SeasonMapKo Pha Ngan (Koh Phangan) weather in January
Thailand
January in Ko Pha Ngan: hot, rainy, with muggy air — an excellent time to visit.
#3 of 12 months in Ko Pha Ngan · #355 of 1383 destinations to visit in January · comfort 84/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Ko Pha Ngan in January
Other months in Ko Pha Ngan
Ko Pha Ngan's forum puts March close to the neighbouring months either side — regulars comparing February and April describe similar humidity with only a degree or two of difference, which puts March comfortably in the middle. Expect warm, humid days typical of the island's dry-ish season, with the occasional shower rather than sustained rain.
Add your own note from Ko Pha Ngan's card on the map.
Ko Pha Ngan climate normals — January
| Daytime high | 28°C / 82°F | 🥵 hot |
|---|---|---|
| Nighttime low | 25°C / 78°F | |
| Feels like (high) | 32°C / 90°F | |
| Sea temperature | 28°C / 82°F | 😎 warm sea |
| Rainfall | 100 mm / 3.9 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 11.6 h | |
| Wind | 23 km/h / 14 mph | |
| Air quality (US AQI) | 62 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Ko Pha Ngan in January
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.
Peak crowdsFull Moon Party, Gulf dry season, school holidays in 6 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Ko Pha Ngan'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).
Best weatherKo Pha Ngan's weather peaks January–March.
January includes Full Moon Party.
Best weatherFair weatherToughest weather
What's on in Ko Pha Ngan in January
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Full Moon Party
1 Jan – 31 DecMajor festivalCrowdedBook earlyHaad Rin fills once a lunar month, every month, and the island's boats and rooms price around it. Arrive two days either side and it is a different, much quieter island. Source ↗
- Season
Gulf dry season
15 Jan – 31 Aug · usuallyCrowdedThe Gulf runs on its own calendar: the driest, calmest stretch here is the first half of the year, while the Andaman coast is in its monsoon. Boats from Surat Thani run to schedule.
- Holiday
Christmas and New Year peak
18 Dec – 5 JanChristmas & New YearCrowdedBook earlyThe busiest and dearest fortnight on the island, and it lands in the middle of the wet season. Boats are added, rooms triple, and the new-year party is the biggest of the year. Source ↗
Nearby, and something's on
Within 300 km of Ko Pha Ngan — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Ko Pha Ngan?
Ko Pha Ngan in January — FAQ
- Is January a good time to visit Ko Pha Ngan?
- January in Ko Pha Ngan: hot, rainy, with muggy air — an excellent time to visit. It ranks #3 of 12 months for Ko Pha Ngan on SeasonMap's comfort score (84/100).
- What is the weather like in Ko Pha Ngan in January?
- In January, Ko Pha Ngan averages a daily high of 28°C and a low of 25.3°C, with about 99.5 mm of rain over roughly 8.8 rainy days.
- What is the air quality in Ko Pha Ngan in January?
- Ko Pha Ngan has a mean US Air Quality Index of about 62 in January.
Other months in Ko Pha Ngan
Compare Ko Pha Ngan in January
Warmer or cooler than Ko Pha Ngan in January
Similar destinations in Southeast Asia — January
Within 300 km: Khao Sok's Rafflesia in bloom around 1 Jan – 15 Mar, and Ko Samui's Gulf dry season around 15 Jan – 31 Aug.