Climate Zone Map

Hanoi climate zone

Hanoi, Vietnam: Cwa, humid subtropical with dry winter, in 1991 to 2020.

World map of Köppen-Geiger climate zones, 1991 to 2020Tap or scroll to load the interactive map

Period shown on the map
80%

Köppen-Geiger classes are based on 30-year averages of temperature and rain, not on the weather on any one day.

Key

A: Tropical

  • Af Tropical rainforest
  • Am Tropical monsoon
  • Aw Tropical savannah

B: Arid

  • BWh Hot desert
  • BWk Cold desert
  • BSh Hot semi-arid (steppe)
  • BSk Cold semi-arid (steppe)

C: Temperate

  • Csa Hot-summer Mediterranean
  • Csb Warm-summer Mediterranean
  • Csc Cold-summer Mediterranean
  • Cwa Humid subtropical with dry winter
  • Cwb Subtropical highland (dry winter)
  • Cwc Cold subtropical highland (dry winter)
  • Cfa Humid subtropical
  • Cfb Temperate oceanic
  • Cfc Subpolar oceanic

D: Cold (continental)

  • Dsa Hot-summer continental with dry summer
  • Dsb Warm-summer continental with dry summer
  • Dsc Subarctic with dry summer
  • Dsd Subarctic with dry summer and very cold winter
  • Dwa Hot-summer continental with dry winter
  • Dwb Warm-summer continental with dry winter
  • Dwc Subarctic with dry winter
  • Dwd Subarctic with dry winter and very cold winter
  • Dfa Hot-summer humid continental
  • Dfb Warm-summer humid continental
  • Dfc Subarctic (boreal)
  • Dfd Subarctic with very cold winter

E: Polar

  • ET Tundra
  • EF Ice cap (frost)

How to read the map. Each colour is a Köppen-Geiger climate class. The first letter is the major group (A tropical, B arid, C temperate, D cold, E polar); the other letters say how dry it is and how warm or cold. Tap anywhere to see the class under that spot in 1901 to 1930, 1991 to 2020 and, under three emissions scenarios, 2071 to 2099. The codes and names are always given in words, because colour alone is hard to tell apart for some people.

The climate of Hanoi

Cwa Humid subtropical with dry winter. Hot, wet summers and dry, mild winters. A monsoon-influenced subtropical climate. Most of the rain falls in the hot summer, and winters are noticeably drier.

Hanoi is north of the equator, so summer falls in June to August and winter in December to February. The 1901 to 1930 map puts Hanoi in the same zone, Cwa.

Hanoi: then, now and by 2100

MapClimate zoneCompared with now
1901 to 1930Cwa Humid subtropical with dry winterSame as now
1991 to 2020 (now)Cwa Humid subtropical with dry winter-
2071 to 2099, SSP1-2.6 (low emissions)Am Tropical monsoonDifferent from now
2071 to 2099, SSP2-4.5 (middle of the road)Aw Tropical savannahDifferent from now
2071 to 2099, SSP5-8.5 (high emissions)Aw Tropical savannahDifferent from now

The 2071 to 2099 rows are model projections under three emissions scenarios, not forecasts. The 1901 to 1930 row is a reconstruction. All come from Beck et al. (2023).

Under the middle-of-the-road scenario (SSP2-4.5), the model puts Hanoi in Aw (tropical savannah) in 2071 to 2099, instead of Cwa now. Under the high-emissions scenario (SSP5-8.5) it is Aw (tropical savannah).

Cities with the same climate as Hanoi

Other big cities that are Cwa (humid subtropical with dry winter) in 1991 to 2020, at most two per country:

Where Hanoi's future climate exists today

In the SSP2-4.5 map for 2071 to 2099, Hanoi is Aw. These cities are Aw in 1991 to 2020, so they give a rough idea of the future climate (the real conditions would differ in many ways).

More

Population of Hanoi from GeoNames: 8,053,663 (rank 39 in our list of 1,000). Climate data: Beck et al. (2023), CC BY 4.0. Data sources and licences.

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