SeasonMapKo Phi Phi (Phi Phi) weather in May
Thailand
May in Ko Phi Phi: sweltering, soaked, with clean air — fine if you can take 25 rainy days.
#9 of 12 months in Ko Phi Phi · #1056 of 1383 destinations to visit in May · comfort 67/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Ko Phi Phi in May
Other months in Ko Phi Phi
Ko Phi Phi's forum calls February one of the driest, sunniest stretches of the year — regulars who visited in January reported blue skies and no rain, and expect February to run much the same. It's busier than the shoulder months of May and June, but regulars say it's a step down from the Christmas and New Year crush.
Add your own note from Ko Phi Phi's card on the map.
Ko Phi Phi climate normals — May
| Daytime high | 29°C / 84°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 27°C / 81°F | |
| Feels like (high) | 35°C / 95°F | |
| Sea temperature | 31°C / 88°F | ♨️ bath-warm |
| Rainfall | 263 mm / 10.4 in | ⛈ soaked |
| Rainy days | 25 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 9.5 h/day | |
| Daylight | 12.5 h | |
| Wind | 20 km/h / 13 mph | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Ko Phi Phi in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyLong summer break in Thailand, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Ko Phi Phi's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKo Phi Phi's weather peaks January–March, best around February.
Best weatherFair weatherToughest weather
What's on in Ko Phi Phi in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Southwest monsoon
15 May – 31 Oct · usuallyRiskSwell on the exposed side, occasional cancelled ferries, and a village running at maybe a third of its capacity. Rooms cost a fraction of what they do in January.
- Season
Wet season
MonsoonRisk25 rainy days and about 263 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Ko Phi Phi — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Ko Phi Phi?
Ko Phi Phi in May — FAQ
- Is May a good time to visit Ko Phi Phi?
- May in Ko Phi Phi: sweltering, soaked, with clean air — fine if you can take 25 rainy days. It ranks #9 of 12 months for Ko Phi Phi on SeasonMap's comfort score (67/100).
- What is the weather like in Ko Phi Phi in May?
- In May, Ko Phi Phi averages a daily high of 29.1°C and a low of 27°C, with about 263.2 mm of rain over roughly 25.4 rainy days.
- What is the air quality in Ko Phi Phi in May?
- Ko Phi Phi has a mean US Air Quality Index of about 36 in May.
Other months in Ko Phi Phi
Compare Ko Phi Phi in May
Warmer or cooler than Ko Phi Phi in May
Similar destinations in Southeast Asia — May
Within 300 km: Khao Lak's Manta and whale shark season around 1 Feb – 5 May, and Ko Tao's Whale shark season around 15 Mar – 31 May.