Nha Trang in September:
seriously hot

Nha Trang, Vietnam · Records from 2006 to 2025. Not a forecast. Rain not yet station-calibrated

Mean high32°Hottest day 36.8° (2016)
Mean low26°Coldest night 23.8° (2009)
Rain days28 days20-30 by year
Rainfall305mmDaylight 12.4 → 12.0 h
Nha Trang's 12 months iBest: January and February (rain uncalibrated)
Trip types Beach Poorfrequent rainSightseeing on foot Poorhot, frequent rain and muggy
Humidity84%30 muggy days
Clear days1 day21 overcast days
Mean wind3 km/hRarely windy
Sea temperature29.5°28.6-30.1° by year (last 6)
Sunrise / sunset (15th)05:32 / 17:45Daylight 12.4 → 12.0 h

Nha Trang in September

The rainy season begins and the waves start to rise. Rain picks up noticeably, and typhoon risk starts to matter, so check the weather before you go. Around National Day on September 2, domestic visitors can crowd the city.

September brought serious heat to Nha Trang, 32°C on a typical afternoon and 26°C overnight. Early mornings were the best time to be outside. Rain fell on more than half the days: 28 on average. Most years sat near the average of 28, though 2019 dipped to 20 and 2007 climbed to 30.

With 28 days above 30°C on average, most of the month felt like high summer.

Typhoons i No tropical storm passed within 300 km in this month over the last 20 years. Typhoons: March to May and October to December

Date by date i

‹ August September 2027 October ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-4rain on 90% of days33° 26°
5-11rain on 94% of days33° 26°
12-18rain on 96% of days32° 26°
19-25rain on 88% of days32° 26°
26-30rain on 89% of days32° 26°

15-17/2018/2019/2020/20Rain was common on almost every date this month, so the shades compare dates within this month.

1-4rain on 90% of days33° 26°
5-11rain on 94% of days33° 26°
12-18rain on 96% of days32° 26°
19-25rain on 88% of days32° 26°
26-30rain on 89% of days32° 26°
Tap another date to change

20063mm
20073mm
20084mm
200918mm
20104mm
201113mm
201216mm
20136mm
201413mm
20153mm
201613mm
20175mm
20182mm
20191mm
202011mm
202123mm
202226mm
202313mm
20241mm
202517mm
Holidays in September (2027)
  • September 2 to September 5 National Day break, proposed 4-day plan *
  • September 6 Labor Day

* Provisional: not yet officially announced.

1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)

Your trip dates, the past 20 years

Trip dates ~

You can also click two dates on the axis. Hover a cell to see that day's rain.
Trip rain days Month rain days
2006
7 d 28 d
2007
7 d 30 d
2008
7 d 24 d
2009
7 d 29 d
2010
7 d 27 d
2011
7 d 27 d
2012
7 d 30 d
2013
7 d 27 d
2014
7 d 28 d
2015
7 d 28 d
2016
7 d 28 d
2017
3 d 24 d
2018
7 d 28 d
2019
4 d 20 d
2020
6 d 29 d
2021
7 d 27 d
2022
7 d 29 d
2023
7 d 29 d
2024
7 d 29 d
2025
7 d 29 d
Years with rain
Tap a date to start, tap another to end. Each cell is that date in one year.
'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
of 20
19
18
16
19
19
19
20
18
19
18
19
18
20
18
20
19
19
20
20
17
18
17
19
15
17
17
18
19
17
18
Rain days on trip
77777777777374677777

No rain1-9 mm10 mm or more Dates outside your trip are dimmed.

One row per year, one cell per day. 2019 had 20 rain days, 2007 had 30.

Nha Trang through the year

MonthHighLowRain daysRainfallSea
JanuaryGood 27°22°11 days89mm 25°
FebruaryGood 28°23°7 days43mm 25°
March 30°24°8 days55mm 26°
April 31°25°13 days83mm 28°
May 33°26°25 days247mm 29°
June 33°27°26 days201mm 29°
July 33°27°26 days227mm 29°
August 33°26°26 days240mm 29°
September 32°26°28 days305mm 30°
October 31°25°27 days276mm 29°
November 29°24°21 days326mm 27°
December 28°23°16 days197mm 26°

Common questions

Does it rain a lot in Nha Trang in September?

Over the past 20 years September averaged 28 rain days (1 mm or more) out of 30. Individual years ran from 20 in the driest to 30 in the wettest. Rain for this month is not yet station-calibrated and may be overcounted.

What should I wear in Nha Trang in September?

Days averaged 32°C and nights 26°C. Pack an umbrella, sandals that can get wet, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.

Can you swim in Nha Trang in September?

Sea surface temperature averaged 29.5°C in September, warm enough to stay in for a long swim. Year to year it ranged 28.6-30.1°C. Check local flags for waves and jellyfish on the day.

Is September a good time to visit Nha Trang?

On warmth and rain days alone, Nha Trang's easiest months were January and February. September ranked 8 of 12.

Is Nha Trang humid in September?

Mean relative humidity was 84%, with about 30 muggy days (dew point of 20°C or more) in the month.