A common assumption about the Philippines is that the weather is same throughout the country. That is not the case. The Philippines is divided into four separate climatic zones.
Between the months of December and May, the country is entirely accessible, including its many beautiful islands and more remote areas. March to May is the hottest time of the year with temperatures frequently exceeding 40°C (104°F). It is widely considered as the Philippine summer, and the weather can be hot and humid. It’s best to travel during the cooler months of December to February, and you get to see how locals celebrate the holidays.
The wet season falls between June and October. The last thing you want to happen during your stay in Manila is a heavy downpour.
You’ll still enjoy hot, sunny days at this time, fewer crowds and lush, green scenery. The shoulder months of May and November can represent good value for money – you’ll miss the crowds, the weather’s still pleasant and flights will be cheaper than during the high season.
The weather can be unpredictable in the Philippines, travelers are advised to be backed up with umbrellas as it may start raining out of a sudden. Generally, the showers are mild and tolerable, so you might still give it a shot. But every now and then, a typhoon hits, which can cause flooding and worsen the traffic situation.
Keep an eye on sites like Typhoon2000.ph to make sure you’re not heading into the teeth of one, and, if you are, reroute.