Onitsha in Fall
In fall (September, October and November), Onitsha sees average daytime highs around 31°C and overnight lows near 24°C, with 384 mm of rain over about 56 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 29°C in early September to 33°C by late November. The sky is clear or mostly clear about 7% of the time across fall, and the air most often feels oppressive.
Fall is Onitsha's best season of the year to visit on our travel score. For the whole year in context, see Onitsha's year-round climate.
- Avg daytime high
- 31°C
- 3rd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 384 mm
- 56 wet days
- Avg wind
- 6 km/h
- Travel score
- 3.5
- best season of the year
- Months
- Sep · Oct · Nov
Temperature in Onitsha in Fall
Over the season highs climb from about 29°C in early September to 33°C by late November.
A typical fall day in Onitsha reaches about 31°C and drops to 24°C overnight. The warmest of the three months is November, the coolest September.
How fall really feels in Onitsha
Once humidity and wind are folded in, fall brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Onitsha weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 35° / 24° | 5 | 1.1 | 11.7 | 3.1 |
| Feb | 36° / 25° | 13 | 2.9 | 11.8 | 2.5 |
| Mar | 35° / 25° | 47 | 9.6 | 12 | 2.5 |
| Apr | 33° / 25° | 95 | 16.1 | 12.1 | 2.7 |
| May | 32° / 25° | 142 | 23.1 | 12.3 | 2.7 |
| Jun | 30° / 24° | 184 | 25.5 | 12.3 | 3.0 |
| Jul | 29° / 23° | 178 | 26 | 12.3 | 3.3 |
| Aug | 29° / 23° | 177 | 23.2 | 12.2 | 3.6 |
| Sep | 30° / 24° | 200 | 26.8 | 12 | 3.0 |
| Oct | 31° / 24° | 155 | 23.1 | 11.9 | 3.2 |
| Nov | 32° / 24° | 29 | 5.7 | 11.7 | 4.2 |
| Dec | 34° / 24° | 4 | 1 | 11.6 | 3.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 7% of the time across fall.
Chance of precipitation in Fall
Onitsha gets around 384 mm of rain over 56 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 6 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 06 min in early September to 11 h 42 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.2 kWh/m².
Hazard calendar for Onitsha
In fall, Onitsha overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Onitsha's monsoon runs April–October, when most of the year's rain falls.
Onitsha sees seasonal dust haze (December–April), heaviest in February.
Is fall a good time to visit Onitsha?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Onitsha.
What to pack for Onitsha in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Onitsha sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 56 days see rain.
UV index in Onitsha in Fall
Clear-sky midday UV across fall averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Onitsha peaks around September 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 8 | 10 | 12 | 12 | 11 | 11 | 10 | 9 | 12 | 12 | 10 | 8 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 11 | Extreme |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Very high |
| Dec | 8 | Very high |
Air quality in Onitsha in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Onitsha is worst in January — around 201 µg/m³ PM2.5 (very unhealthy), about 3.5× the cleanest month (August, 58 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 201 | 171 | 100 | 98 | 83 | 73 | 59 | 58 | 70 | 92 | 108 | 197 |
| Level | Very unhealthy | Very unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Very unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 201 | Very unhealthy |
| Feb | 171 | Very unhealthy |
| Mar | 100 | Unhealthy |
| Apr | 98 | Unhealthy |
| May | 83 | Unhealthy |
| Jun | 73 | Unhealthy |
| Jul | 59 | Unhealthy |
| Aug | 58 | Unhealthy |
| Sep | 70 | Unhealthy |
| Oct | 92 | Unhealthy |
| Nov | 108 | Unhealthy |
| Dec | 197 | Very unhealthy |
Where is Onitsha?
Onitsha sits at 6.1°N, 6.8°E, 57 m above sea level, in Nigeria. The nearest listed city is Nkpor, 5.0 km away.
Topography around Onitsha
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Onitsha.
Within 3 km, the terrain around Onitsha has only modest variations in elevation — a maximum elevation change of 131 m around an average of 54 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 222 m; within 80 km, significant variations in elevation — a maximum elevation change of 531 m.
The land around Onitsha is covered by artificial surfaces (70%) within 3 km, trees (45%) and artificial surfaces (23%) within 16 km, and trees (66%) and grassland (21%) within 80 km.
Nigeria travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type D / G
- 230 V · 50 Hz
- Prices
- ≈ 13% of US
- price level, 2025
- GDP per capita
- $1,224
- 2025
- Happiness
- 4.8 / 10
- World Happiness, 2025
- Safe drinking water
- 30%
- of population, 2024
- Homicide rate
- 15.7
- per 100k, 2023
- Road deaths
- 20.7
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- High
- EF EPI 569
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Onitsha (6.1498°, 6.7857°, elevation 57 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.