Port Harcourt weather in September
In September, Port Harcourt has an average high of 28 °C82 °F and an average low of 22 °C72 °F, with about 397 mm16 in of precipitation. It is the 10th warmest month of the year and the wettest.
How September compares with other months
Compared with August, September is about the same temperature and wetter by 63 mm2.5 in. Compared with October, September is about the same temperature and wetter by 148 mm5.8 in. Daylight lasts about 12.1 hours around the middle of the month. Average relative humidity is 91% and the average cloud amount 89%.
Is September a good time to visit Port Harcourt?
September is not among the most comfortable months by our comfort score: it is hot (average high 28 °C82 °F), it is fairly wet (397 mm16 in) and it is humid (91%). The most comfortable months in Port Harcourt are December and January.
What to wear in September
For Port Harcourt in September, pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
September in nearby places
Other months in Port Harcourt
- January30 °C86 °F / 21 °C69 °F
- February31 °C87 °F / 23 °C73 °F
- March30 °C86 °F / 24 °C75 °F
- April30 °C86 °F / 24 °C75 °F
- May29 °C85 °F / 24 °C75 °F
- June28 °C83 °F / 23 °C73 °F
- July28 °C82 °F / 22 °C72 °F
- August28 °C82 °F / 22 °C71 °F
- September28 °C82 °F / 22 °C72 °F
- October28 °C83 °F / 23 °C73 °F
- November29 °C85 °F / 23 °C73 °F
- December30 °C86 °F / 22 °C71 °F
Frequently asked questions
How warm is Port Harcourt in September?
In September the average high in Port Harcourt is 28 °C (82 °F) and the average low is 22 °C (72 °F).
Does it rain a lot in Port Harcourt in September?
On average about 397 mm (15.6 in) of precipitation falls in September; it ranks 1st of the 12 months.
Is September the warmest month in Port Harcourt?
No. The warmest month in Port Harcourt is February, with an average high of 31 °C (87 °F). The coldest month is January, with an average low of 21 °C (69 °F).
How long is the day in Port Harcourt in September?
In the middle of September the day in Port Harcourt lasts about 12.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Port Harcourt in September?
The average relative humidity in September is about 91%. Combined with warm days, it can feel muggy.
How cloudy is Port Harcourt in September?
On average about 89% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.