Climate risk in Onitsha
Anambra, Nigeria · 1.6M people in the urban area
What threatens Onitsha most
- Drought
- High WRI Aqueduct
- Water stress
- Low WRI Aqueduct
- Earthquake
- Low GSHAP
Tsunamis and landslides are not rated for a single city here. Climate risk profile of Nigeria
Onitsha had 139 days over 35 °C in 2025.
Lagos: 0 days.
Onitsha's climate in the 2050s
2041-2060 compared with 1991-2020, moderate emissions
By the 2050s, Onitsha is projected to have a climate no large city has today. The nearest, Jakarta (Indonesia), is far from it.
Such a climate exists today, though not in any large city. Brazil: the place on the map
+1.3°C
Mean temperature over the year
+1.3°C
Highest in the warmest month
+1.4°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 Jakarta (Indonesia).
Share this comparison
How close the match is: 8.3 σ to the climate of Jakarta 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 Onitsha stands out
365 days
Tropical nights in 2025, over 20 °C
Kano: 213 days.
Higher than in 93% of the world's 630 large cities
40.4°C
Hottest day of 2025
Lagos: 32.6°C.
Higher than in 80% of the world's 630 large cities
Hazards at Onitsha
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 | Onitsha | Among large cities | In Nigeria |
|---|---|---|---|
| Hot days in 2025, over 35 °C | 139 days | Among large cities: above 95% | In Nigeria: 5 of 14 |
| Tropical nights in 2025, over 20 °C | 365 days | Among large cities: above 93% | In Nigeria: 1 of 14 |
| Hottest day of 2025 | 40.4°C | Among large cities: above 80% | In Nigeria: 4 of 14 |
| Warming by 2050, moderate emissions | +1.6°C | Among large cities: above 27% | In Nigeria: 13 of 14 |
| Days with 20 mm of rain or more in 2025 | 11 days | Among large cities: above 57% | In Nigeria: 4 of 14 |
| 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 (<10%) | Among large cities: above 0% | In Nigeria: 4 of 14 |
| Drought risk | High | Among large cities: above 50% | In Nigeria: 2 of 13 |
| Earthquake shaking, once in 475 years | 0.15 m/s² | Among large cities: above 17% | In Nigeria: 1 of 14 |
| 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 Onitsha on the live map
See the tropical nights around Onitsha on the live map
365 days © OpenStreetMap Large cities near Onitsha
- Benin City · Nigeria
- Aba · Nigeria
- Port Harcourt · Nigeria
- Ikare · Nigeria
Large cities in Nigeria
Cite or embed
Cite this page
In a line
Source: Criora (criora.com), based on ECMWF, NEX-GDDP-CMIP6, WRI, IPCC, GSHAP, GFED500
APA
Criora. (2026). Onitsha, Nigeria: climate risk profile [Data set]. Retrieved November 2, 2026, from https://criora.com/atlas/NGA/onitsha BibTeX
@misc{criora_atlas_NGA_onitsha_2026,
author = {{Criora}},
title = {Onitsha, Nigeria: climate risk profile},
year = {2026},
url = {https://criora.com/atlas/NGA/onitsha},
urldate = {2026-11-02}
} Each reading stays under its source's terms; the sources are named on this page.
Embed on your site
<iframe src="https://criora.com/embed/atlas/NGA/onitsha" title="Onitsha, Nigeria: climate risk, by Criora" width="100%" height="140" loading="lazy" style="max-width:420px;border:0"></iframe> <p><a href="https://criora.com/atlas/NGA/onitsha?ref=embed" rel="nofollow">Source: Criora</a></p>
Free, no account needed. The widget has no script and shows the figures of this page. Keep its link to the source.