In brief
In March in Nha Trang the sea is changeable, with calm days alternating with rough ones: on 72% of days the highest wave of the day is 1 m or less. Rain of 5 mm or more falls on about 6% of days (1.5 mm a day on average), with about 8.3 hours of sun a day. Daytime 29.5°C, night 23.6°C, sea temperature about 26.1°C. Ranked by share of calm days, March is number 8 of 12.
This is reference statistics from past years, not a forecast or official data. For the coming days, see the “Nha Trang Now” page and the Vietnam national hydrometeorological service (nchmf.gov.vn).
Calm sea
daily wave ≤1 m; ranked 8 of 12 · 5 years
Waves (daily maximum)
0.8 m
average · 5 years
Rainy days
6 %
days with 5 mm or more of rain · average 1.5 mm/day · 26 years
Temperature
30° by day
night 24°C · sea 26.1°C · sun 8.3 h/day
Early, mid and late March
early March (1-10): calm sea 58% of days, rain of 5 mm+ 3%; mid March (11-20): calm sea 68% of days, rain of 5 mm+ 6%; late March (21-31): calm sea 83% of days, rain of 5 mm+ 9%.
This month compared with the others
My travel dates
Choose your arrival and departure - we show how many days of calm sea there usually are on those dates. If your dates are within the next 16 days, we add the real forecast.
Frequently asked questions
What is the sea like in Nha Trang in March?
According to the Open-Meteo Marine model (5 years), in March the highest wave of the day is 1 m or less on 72% of days; the average daily maximum wave height is 0.76 m. Summary of the statistics: the sea is changeable, with calm days alternating with rough ones. Ranked by share of calm days, March is number 8 of 12. These are statistics from past years, not a forecast.
Does it rain in Nha Trang in March?
According to the Nha Trang weather station (26 years), rain of 5 mm or more falls on about 6% of days in March, with 1.5 mm of rain a day on average. These are statistics from past years, not a forecast.
How warm is the sea in Nha Trang in March?
Sea surface temperature from the Open-Meteo Marine model (5 years) averages about 26.1°C.
How hot is Nha Trang in March?
According to the Nha Trang weather station (26 years), daytime highs average 29.5°C and nights 23.6°C, with about 8.3 hours of sun a day.
What is the weather like in late March in Nha Trang?
By part of the month: early March (1-10): calm sea 58% of days, rain of 5 mm+ 3%; mid March (11-20): calm sea 68% of days, rain of 5 mm+ 6%; late March (21-31): calm sea 83% of days, rain of 5 mm+ 9%. Statistics for 5 years (sea) and 26 years (rain), not a forecast.
Is March a good time to go to Nha Trang?
It depends on what you plan. For the beach: calm sea on 72% of days (number 8 of 12 months for calm seas, 1 = calmest). Rain of 5 mm+ on 6% of days (number 11 of 12 for rainy days, 1 = rainiest), water 26.1°C. These are statistics from past years, not a forecast.
Rain and air temperature: Nha Trang weather station (WMO 48877, NOAA GHCN-Daily), 2000-2025, 26 years. Waves and sea temperature: Open-Meteo Marine model, data since 10.2021, 5 years. Sunshine hours: Vietnam standard QCVN 02:2022/BXD. A ±7-day window around each date, all years pooled.