Last updated: August 27, 2025
Lagos, Nigeria in September experiences a tropical climate characterized by warm temperatures and high humidity. With a maximum temperature reaching 29°C (85°F) and an average of 26°C (79°F), residents and visitors alike can expect a pleasant yet humid atmosphere, with nighttime lows around 23°C (74°F). This month witnesses significant rainfall, averaging 218 mm (8.6 inches) over approximately 28 days, making it one of the wetter periods of the year. The high humidity level, at 91%, contributes to a feeling of mugginess, urging individuals to stay hydrated and seek shelter during the frequent downpours. Overall, September in Lagos is marked by its lush greenery and vibrant atmosphere brought about by the seasonal rains.
In September, Lagos experiences a slight dip in temperatures as the city transitions from the heart of the rainy season. The average temperature hovers around 26°C (79°F), with nighttime lows dropping to 23°C (74°F) and daytime highs reaching up to 29°C (85°F). This marks a continuation of the trend seen in the previous months, with temperatures remaining relatively stable but starting to edge down from the peak summer heat. The notable humidity this month can make the air feel a bit warmer, but the overall climate remains inviting, perfect for enjoying the vibrant city life amidst gentle breezes. As the rainy season winds down, September provides a refreshing blend of warmth and moisture, shaping a unique atmosphere that characterizes Lagos during this time of year.
In September, Lagos experiences a notable peak in precipitation, with a substantial 218 mm (8.6 in) of rain spread across 28 days. This marks a continuation of the city's rainy season, which usually begins in earnest from June and tends to show a gradual increase in rainfall leading up to September. The month showcases a shift from the heavier downpours of June and July, where totals were as high as 304 mm and 258 mm, respectively. By contrast, August sees a decrease to 178 mm, only to witness a resurgence in September. This pattern underscores the dynamic climate of Lagos, highlighting how each month contributes uniquely to the overall weather tapestry, paving the way for fluctuations as the city transitions into October, when precipitation slightly increases again to 240 mm.
As the calendar turns to September in Lagos, Nigeria, the city experiences a notable increase in humidity, peaking at 91%. This rise is part of a progressive trend, with humidity gradually climbing from a more comfortable 37% in January to an almost oppressive level by the end of the rainy season. The journey through the months reveals a significant shift, especially from May onward, where the atmosphere becomes increasingly heavy and saturated. With September marking the climax of this humid spell, residents often feel the effects of the tropical climate, setting the stage for the warm transition into October, which maintains a high, yet slightly reduced humidity of 90%. This seasonal pattern underscores the characteristic lushness of Lagos, shaping the experiences of both locals and visitors alike.
In September, Lagos experiences a UV Index of 12, firmly placing it in the extreme exposure category with a burn time of just 10 minutes. This slight uptick from August's consistent 11 indicates that as the dry season approaches, sun exposure becomes increasingly intense for residents and visitors. The trend throughout the year reveals that as we move from the rainier months, the UV Index rises significantly, peaking in April with an index of 13. Therefore, it's crucial to take precautions during this time, as the sun's rays can be particularly harsh. For more detailed insights on UV Index levels throughout the year in Lagos, visit Lagos UV Index.
UV Risk Categories
September in Lagos sees a notable dip in sunshine hours, with the city basking in 284 hours of sunlight—a decrease from the vibrant summer months. Following the peak of 320 hours in May, Lagos experiences a gentle decline through the summer, with August returning to 309 hours before September's shift. This trend reflects the city’s transition towards the onset of the rainy season, as it prepares for October's increase back to 305 hours. Overall, while September may signal a reduction in sunny days, it still contributes to an exciting tapestry of light that Lagos weaves throughout the year, maintaining a dynamic climate that is ever-changing yet consistently inviting.
As September rolls into Lagos, the odds of sunny weather take a noticeable dip, with only a 14% chance of clear skies, making it one of the cloudier months of the year. This decline follows a marked reduction in sunlight from the vibrant days of January and February, where the probabilities of sun hover around 55% and 54%, respectively. The trend further diminishes through the summer months, reaching a low of just 10% in August. As the rainy season lingers, September's weather may appear gloomy, but as the month progresses, there's hope for an uptick in sunshine, with a gradual increase anticipated in October.
In Lagos, Nigeria, the month of September continues the trend of consistent daylight that characterizes much of the region throughout the year. With approximately 12 hours of daylight, September marks the transition into the latter part of the year, maintaining the same daylight duration that started in March and persisted through to August. This extended period of daylight creates an inviting atmosphere for outdoor activities and vibrant urban life, setting the stage for the changing seasons. As the year progresses towards October, daylight begins to taper off, returning to around 11 hours, but for now, Lagos basks in the balance of light and warmth that September offers.
As September arrives in Lagos, the coastal winds begin to whisper a gentle lullaby, with an average speed of 2.8 m/s (6 mph). This marks a subtle decrease from the lively breezes of the preceding months, particularly July, which boasted a brisk 4.0 m/s (9 mph). June, in contrast, saw the winds calm down to the same 2.8 m/s, suggesting a recurring seasonal trend where summer's vigor softens into the embrace of autumn. As the year progresses, the winds seem to trend quieter, with a gradual decline expected leading into the cooler months, as evidenced by October's and November's similar gentle speeds. This shift invites Lagosians to enjoy the serenity of September's softer winds, hinting at the transition towards the more tranquil atmosphere that characterizes the latter part of the year.
Weather in Lagos varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lagos, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between September and January, one can see a notable shift in conditions. September experiences a more humid climate with an average temperature of 26°C (79°F) and significant precipitation, totaling 218 mm (8.6 in) over 28 days, resulting in a muggy atmosphere with humidity levels at 91%. In contrast, January tends to be drier and warmer, with an average temperature of 28°C (82°F) and much less rainfall of only 24 mm (1.0 in) across 7 days, accompanied by significantly lower humidity at 37%. This transition highlights the change from the wet season in September to the drier, more comfortable conditions typical of January. For more detailed information, you can check Lagos weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a comfortable minimum of 23°C (74°F) to a maximum of 29°C (85°F), with an average of 26°C (79°F). However, this month is marked by high precipitation, totaling 218 mm (8.6 in) over 28 days and humidity levels soaring to 91%. In contrast, February is warmer overall, with temperatures ranging from a minimum of 22°C (72°F) to a peak of 33°C (92°F), averaging 28°C (83°F). Additionally, February experiences significantly less rainfall at 58 mm (2.3 in) over 15 days, and the humidity drops to a more comfortable 44%. For more insights on February weather, check out Lagos weather in February.
In September, the weather tends to be warmer and more humid, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (85°F) and an impressive 218 mm (8.6 in) of precipitation over 28 days. The humidity during this month is quite high at 91%, making the atmosphere feel quite muggy. In contrast, March brings slightly hotter temperatures with a minimum of 25°C (77°F) and a maximum of 32°C (90°F), accompanied by less rainfall, totaling 107 mm (4.2 in) over 23 days, and significantly lower humidity at 61%. This results in a more comfortable and drier feel compared to the wet and sticky September weather. For more specific details on March conditions, check out Lagos weather in March.
When comparing the weather in September and April, we see distinct differences in temperature, precipitation, and humidity. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 29°C (85°F), with the average being around 26°C (79°F). However, this month is marked by heavy rainfall, with 218 mm (8.6 in) of precipitation spread across 28 days and high humidity levels at 91%.
In contrast, April experiences slightly warmer temperatures, with a minimum of 24°C (76°F) and a maximum of 32°C (89°F), averaging 28°C (83°F). Precipitation is significantly lower at 100 mm (3.9 in) over 21 days, and humidity is also more comfortable at 72%. For a more detailed analysis, check out this guide on Lagos weather in April.
September and May offer distinct weather patterns in Lagos. September typically presents a warm range, with minimum temperatures around 23°C (74°F) and averages reaching 26°C (79°F). However, it is marked by high humidity at 91% and considerable rainfall, amounting to 218 mm (8.6 in) over 28 days. In contrast, May is slightly warmer, with a minimum temperature of 24°C (76°F) and an average of 28°C (82°F), while the maximum can reach up to 32°C (89°F). Though humidity is lower at 82%, May still experiences significant rainfall, totaling 179 mm (7.1 in) across 26 days. For more details, you can check Lagos weather in May.
In comparing the weather of September and June, both months exhibit warm temperatures, with September experiencing a minimum of 23°C (74°F), an average of 26°C (79°F), and a maximum of 29°C (85°F). June, on the other hand, has slightly higher temperatures, with a minimum of 23°C (73°F), an average of 27°C (80°F), and a peak of 30°C (87°F). Notably, June is characterized by greater precipitation, totaling 304 mm (12.0 in) across 27 days, compared to September's 218 mm (8.6 in) over 28 days, though September’s humidity is slightly higher at 91% compared to June’s 86%. For more detailed information, you can visit Lagos weather in June.
In comparing the weather between September and July, both months maintain a warm average temperature of around 26°C (79°F), with September featuring slightly lower minimum and maximum temperatures of 23°C (74°F) and 29°C (85°F). July, on the other hand, starts off a bit warmer with minimums at 24°C (75°F) and a maximum of 29°C (84°F). Precipitation is notably higher in July, with 258 mm (10.1 in) over 29 days compared to September's 218 mm (8.6 in) over 28 days. Additionally, September experiences higher humidity levels at 91%, compared to July’s 87%. For more details on July's weather, please visit Lagos weather in July.
In comparing the weather of September and August, both months exhibit warm temperatures, with September slightly warmer, showcasing a minimum of 23°C and an average of 26°C, while August has a similar minimum of 23°C but a lower average of 25°C. Interestingly, the maximum temperatures are consistent for both months, hitting 29°C. However, September experiences more rainfall, accumulating 218 mm over 28 days, compared to August's 178 mm over 24 days. Humidity levels remain high in both months, with September at 91% and August at 90%. For more details, visit Lagos weather in August.
In September, temperatures in Lagos typically range from a minimum of 23°C (74°F) to a maximum of 29°C (85°F), with an average temperature of around 26°C (79°F). This month sees significant rainfall, accumulating to about 218 mm (8.6 in) over 28 days, and humidity levels remain high at 91%.
In contrast, October experiences slightly warmer temperatures with daily lows of 24°C (75°F) and highs reaching 30°C (87°F), averaging 27°C (80°F). Rainfall increases in this month, totaling 240 mm (9.5 in) also spread across 28 days, while humidity remains similar at 90%. For a detailed look at the weather in October, you can visit Lagos weather in October.
In comparing the weather between September and November, September experiences slightly cooler temperatures, with an average of 26°C (79°F) compared to November's average of 28°C (82°F). November also has higher maximum temperatures, reaching 31°C (88°F), while September peaks at 29°C (85°F). Additionally, September is marked by significantly higher precipitation, totaling 218 mm (8.6 in) over 28 days, whereas November sees a much drier 95 mm (3.7 in) over 24 days. Humidity levels are also lower in November at 82%, compared to September's 91%. For more detailed insights into November's climate in Lagos, you can check out Lagos weather in November.
In September, Lagos experiences a warm climate with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (85°F). The month is also quite wet, recording approximately 218 mm (8.6 in) of precipitation over 28 days, resulting in high humidity levels around 91%.
In contrast, December brings warmer averages with temperatures between a minimum of 23°C (75°F) and a maximum of 32°C (90°F). The month sees significantly reduced rainfall, totaling just 36 mm (1.4 in) across 12 days, which contributes to a much lower humidity level of 63%. This makes December's weather notably drier and sunnier compared to September. For more detailed insights, check out Lagos weather in December.
As September unfolds in Lagos, the weather reveals a notable shift characterized by higher humidity levels and frequent rainfall, making it one of the wettest months of the year. The skies often remain overcast, creating a cooler ambiance compared to the sweltering heat of the dry season. With an average temperature hovering around a comfortable 26°C, this month offers a reprieve from the usual warmth while still embracing the tropical essence of the region. The significant precipitation brings life to the landscape, albeit at the cost of persistent dampness. For those looking to understand more about Lagos' unique climate throughout the year, you can explore further at Lagos Climate.