Vietnam in September: the rains reach the centre — where to go for the beach
September is when the rainy season reaches central Vietnam: about 351 mm and 15 rainy days in Da Nang, about 166 mm and 14 days in Nha Trang, where the rains are just beginning. The south is still wet: about 474 mm and 23 rainy days on Phu Quoc.
September is when the rainy season reaches central Vietnam: about 351 mm and 15 rainy days in Da Nang, about 166 mm and 14 days in Nha Trang, where the rains are just beginning. The south is still wet: about 474 mm and 23 rainy days on Phu Quoc. The north has less rain than in August: about 228 mm and 13 days in Hanoi. The sea is warm everywhere, 28–30 °C. 2 September is Independence Day, a two-day holiday. According to GOV.UK, the tropical storm season runs from May to November.
What is the weather like in Vietnam in September?
| Where | Day / night | Rain | Rainy days | Sea |
|---|---|---|---|---|
| Mui Ne (Phan Thiet station) | 31.3 / 24.6 °C | 187 mm | 17 | 28–29 °C |
| Phu Quoc | 29.5 / 25 °C | 474 mm | 23 | 29 °C |
| Nha Trang | 31.7 / 24.9 °C | 166 mm | 14 | 29 °C |
| Da Lat | 22.9 / 16 °C | 283 mm | 24 | — |
| Da Nang and Hoi An | 31.8 / 24.5 °C | 351 mm | 15 | 29–30 °C |
| Hanoi | 31.5 / 25.2 °C | 228 mm | 13 | — |
| Ha Long (Bai Chay) | 30.7 / 24.4 °C | about 280 mm | 14 | — |
"Day" is the average daily high and "night" the average nightly low (QCVN 02:2022/BXD). Sea temperature is from climate references; not given for Da Lat, Hanoi or Ha Long. Ho Chi Minh City isn't covered by these averages.
Where to go in Vietnam in September?
No place is reliably dry in September. In Nha Trang the rains are only beginning and the sea is still warm — see Nha Trang in September. Da Nang's rains and rip currents begin — Da Nang in September. Phu Quoc is in the thick of its rains with waves on the west coast — Phu Quoc in September. Planning a winter stay? September is the time to book: all months — when to go to Vietnam.
FAQ
Where is it dry in Vietnam in September? Nowhere is reliably dry: the rains begin in the centre, and the south and north are wet too.
Can you swim in Vietnam in September? Yes, the sea in the south and centre is 28–30 °C. Swim near lifeguards and stay out under a red flag.
What holidays are in September? Independence Day on 2 September, a two-day holiday. All dates — holidays in Vietnam.
Sources and checks
Weather — long-term averages from the Phan Thiet, Phu Quoc, Nha Trang, Da Lat, Da Nang, Hanoi and Bai Chay stations (QCVN 02:2022/BXD, tables A.3, A.4, A.25, A.28); Ha Long rainfall is rounded because the standard's annual total for Bai Chay doesn't match its monthly figures. Sea temperature — World Sea Temperatures, weather2travel and Climates to Travel, checked 12 November 2026. Storm season — GOV.UK. Holidays — Article 112 of the Labour Code (LuatVietnam). Sea seasons by city — our month-by-month guides (sources there). Advice is ours.