Da Nang & Hoi An Rainy Season 2026: Should You Go Oct–Dec?

How rainy are October, November and December in Da Nang?

Short answer: October is the wettest month, with about 658 mm of rain over 21 rain days on the 1991–2020 normal, November is close behind at 486 mm, and December eases to 272 mm while staying grey.

• Source and period: Da Nang station normals for 1991–2020 from the Viet Nam Meteorological and Hydrological Administration, published by the WMO World Weather Information Service; a rain day is any day with 0.1 mm or more.
• Storms: NCHMF's long-term average is about 2 storms or tropical depressions in the East Sea each October; its 1 October 2026 outlook expects fewer than that this October, without ruling out a landfall.

Is Hoi An flooding in 2026, and how bad was 2025?

Short answer: no storm was active on 16 October 2026, but October rain spells have already brought flash-flood warnings to Da Nang.

• 2026 so far (as of 16 Oct 2026): Viet Nam's Disaster and Dyke Management Authority (VDDMA) lists 5 numbered storms (No. 1 Maysak in early July to No. 5 Saudel, 31 Aug–3 Sep) and 3 tropical depressions in the East Sea this year; on 16 October NCHMF showed no active storm or tropical depression.
• October 2026 rain: NCHMF forecast 150–300 mm, locally over 500 mm, between Hue and Da Nang from the evening of 7 October to the night of 8 October, and issued flash-flood and landslide warnings covering Da Nang on 13 and 14 October.
• October 2025, for scale: after days of heavy rain, the Thu Bon River at the Hoi An gauge peaked at 3.39 m at 03:00 on 30 October 2025, about 1.4 m above alarm level 3 and slightly below the 1964 record, according to VDDMA's quick report. Upstream at Cau Lau it reached 5.62 m, 0.14 m above the 1964 record.

• Where Hoi An sits now: National Assembly Resolution 202/2025/QH15 (adopted 12 June 2025) merged Quang Nam province into Da Nang city, and since the new local government started on 1 July 2025 Hoi An has been part of Da Nang; the former Hoi An city is now Hoi An, Hoi An Dong and Hoi An Tay wards plus Tan Hiep commune (the Cu Lao Cham islands). Official flood warnings for Hoi An are therefore issued under Da Nang.

What gets disrupted in the rainy season?

Short answer: rain mostly changes what you do on a given day; outdoor sights, boats and some flights are what get cancelled, usually around a specific storm or flood spell.

• Hoi An old town: when the Thu Bon rises, riverside streets can flood quickly; on 30 October 2025 many areas of Hoi An ward were under 2–3 m of water, according to Tuoi Tre. Riverside boat rides stop during floods, so keep your Hoi An night flexible.
• Flights: each airline decides on its own flights, and the Civil Aviation Authority of Viet Nam can close airports for hours as a storm passes. For Typhoon Kalmaegi it closed six central airports, including Chu Lai airport (now in Da Nang city), from 7 pm on 6 November to 3 am on 7 November 2025.
• Ba Na Hills and Son Tra: mountain views, cable cars and hill roads depend on visibility and wind, so book Ba Na Hills tickets for a day with a clear forecast and check the operator's notice on the morning.
• Beaches: swim only where lifeguard flags allow it; the sea is often rough in these months.

How do you plan an October–December trip that still works?

Short answer: go if your dates are fixed, but build in flexibility, act on official warnings rather than private forecasts, and keep one dry-weather backup per day.

1. Before you book: pick refundable or changeable hotel rates in Hoi An and avoid tight same-day connections out of Da Nang.
2. A week out: follow NCHMF's storm and heavy-rain bulletins; weather apps help with timing showers but are not official warnings.
3. On the day: if a flood or flash-flood warning covers Hoi An or your route, swap outdoor plans for indoor ones in central Da Nang and ask your hotel about street flooding.
4. If a flight is cancelled: use the rebooking or refund options your airline offers; storm rules differ by airline.
5. Insurance: some policies exclude a storm that was already named when you bought cover, so buy early and read the weather clause.

• Stay connected: official alerts and Grab rides need data, so set up a Vietnam eSIM before you land.
• Emergency numbers and taxi tips: see Vietnam Tourist Scams 2026.

General information — check official sources for your situation.