Hanoi weather in July
July in Hanoi: sweltering, soaked, with poor air quality — not the time — 20 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#10 of 12 months in Hanoi · #1279 of 1413 destinations to visit in July · comfort 42/100 (tier F)
- Days
- 34°C
- Nights
- 27°C
- Wet days
- 20
- Sun
- 8.2 h
- Humidity
- 82%
- Daylight
- 13 h

What July is like in Hanoi
The wettest month, with typhoon remnants bringing days of rain and water standing in the streets.
monsoontyphoon
confidence: high
Traveller notes on Hanoi in July
Other months in Hanoi
Regulars are consistent that nothing is certain weather-wise this month - some years start cool and warm up gradually, others start warm before a cold surge from the north drops temperatures 4-5 degrees, then it warms again toward month's end. Our row backs that mild, genuinely humid read, 24.7C over 19.5C nights, with 59mm of rain across 9.9 days and humidity climbing to 80 percent, alongside a notably low sunshine average, just 4.3 hours a day, reflecting the persistent drizzly, overcast skies regulars describe. Regulars are consistent that despite the unpredictability, this counts among the better months to visit overall, temperatures genuinely mild compared with the brutal summer heat still months away. Layers and a light rain jacket remain the standard packing advice regardless of which version of the month arrives. The record: a 13.5 kph wind and AQI 120.
January here is not cold by the numbers and is cold to be in. Regulars describe grey, overcast, damp weeks with a drizzle so fine it barely wets your clothes, and the line worth carrying is that 15C feels nearer 10C because of the humidity - our row reads 20.8C by day and 15.4C at night at 77 percent, with only 4.2 hours of sun a day, the least of this city's year. Rain totals 57.5mm across 9.6 days, almost all of it that drizzle. Pack layers rather than a coat. Tet moves with the lunar calendar and often falls in late January, when the city empties and much of it closes - check the year. The record: AQI 111.
February in the north is cold by Vietnamese standards and grey rather than wet: regulars describe light drizzle and mist growing more frequent through the month, persistent but so fine it does not dampen clothing. Our row carries the proof in an unusual column - 4.2 hours of sun a day, the lowest in this collection, against only 42.1mm of rain across 8.3 days. Temperatures run 21.5C down to 16.3C, and visitors split between finding it unexpectedly cold and finding the end of the month fine for walking. Tet falls in this month and makes trains and flights difficult around it. The figure to check is AQI 104. The record: humidity 78 percent and a 12 kph wind.
Travelers report daytime temperatures typically in the low-to-high 30s C, with one visitor logging a 44C reading during their June trip. The forum's repeated point is that humidity, not the raw heat number, is what actually wears people down, on top of the city's constant noise and often poor air quality. June also opens the rainy season, though the heaviest downpours usually don't arrive until later in the month - most rain comes as short, very heavy thunderstorms that can hit at any hour. The commonly shared coping strategy: start early, retreat indoors with air conditioning or a pool from around noon to 3pm, and hydrate constantly.
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Hanoi climate normals — July
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Hanoi in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer break in Vietnam, school holidays in 5 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Hanoi's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherHanoi's weather peaks December–February.
July coincides with Typhoon season.
Best weatherFair weatherToughest weather
What's on in Hanoi in July
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Lotus on West Lake
1 Jun – 15 Jul · usuallyWildflowers & bloomsThe ponds off West Lake open at first light and are picked out by mid-morning, and the tea scented with them is sold for the rest of the year. Photographers get there before six.
- Hazard
Typhoon season
1 Jun – 15 Oct · usuallyThe Vietnamese season runs June to November and the north takes its share mostly between July and September, when remnants sit over the delta and leave water standing in the streets for days. Source ↗
- Season
Wet season
MonsoonRisk20 rainy days and about 250 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Hanoi — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Hanoi?
Hanoi in July — FAQ
- Is July a good time to visit Hanoi?
- July in Hanoi: sweltering, soaked, with poor air quality — not the time — 20 rainy days. It ranks #10 of 12 months for Hanoi on SeasonMap's comfort score (42/100).
- What is the weather like in Hanoi in July?
- In July, Hanoi averages a daily high of 34°C and a low of 26.9°C, with about 250.2 mm of rain over roughly 20.4 rainy days.
- What is the air quality in Hanoi in July?
- Hanoi has a mean US Air Quality Index of about 104 in July.
Within 300 km: Ha Long's Northern rain season around 15 May – 30 Sep.