Nha Trang in August: the last calm-sea month before the rains
August in Nha Trang: highs around 32–33 °C, water at 28–29 °C, about ten short showers. The last month of the calm-sea season — the rains start in September. The 2 September holiday, what to pack, day trips.
August is the last month of Nha Trang’s calm-sea season (February–August). It’s still hot, with average highs around 32–33 °C, water at 28–29 °C, and about ten rainy days and 52 mm of rain by the averages. The islands, boat trips and diving are all on. The rainy season starts in September, so late August is the last calm stretch before it. 2 September is Independence Day, a national holiday.
What’s on in August?
| Activity | In August | More |
|---|---|---|
| Monkey Island and Orchid Island | boats from Long Phú pier; islands open 7:30–16:30 | Nha Trang islands |
| Boat trips, fishing | calm-sea season (February–August) | boat trips |
| Diving, snorkelling | season runs February to August | diving |
| Surfing | off season: schools run September to May | surfing |
| Yang Bay Park, Ba Ho waterfalls | go in the morning, it’s hot by midday | Yang Bay |
| Mud baths | an option for a hot day | mud baths |
What is the weather like in Nha Trang in August?
Hot and sunny. By the Nha Trang weather station averages, August has an average high of 32.6 °C, nights around 25.5 °C, about 52 mm of rain, around ten rainy days and about 236 hours of sunshine. By the averages August is as hot as July. All averages are in the weather block above.
Does it rain in Nha Trang in August?
Short showers, but it isn’t the rainy season: about ten days with rain and 52 mm for the month by the averages. Compare November, with about 18 days and 382 mm. Nha Trang’s rainy and stormy season is September to December.
How warm is the sea in Nha Trang in August?
About 28–29 °C — three climate references agree. The water stays warm all summer and into October. All months and resorts are in sea temperature in Vietnam.
What changes by the end of August?
The calm-sea season ends and the rainy season begins in September: by the averages September has about 14 rainy days and October about 18, and the first storms are possible. The calm-sea and diving season lasts until the end of August — if the islands and diving matter, don’t leave them for September. What comes next — Nha Trang in September. 2 September and the day next to it are a holiday, so book accommodation and tickets early.
Where to go for a day trip in August?
The Monkey and Orchid islands — boats leave Long Phú pier half an hour north of town, and the islands are open 7:30–16:30. Into the hills: Yang Bay Park (about an hour west) and the Ba Ho waterfalls (about 40 minutes north). After the late-2025 floods only the walking trail at Ba Ho was open, so check before you go. Set off in the morning — it’s hot by noon. Everything is in what to see in Nha Trang.
What to pack for Nha Trang in August?
High-factor sunscreen, a hat, light long-sleeved clothes for boats and excursions, and water. A light raincoat or umbrella for a short shower. Shoes for the rocks at the waterfalls and a dry bag for your phone on the islands.
Can you swim in Nha Trang in August?
Yes. The water is about 28–29 °C and the sea is calm. Swim in the morning or late afternoon — the midday sun is harsh. On windy days watch the flags and listen to the lifeguards. How to get out of a rip current — Nha Trang beaches.
Is August a good time to visit Nha Trang?
Yes, if you want a warm, calm sea, the islands and diving and you cope well with heat. If heat is hard for you, choose February to April: drier and milder. The month before — Nha Trang in July; the month after — Nha Trang in September; all months — when to go to Nha Trang.
FAQ
Is August a good time for Nha Trang? Yes, for the sea, islands and diving. It’s hot — plan your day around the morning and evening.
Does it rain in Nha Trang in August? Short showers: about ten rainy days and 52 mm a month by the averages. The rainy season is September to December.
How warm is the water in August? About 28–29 °C.
Is Nha Trang hot in August? Average highs are 32.6 °C, nights around 25.5 °C.
Is there diving in August? Yes, the season runs February to August.
Can you surf? There are almost no waves near town in summer: schools run September to May.
Sources and checks
Weather, rain and sunshine — Nha Trang weather station averages (QCVN 02:2022/BXD) in the weather block. Sea temperature — World Sea Temperatures, weather2travel and Climates to Travel, checked 12 November 2026. The 2 September holiday — Article 112 of the Labour Code (LuatVietnam). Calm-sea and diving seasons — our boat-trip and diving guides; surf season — school pages in our surfing guide (sources in each). The islands, Ba Ho and Yang Bay — our "How to get there" pages, checked 18 October 2026. Packing and planning tips are ours.