Ma Pi Leng Pass is at its clearest from late September to November and again from March to May. From May to September heavy rain brings cloud, landslides and a brown Nho Que River; from December to February fog often sits on the pass for hours and nights near the crest drop close to freezing.
The plateau towns average about 18 °C over the year, and summer days are warm rather than hot. In every month the morning is usually clearer than the afternoon. No month guarantees a view: on any day the canyon can fill with cloud.
A roof over your head on Ma Pi Leng
A private car and a mountain driver for the wet months, and a licensed local guide who re-plans the day around the weather.
★Ha Giang Loop by Private Car — 3 DaysThree days around the Ha Giang Loop in your own car, from Ha Giang city — Heaven Gate, Lung Cu, the Sky Path on Ma Pi Leng and a private boat on the Nho Que. · 3 days, 2 nightsSee the tour →Ha Giang Loop from Hanoi — 4 Days by Private CarDoor to door from Hanoi: four days on the Ha Giang Loop with your own car, a licensed local guide and a good hotel every night. · 4 days, 3 nightsSee the tour →Ma Pi Leng weather, month by month
The figures below are rounded averages for the plateau towns of Dong Van and Meo Vac. The crest of the pass, at around 1,500 m, runs a few degrees colder and is the first place to disappear into cloud.
| Month | Day / night | Rain | What the pass is like |
|---|---|---|---|
| January | about 15 / 7–10 °C | Light | Cold, often foggy, frost on clear nights |
| February | about 16–19 / 8–10 °C | Light | Fog lifting on some days; peach and plum blossom |
| March | about 21–23 / 11–14 °C | Showers | Mild, some haze, views opening up |
| April | about 23–25 / 15–16 °C | Showers | Clear spells; the river at its greenest |
| May | about 26 / 17–20 °C | Increasing | Warm; the first heavy storms |
| June | about 26–28 / 18–22 °C | Heavy | Cloud by midday, landslide delays |
| July | about 25–28 / 18–22 °C | Heavy | Wet most afternoons; boats may stop |
| August | about 26–28 / 17–22 °C | Heaviest | The wettest month; the river often brown |
| September | about 24–27 / 16–20 °C | Easing | Clearing, but late storms still hit |
| October | about 20–23 / 11–17 °C | Light | Clear, dry and busy; buckwheat from late in the month |
| November | about 20 / 13 °C | Light | Clear, cool; the festival month |
| December | about 15–16 / 7–9 °C | Light | Cold; fog returns; the odd frost |
The clearest months are September to November and March to May. May to September is the rainy season, with landslide risk on the passes; December to February brings fog on Ma Pi Leng and nights close to freezing.
Fog: when it comes and why
Winter fog on Ma Pi Leng is cloud, not mist. From December to February cold air from the north pushes a low, damp cloud layer over the plateau, and the pass sits right in it. On those days visibility on the road can drop to a few dozen metres and the canyon is simply not there. It can lift by late morning, hang all day, or come and go in minutes as the wind shifts.
Autumn and spring have a different kind: valley mist that forms in the canyon overnight and burns off as the sun reaches the water, often by mid-morning. That is the one fog worth waiting for, because the view appearing from under it is what most photographs of the pass are.
Frost and the occasional snow
The plateau is one of the few places in Vietnam where winter nights fall below 0 °C. Frost and rime ice appear in cold snaps, snow falls in some winters, and the record low, set in 1975, was below −5 °C.
Rain, landslides and the boat
The rainy season, roughly May to September, is when the pass is most at risk and least rewarding. Storms loosen rock above the road, and landslides close sections of Highway 4C for hours or a day. The same rain washes silt into the Nho Que, so the famous green lake turns brown.
It also stops the boats. On 30 September 2025, after typhoon No. 10, the Nho Que 1 reservoir took in more than 1,570 m³ of water a second, a landslide buried the road to the dock, and all tourist trips were suspended from 13:00. Our Nho Que River guide explains why the reservoir governs the boat. Nho Que boats run from 7:00 to 18:30 all year but stop after heavy rain or when the reservoir runs high. If the boat is off on your day, your guide swaps in the canyon viewpoints and a longer walk on the Sky Path. Landslides after heavy rain or a road closure can change the route on the day; your guide re-routes, with no partial refund. If the authorities close the loop or a natural disaster makes the tour impossible, you move the date free or get a 100% refund.
What the weather means on the road
Wet weather changes the pass more for riders than for passengers in a car. On a bike, rain on a cliff road means cold hands, poor grip on the hairpins and a visor full of water; in a car it means wipers and a slower driver. That difference is most of the case for a car in the rainy months, and our car, easy rider and motorbike comparison sets it out honestly.
| Conditions | Lookouts | Sky Path | Boat |
|---|---|---|---|
| Clear and dry | Full view of the canyon | Good; dew in the grass early | Runs |
| Morning mist in the canyon | Often lifts by mid-morning | Good once it clears | Runs |
| Winter cloud on the pass | Often nothing to see | Short section only, or skip | Depends on the water level |
| Heavy rain | Poor, and rockfall risk | Slippery; skip | Often suspended |
The lookouts where a car can stop, and how long each deserves on a good day, are in our Ma Pi Leng Pass guide.
Picking your month
| If you want | Go in | The catch |
|---|---|---|
| The clearest views of the canyon | October and November | The busiest weeks of the year |
| Clear views with fewer people | March and April | More haze than autumn |
| Buckwheat flowers on the way | Late October to November | Rooms fill; book early |
| Frost and an empty road | December to February | Fog may hide the pass entirely |
| Green hills and quiet roads | June to August | Rain, landslides, a brown river |
The 2026 buckwheat flower festival runs from 6 to 30 November, opening in Dong Van. Hotels on the loop fill up in those weeks, so book early. For how the seasons play out across the whole route, see our Ha Giang Loop guide.
The best time of day
Morning, almost always. Cloud tends to build over the ridges from late morning, especially in summer, and the light on the canyon is lower and warmer early. On the four-day trip from Hanoi we are on the pass at 08:00 on day three. On the three-day loop we reach it late in the morning of day two, after Lung Cu and the Vuong palace; when the afternoon forecast is poor, your guide can shorten the earlier stops to reach the pass sooner.
Ma Pi Leng on the clearest part of the day
Our guides re-plan the order of the stops around the forecast, private for your group and tailored on request.
Ha Giang Loop by Private Car — 3 Days3 days, 2 nightsSee the tour →Ha Giang Loop from Hanoi — 4 Days by Private Car4 days, 3 nightsSee the tour →Questions about Ma Pi Leng weather
What is the best month to see Ma Pi Leng Pass?
October and November give the most reliable clear days, with March and April a quieter second choice. December to February is often foggy, and June to August is the wettest time.
Is Ma Pi Leng foggy in the morning?
In winter the whole pass can sit in cloud all morning. In autumn and spring the fog is usually mist in the canyon that lifts by mid-morning, and the hour after it clears is often the best of the day.
Does it snow on Ma Pi Leng Pass?
Occasionally. The plateau is one of the few parts of Vietnam where temperatures fall below freezing, and snow and rime ice appear in some cold snaps between December and February.
How cold is Ma Pi Leng in December and January?
Days are around 15 °C in the towns and nights 7 to 10 °C, colder on the crest of the pass, and close to or below freezing in cold snaps.
Is it safe to cross Ma Pi Leng in the rainy season?
In a car with an experienced driver, usually yes, but landslides can close the road for hours or a day after heavy storms, and the Nho Que boats are often suspended.
Does the Nho Que boat run in bad weather?
Not after heavy rain or when the reservoir runs high.
Cross Ma Pi Leng in any season, dry and warm
A dry seat on the pass in any month, with guide, rooms, meals, the boat and the permit in one price for your group; free to cancel until 5 days before.
★Ha Giang Loop by Private Car — 3 DaysThree days around the Ha Giang Loop in your own car, from Ha Giang city — Heaven Gate, Lung Cu, the Sky Path on Ma Pi Leng and a private boat on the Nho Que. · 3 days, 2 nightsfrom$354/ person›
Choose your group size · price is the group totalSolo traveller$975BOOK →2 guests$1,075BOOK →3 guests$1,315BOOK →4 guests$1,415BOOK →See the full tour page →Ha Giang Loop from Hanoi — 4 Days by Private CarDoor to door from Hanoi: four days on the Ha Giang Loop with your own car, a licensed local guide and a good hotel every night. · 4 days, 3 nightsfrom$543/ person›
Choose your group size · price is the group totalSolo traveller$1,515BOOK →2 guests$1,640BOOK →3 guests$2,045BOOK →4 guests$2,170BOOK →See the full tour page →Monthly figures are rounded averages; boat and road conditions were checked in September 2026 and change with each storm.