Monthly weather overview

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A quick, year-round overview of monthly and seasonal weather in Hanoi. Use this page to get a feel for which months and seasons match your travel style.

Hanoi weather at a glance

  • Hanoi’s comfort is shaped not only by hot humid summers, but also by surprisingly cool and damp winters. The same temperature can feel very different depending on humidity, wind, and sun.
  • A common pattern is: hot/humid season with frequent showers (May–Sep), lighter-feeling autumn (Oct–Nov), cool/damp winter (Dec–Feb), and variable spring (Mar–Apr).
  • For walking-heavy plans (Old Quarter, Hoan Kiem Lake), comfort often depends on how long you stay damp—summer is about quick-dry and breaks; winter is about layers.
  • Summer rain can be short and intense, pausing movement. A water-safe pouch can feel more practical than an umbrella on some days.
  • In winter, indoor heating can be limited in some places, creating a persistent cool-damp feel both inside and outside.
Dec · Jan · Feb

Winter (cool + damp): humidity often defines the chill

Avg low 14–17°C / high 20–23°C · Rainy days: 4–10 / 15–45 mm

  • On cloudy days, it can feel notably cooler and clammy.
  • Light knit/cardigan layers are useful.
  • Sitting outdoors for long stretches can feel chilly.

Suggested outfits

  • · Light layers (cardigan/windbreaker)
  • · Long pants/socks
  • · Umbrella + water-safe pouch option

A note for travelers

Hanoi winter is less about deep cold and more about cool dampness—thin layers usually work best.

Mar · Apr · Oct · Nov

Shoulder seasons (variable): warm, then suddenly breezy

Avg low 18–23°C / high 25–31°C · Rainy days: 4–12 / 40–120 mm

  • Some days shift noticeably within a day.
  • Rain can bring a heavier, more humid feel.
  • Often great for walking—layers and a small umbrella help.

Suggested outfits

  • · T-shirt + light outer layer
  • · Breathable shoes
  • · Compact umbrella/water-safe pouch

A note for travelers

In shoulder months, changing layers beats committing to one outfit all day.

May · Jun · Jul · Aug · Sep

Summer (hot + humid + showers): sweat, rain, and humidity shape the day

Avg low 25–27°C / high 31–35°C · Rainy days: 12–22 / 150–320 mm (often peaking Aug–Sep)

  • Heat can feel heavy rather than sharp.
  • Short intense showers can pause movement and soak clothes fast.
  • If you stay damp, strong AC can feel worse—thin layers help.

Suggested outfits

  • · Quick-dry fabrics
  • · Water-safe pouch
  • · Footwear you can get wet in

A note for travelers

Summer often works best with a pause-and-move rhythm around showers.

Want detailed monthly weather?

Pick a month below to see detailed average temperatures, rainfall, outfit ideas, and travel tips.

Explore Hanoi

These pages are connected so you can compare conditions and decide for yourself.

Hanoi monthly weather overview — seasons & best time to visit | CityWeather | CityWeather