Hanoi in August:
very hot

Hanoi, Vietnam · Records from 2006 to 2025. Not a forecast. Rain not yet station-calibrated Temperature partly station-corrected

Mean high33°Hottest day 39.2° (2025)
Mean low26°Coldest night 23° (2010)
Rain days23 days19-28 by year
Rainfall321mmDaylight 13.1 → 12.6 h
Hanoi's 12 months iBest: February, March and December (rain uncalibrated)
Trip types Sightseeing on foot Poorhot, frequent rain, muggy and storm risk
Humidity84%31 muggy days
Clear days1 day22 overcast days
Mean wind6 km/hRarely windy
Sunrise / sunset (15th)05:35 / 18:27Daylight 13.1 → 12.6 h

Hanoi in August

The month with the most wet days. A typhoon can cancel Ha Long Bay cruises or hide the scenery in mist. Leave slack in your schedule. Heavy rain also slows getting around the city.

Days averaged 33°C and nights 26°C. Midday was for air conditioning, a cold drink or a long lunch out of the sun. Rain was a regular part of the month, showing up on 23 days on average. The driest year, 2013, had 19 rain days; the wettest, 2010, had 28.

Highs topped 30°C on 27 days of the month on average. Mixing in indoor stops at midday made sense.

Typhoons i

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

  • Dianmu (2016), 26 km away tropical storm
  • Wipha (2019), 47 km away tropical storm
  • Kai-Tak (2012), 76 km away tropical storm
1 2 3 4 5 36 117 88 49 610 111 12

Date by date i

‹ July August 2027 September ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-7rain on 79% of days33° 26°
8-14rain on 68% of days34° 27°
15-21rain on 76% of days33° 26°
22-28rain on 71% of days33° 26°
29-31rain on 70% of days33° 26°

12/2013-14/2015/2016-20/20Rain was common on almost every date this month, so the shades compare dates within this month.

1-7rain on 79% of days33° 26°
8-14rain on 68% of days34° 27°
15-21rain on 76% of days33° 26°
22-28rain on 71% of days33° 26°
29-31rain on 70% of days33° 26°
Tap another date to change

200627mm
2007none
200815mm
20092mm
20104mm
201112mm
201212mm
201314mm
201411mm
201516mm
201654mm
20173mm
20182mm
201912mm
202023mm
20214mm
20223mm
20235mm
20243mm
202516mm
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
6 d 24 d
2007
7 d 22 d
2008
5 d 20 d
2009
6 d 22 d
2010
6 d 28 d
2011
5 d 20 d
2012
4 d 20 d
2013
4 d 19 d
2014
6 d 22 d
2015
7 d 19 d
2016
5 d 23 d
2017
6 d 20 d
2018
7 d 24 d
2019
6 d 24 d
2020
7 d 25 d
2021
1 d 20 d
2022
5 d 23 d
2023
7 d 27 d
2024
7 d 27 d
2025
3 d 24 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
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Rain days on trip
67566544675676715773

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

One row per year, one cell per day. 2013 had 19 rain days, 2010 had 28.

Hanoi through the year

MonthHighLowRain daysRainfall
January 20°15°8 days45mm
FebruaryGood 22°16°8 days33mm
MarchGood 24°19°10 days56mm
April 28°22°10 days100mm
May 32°25°17 days229mm
June 35°27°18 days220mm
July 34°27°21 days253mm
August 33°26°23 days321mm
September 32°25°19 days263mm
October 30°23°12 days154mm
November 27°20°7 days52mm
DecemberGood 22°16°7 days32mm

Common questions

Does it rain a lot in Hanoi in August?

Over the past 20 years August averaged 23 rain days (1 mm or more) out of 31. Individual years ran from 19 in the driest to 28 in the wettest. Rain for this month is not yet station-calibrated and may be overcounted.

What should I wear in Hanoi in August?

Days averaged 33°C and nights 26°C. Pack an umbrella, sandals that can get wet, T-shirts, sunscreen plus a hat, and insect repellent.

Is August a good time to visit Hanoi?

On warmth and rain days alone, Hanoi's easiest months were February, March and December. August ranked 10 of 12.

Is Hanoi humid in August?

Mean relative humidity was 84%, with about 31 muggy days (dew point of 20°C or more) in the month.