Best time to visit Ko Pha-Ngan

The best time to visit Ko Pha-Ngan is during January and February.

However, anytime during the dry season from mid-December through to early-March is good, with daytime temperatures averaging 28°C (82°F).


Ko Pha-Ngan weather

Ko Pha-Ngan is a year-round destination, with a hot tropical climate and a short dry season.

Rain falls throughout the year in Ko Pha-Ngan, usually in late afternoon or early evening. The drier season lasts from mid-December into April.


Which is the hottest month in Ko Pha-Ngan?
May is the hottest month in Ko Pha-Ngan with an average maximum high of 33°C (91°F), with high heat and humidity, and a night-time low of 28°C (82°F).

The hot season in Ko Pha-Ngan lasts from April to early-July, with an average daily high temperature above 32°C (89°F).

Which is the coolest month in Ko Pha-Ngan?
The coldest month of the year in Ko Pha-Ngan is December, with an average low of 26°C (78°F) and high of 30°C (86°F).

The cool season lasts from November through January, with an average daily high temperature below 30°C (86°F).

When is it sunniest in Ko Pha-Ngan?
The sunniest time of year in Ko Pha-Ngan is normally February with nine hours of bright sunshine every day – that's on average 78% of daylight hours.

Which month has the most rain in Ko Pha-Ngan?
November is the wettest month in Ko Pha-Ngan with an average rainfall of 315mm. There are usually 18 days in November with some rain.

The wet season typically lasts from May to mid-December, with a greater than 37% chance of a given day being a wet day. During this time you can expect frequent but brief heavy downpours interspersed with sunny skies. October and November receive the most rainfall.

When is the sea warmest in Ko Pha-Ngan?
The sea is usually at its warmest in Ko Pha-Ngan in May when the water temperature reaches 30°C (86°F).

Which is the windiest month in Ko Pha-Ngan?
The windiest month of the year in Ko Pha-Ngan is December, with an average hourly wind speed of 19 kilometres per hour (10 knots).

The windy part of the year lasts from November through January, with average wind speeds of more than 15 kilometres per hour (8 knots).

The less-windy time of year lasts from February through December. The calmest month of the year in Ko Pha-Ngan is April, with an average hourly wind speed of 12 kilometres per hour (6 knots).

The predominant average hourly wind direction varies throughout the year in Ko Pha-Ngan.

October to January also brings strong winds that can make the east side of Ko Pha-Ngan rough for swimming, while the island's west side is often buffeted by summer monsoons during July and August.


Ko Pha-Ngan – Monthly Weather

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average daily max temp (°C)
30 31 32 32 33 32 32 32 32 31 30 30
Average daily min temp (°C)
26 26 27 27 28 28 27 27 27 26 26 26
Average daily sunshine (hrs)
7 9 8 8 6 6 6 6 6 6 6 6
Comfort level
High heat & humidity icon High heat & humidity icon Very high heat & humidity icon Very high heat & humidity icon Very high heat & humidity icon Very high heat & humidity icon Very high heat & humidity icon Very high heat & humidity icon Very high heat & humidity icon High heat & humidity icon High heat & humidity icon High heat & humidity icon
Average relative humidity (%)
72 71 73 75 80 82 82 82 84 85 81 76
Average UV Index
11 11+ 11+ 11+ 11+ 11+ 11+ 11+ 11+ 11+ 11 10
Days with some rainfall
6 3 4 7 16 15 15 15 17 19 18 11
Average rainfall (mm)
60 37 57 74 125 124 118 116 146 227 315 174
Average wind speed (km/h)
16 15 13 12 13 17 18 19 16 14 18 19
Average daily sea temp (°C)
28 29 29 30 30 30 30 29 29 29 29 29
Ko Pha-Ngan, Thailand

Holiday seasons

High season: November to April.

Low season: May to October brings less crowds, cheaper accommodation and, as the locals are quick to point out, it does not rain all day.


Note: Meteorological data is sourced from the United States National Oceanic and Atmospheric Administration (NOAA) and the World Meteorological Organization (WMO), with additional historical climate data sourced from the Thai Meteorological Service.


More about Ko Pha-Ngan…



Latest update: Best time to visit Ko Pha-Ngan: 9 June, 2022



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