Koh Phangan Sunset Times, Month by Month, and Where to Watch

The short answer

On Koh Phangan the sun sets between about 17:55 and 18:45, depending on the month, and it is properly dark roughly three quarters of an hour later. That is a much smaller swing than most visitors expect, and the earliest sunsets are not in December — they are in the middle of November.

Here are the times and the compass direction of the setting sun, calculated for the island's own latitude and longitude on the 15th of each month. Treat them as accurate to a minute or two.

| Month | Sunset | Direction | |---|---|---| | January | 18:18 | 249° WSW | | February | 18:29 | 257° WSW | | March | 18:31 | 268° W | | April | 18:30 | 280° W | | May | 18:33 | 289° WNW | | June | 18:41 | 294° WNW | | July | 18:45 | 292° WNW | | August | 18:38 | 284° W | | September | 18:21 | 273° W | | October | 18:03 | 262° W | | November | 17:55 | 251° WSW | | December | 18:02 | 247° WSW |

The earliest sunset of the year falls around 16 November, at about 17:54. The latest is around 13 July, at 18:45. Day length barely moves: 11 hours 34 minutes at the December solstice, 12 hours 41 minutes in June. There is no long northern-European evening here, ever.

Which way is west, actually

This matters more than the clock, because it decides what the sun goes down into.

Over the year the setting point swings 48 degrees along the horizon — from west-south-west around Christmas to west-north-west at midsummer. From the west coast of Koh Phangan, the Ang Thong islands sit in the bearing range of roughly 250° to 262°, between 30 and 40 km offshore. So from about mid-October to mid-November, and again from late January through February, the sun drops into or just beside that broken line of limestone. Around the December solstice it sets a little to their left, over open water. From late March to September it sets well north of them, into an empty horizon.

Koh Samui, which everyone assumes is part of the picture, lies almost due south — about 190° from the west coast beaches. The sun never goes down behind it. What Samui does give you is a wall of lights after dark, low on the southern horizon, which is a different and quieter pleasure.

Which months give you a sky

January to March is the dependable stretch: dry, clear, the sun visible all the way to the waterline most evenings. It is also the busiest time on the west coast.

April and May are the hottest months and often the flattest light. The air holds haze, the sun turns orange and fades out a degree or two above the sea rather than meeting it, and the whole thing can be over by 18:25 without ever producing a colour.

June to September is better than its reputation. The Gulf stays comparatively dry while the Andaman coast gets soaked, sunsets are late by local standards, and squalls pass through rather than settle in.

October to December is the island's wet season, and it produces both the best and the worst evenings of the year. You will lose a good number of sunsets entirely to grey afternoon cloud. The ones you don't lose — broken cloud, rain falling somewhere out over Ang Thong, light coming up from underneath — are the ones people remember. If you are here in November, do not plan a single sunset outing; plan five and accept that two will work.

Where to stand

Anywhere on the west coast will do. The differences are about crowds and getting home.

Hin Kong. Shallow, mangrove-backed, a low-tide sandbar, a handful of unfussy beach bars. About ten minutes from Thong Sala and the quietest of the easy options.
Zen Beach (Ao Niad), Srithanu. Roughly 5.5 km north of Thong Sala. Free, west-facing, and the site of a drum circle every Friday at sunset. Go on a Friday for the scene; go on a Tuesday if you want the beach.
Haad Yao and Haad Salad. The best combination of sunset and a swim, though whether you can swim at all depends on the tide, which on this coast can leave you walking out a long way. Worth checking the day's tide table before you commit.
The hill above Wok Tum. Amsterdam Bar has the highest easy view on the west side. It is popular, the access road is steep, and the parking at dusk is its own small drama.
Mae Haad, in the north-west. Open water to the west, the islet of Koh Ma off to one side rather than in the frame. Longer ride, fewer people.

If you are staying on the east coast — Thong Nai Pan, Haad Rin, Than Sadet — a sunset trip means a 30 to 45 minute cross-island ride each way, the return leg in the dark on roads with serious gradients. Do it once, deliberately, not on a whim at five o'clock.

The twenty minutes afterwards

This is the part that catches people out. Near the equator, twilight is short and there is no lingering dusk. From the moment the disc disappears you have about 21 to 23 minutes of usable light, and perhaps 25 minutes more before it is genuinely dark.

The best colour usually arrives five to fifteen minutes after sunset, which means the correct move is to stay a little longer than feels natural and then leave decisively. Island roads have almost no street lighting, dogs sleep on the warm tarmac, and in the rainy season the surface stays greasy for an hour after a shower. Our other notes on scooters, dogs and night riding are in the journal.

From the terrace

Villa Ullassa faces west from a hilltop above Maduawan, with the whole arc from Baan Tai round to Hin Kong in view and the Ang Thong islands on the horizon. That means the sunset is something you walk ten steps for rather than ride twenty minutes for — and, more usefully, that you are already home for the twenty minutes afterwards, when the sky does its real work.