Nha Trang in April: dry, 27–28 °C water and clear diving
April in Nha Trang is the last month before the heat: about five rainy days, highs around 31 °C, water at 27–28 °C, a calm sea and clear water for diving. The 16 and 30 April holidays, early vs late April, what to pack.
April in Nha Trang is the last month of the "velvet season" before the heat. It's dry, with about five rainy days, around 31 °C in the daytime and the most sunshine of the year. The sea is calm, the water warms to 27–28 °C, and April to June usually brings the clearest water for diving. Surfing is winding down: schools run until May and the waves are smaller in April. Vietnam has two holidays in April: Hùng Kings' Day on 16 April 2027 and Reunification Day on 30 April, followed by 1 May.
What's on in April?
| Activity | In April | More |
|---|---|---|
| Diving, snorkelling | in season; clearest water usually April–June | diving |
| 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 |
| Surfing | end of season: schools run until May | surfing |
| Ba Ho waterfalls | dry, but check what reopened after the 2025 floods | Ba Ho |
| Yang Bay Park | day trip, about an hour from town | Yang Bay |
| Government offices | days off by law: 16 and 30 April, 1 May 2027 | holidays in Vietnam |
What is the weather like in Nha Trang in April?
Dry and sunny. By the Nha Trang weather station averages, April has about five rainy days and around 42 mm of rain, an average daytime high of 31 °C, nights around 25 °C and about 260 hours of sunshine — the year's peak, shared with May. All averages are in the weather block above. From May it gets hotter and, by the averages, rainy days nearly double.
How warm is the sea in Nha Trang in April?
27–28 °C — three climate references agree. That's 1–2 degrees warmer than March; from May to October the water stays around 28–29 °C. All months and resorts are in sea temperature in Vietnam.
Is April good for diving?
Yes. Nha Trang's diving season runs from February to August, and the clearest water is usually April to June. The sea is calm and trips to Hon Mun go out regularly. Windy days still happen, so ask the centre what happens if a dive is cancelled. How to choose a centre — diving in Nha Trang.
Early or late April — any difference?
Early April is slightly cooler and you may still catch a wave for surfing. Late April is warmer, and 30 April and 1 May are national holidays: book accommodation and tickets for those dates early. In 2027 they fall on a Friday and a Saturday; the government usually announces any swapped days off in spring.
Where to go for a day trip in April?
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. In the heat, set off in the morning. Everything is in what to see in Nha Trang.
What to pack for Nha Trang in April?
High-factor sunscreen, a hat and light long-sleeved clothes for boat trips — April has the longest sunshine of the year. Water for the islands and waterfalls, shoes for the rocks and a dry bag for your phone. You'll hardly need a raincoat.
Can you swim in Nha Trang in April?
Yes. The water is 27–28 °C and the sea is calm. On windy days watch the flags and listen to the lifeguards. How to get out of a rip current — Nha Trang beaches.
Nha Trang in April or May?
April is drier and a little cooler: about five rainy days versus nine in May, and a 31 °C average high versus 32 °C. The water is warmer in May, around 28–29 °C, but surfing ends in May. More in Nha Trang in May. The month before — Nha Trang in March; all months — when to go to Nha Trang.
FAQ
Is April a good time for Nha Trang? Yes: it's dry, the sea is calm, the water is 27–28 °C and diving visibility is good. Hotter than winter, but not yet May.
Does it rain in Nha Trang in April? Little: about five rainy days and around 42 mm a month by the long-term averages.
How warm is the water in April? 27–28 °C.
Is Nha Trang hot in April? Average highs are about 31 °C, nights about 25 °C. By the averages the hottest months are May to August.
Is there diving in April? Yes, the season runs February to August; the clearest water is usually April to June.
Is it surf season? The tail end: schools run until May, and April waves are smaller than in winter.
What holidays are in April? Hùng Kings' Day on 16 April 2027, Reunification Day on 30 April and Labour Day on 1 May. These are statutory days off; the government usually announces any swapped days in spring.
March or April in Nha Trang? March is milder with water around 26 °C; April has warmer and usually clearer water for diving. More in Nha Trang in March.
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. Holidays — Article 112 of the Labour Code (LuatVietnam); Hùng Kings' Day 2027 — Báo Lào Cai, 26 October 2026. 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.