Onitsha Weather in September
September in Onitsha brings very high temperatures, with daytime highs of 31°C (88°F) and nights around 23°C (73°F). It's also the wettest month of the year, so an umbrella is a must.
Rainfall in Onitsha in September
As part of the rainy season, Onitsha sees around 19 days of rain in September, with an average of 227 mm (8.9 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Onitsha in September
Daytime temperatures in Onitsha reach 31°C (88°F) in September, dropping to 23°C (73°F) at night. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 23°C (73°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.September in Onitsha has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Nigeria, check out our Onitsha's climate page.
Onitsha Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
31°C (88°F)
Chance of Rain
62%
Precipitation
227 mm (8.9 in)
Rainy days
19 days
Historical weather for Onitsha in September
Browse day-by-day weather records for Onitsha spanning 40 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Onitsha historical weather extremes in September
Our historical data for Onitsha spans 2006 to 2025, revealing these weather extremes.
- The hottest September day on record in Onitsha reached 36°C (97°F) (September 30, 2019).
- The lowest daytime temperature in September was 24°C (75°F), recorded on September 3, 2014.
- The lowest overnight temperature recorded in September was 22°C (72°F) (September 14, 2013).
- Peak precipitation in September occurred on September 21, 2017, when 146 mm (5.7 in) of precipitation was measured.
Best Places in Nigeria in September
Find out more about the weather in Nigeria and which places have the best travel conditions in this month. See all of Nigeria in September →
perfect weather
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What to Wear in Onitsha in September
Warm but pleasant conditions in Onitsha in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Onitsha in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Nigeria, check out our Onitsha's climate page.
See the full Onitsha climate overview or explore weather in Nigeria.
