Climate risk in Chittagong
Chittagong, Bangladesh · 4.5M people in the urban area
What threatens Chittagong most
- Water stress
- High WRI Aqueduct
- Earthquake
- High GSHAP
- Cyclone wind
- Category 3 once in 100 years IRIS
Tsunamis and landslides are not rated for a single city here. Climate risk profile of Bangladesh
Chittagong had 47 days with 20 mm of rain or more in 2025.
Dhaka: 26 days.
The highest of the 3 large cities in Bangladesh.
Chittagong's climate in the 2050s
2041-2060 compared with 1991-2020, moderate emissions
By the 2050s, Chittagong's climate will still be more like its own today than any other large city's. The nearest other is Dhaka (Bangladesh).
+1.2°C
Mean temperature over the year
+1°C
Highest in the warmest month
+1.4°C
Lowest in the coldest month
+2%
Precipitation over the year
Under high emissions, Chittagong would stay nearest its own climate today.
Its own climate today is 6.9 σ away. How close the match is: 11.5 σ to the climate of Dhaka 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 Chittagong stands out
2.83 m/s²
Earthquake shaking, once in 475 years
Dhaka: 1.35 m/s².
The highest of the 3 large cities in Bangladesh.
Higher than in 88% of the world's 627 large cities
298 days
Tropical nights in 2025, over 20 °C
Dhaka: 247 days.
The highest of the 3 large cities in Bangladesh.
Higher than in 87% of the world's 630 large cities
Hazards at Chittagong
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 | Chittagong | Among large cities | In Bangladesh |
|---|---|---|---|
| Hot days in 2025, over 35 °C | 0 days | ||
| Tropical nights in 2025, over 20 °C | 298 days | Among large cities: above 87% | In Bangladesh: 1 of 3 |
| Hottest day of 2025 | 32.6°C | Among large cities: above 19% | In Bangladesh: 3 of 3 |
| Warming by 2050, moderate emissions | +1.4°C | Among large cities: above 11% | In Bangladesh: 1 of 3 |
| Days with 20 mm of rain or more in 2025 | 47 days | Among large cities: above 99% | In Bangladesh: 1 of 3 |
| River flood depth, 100-year event | Dry at the city centre point | ||
| Coastal flood depth, 100-year event | Dry at the city centre point | ||
| Sea level rise by 2050, moderate emissions | 249 mm | Among large cities: above 82% | In Bangladesh: 1 of 3 |
| Water stress | High (40-80%) | Among large cities: above 56% | In Bangladesh: 2 of 3 |
| Drought risk | Medium-High | Among large cities: above 13% | In Bangladesh: 3 of 3 |
| Earthquake shaking, once in 475 years | 2.83 m/s² | Among large cities: above 88% | In Bangladesh: 1 of 3 |
| Land burned in an average year | 0% | ||
| Cyclone wind, once in 100 years | 52.46 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 Chittagong on the live map
See the earthquake hazard around Chittagong on the live map
2.83 m/s² © OpenStreetMap Large cities in Bangladesh
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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). Chittagong, Bangladesh: climate risk profile [Data set]. Retrieved November 2, 2026, from https://criora.com/atlas/BGD/chittagong BibTeX
@misc{criora_atlas_BGD_chittagong_2026,
author = {{Criora}},
title = {Chittagong, Bangladesh: climate risk profile},
year = {2026},
url = {https://criora.com/atlas/BGD/chittagong},
urldate = {2026-11-02}
} Each reading stays under its source's terms; the sources are named on this page.
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