Lagos
Nigeria
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Lagos, Nigeria

A lit city building in Lagos, Nigeria, with other city structures, seen from River Niger
A lit city building in Lagos, Nigeria, with other city structures, seen from River Niger
The first month of the autumn, September, is still a warm month in Lagos, Nigeria, with average temperature ranging between max 28.9°C (84°F) and min 21.9°C (71.4°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still moderately hot 28.9°C (84°F). In September, in Lagos, the average low-temperature is 21.9°C (71.4°F).

Rainfall

In Lagos, during 12.7 rainfall days, 167.1mm (6.6") of precipitation is typically accumulated. Throughout the year, in Lagos, there are 102.8 rainfall days, and 1538mm (60.6") of precipitation is accumulated.

Sea temperature

In Lagos, the average seawater temperature is 25.8°C (78.4°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Lagos, the average length of the day is 12.2h.

Sunshine

In September, the average sunshine is 3.8h.

UV index

Months with the highest UV index in Lagos are February through May, August through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 12 in September transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Lagos?

The average high-temperature, in September, is 28.9°C (84°F), while the average low-temperature is 21.9°C (71.4°F).

How much does it rain in Lagos in September?

In Lagos, Nigeria, in September, it is raining for 12.7 days, with typically 167.1mm (6.6") of accumulated precipitation.

What is the water temperature in September in Lagos?

In September, the average sea temperature in Lagos is 25.8°C (78.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Lagos have in September?

The average length of the day in September in Lagos, Nigeria, is 12.2h.

How long on average sun shines in September in Lagos?

In September, the average sunshine in Lagos is 3.8h.

When is the highest UV index in Lagos?

February through May, August through October, with an average maximum UV index of 12, are months with the highest UV index in Lagos, Nigeria.

What is the UV index intensity in September in Lagos?

In September, the average daily maximum UV index in Lagos is 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to the UV radiation.
Average temperature in September - Lagos, Nigeria
  • Average high temperature in September: 28.9°C

The warmest month (with the highest average high temperature) is February (33.1°C).
Months with the lowest average high temperature are July and August (28.1°C).

  • Average low temperature in September: 21.9°C

The month with the highest average low temperature is March (23.8°C).
The coldest month (with the lowest average low temperature) is August (21.7°C).

Average rainfall in September - Lagos, Nigeria
  • Average rainfall in September: 167.1mm

The wettest month (with the highest rainfall) is June (312.2mm).
The driest month (with the lowest rainfall) is January (14.3mm).

Average rainfall days in September - Lagos, Nigeria
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is June (16.2 days).
The month with the lowest number of rainy days is December (1.4 days).

Average sea temperature in September - Lagos, Nigeria
  • Average sea temperature in September: 25.8°C

The best month for swimming (with the highest average sea temperature) is May (29.2°C).
The coldest month (with the lowest average sea temperature) is August (25.3°C).

Average daylight in September / Average sunshine in September - Lagos, Nigeria
  • Average daylight in September: 12.2h

Months with the longest days are June and July (Average daylight: 12.5h).
Months with shortest days are January, November and December (Average daylight: 11.8h).

  • Average sunshine in September: 3.8h

Months with most sunshine are November and December (Average sunshine: 6.2h).
The month with least sunshine is July (Average sunshine: 3.2h).

Average UV index in September - Lagos, Nigeria
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).