Chattogram in 2050: climate change in numbers
Chattogram has warmed 0.6 °C, comparing the last ten years (2016–2025) with 1951–1980 — slower than the world as a whole (+1.1 °C). By 2050, its climate is projected to feel like Douala, Cameroon today.
2050 = 2040–2059 average, intermediate emissions (SSP2-4.5), median of CMIP6 climate models. “Today” = 1991–2020. Model range for average temperature: 26.3–27.2 °C.
Chattogram: average annual temperature, 1950–2025 (°C)
1950 → 2025. Chattogram's warming stripes: each stripe is one year's average temperature.
What Chattogram's climate will feel like
Matching temperature, heat extremes, frost days and rainfall against the current climate of more than 1,000 large cities, Chattogram's 2050 climate is closest to Douala, Cameroon — about 9,000 km away.
| Chattogram today | Chattogram 2050 | Douala today | |
|---|---|---|---|
| Average temperature | 25.8 °C | 26.8 °C | 26.2 °C |
| Average daily high | 27.6 °C | 28.6 °C | 29.4 °C |
| Hottest day | 32 °C | 33 °C | 33 °C |
| Frost days | 0 | 0 | 0 |
| Rainfall | 2,764 mm | 2,924 mm | 3,179 mm |
A year in Chattogram, day by day
Each square is one day of the year; the coloured squares are the days that cross the threshold in an average year.
Days above 30 °C (86 °F) in Chattogram
Tropical nights in Chattogram (never cooler than 20 °C)
Dangerous-heat days in Chattogram (heat index ≥ 39 °C)
What changes by 2050
- The average temperature rises a further 1.1 °C compared with 1991–2020 (model range 0.5–1.5 °C).
- Days above 30 °C (86 °F) rise from about 41 a year (1991–2020) to about 108 by 2040–2059.
- Tropical nights — when it never cools below 20 °C — increase from about 293 to 314 a year, making heatwaves harder on health.
- Annual rainfall is projected to increase by about 8%, though precipitation projections are less certain than temperature.
Dangerous heat in Chattogram
Days a year when the heat index — temperature and humidity combined — reaches 39 °C, the level the US National Weather Service calls Danger: 1 in 1995–2014, 20 by 2050 and 64 by 2090 under intermediate emissions, or 200 by 2090 if emissions keep rising. See where dangerous heat spreads worldwide.
Sea level at Chattogram
The sea at Chattogram is projected to rise about 17 cm by 2050 and 50 cm by 2100 (IPCC AR6, intermediate emissions). See the full sea level projection for Chattogram.
Under high emissions
If emissions keep rising (SSP5-8.5), Chattogram would average 27.3 °C by 2040–2059, with a hottest day around 33 °C and 141 days above 30 °C (86 °F) a year. By mid-century the scenarios are still close; the choices made now mostly decide what happens after 2050 — see the world in 2050.
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Frequently asked questions
How hot will Chattogram be in 2050?
Under an intermediate emissions scenario (SSP2-4.5), Chattogram's average annual temperature in 2040–2059 is projected at about 26.8 °C (range 26.3–27.2 °C across climate models), compared with 25.8 °C in 1991–2020. The hottest day of a typical year reaches about 33 °C (91 °F).
Is Chattogram getting hotter?
Yes. The last ten years (2016–2025) averaged 0.6 °C warmer than 1951–1980 in Chattogram, slower than the global average of 1.1 °C over the same period (Copernicus ERA5).
Which city will Chattogram feel like in 2050?
By 2040–2059, Chattogram's climate is projected to resemble the climate of Douala, Cameroon today, based on temperature, heat extremes, frost and rainfall.
What would happen under high emissions?
Under a very high emissions scenario (SSP5-8.5), Chattogram's average temperature in 2040–2059 is projected at 27.3 °C and the hottest day at about 33 °C. The differences between scenarios grow much larger after 2050.
Sources: World Bank Climate Change Knowledge Portal (CMIP6 0.25°, ERA5 0.25°); Copernicus ERA5 reanalysis (C3S/ECMWF); NASA NEX-GDDP-CMIP6 (Thrasher et al. 2022); GeoNames
Method: Delta method: ERA5 1995–2014 + CMIP6 ensemble change 2040–2059 vs 1995–2014. Values are for the ~25 km grid cell containing the city and can differ from a single weather station, especially for coastal and mountain cities. Methodology · Download CSV
Licence: Derived from ERA5 (CC BY 4.0, Copernicus/ECMWF), CMIP6 via World Bank CCKP (CC BY-SA 4.0) and GeoNames (CC BY 4.0). City data on this site: CC BY-SA 4.0. · Generated 17 October 2026