What to Wear in Hanoi in October
Hanoi in October: 30°C / 86°F afternoons, 22°C / 72°F nights, rain on about 8 days, and 18 afternoons that still reach 30°C.
- Pale yellow cotton button-down — 29.8°C / 86°F afternoons at humidity near 76%
- Olive drawstring wide-leg trousers — about 18 days reach 30°C, and a wide leg moves air
- Cream canvas sneakers — rain on about 8 days, so canvas dries between showers
- Braided straw sun hat — the noon sun still stands about 60° up at 21°N
- Raffia crossbody — both hands free for crossing a street of motorbikes
- Ivory cotton cardigan — for the air-conditioning, not for a 22°C / 72°F night
- A sweater — the average night is 22.2°C, and it stays in the case
- A hooded rain shell — about 104mm on 7.6 days, a third less than September
- Jeans — denim clings on 18 afternoons at 30°C or more
- An autumn wardrobe for an autumn date — Hanoi's October is still summer by day
Pack summer clothes and one thin layer. NOAA NCEI's record for Hanoi's WMO station 48820 puts the October afternoon at 29.8°C / 86°F and the night at 22.2°C / 72°F, with about 104mm of rain on 7.6 days, down from 158mm on 11 days in September. Heat is what stays: about 18 afternoons still reach 30°C at humidity near 76%, so linen and cotton remain the fabrics. Rain is what goes, and that puts canvas shoes and a straw bag back in the case. The second half of the month runs nearly two degrees cooler by day, 28.9°C against 30.7°C. Sunset moves from 5:45pm on the 1st to 5:22pm on the 31st. Tuesday 20 October is Vietnamese Women's Day.
September in Hanoi is still the rainy season. October keeps most of September's heat and loses a third of its rain, so you dress for summer and pack one cardigan.
The capsule
01Pale yellow oversized cotton button-downWear it open over the white blouse at eight and buttoned on its own by noon. An oversized cotton shirt with a chest pocket and the cuffs turned back moves air on the 18 October afternoons that reach 30°C, and pale yellow reflects the sun a navy or black shirt soaks up. Long sleeves also cover your forearms on the back of a motorbike taxi at midday.
02White fitted long-sleeve blouse, point collarPack one shirt that looks pressed after dark. A white blouse, fitted through front darts, with a point collar and buttoned cuffs, tucks into the straw skirt for a Women's Day dinner on 20 October and into the olive trousers for a morning at the Temple of Literature. After sunset, at 22°C / 72°F, long sleeves are comfortable rather than hot.
03Olive drawstring wide-leg trousersOne pair of trousers for the month. A wide leg and a drawstring waist move air on a 29.8°C / 86°F afternoon at humidity near 76%, where jeans cling by ten. Olive hides the grey film a day of Old Quarter traffic leaves on a pale hem, and it sits under both the yellow shirt and the white blouse.
04Rice-straw yellow linen midi skirt, A-lineThis is the dinner piece, for Women's Day on 20 October above all. A rice-straw linen A-line midi, flat in front with an elasticated back, takes the white blouse tucked in, falls below the knee for a seated meal and stays cool on a 22°C / 72°F evening. Straw rather than white, because the blouse already carries the brightness and white on white shows every splash from a wet kerb.
05Cream canvas low-top sneakersOctober is the month canvas comes back into the bag. Rain falls on about 8 days, against 11 in September, so plain cream canvas low-tops dry out between showers instead of staying damp all week. Closed toes earn their place on pavements shared with parked motorbikes, and a flat rubber sole handles the stone paths inside the Temple of Literature.
06Raffia half-moon crossbody, tan leather flapWorn across the body, so both hands are free when you cross a street of scooters at a steady walk. A raffia bag with a tan leather flap and a knotted strap belongs to a dry month: with rain on about 8 days the straw seldom gets soaked, and it matches the hat. Small is the point, since a tote swings into passing handlebars.
07Natural braided-straw wide-brim hat, tan bandHanoi sits at 21°N, and in mid-October the noon sun still stands about 60° above the horizon. A braided wheat-straw hat with a wide flat brim and a tan suede band shades your face, ears and neck on a 10am walk around Hoàn Kiếm Lake, where a cap leaves the back of your neck bare. Its rice-straw colour is the one this capsule is built around, and the olive trousers keep it from reading as beachwear.
08Ivory cotton crew-neck cardiganPack one knit, and make it cotton. On NOAA NCEI's record the average October night is 22.2°C / 72°F, which is shirt weather outdoors, so this cardigan is for cinemas, cafés and taxis with the air-conditioning turned up. Buttoned over the white blouse, it also carries the Women's Day dinner once the sun has set at about 5:30pm.
Day to night
Pale yellow button-down, sleeves rolled · olive drawstring trousers · cream canvas sneakers · straw sun hat · raffia crossbody. Hoàn Kiếm Lake at 6:30am before the heat builds, the Temple of Literature at eight, coffee in the Old Quarter by ten.
White blouse tucked into the rice-straw midi · ivory cardigan over the shoulders · cream canvas sneakers · raffia crossbody. Sunset at about 5:30pm, then dinner in the French Quarter and on Tuesday 20 October a Women's Day table booked ahead.
A suggested look — pale yellow button-down shirt, olive wide-leg trousers, cream canvas sneakers, natural straw wide-brim hat.
What to avoid
- A sweater — a 22.2°C average night, and a cotton cardigan covers the air-conditioning
- A hooded rain shell — about 104mm on 7.6 days, a third less than September
- Jeans or heavy dark cotton — 18 afternoons at 30°C or more, humidity near 76%
- Daylight plans after 5:30pm — sunset reaches 5:22pm by 31 October
- Dressing for the calendar — the October afternoon averages 29.8°C / 86°F
Frequently asked questions
Per NOAA NCEI's global summary of the day for WMO station 48820, which NOAA files as Noi Bai International, October's average daily maximum is 29.8°C / 86°F and the average minimum 22.2°C / 72°F, across the 30 Octobers from 1991 to 2020. About 18 days reach 30°C. Rain averages 104mm on 7.6 days with at least 0.01in, counted from the 21 Octobers with daily rain reports, against 158mm on 11 days in September. Mean relative humidity, computed from NOAA's daily dew points, is close to 76%. Daylight shrinks from 11h 58m on 1 October to 11h 24m on the 31st. For the week you travel, the National Centre for Hydro-Meteorological Forecasting (NCHMF) keeps a Hà Nội forecast page.
A pale yellow oversized cotton button-down, a white fitted long-sleeve blouse, olive drawstring wide-leg trousers, a rice-straw linen midi skirt, cream canvas low-top sneakers, a raffia crossbody, a braided straw sun hat and an ivory cotton cardigan. That covers a 29.8°C / 86°F afternoon at the Temple of Literature, a 22°C / 72°F evening by Hoàn Kiếm Lake and the air-conditioning in between. Leave the sweater, the rain shell and the jeans at home. Every piece answers one question: is it cool enough for 18 afternoons at 30°C?
Tuesday 20 October 2026, the anniversary of the Vietnam Women's Union's founding on 20 October 1930. The day is marked with flowers and dinners out rather than a day off, so book a table if you want one. For that dinner, wear the white fitted blouse tucked into the rice-straw midi skirt with the ivory cardigan over your shoulders: covered, pressed and cool enough for a 22°C / 72°F evening. The sun sets at about 5:29pm, so the straw hat stays at the hotel, and the canvas sneakers go with you: NOAA NCEI's record puts rain on only about 8 days in the month.
Late October, if heat is the problem. On NOAA NCEI's record the first half of the month averages 30.7°C by day with about 10 days at 30°C or more; the second half averages 28.9°C with about 7. Rain barely shifts between the halves, about 56mm before the 16th and 48mm after. Early October keeps more light, 11h 58m on the 1st against 11h 24m on the 31st, while late October holds Women's Day on the 20th. Pack the same capsule for either half; late in the month the cardigan comes out after dinner as well as indoors.
October keeps most of the heat and loses a third of the rain. From the same NOAA NCEI record, September averages 32.0°C by day and 24.8°C at night with 158mm on 11 days; October drops to 29.8°C and 22.2°C with 104mm on 7.6 days. Hot afternoons thin out, from about 25 days at 30°C or more to about 18, and humidity falls from near 81% to near 76%. In September you pack for rain and heat together. In October the rain shell leaves the case and canvas shoes go in.
Summer clothes, worn a little neater as the heat eases: short sleeves or a loose long-sleeved shirt, wide trousers or a midi skirt, flat closed shoes, and a light layer carried for air-conditioning rather than worn. Dress for the numbers rather than the season's name: 29.8°C / 86°F afternoons and humidity near 76% mean nothing thick, nothing dark and nothing tight, and a 22°C / 72°F night means one cotton knit at most. A fitted white blouse over a midi skirt or wide trousers covers anything from a temple to a dinner.
Sources
- NOAA NCEI — 1991–2020 climate normals, Hanoi (WMO station 48820) stationa station of Viet Nam's national network, filed by NOAA as Noi Bai International; NOAA NCEI computed these figures from its 48820099999 global-summary-of-the-day record: 30 complete Octobers for temperature, and the 21 Octobers of 1991–2011 that carry daily rain reports for precipitation (a rain day is ≥0.01 in). Recorded per month because this city's May–August pages are sourced differently.
- NOAA NCEI — Global Summary of the Day, Hanoi (WMO station 48820, filed by NOAA as Noi Bai International, 48820099999), 1991–2020 — accessed 2026-09-29
- Infoclimat — Ha Noi, WMO station 48820 (VVNB): station record page — accessed 2026-09-29
- National Centre for Hydro-Meteorological Forecasting (NCHMF) — Thời tiết Hà Nội (Hanoi forecast page) — accessed 2026-09-29
- Vietnam Women's Union — VWU in brief (founded 20 October 1930; 20 October is Vietnamese Women's Day) — accessed 2026-09-29
