Planning a Car Itinerary Through Hai Van, Bach Ma or Phong Nha in Central Vietnam's Storm Season

Storms and heavy rain in central Vietnam tend to cluster around October and November, and the places most often affected in a car itinerary are the Hai Van pass, Bach Ma and the river and cave routes at Phong Nha. This guide does not forecast the weather; it helps you build a schedule with a fallback: what has changed before and when, whose warnings to follow, which stops are soft and can be dropped, and what to confirm with dispatch before the trip.

What can change in storm season

The examples below carry dates so you can see the kind of change, not to predict this year.

• Hai Van pass. According to VnExpress (posted 13 October 2023), after heavy rain hundreds of cubic metres of earth and rock fell on the pass, the Da Nang side had 5 landslide points from the upper slope to the lower slope, and both ends of the road had to be closed. The article does not say how long the closure lasted. Consequence for your plan: taking the pass instead of the tunnel is the weather-dependent choice on the Da Nang to Hue route.
• Bach Ma. According to VnExpress (posted 29 October 2025), rainfall at the top of Bach Ma reached 1,739 mm in 24 hours from 19:00 on 26 to 19:00 on 27 October 2025. Besides the rain, according to the park’s notice of 25 December 2025 the road to the summit has a landslide at km 12, and the newspaper Tien Phong (21 June 2026) reports that the road is still not open; see the Bach Ma National Park guide.
• Phong Nha. According to Bao Van Hoa (posted 7 October 2020), the Phong Nha - Ke Bang Tourism Centre temporarily stopped receiving visitors on the Phong Nha cave, Tien Son cave, Chay River - Dark Cave and Nuoc Mooc spring routes when the water in the Son and Chay rivers and the streams rose fast. Bao Van Hoa (posted 17 July 2018) reports that the management board told units to follow weather forecasts and have plans ready to stop receiving visitors. Both articles are old, so ask for the current position instead of treating them as fixed rules.
• A climate boundary. The Hai Van pass is often described as the boundary between two climate zones, so Da Nang and Hue can have different weather on the same day. Check the forecast for both ends of the leg, not only where you start.

Whose warnings to follow

This guide gives no forecast because it changes daily. Follow the forecasts and warnings of the National Centre for Hydro-Meteorological Forecasting, the notices of the local traffic authority and the notices of the body that manages each stop (national park, heritage site). The seasonal outlook the weather service publishes differs each year; one outlook from 2021, for example, spoke of repeated heavy rain in October and November, but it cannot be used for this year. Sun Travel dispatch will confirm the car and the schedule with you but does not replace official warnings.

Building a schedule with a fallback

1. Sort the stops. Mark the hard stops (a flight, a train time, a booking already paid for) and the soft stops (viewpoints, outdoor walks, caves, rivers). Only soft stops should be replaced or dropped.
2. Choose an indoor or less weather-dependent alternative for each soft stop. For example, the Museum of Cham Sculpture in Da Nang is open from 7:00 to 17:00 every day according to the museum’s official page; check again before your date.
3. Leave extra time at hard stops. For a flight, count back more than on a normal day; see when to leave Hue for a flight or check-in for the formula.
4. Choose the decision moments. Agree with dispatch to review the warnings once on the evening before and once on the morning itself, instead of deciding after you are on the road.

What to confirm with dispatch

• How you travel between the tunnel and the pass at Hai Van, and who decides in bad weather.
• Which soft stops can be dropped or swapped, and which hard stops cannot.
• A change of pickup time or stop order changes the timing and how the trip is calculated, so it must be confirmed again for the trip; this guide does not promise a particular alternative.
• Changes to the schedule and cases of force majeure follow the confirmation for the trip.

The scope of the service and how to send a multi-day schedule are on the page for multi-day car hire with a driver in Central Vietnam and the long routes are on the page for long-distance routes in Central Vietnam.

Common questions about private car trips in Central Vietnam in storm season

Can the Hai Van pass be closed in heavy rain? +

It can. According to VnExpress on 13 October 2023, after heavy rain the pass had several landslide points and both ends of the road had to be closed. Ask dispatch how you travel between the tunnel and the pass, and who decides in bad weather.

Does Phong Nha close when the rivers rise? +

It has. Bao Van Hoa on 7 October 2020 reported that the tourism centre stopped receiving visitors on the cave and river routes when the water rose fast. That is an old article, so ask the managing body about the position on your date.

Which forecasts and warnings should I follow? +

The forecasts and warnings of the National Centre for Hydro-Meteorological Forecasting, the notices of the local traffic authority and the notices of the body that manages each stop. Check both ends of the leg because the weather can differ.

How do I cancel or change a car trip if a storm is coming? +

Cancellation is free if Sun Travel receives notice at least 2 hours before pickup. Later notice, changes to the schedule and force majeure follow the terms in the quote or trip confirmation.

How should I plan around a flight or train ticket I have already bought? +

Treat them as hard stops, leave more time than on a normal day and change only the soft sightseeing stops. Agree with dispatch to review the warnings on the evening before and on the morning itself instead of deciding after you are on the road.