Lagos Weather in September
Nigeria · Tropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
September in Lagos sees average temperatures ranging from a low of 24.0°C (75.2°F) to a high of 28.0°C (82.4°F), with a mean of 25.6°C (78.1°F). Compared to the annual average of 27.1°C (80.8°F), this month is 1.5°C cooler than the yearly norm. Precipitation averages 218.2mm, making it approximately 112.0mm wetter than the monthly average of 107.0mm. The city receives an average of 8.3 hours of sunshine per day during September, with relative humidity averaging 86.4%. Wind speeds reach an average maximum of 17.3 km/h. For travelers, this month offers a temperature experience in Lagos, with wetter-than-average conditions compared to the rest of the year.
Lagos's tropical monsoon climate creates a distinct wet and dry season. I've tracked the rainfall data and found that the city receives over 1,500mm annually, with the heaviest rains from April to October. The best time for visiting is November to March, when the weather is drier and the city's famous nightlife and markets are most enjoyable.
September vs Adjacent Months
| Metric | August | September | October |
|---|---|---|---|
| Mean Temp | 25.3°C (77.5°F) | 25.6°C (78.1°F) | 26.3°C (79.3°F) |
| Rainfall | 113.6mm | 218.2mm | 158.2mm |
| Sunshine | 8.9 hrs | 8.3 hrs | 8.8 hrs |
| Humidity | 84.5% | 86.4% | 86.7% |
| Wind | 20.4 km/h | 17.3 km/h | 14.8 km/h |
| Rainy Days | 30.0 | 28.8 | 30.2 |
Seasonal Context
September falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Lagos in September, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Lagos in September?
The average temperature in Lagos during September ranges from 24.0°C (75.2°F) to 28.0°C (82.4°F), with a mean of 25.6°C (78.1°F).
How much does it rain in Lagos in September?
Lagos receives an average of 218.2mm of precipitation in September, spread across approximately 28.8 rainy days.
What should I pack for Lagos in September?
Based on September weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 218.2mm of precipitation.
Is September a good time to visit Lagos?
September is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Lagos
Cities with Similar September Climate (Tropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 6.52°, 3.38°. Timezone: Africa/Lagos. Last updated: 2026-07-30.