Climate averages 1991–2020
Port Harcourt weather
in May.
A hot, very wet month: the 7th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Port Harcourt: daytime highs average 29.5°C and nights cool to about 24.1°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 281 mm of rain on roughly 30 days, which makes May a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 20 min on an average May day.
The nearest other city in this atlas is Okrika (9 km away). In May its highs average 29.2°C, about as warm as Port Harcourt, with 281 mm of rain.
Among the 143 cities listed in Nigeria, Port Harcourt ranks joint 119th of 143 for the warmest May highs and joint 132nd of 143 for the driest May (rainfall, lowest first). The mean May high of those 143 cities is 31.7°C; Port Harcourt is 2.2°C cooler than that mean.
From May to June, average highs fall by 1.4°C to 28.1°C, and monthly rainfall rises from 281 mm to 341 mm.
The annual picture
May 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
Port Harcourt climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.1°C23.6°C | 23.6°C | 49 | 13.2 | 11.912 h |
| February | 32.0°C24.4°C | 24.4°C | 80 | 18.0 | 12.012 h |
| March | 30.9°C24.6°C | 24.6°C | 177 | 27.2 | 12.112 h |
| April | 30.2°C24.5°C | 24.5°C | 231 | 27.6 | 12.212 h |
| May, selected | 29.5°C24.1°C | 24.1°C | 281 | 29.5 | 12.312 h |
| June | 28.1°C23.3°C | 23.3°C | 341 | 29.1 | 12.412 h |
| July | 27.4°C22.7°C | 22.7°C | 324 | 29.1 | 12.412 h |
| August | 27.6°C22.7°C | 22.7°C | 265 | 28.5 | 12.312 h |
| September | 27.9°C22.8°C | 22.8°C | 324 | 29.6 | 12.112 h |
| October | 28.5°C23.0°C | 23.0°C | 315 | 30.8 | 12.012 h |
| November | 29.6°C23.5°C | 23.5°C | 177 | 26.6 | 11.912 h |
| December | 31.0°C23.7°C | 23.7°C | 54 | 15.5 | 11.912 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
May in nearby cities
- Okrika in MayNigeria · 9 kmHigh 29.2°C · Low 24.5°C · 281 mm rain
- Buguma in MayNigeria · 17 kmHigh 29.3°C · Low 24.5°C · 292 mm rain
- Aba in MayNigeria · 54 kmHigh 29.6°C · Low 23.4°C · 291 mm rain
- Ogbia in MayNigeria · 78 kmHigh 29.7°C · Low 24.1°C · 312 mm rain
- Owerri in MayNigeria · 79 kmHigh 30.4°C · Low 23.3°C · 264 mm rain
- Yenagoa in MayNigeria · 84 kmHigh 29.9°C · Low 24.1°C · 305 mm rain
- Ikot Ekpene in MayNigeria · 90 kmHigh 29.7°C · Low 23.3°C · 260 mm rain
- Umuahia in MayNigeria · 99 kmHigh 29.7°C · Low 23.0°C · 233 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 Port Harcourt) is explained once on the Port Harcourt year overview and on the Sources, method and limits page.
Okrika lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.