathlon events bring extra visitors and road closures around race routes. Plan dive logistics and transfers with extra buffer time.