Climate risk in Hanoi
Hanoi, Vietnam · 4.4M people in the urban area
What threatens Hanoi most
- Drought
- High WRI Aqueduct
- Water stress
- Low-Medium WRI Aqueduct
- Cyclone wind
- Category 1 once in 100 years IRIS
Tsunamis and landslides are not rated for a single city here. Climate risk profile of Vietnam
Hanoi had 27 days with 20 mm of rain or more in 2025.
Ho Chi Minh City: 17 days.
Hanoi's climate in the 2050s
2041-2060 compared with 1991-2020, moderate emissions
By the 2050s, Hanoi's climate comes closest to that of Haikou (China) today, though no large city matches it well.
No place on Earth matches it well today either. China: the place on the map
+1.6°C
Mean temperature over the year
+1.5°C
Highest in the warmest month
+1.6°C
Lowest in the coldest month
+2%
Precipitation over the year
Under high emissions, no large city has such a climate today; the nearest is Haikou (China).
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How close the match is: 2.9 σ to the climate of Haikou today, where under 2 is close and over 4 is no match (Mahony et al. 2017). 3 of 3 climate model runs name the same city. Seasonal temperature and rain are compared, not extremes, city heat or the sea.
Where else Hanoi stands out
228 days
Tropical nights in 2025, over 20 °C
Ho Chi Minh City: 365 days.
Higher than in 79% of the world's 630 large cities
39.8°C
Hottest day of 2025
Ho Chi Minh City: 37.1°C.
The highest of the 5 large cities in Vietnam.
Higher than in 76% of the world's 630 large cities
Hazards at Hanoi
Read at the city's centre and compared with the Atlas's 630 large cities. Moderate emissions is the IPCC's scenario SSP2-4.5.
| Hazard | Hanoi | Among large cities | In Vietnam |
|---|---|---|---|
| Hot days in 2025, over 35 °C | 29 days | Among large cities: above 71% | In Vietnam: 1 of 5 |
| Tropical nights in 2025, over 20 °C | 228 days | Among large cities: above 79% | In Vietnam: 5 of 5 |
| Hottest day of 2025 | 39.8°C | Among large cities: above 76% | In Vietnam: 1 of 5 |
| Warming by 2050, moderate emissions | +1.9°C | Among large cities: above 43% | In Vietnam: 1 of 5 |
| Days with 20 mm of rain or more in 2025 | 27 days | Among large cities: above 94% | In Vietnam: 2 of 5 |
| River flood depth, 100-year event | Dry at the city centre point | ||
| Coastal flood depth, 100-year event | Dry at the city centre point | ||
| Water stress | Low-Medium (10-20%) | Among large cities: above 30% | In Vietnam: 1 of 5 |
| Drought risk | High | Among large cities: above 50% | In Vietnam: 1 of 5 |
| Earthquake shaking, once in 475 years | 0.31 m/s² | Among large cities: above 31% | In Vietnam: 2 of 5 |
| Land burned in an average year | 0% | ||
| Cyclone wind, once in 100 years | 41 m/s |
Flood depth is read in a single 1 km cell at the city's centre, in today's climate. Other parts of the city can still flood. The country page names the deepest point near a coastal city in 2080, so its figure can be higher. See how deep a river flood reaches around Hanoi on the live map
See the tropical nights around Hanoi on the live map
228 days © OpenStreetMap Large cities in Vietnam
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Source: Criora (criora.com), based on ECMWF, NEX-GDDP-CMIP6, WRI, IPCC, GSHAP, GFED500, IRIS: the Imperial College Storm Model dataset
APA
Criora. (2026). Hanoi, Vietnam: climate risk profile [Data set]. Retrieved November 2, 2026, from https://criora.com/atlas/VNM/hanoi BibTeX
@misc{criora_atlas_VNM_hanoi_2026,
author = {{Criora}},
title = {Hanoi, Vietnam: climate risk profile},
year = {2026},
url = {https://criora.com/atlas/VNM/hanoi},
urldate = {2026-11-02}
} Each reading stays under its source's terms; the sources are named on this page.
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