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Owerri, Nigeria climate
Am Tropical monsoon
Owerri has a remarkably steady tropical climate (Tropical monsoon, Köppen Am). The hottest month is March with an average daily high near 87°F, while the coldest is January averaging around 69°F at night. Precipitation totals about 95 inches a year and is strongly seasonal — September alone averages 12.7 inches while December barely receives 1.11 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Owerri climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 87 | 87 | 87 | 86 | 84 | 83 | 83 | 83 | 84 | 85 | 85 |
| Avg temp (°F) | 77 | 80 | 81 | 81 | 80 | 79 | 78 | 77 | 78 | 78 | 79 | 77 |
| Avg low (°F) | 69 | 72 | 75 | 75 | 75 | 74 | 72 | 72 | 73 | 73 | 73 | 69 |
| Precipitation (in) | 1.2 | 2.3 | 5.6 | 8.7 | 10.7 | 11.9 | 12.2 | 11.1 | 12.7 | 12.2 | 4.8 | 1.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 87 | 87 | 87 | 86 | 84 |
| Avg temp (°F) | 77 | 80 | 81 | 81 | 80 | 79 |
| Avg low (°F) | 69 | 72 | 75 | 75 | 75 | 74 |
| Precipitation (in) | 1.2 | 2.3 | 5.6 | 8.7 | 10.7 | 11.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 83 | 83 | 83 | 84 | 85 | 85 |
| Avg temp (°F) | 78 | 77 | 78 | 78 | 79 | 77 |
| Avg low (°F) | 72 | 72 | 73 | 73 | 73 | 69 |
| Precipitation (in) | 12.2 | 11.1 | 12.7 | 12.2 | 4.8 | 1.1 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 1 | 5 | 3 | 2 | 0.7 | — | — | — | — | — | 0.1 | 0.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 1 | 5 | 3 | 2 | 0.7 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | — | — | — | 0.1 | 0.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 60 | 77 | 80 | 79 | 82 | 88 | 89 | 88 | 82 | 64 | 44 |
| Relative humidity (%) | 75 | 79 | 86 | 88 | 89 | 90 | 90 | 90 | 91 | 90 | 86 | 78 |
| Wind speed (mph) | 3.0 | 3.0 | 3.0 | 3.0 | 2.8 | 3.3 | 3.8 | 4.0 | 3.4 | 2.8 | 2.2 | 2.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 60 | 77 | 80 | 79 | 82 |
| Relative humidity (%) | 75 | 79 | 86 | 88 | 89 | 90 |
| Wind speed (mph) | 3.0 | 3.0 | 3.0 | 3.0 | 2.8 | 3.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 88 | 89 | 88 | 82 | 64 | 44 |
| Relative humidity (%) | 90 | 90 | 91 | 90 | 86 | 78 |
| Wind speed (mph) | 3.8 | 4.0 | 3.4 | 2.8 | 2.2 | 2.5 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.