When is the best time to swim in the sea in Nha Trang, Vietnam?

Travelers report that Nha Trang’s rainy season generally runs from October through February, with rainfall easing noticeably by February. In December and early January, the sea can be cold and rough and fully sunny days may be scarce, limiting swimming opportunities.

For more reliably beach-friendly weather in Nha Trang, swimming trips are recommended from March, as February can still bring wind and waves.

According to travelers' experience, in mid-January the sea water in Nha Trang is around 24-25°C, which isn't considered cold. There are also beaches with calmer waves suitable for swimming during this period, as long as there's no prolonged heavy rain.

A July update advises against January for sea swimming: the water can be cool, with rain and waves. For a beach-focused trip, arrive from at least the second half of February.

November is considered a risky month in Nha Trang because of heavy rain, especially in the surrounding mountains. Sea conditions can also be rough during this period.

January and early February in Nha Trang can be windy, and the sea may feel fairly cool. This period is better for sunbathing and beach walks than long swims.