September weather forecastNnobi, Nigeria
September
Weather in September
September, the first month of the autumn in Nnobi, is also a moderately hot month, with an average temperature ranging between min 22.6°C (72.7°F) and max 29°C (84.2°F).Temperature
Nnobi's weather in September indicates an average high-temperature of a still warm 29°C (84.2°F), nearly consistent with the 28.5°C (83.3°F) of August. Nighttime temperature in Nnobi, Nigeria, lowers to an average of 22.6°C (72.7°F) in September.Heat index
The heat index value during September is estimated at a sweltering 37°C (98.6°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Consider that heat index readings are for situations in the shade and light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
July through September, with an average relative humidity of 88%, are the most humid months.Rainfall
In September, in Nnobi, the rain falls for 28.3 days. Throughout September, 209mm (8.23") of precipitation is accumulated. Throughout the year, in Nnobi, there are 253.1 rainfall days, and 1279mm (50.35") of precipitation is accumulated.Daylight
In September, the average length of the day in Nnobi is 12h and 9min.On the first day of the month, sunrise is at 06:25 and sunset at 18:38. On the last day of September, in Nnobi, sunrise is at 06:19 and sunset at 18:24 WAT.
Sunshine
In Nnobi, the average sunshine in September is 5.8h.UV index
June through September, with an average maximum UV index of 6, are months with the lowest UV index in Nnobi. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 6 in September translates into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nnobi, Nigeria
- Average high temperature in September: 29°C
The warmest month (with the highest average high temperature) is February (36.5°C).
The month with the lowest average high temperature is August (28.5°C).
- Average low temperature in September: 22.6°C
The month with the highest average low temperature is March (25.5°C).
The coldest month (with the lowest average low temperature) is August (22.2°C).
Average pressure in September
Nnobi, Nigeria
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is July (1013.3mbar).
The months with the lowest atmospheric pressure are February and March (1009.2mbar).
Average wind speed in September
Nnobi, Nigeria
- Average wind speed in September: 6.9km/h
The windiest month (with the highest average wind speed) is March (9.5km/h).
The calmest month (with the lowest average wind speed) is November (6km/h).
Average humidity in September
Nnobi, Nigeria
- Average humidity in September: 88%
The months with the highest relative humidity are July, August and September (88%).
The month with the lowest relative humidity is January (47%).
Average rainfall in September
Nnobi, Nigeria
- Average rainfall in September: 209mm
The wettest month (with the highest rainfall) is July (227mm).
The driest month (with the least rainfall) is December (6mm).
Average rainfall days in September
Nnobi, Nigeria
- Average rainfall days in September: 28.3 days
The month with the highest number of rainy days is July (29.8 days).
The month with the least rainy days is December (5.3 days).
Average daylight in September /
Average sunshine in September
Nnobi, Nigeria
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in September: 5h and 48min
The months with the most sunshine are January and December (Average sunshine: 9h and 42min).
The month with the least sunshine is August (Average sunshine: 4h and 48min).
Average sunshine days in September
Nnobi, Nigeria
- Average sunshine days in September: 1.2 days
The month with the most sunshine days is December (23.4 days).
The month with the least sunshine days is July (1 days).
Average UV index in September
Nnobi, Nigeria
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, October, November and December (UV index 7).
The months with the lowest UV index are June, July, August and September (UV index 6).
Average cloud cover in September
Nnobi, Nigeria
- Average cloud cover in September: 70
The month with the most cloud cover is August (Cloud cover 74).
The months with the least cloud cover are January and December (Cloud cover 15).
Average visibility in September
Nnobi, Nigeria
- Average visibility in September: 6km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are July, August and September (6km).





