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Săn mây in Da Lat: where to catch the sea of clouds and when you have a chance
Săn mây means hunting clouds. Get up at three, climb to a high point and meet sunrise above a sea of cloud lying in the valley below. It is a lottery: nobody forecasts this. But a cloud sea is made of measurable things, and we hold 12,995 days of records since 1991 — so we do calculate the odds.
The week ahead
09.08
Unlikely
dry ·
clear night ·
calm ·
humid
10.08
Unlikely
dry ·
clear night ·
calm ·
humid
11.08
Unlikely
dry ·
clear night ·
calm ·
humid
12.08
Unlikely
dry ·
clear night ·
calm ·
humid
13.08
Unlikely
dry ·
clear night ·
calm ·
humid
14.08
Unlikely
dry ·
clear night ·
calm ·
humid
15.08
Unlikely
dry ·
clear night ·
calm ·
humid
Struck through means it did not line up. Four of four is good conditions, three is a chance. Calculated per day rather than for the night alone.
Odds by month over 35 years
January
16% + 28%
February
8% + 42%
March
5% + 41%
April
5% + 29%
May
1% + 8%
June
0% + 4%
July
0% + 2%
August
0% + 2%
September
0% + 2%
October
1% + 6%
November
3% + 12%
December
6% + 16%
The dark part of the bar is the share of days when all four conditions lined up, the light part when three of four did. Da Lat weather station, from 1991.
Hon Bo peak
Lam Vien (old Ward 12), 9 km north-east of the centre
The main cloud-hunting spot near Da Lat: 1,709 metres, with the cloud sea settling into the valley right below the summit. Twenty to twenty-five minutes from town by bike, then a 20–30 minute walk — short, but in the dark and on dirt.
Worth knowing. Leave at 4:15–4:40 or sunrise catches you on the way up. Route: from Xuan Huong lake past the station, along Huynh Tan Phat through the Thai Phien flower village to the Hon Bo campsite. It is 10–15 °C at the top before dawn — bring a jacket. Entry is free, a rented bike costs 120,000–150,000 ₫, a guided tour 450,000–600,000 ₫. The map pin is the summit itself from elevation data; the campsite and parking are lower.
Langbiang Mountain
12 km north, 30 min
50k₫
entry · jeep 100–120k
The mountain the city looks at. Radar Peak is a 2.5 km trail, an hour and a half up; the true summit at 2,167 m is a 7 km, 4–5 hour commitment.
Cau Dat Tea Farm
20–25 km southeast, 40–50 min
A 1920s French tea estate at 1,650 m, with wind turbines standing over the rows. This is the best public spot in Vietnam for san may — cloud hunting.
Worth knowing. Cloud-hunting tours arrive 04:30–05:30 and the clouds burn off by about 07:00. The viral wooden sky-bridge has been closed after overcrowding damage — the hills themselves are still open and free. This is where people hunt the sea of clouds: monthly odds and a week ahead are on the cloud hunting page.
Where people hunt
- The Cau Dat tea hills, 25 km out — the easiest point: tarmac all the way up, and the cloud settles into the valley right below the tea rows. The one spot a first-timer on a bike will reach.
- Hon Bo — higher and wilder, the last kilometres are dirt. For those who have ridden in the dark before.
- Lang Biang — the peak above town, 2.5 km of trail to Radar Point. Start climbing by four, or sunrise catches you halfway.
How it works
A sea of cloud is radiation fog. Through a clear, still night the ground gives its heat to the sky, air at the surface cools to the dew point, and dense fog settles in the valleys. Higher up, at fifteen hundred metres, the sky stays clear — you stand above the cloud and look down on it. That is why four things must line up at once: a dry night, clear sky, light wind and enough moisture.
What to bring
- Warm clothes: at four in the morning Cau Dat can be 8–10 °C, and the wind makes it feel like zero.
- A torch: there is no lighting on the plantation and you will be finding the spot in the dark.
- Leave an hour and a half before sunrise — an hour of road plus time to find your place.
- A flask: nobody sells coffee at the top, the nearest café opens around seven.
This is an estimate of conditions, not a guarantee. We calculate from the city weather station, while a cloud sea also depends on what happens in one particular valley — and nobody measures that. Even in the best month half the trips end with nothing: that is part of the thing.