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One page of sourced numbers per city: what a day costs, what the travel advisory says, and which months score best on the weather.

Data: GeoNames, Open-Meteo, World Bank, US State Department, UK FCDO.

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© 2026 Travel City Index. Every number on this site comes from a dataset named on the page that shows it.
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  4. /Best time to visit
Weather and seasons in Hanoi, Vietnam

Best time to visit Hanoi: month-by-month weather (2026)

The highest-scoring months in Hanoi are Mar, Oct, Nov and Dec.

Best months

Mar, Oct, Nov and Dec

Peak season

Mar, Aug, Oct, Nov and Dec

Off season

Jun, Jul and Sep

Monthly Temperatures (°C)

Monthly Rainfall (mm)

Month-by-Month Guide

Temperature, rainfall and sunshine are measured. The visit score below is derived from those three (design spec §5.3)estimate.

Jan

Temp: 13.8°C – 21.7°C

Rain: 45mm

Sunshine: 5.5h/day

Visit score: 6.9/10

Feb

Temp: 16.2°C – 22.8°C

Rain: 47mm

Sunshine: 3.3h/day

Visit score: 7.9/10

Mar

Best

Temp: 18.3°C – 26°C

Rain: 59mm

Sunshine: 4.5h/day

Visit score: 8.2/10

Apr

Temp: 22.9°C – 30.9°C

Rain: 84mm

Sunshine: 6.6h/day

Visit score: 6.3/10

May

Temp: 24.6°C – 31.5°C

Rain: 236mm

Sunshine: 8h/day

Visit score: 5.7/10

Jun

Temp: 26.2°C – 32.8°C

Rain: 432mm

Sunshine: 8.1h/day

Visit score: 3.7/10

Jul

Temp: 26.3°C – 33.1°C

Rain: 358mm

Sunshine: 9.4h/day

Visit score: 3.8/10

Aug

Temp: 25.8°C – 32°C

Rain: 370mm

Sunshine: 7.9h/day

Visit score: 5.7/10

Sep

Temp: 24.9°C – 30.9°C

Rain: 435mm

Sunshine: 7.4h/day

Visit score: 5.6/10

Oct

Best

Temp: 22.5°C – 29.4°C

Rain: 142mm

Sunshine: 8.3h/day

Visit score: 8.2/10

Nov

Best

Temp: 18.7°C – 26.3°C

Rain: 57mm

Sunshine: 7.4h/day

Visit score: 8.9/10

Dec

Best

Temp: 15.9°C – 22.8°C

Rain: 22mm

Sunshine: 5.7h/day

Visit score: 9.4/10

When to go, and when not to

The months with the highest visit scores in the climate data are March, October, November, and December. These months combine cooler or more moderate temperatures with comparatively low rainfall, particularly December, which has the lowest monthly rainfall of the year alongside cooler highs and lows.

The trade-off comes in the peak season months of March, August, October, November, and December, when accommodation and tours see more demand even though the weather is favorable. The wettest and hottest conditions occur from May through September, with June, July, and September recording the heaviest rainfall of the year, making outdoor sightseeing less comfortable even though these months fall in the cheaper off-season window.

Season Guide

Spring

March – May

Mild temperatures and blooming gardens. A great time for sightseeing with fewer crowds than summer.

Packing tips

  • · Light layers
  • · Rain jacket
  • · Comfortable walking shoes

Summer

June – August

Warmest months with the longest days. Peak tourist season in most destinations.

Packing tips

  • · Sunscreen
  • · Hat
  • · Light clothing
  • · Refillable water bottle

Autumn

September – November

Cooling temperatures and autumn foliage. Shoulder season with good deals on accommodations.

Packing tips

  • · Medium layers
  • · Sweater
  • · Waterproof jacket

Winter

December – February

Coldest months with shorter days. Holiday markets and winter activities in many cities.

Packing tips

  • · Warm coat
  • · Scarf and gloves
  • · Thermal layers
  • · Waterproof boots

Keep reading

More on Hanoi

  • Back to Hanoi
  • Best cities to visit in March
  • Best cities to visit in October
  • Best cities to visit in November
  • Best cities to visit in December

Sources

  • GeoNames city database — CC BY 4.0, fetched September 14, 2026
  • Open-Meteo climate archive — CC BY 4.0, fetched September 21, 2026

AI-written interpretation reviewed against the data above — claude-sonnet-5, generated September 21, 2026. Every number on this page comes from a dataset named here; the formulas are public.