Climate averages 1991–2020
Onitsha weather
in June.
A hot, very wet month: the 9th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a hot month in Onitsha: daytime highs average 29.0°C and nights cool to about 23.3°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 184 mm of rain on roughly 26 days, which makes June a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 28 min on an average June day.
The nearest other city in this atlas is Nkpor (5 km away). In June its highs average 28.7°C, about as warm as Onitsha, with 184 mm of rain.
Among the 143 cities listed in Nigeria, Onitsha ranks joint 60th of 143 for the warmest June highs and joint 58th of 143 for the driest June (rainfall, lowest first). The mean June high of those 143 cities is 29.8°C; Onitsha is 0.7°C cooler than that mean.
From June to July, average highs fall by 0.8°C to 28.2°C, and monthly rainfall falls from 184 mm to 178 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Onitsha climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 34.4°C23.2°C | 23.2°C | 5.1 | 1.1 | 11.812 h |
| February | 34.9°C24.3°C | 24.3°C | 14 | 2.9 | 11.912 h |
| March | 33.8°C24.7°C | 24.7°C | 47 | 9.5 | 12.112 h |
| April | 32.1°C24.5°C | 24.5°C | 95 | 16.0 | 12.312 h |
| May | 30.6°C24.0°C | 24.0°C | 142 | 23.0 | 12.412 h |
| June, selected | 29.0°C23.3°C | 23.3°C | 184 | 25.5 | 12.512 h |
| July | 28.2°C22.8°C | 22.8°C | 178 | 25.9 | 12.412 h |
| August | 28.3°C22.7°C | 22.7°C | 177 | 23.2 | 12.312 h |
| September | 28.7°C23.0°C | 23.0°C | 200 | 26.8 | 12.212 h |
| October | 29.3°C23.2°C | 23.2°C | 155 | 23.1 | 12.012 h |
| November | 30.8°C23.4°C | 23.4°C | 29 | 5.6 | 11.812 h |
| December | 33.1°C23.3°C | 23.3°C | 4.3 | 0.9 | 11.812 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Nkpor in JuneNigeria · 5 kmHigh 28.7°C · Low 23.0°C · 184 mm rain
- Asaba in JuneNigeria · 8 kmHigh 29.2°C · Low 23.5°C · 184 mm rain
- Atani in JuneNigeria · 16 kmHigh 29.1°C · Low 23.3°C · 209 mm rain
- Nnewi in JuneNigeria · 21 kmHigh 28.5°C · Low 22.6°C · 267 mm rain
- Igbo-Ukwu in JuneNigeria · 30 kmHigh 27.4°C · Low 21.5°C · 267 mm rain
- Agulu in JuneNigeria · 31 kmHigh 28.6°C · Low 22.6°C · 267 mm rain
- Awka in JuneNigeria · 32 kmHigh 29.1°C · Low 23.2°C · 212 mm rain
- Ihiala in JuneNigeria · 34 kmHigh 28.4°C · Low 22.5°C · 276 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Onitsha) is explained once on the Onitsha year overview and on the Sources, method and limits page.
Nkpor and Asaba lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.