yearsofweather

Hoi An in August:
very hot, frequent rain

Hoi An, Vietnam · Records from 2006 to 2025. Not a forecast.

Mean high35°Hottest day 38.5° (2021)
Mean low26°Coldest night 23.7° (2014)
Rain days9 days3-21 by year
Rainfall142mmDaylight 12.8 → 12.5 h
Hoi An's 12 months iBest: January to March
Trip types Beach Goodwarm seaSightseeing on foot Poorhot and muggy
Humidity77%31 muggy days
Clear days2 days21 overcast days
Mean wind7 km/hRarely windy
Sea temperature30.2°29.8-30.5° by year (last 6)
Sunrise / sunset (15th)05:31 / 18:11Daylight 12.8 → 12.5 h

Hoi An in August

The last month of the dry season. Flood risk is low and the beach is still good, but check for typhoon news. In 2026 August 26 was the 14th-day lantern night, an ordinary monthly one.

August brought serious heat to Hoi An, 35°C on a typical afternoon and 26°C overnight. Early mornings were the best time to be outside. There were 9 rain days on average, roughly one day in three. Averages hide a lot here: one year saw 3, another 21.

31 days past 30°C made it a month for early starts and a long lunch indoors. Rain days averaged 16 mm each, so when it rained it rained properly.

Typhoons i

3 of the last 20 years had a tropical storm pass within 300 km this month.

  • Mindulle (2010), 123 km away typhoon strength
  • Mangkhut (2013), 192 km away tropical storm
  • Podul (2019), 193 km away tropical storm
1 2 3 4 5 6 27 38 109 1010 411 112

Date by date i

‹ July August 2027 September ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-7rain on 30% of days35° 26°
8-14rain on 21% of days35° 26°
15-21rain on 29% of days35° 26°
22-28rain on 33% of days34° 26°
29-31rain on 38% of days34° 25°

0-5/206-8/209-11/2012-20/20

1-7rain on 30% of days35° 26°
8-14rain on 21% of days35° 26°
15-21rain on 29% of days35° 26°
22-28rain on 33% of days34° 26°
29-31rain on 38% of days34° 25°
Tap another date to change

20061mm
2007none
2008none
2009none
2010none
2011none
20129mm
201312mm
20148mm
201521mm
20169mm
201745mm
2018none
2019none
2020none
20215mm
2022none
2023none
2024none
202525mm
Holidays in August (2027) · No public holidays this month.

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
1 d 15 d
2007
4 d 9 d
2008
4 d 6 d
2009
3 d 8 d
2010
5 d 21 d
2011
2 d 8 d
2012
1 d 7 d
2013
4 d 7 d
2014
3 d 10 d
2015
1 d 4 d
2016
2 d 13 d
2017
2 d 9 d
2018
2 d 7 d
2019
0 d 8 d
2020
2 d 9 d
2021
0 d 3 d
2022
5 d 12 d
2023
1 d 7 d
2024
0 d 4 d
2025
0 d 14 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
8
8
3
3
6
7
7
3
5
5
4
8
3
2
5
7
6
8
6
4
4
4
6
7
7
9
6
7
8
9
6
Rain days on trip
14435214312220205100

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

One row per year, one cell per day. 2021 had 3 rain days, 2010 had 21.

Hoi An through the year

MonthHighLowRain daysRainfallSea
JanuaryGood 25°19°9 days85mm 24°
FebruaryGood 26°20°4 days24mm 23°
MarchGood 29°22°3 days27mm 24°
April 31°24°4 days64mm 26°
May 34°26°4 days86mm 28°
June 35°27°5 days61mm 30°
July 35°26°8 days105mm 30°
August 35°26°9 days142mm 30°
September 33°25°13 days404mm 30°
October 30°24°18 days760mm 29°
November 28°23°17 days460mm 27°
December 26°21°15 days246mm 26°

Common questions

Does it rain a lot in Hoi An in August?

Over the past 20 years August averaged 9 rain days (1 mm or more) out of 31. Individual years ran from 3 in the driest to 21 in the wettest.

What should I wear in Hoi An in August?

Days averaged 35°C and nights 26°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.

Can you swim in Hoi An in August?

Sea surface temperature averaged 30.2°C in August, warm enough to stay in for a long swim. Year to year it ranged 29.8-30.5°C. Check local flags for waves and jellyfish on the day.

Is August a good time to visit Hoi An?

On warmth and rain days alone, Hoi An's easiest months were January to March. August ranked 11 of 12.

Is Hoi An humid in August?

Mean relative humidity was 77%, with about 31 muggy days (dew point of 20°C or more) in the month.