Typhoon Season in Northern Vietnam: What Official Sources Say About Postponing Travel

For the 2026 storm season, Vietnam’s national hydro-meteorological forecasters expected 8-10 storms or tropical depressions on the East Sea, with 3-5 affecting the mainland, concentrated in July to September in the North. This article gathers what those forecasters, Vietnam’s dike-management and disaster-prevention department and the travel advisories of the United Kingdom, Canada and Australia say about typhoon season, storm classes, risk levels and postponing travel. It sets no go-or-stay threshold for a motorbike trip from Hanoi, because none of the pages does.

Storm season dates: the pages differ

The pages do not agree on when the season starts or ends, and the forecasting centre’s dates describe 2026, not every year. The same outlook says storm numbers were forecast near the multi-year average but warns of a high probability of strong storms or patterns bringing widespread heavy rain, and that a single strong storm, or a tropical depression combined with monsoon activity, can bring serious urban flooding, flash floods and landslides. Canada adds that even small tropical storms can quickly develop into major typhoons. For July and August 2026 the outlook expected moderate to heavy rain concentrated in the North, Thanh Hóa to Huế, the Central Highlands and the South, and for September to December it advised watching for widespread moderate to heavy rain, especially in the Centre.

How Vietnam’s forecasters class storms

The Vietnam Hydro-Meteorological Administration’s classification page (dated 23 June 2010, based on World Meteorological Organization classes) sorts tropical cyclones by maximum wind:

The page dates from 2010 and may not match current practice. It ties none of these classes to riding.

Risk levels in warning bulletins

The Dike Management and Natural Disaster Prevention and Control site summarises Decision 18/2021/QĐ-TTg of 22 April 2021. Disaster risk levels run from 1 to 5, each with a map colour: 1 light blue (low), 2 light yellow (medium), 3 orange (large), 4 red (very large) and 5 purple (catastrophic). Risk from tropical depressions and storms is graded only at levels 3 to 5. A level is set for each hazard and published with the forecast bulletin, and the level for two or more hazards occurring together or in succession can be raised by one level, or considered for a rise of two levels where serious loss of life and property is at risk. The summary does not say which wind speeds or rainfall match each level.

What the pages say about postponing

The department’s guidance for storm no. 3, carried by the Government e-newspaper on 21 July 2025, covers travel in the storm and rain season. It says to follow weather and disaster warnings, to proactively postpone or cancel trips in bad weather, to avoid travelling to coastal, island or mountain areas, or places at risk of landslides and flash floods, and not to go out at all while a storm is making landfall except in an emergency with specific guidance from the authorities. It also lists watching for rain, floods and inundation in low-lying and urban areas and for flash floods and landslides in the mountains, and moving motor vehicles to higher ground.

The advisories use softer wording. Canada says anyone travelling in typhoon season should be prepared to change plans on short notice, including cutting short or cancelling a trip, and to follow local authorities. The UK advice tells travellers to follow updates from the National Centre for Hydro-Meteorological Forecasting and the Japan Meteorological Agency. Smartraveller says to check weather updates, follow local advice and avoid flooded or damaged areas, and adds that travellers should check with their airline or tour company and make sure their travel insurance covers bad weather. Smartraveller and Canada both rate Vietnam overall at normal precautions and flag storm season separately. None defines “bad weather”.

Rain, floods and landslides around Hanoi

Canada describes seasonal flooding as common in and around Hanoi, particularly along the Red River, and, for the monsoon season in general, says roads may become impassable because of mudslides and landslides. The forecasting centre’s outlook names thunderstorms, whirlwinds, lightning, hail and strong gusts as accompanying hazards across the country. Smartraveller lists effects on flights, roads, power, transport and phone services. For day-trip pages, see Duong Lam from Hanoi by Motorbike: Village Access and a Day-Trip Plan and Dong Mo from Hanoi by Motorbike: A Lakeside Day-Trip Checklist. This article does not say how storms affect those routes.

Wind and wet roads for motorcyclists

The only motorcycle-specific wording in the passages read here comes from the UK Highway Code (updated 22 October 2025), which is written for UK roads and is not about typhoons. It says strong gusts can blow a motorcyclist off course on open stretches exposed to crosswinds or when passing bridges, that in very windy weather turbulence from large vehicles particularly affects motorcyclists, and that in wet weather stopping distances are at least double those on dry roads because tyres have less grip. For general riding tips, see Motorbike Riding Safety in Hanoi: Essential Tips.

Where the sources differ

The three advisories put the start of the season a month apart (May for the UK; June for Smartraveller and Canada, both of which say “usually”) and the end a month apart (November, or December for Canada). The forecasting centre’s July-to-September concentration for the North falls inside all three windows, though it describes only 2026. The sources also differ in tone: the department says to postpone or cancel trips in bad weather and not to go out during landfall, while the advisories ask travellers to be prepared to change plans and to follow local advice. The classification page and the Highway Code are general references, not typhoon guidance for riders.

What the pages leave out

No page gives a threshold for postponing a motorbike ride: no wind speed, warning level or forecast category is tied to riding, and the pages do not say whether a given risk level means staying off the road. None addresses rental motorbikes, rental shop terms, refunds, motorbike insurance, helmets or prices; the advisories mention only travel insurance and checks with an airline or tour company. None lists Hanoi road closures or restrictions during storms, or how long roads stay hazardous afterwards. The risk-level summary gives no wind or rainfall ranges, the classification page dates from 2010, and the 2026 outlook is a forecast, so no page here says which storms actually reached the North in 2026. The department guidance was written for a 2025 storm and is read here only for its travel and vehicle points.

Sources checked

• Hydro-Meteorological Administration: 2026 storm outlook (24 June 2026)
• Hydro-Meteorological Administration: storm classification (23 June 2010)
• Disaster prevention department: Decision 18/2021 summary
• Government e-newspaper: storm response guidance (21 July 2025)
• Smartraveller: Vietnam advice
• Canada: Vietnam travel advice
• UK government: Vietnam travel advice
• UK Highway Code: adverse weather

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