Doi Inthanon
The highest ground in Thailand, where the forest turns to moss and cloud and you need a coat an hour before sunrise.
Where
Chiang Mai
Best time
November to February, when the summit air is coldest and the skies clearest.
Doi Inthanon tops out at 2,565 metres, and the last of the climb feels less like Thailand than like somewhere several hundred miles further north. The heat goes out of the air at about the halfway mark. Above two thousand metres the forest becomes cloud forest: trunks furred with moss, tree ferns, epiphytes hanging in the mist, and a sphagnum bog on the summit shoulder that has no business being at this latitude.
The summit itself is wooded and gives no view, which surprises people. What it gives instead is the boardwalk through that forest, a small stupa holding the ashes of the last king of Chiang Mai, and cold. The views come from the ridge trails and from the twin royal chedis on the shoulder below.
Below the cloud line the mountain is farmed and inhabited, and that is half of what makes the day worth taking slowly.
A forest that does not belong at this latitude
The Ang Ka boardwalk near the summit runs a few hundred metres through the highest cloud forest in the country, over a peat bog that stays saturated year-round. Everything is soft: moss to the depth of a hand, lichen beards, ferns growing out of other ferns. Birds that exist nowhere else in Thailand come to this altitude, which is why you will meet quiet people with long lenses at first light and nobody else.
The temperature at dawn regularly drops to single figures and occasionally to freezing, with frost on the grass. Thai visitors come specifically for that; it is one of the few places in the Kingdom where you can be genuinely cold. Bring a proper layer, not an optimistic one.
The two chedis on the shoulder
Below the summit stand a pair of chedis raised for the sixtieth birthdays of the late King and of the Queen, one clad in warm brown stone and one in lavender-grey, each with a Buddha image inside and terraced gardens falling away from the base. They are modern, and they are the best-sited modern religious architecture in the north: built to sit on a ridge with the whole range behind them, so the view is composed rather than merely wide.
In the cool months the gardens are in flower and the cloud sits below the terraces rather than above them. Go early enough and you will have the walkway between the two to yourself for a while.
Karen and Hmong ground, and what grows on it
The mountain is not empty. Karen and Hmong communities farm its slopes, and much of what they grow there now — arabica coffee, strawberries, cool-climate vegetables, cut flowers — exists because of royal project work begun decades ago to replace opium. The Mae Klang valley on the way down is terraced rice, and the terraces are at their greenest in the late rains and gold just before harvest.
We will take you into that landscape if you want it, on the clear understanding that a village is somebody home rather than an exhibit. Coffee drunk where it was grown, at a farm we have a long relationship with, is a more honest encounter than a scheduled stop.
How We Visit
Our way in
We start from Chiang Mai in the dark, roughly two hours to the upper mountain, so that we reach the top before the light and before the day-tour convoys. Your guide is a naturalist as much as a driver-escort, which is what the cloud forest actually requires. We carry warm layers for you rather than assuming you packed them. The descent is unhurried and goes through the Mae Klang valley — waterfalls, terraces, a coffee farm — rather than straight back down the highway, and we plan the return so you are not eating lunch in a car park.
Questions
What travellers ask
How cold does Doi Inthanon get?
Cold enough to need a coat. Dawn temperatures near the summit routinely fall into single figures Celsius in the cool season, and frost on the summit grass is a regular occurrence in December and January. It is the highest point in Thailand at 2,565 metres, and the air at the top is around ten to fifteen degrees cooler than Chiang Mai. Pack a real layer, gloves included if you feel the cold.
Can you see the sunrise from the summit of Doi Inthanon?
Not from the summit itself, which is enclosed cloud forest with no outlook. The views come from the ridge trails and from the twin royal chedis on the shoulder below, where the cloud usually sits beneath you at first light. The Kew Mae Pan ridge trail, open in the cool and dry months and closed during the rains, gives the finest of them and requires a local guide.
Can you visit an elephant sanctuary on the same trip?
Yes, and we only work with observation-only sanctuaries. No riding, no bathing shows, no performances, no chains and no bullhooks. You watch elephants behave as elephants at a distance they choose, which is less photogenic and considerably more interesting. Several such places sit within a couple of hours of Chiang Mai and pair naturally with a mountain day, though we would not attempt both in one morning.
Journeys That Include This
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It sits inside a journey we already run, and it fits just as easily into one written from scratch around your dates.
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