Month-specific sea-surface temperature · Vietnam

Nha Trang Sea Temperature in August

28.6°C

83.5°F

In August, sea-surface temperature near Nha Trang has a historical monthly average of 28.6°C. This is not the reading for any particular holiday date.

Across 2023–2025, the lowest and highest yearly August monthly means were 28.6–28.7°C. These are not daily extremes.

Previous month

July · 28.9°C

Change into August: -0.3°C

Next month

September · 30.0°C

Change into next month: +1.4°C

Can you swim or snorkel in Nha Trang in August?

At 28.6°C our temperature-only guide describes the water as very warm water. Comfort depends on your cold tolerance, immersion time and wind. A historical average cannot determine whether conditions are safe on any given day.

Do you need a wetsuit?

Swimwear is usually enough; a rash guard adds sun protection.

Which beach should you choose?

Look for a beach sheltered from the actual forecast waves and wind on your visit. Exposure, currents and entry conditions vary even where water temperatures are similar. Follow local warnings.

Check the current waves, wind and snorkeling forecast →

A live forecast does not predict a future August. Check again close to your trip.

Nha Trang Sea Temperature: All 12 Months

Choose a month for available historical evidence, month comparisons and swim guidance. Missing history is clearly marked and never presented as a long-term normal.

January 24.6°C February 25.6°C March 26.1°C April 27.7°C May 30.0°C June 29.8°C July 28.9°C August 28.6°C September 30.0°C October 29.4°C November 27.7°C December 26.1°C

Data source and limitations

Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2023–2025. Marine model grid near 12.24, 109.20. Based on 3 yearly monthly means and 2232 recorded samples. Source methodology.

Modelled sea-surface temperatures do not establish underwater visibility, wildlife, calm currents or safe entry.