Climate risk in Patna
Bihar, India · 2.2M people in the urban area
What threatens Patna most
- Water stress
- High WRI Aqueduct
- Drought
- High WRI Aqueduct
- River flood
- 1.15 m in a 100-year flood
Tsunamis and landslides are not rated for a single city here. Climate risk profile of India
A 100-year river flood would stand 1.15 m deep in the centre of Patna.
Mumbai: Dry at the city centre point.
Patna's climate in the 2050s
2041-2060 compared with 1991-2020, moderate emissions
By the 2050s, Patna is projected to have the climate that Varanasi (India) has today.
+1.3°C
Mean temperature over the year
+1.5°C
Highest in the warmest month
+1.5°C
Lowest in the coldest month
+5%
Precipitation over the year
Under high emissions, Patna would have the climate that Varanasi (India) has today.
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How close the match is: 0.2 σ to the climate of Varanasi 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 Patna stands out
42.6°C
Hottest day of 2025
Mumbai: 35.4°C.
Higher than in 90% of the world's 630 large cities
71 days
Hot days in 2025, over 35 °C
Mumbai: 2 days.
Higher than in 87% of the world's 630 large cities
Hazards at Patna
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 | Patna | Among large cities | In India |
|---|---|---|---|
| Hot days in 2025, over 35 °C | 71 days | Among large cities: above 87% | In India: 30 of 50 |
| Tropical nights in 2025, over 20 °C | 231 days | Among large cities: above 79% | In India: 28 of 50 |
| Hottest day of 2025 | 42.6°C | Among large cities: above 90% | In India: 19 of 50 |
| Warming by 2050, moderate emissions | +1.3°C | Among large cities: above 9% | In India: 24 of 50 |
| Days with 20 mm of rain or more in 2025 | 18 days | Among large cities: above 79% | In India: 19 of 50 |
| River flood depth, 100-year event | 1.15 m | Among large cities: above 95% | In India: 4 of 50 |
| Coastal flood depth, 100-year event | Dry at the city centre point | ||
| Water stress | High (40-80%) | Among large cities: above 56% | In India: 30 of 50 |
| Drought risk | High | Among large cities: above 50% | In India: 23 of 49 |
| Earthquake shaking, once in 475 years | 0.53 m/s² | Among large cities: above 47% | In India: 27 of 50 |
| Land burned in an average year | 0% | ||
| Cyclone wind, once in 100 years | 0 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 Patna on the live map
See the hottest days around Patna on the live map
42.6°C © OpenStreetMap Large cities in India
- Mumbai
- Delhi
- Kolkata
- Chennai
- Bengaluru
- Hyderabad
- Amaravati
- Ahmedabad
- Howrah
- Pune
- Surat
- Kanpur
- Jaipur
- Lucknow
- Nagpur
- Indore
- Vadodara
- Bhopal
- Coimbatore
- Ludhiana
- Agra
- Kalyān
- Visakhapatnam
- Kochi
- Nashik
- Tirunelveli
- Meerut
- Faridabad
- Varanasi
- Ghaziabad
- Asansol
- Jamshedpur
- Madurai
- Jabalpur
- Rajkot
- Dhanbad
- Amritsar
- Warangal
- Prayagraj
- Srinagar
- Vijayawada
- Chhatrapati Sambhajinagar
- Bhilai
- Solapur
- Jodhpur
- Gwalior
- Ranchi
- Tiruchirappalli
- Kota
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Source: Criora (criora.com), based on ECMWF, NEX-GDDP-CMIP6, WRI, IPCC, GSHAP, GFED500
APA
Criora. (2026). Patna, India: climate risk profile [Data set]. Retrieved November 2, 2026, from https://criora.com/atlas/IND/patna BibTeX
@misc{criora_atlas_IND_patna_2026,
author = {{Criora}},
title = {Patna, India: climate risk profile},
year = {2026},
url = {https://criora.com/atlas/IND/patna},
urldate = {2026-11-02}
} Each reading stays under its source's terms; the sources are named on this page.
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