In brief
In January in Nha Trang waves above 1 m are common: on 34% of days the highest wave of the day is 1 m or less. Rain of 5 mm or more falls on about 8% of days (2.1 mm a day on average), with about 5.8 hours of sun a day. Daytime 27.2°C, night 21.9°C, sea temperature about 24.6°C. Ranked by share of calm days, January is number 11 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 11 of 12 · 5 years
Waves (daily maximum)
1.1 m
average · 5 years
Rainy days
8 %
days with 5 mm or more of rain · average 2.1 mm/day · 26 years
Temperature
27° by day
night 22°C · sea 24.6°C · sun 5.8 h/day
Early, mid and late January
early January (1-10): calm sea 25% of days, rain of 5 mm+ 11%; mid January (11-20): calm sea 38% of days, rain of 5 mm+ 9%; late January (21-31): calm sea 45% of days, rain of 5 mm+ 7%.
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 January?
According to the Open-Meteo Marine model (5 years), in January the highest wave of the day is 1 m or less on 34% of days; the average daily maximum wave height is 1.15 m. Summary of the statistics: waves above 1 m are common. Ranked by share of calm days, January is number 11 of 12. These are statistics from past years, not a forecast.
Does it rain in Nha Trang in January?
According to the Nha Trang weather station (26 years), rain of 5 mm or more falls on about 8% of days in January, with 2.1 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 January?
Sea surface temperature from the Open-Meteo Marine model (5 years) averages about 24.6°C.
How hot is Nha Trang in January?
According to the Nha Trang weather station (26 years), daytime highs average 27.2°C and nights 21.9°C, with about 5.8 hours of sun a day.
What is the weather like in late January in Nha Trang?
By part of the month: early January (1-10): calm sea 25% of days, rain of 5 mm+ 11%; mid January (11-20): calm sea 38% of days, rain of 5 mm+ 9%; late January (21-31): calm sea 45% of days, rain of 5 mm+ 7%. Statistics for 5 years (sea) and 26 years (rain), not a forecast.
Is January a good time to go to Nha Trang?
It depends on what you plan. For the beach: calm sea on 34% of days (number 11 of 12 months for calm seas, 1 = calmest). Rain of 5 mm+ on 8% of days (number 9 of 12 for rainy days, 1 = rainiest), water 24.6°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.