Puerto Princesa (Underground River) sää — huhtikuu

April is the height of the Philippine summer and regulars do not soften it: hot, hotter still in the humidity, with the sun almost directly overhead at midday. Our row reads 33.2C as 39C and a 25.6C night as 31C, with the sea at 30.1C, among the warmest anywhere in this dataset - there is no cooling off here. December to May is the dry season, and the 15.9 precipitation days in our row spread 89.2mm between them, so under six millimetres a day. The crowd point is domestic: April is the school and college summer holiday across the Philippines, so it is busier than February, and Holy Week in particular is the week to avoid. Intense thunderstorms arrive as summer breaks in late May. The record: humidity 79 percent, 11.1 hours of sun and AQI 45.

Forum posters describe August as squarely within rainy season for Palawan, with storms and occasional typhoons a real possibility, though Puerto Princesa specifically benefits from sitting on the island's western side, shielded by Luzon and the Visayas from most Pacific-originating typhoons. Posters are consistent that even during the rainy season, a downpour rarely lasts more than an hour or two rather than washing out a full day. Posters note popular non-diving activities - the Underground River, the Crocodile Farm, Iwahig Penal Colony and the Butterfly Garden - all remain available even when some dive operators and hotels scale back for the season. Posters generally describe Puerto Princesa's rainfall as comparable to Cebu's, notably drier than El Nido and Coron further north and closer to Luzon. Posters generally rate August as genuinely rain-prone but relatively typhoon-sheltered and manageable for Puerto Princesa, land-based tours a reliable fallback when the rain does come.

Forum posters call February a strong pick for Palawan generally: stable weather, lower humidity, cooler nights, and clearly cooler than the ramp-up to peak Filipino summer heat in March-April. It sits within the region's dry season (roughly November-April), with posters noting weather can still vary quite a bit by specific location even within that window, since parts of the province see wet-season patterns at different times of year than others. One scheduling upside specifically for February-March: it's before Holy Week in April, when Filipino domestic travelers flood Palawan and both crowds and hotel prices climb noticeably.