Similar Climates › City Pairings › Hong Kong ≈ Hanoi

City Pairings

🇭🇰 Hong Kong’s climate twin is 🇻🇳 Hanoi, Vietnam

fair match

Hong Kong, Hong Kong and Hanoi, Vietnam are a fair climate match — 872 km (542 mi) apart. Hong Kong is Köppen zone Cwa; Hanoi is Cwa.

See Hong Kong on the interactive map →

What to expect

Hong Kong and Hanoi both sit in the dry-winter subtropical (Cwa) zone, so their seasonal arcs line up. They sit only about 872 km (542 mi) apart — a short hop on the atlas for a climate match this close.

It is a fair match — close on the main numbers, with a few seasonal quirks between Hong Kong and Hanoi. Temperatures stay tight: January means match within half a degree; July within half a degree. Rainfall shifts more: Hanoi is 85 mm drier in July.

Sunshine: Hanoi averages 6.4 hours a day across the two months vs 9.1 in Hong Kong (2.7 h/day less; January 4.1 h vs 7.8 h, July 8.7 h vs 10.4 h). Air quality: mean PM2.5 is 38 µg/m³ in Hanoi vs 27 in Hong Kong (higher by 11 µg/m³). Dew points differ modestly (January 13°C vs 10°C; July 25°C vs 25°C).

January & July climate

January & July · °C and mm

Hong KongHanoi
January
Temp
19° / 15°
20° / 14°
Rain
33 mm
19 mm
Dew
10°
13°
PM2.5
37.5 µg/m³
44.3 µg/m³
Sun
7.8 h
4.1 h
July
Temp
32° / 27°
33° / 26°
Rain
375 mm
290 mm
Dew
25°
25°
PM2.5
16.7 µg/m³
32.6 µg/m³
Sun
10.4 h
8.7 h

Compare Hong Kong and Hanoi month by month on the interactive map →

See Hanoi's climate twin on its own page.

Frequently asked questions

What place has a climate like Hong Kong?

On Similar Climates, Hanoi, Vietnam is the closest distant match for Hong Kong, Hong Kong — scored fair, about 872 km (542 mi) away.

How far is Hong Kong from its climate twin?

Hong Kong and Hanoi are separated by roughly 872 km (542 mi) on the great-circle route.

Do Hong Kong and Hanoi have their seasons at the same time?

Yes — both cities are in the same hemisphere, so summer and winter fall in the same calendar months.

Do Hong Kong and Hanoi share a Köppen climate zone?

Yes — both are dry-winter subtropical (Cwa).

What is the climate like in Hong Kong?

Hong Kong has a dry-winter subtropical climate (Cwa). January averages a high of 19°C and a low of 15°C with 33 mm of rain; July averages 32°C / 27°C and 375 mm.

How sunny is Hong Kong?

Hong Kong averages about 7.8 hours of sunshine a day in January and 10.4 hours in July.

What is the air quality like in Hong Kong?

January PM2.5 averages about 37.5 µg/m³ (US AQI 105); July averages 16.7 µg/m³ (US AQI 65).

Other close climate matches for Hong Kong: Papeete (loose), Apia (loose), Port Vila (loose).

More dry-winter subtropical cities

All dry-winter subtropical (Cwa) cities on Similar Climates →

Explore Hong Kong and Hanoi on the interactive map →

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