Last updated: August 21, 2025
Experience the September weather in Libreville, Gabon, where the tropical climate brings warmth and humidity. With maximum temperatures reaching 29°C (84°F) and an average of 26°C (78°F), the conditions are typically warm and inviting. However, be prepared for frequent rain, as the month averages 232 mm (9.1 in) of precipitation over 25 days, resulting in a humid environment with a humidity level around 88%. This vibrant weather not only nourishes the lush landscape but also offers a unique essence to the rainy season in this coastal city.
In Libreville, Gabon, September ushers in a subtle yet noticeable shift in temperatures as the dry season unfolds. With a minimum temperature of 23°C (74°F) and a maximum of 29°C (84°F), the days remain warm yet slightly cooler compared to the peak of earlier months. The average temperature hovers around 26°C (78°F), providing a comfortable climate for outdoor activities. Following the trend set in the previous months, September's weather reflects a gradual transition towards the cooler months, making it an ideal time for visitors to enjoy the vibrant city, where the tropical heat begins to mellow just enough for pleasant exploration.
In September, Libreville experiences a notable uptick in precipitation, with totals reaching 232 mm (9.1 in) over 25 days of rain. This marks a continuation of the rainy season, which peaks in intensity as the month transitions towards more substantial downpours in October and November. The rainfall in September, while slightly lower than the more torrential months ahead, reflects a steady pattern following the drier months of July and August. As the city braces for the increased moisture, the lush landscapes of Gabon flourish, illustrating the region's vibrant response to the returning rains. Shedding light on the climatic rhythm, September serves as a bridge between the diminishing dry spells and the forthcoming heavy rainfall, feeding the rich ecosystem that defines this tropical locale.
In September, Libreville experiences a notable rise in humidity, reaching an average of 88%—the highest level of the year. This increase signifies the transition towards the peak of the rainy season, following a steady climb from 85% in August. Overall, the moisture levels in September reflect a broader trend of growing humidity during the second half of the year, where averages consistently hover around or above 80%. As the dry months of the year fade away, residents can expect a warm, tropical atmosphere that enhances the lush vibrancy of Gabon's surroundings.
In September, Libreville experiences a UV Index of 12, categorizing it as extreme and indicating a burn time of just 10 minutes. This month reflects a consistent trend seen throughout the year, with high levels of UV radiation persisting from January to May and again from August to November. The peak occurs in April, where the index reaches 14, but even September's level suggests that sun protection is essential. As the seasons shift, residents and visitors alike should remain vigilant against the sun's rays, especially given the steadily high indices. For detailed information on UV exposure in the region, visit Libreville UV Index.
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September in Libreville, Gabon, brings a delightful continuation of the sunshine seen throughout the year, with 270 hours of bright daylight to enjoy. As the season transitions towards its end, this month follows a robust summer period, where August shines the brightest at 292 hours. The trend is quite evident; from January's 253 hours of sun, the hours steadily increase until a peak in May, only to maintain a strong presence through to September. The consistent warmth and brightness create an inviting atmosphere, perfect for both locals and visitors to soak in the tropical charm of Gabon. As the year progresses, the light hours gradually taper off, but September reminds us that summer's embrace lingers just a bit longer in this vibrant coastal city.
In September, the likelihood of sunny weather in Libreville, Gabon stands at 15%, reflecting a notable shift as the region transitions from the more favorable summer months. This percentage places September in a middle-ground between the peak sunshine seen in July at 27% and the lower chances found in the cooler months of October and April, which dip to 10% and 11% respectively. As the rainy season approaches, September’s sunshine is a reminder that, while still modest, there are opportunities to enjoy a sun-drenched day amidst the emerging clouds. This month is particularly reminiscent of a slight retreat from the summer’s brilliance, paving the way for the wetter months ahead.
In Libreville, Gabon, the rhythm of daylight remains remarkably consistent throughout the year, with twelve hours of daylight each month, including September. This steady duration creates a captivating atmosphere, allowing both locals and visitors to enjoy equally vibrant sunrises and sunsets. Whether it’s the bustling energy of city life or the serene beauty of surrounding nature, the unchanging balance of light fosters a sense of continuity that enriches daily experiences. As September unfolds, its predictable daylight invites exploration, leisure, and connection, encapsulating the charm of Libreville's climate.
In September, Libreville experiences a gentle breeze, with an average wind speed of 3.2 m/s (7 mph), comfortably nestled between the more brisk conditions of July and August. This month marks a subtle decline from the summer's peak winds, which reach their highest in August at 3.6 m/s (8 mph). As the year transitions into the later months, wind speeds gradually decrease, hinting at the approach of a calmer climate. Throughout the first half of the year, wind speeds remain relatively low, fluctuating between 2.1 m/s and 3.4 m/s, but there's a noticeable upward trend as summer approaches, culminating in September’s mild but invigorating currents—a perfect prelude to the calm that characterizes the later months of the year.
Weather in Libreville varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Libreville, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather features warm temperatures with a minimum of 23°C (74°F), averaging around 26°C (78°F), and peaking at 29°C (84°F). The month is quite rainy, with a significant total precipitation of 232 mm (9.1 in) spread over 25 days, coupled with high humidity levels at 88%.
Conversely, January experiences slightly warmer conditions, with a minimum temperature of 24°C (75°F), an average of 27°C (80°F), and a maximum of 30°C (87°F). Precipitation is a touch lower at 227 mm (8.9 in) over 24 days, and the humidity drops to 78%.
For a detailed look at the weather specifics, check out Libreville weather in January.
In comparison to September, February exhibits slightly warmer temperatures, with average highs reaching 31°C (88°F) compared to September's maximum of 29°C (84°F). While both months experience considerable humidity, February's 74% humidity is notably lower than September's humid 88%. Precipitation levels are quite similar, with February receiving 227 mm (8.9 in) over 26 days, just shy of September’s 232 mm (9.1 in) over 25 days. For more specific details, you can check Libreville weather in February.
September and March exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 29°C (84°F), with an average of 26°C (78°F), while the humidity is quite high at 88%. This month also sees significant precipitation, totaling 232 mm (9.1 in) over 25 days. In contrast, March presents slightly warmer conditions, with temperatures starting at 24°C (75°F) and peaking at 32°C (89°F), averaging 27°C (81°F). The rainfall in March is even heavier, accumulating 299 mm (11.8 in) over 28 days, but the humidity drops to a more comfortable 75%. For more detailed information, you can explore Libreville weather in March.
In comparing the weather of September and April, we see that both months have warm temperatures, but April tends to be slightly hotter. September features a minimum temperature of 23°C (74°F) and an average of 26°C (78°F), while April has a minimum of 24°C (75°F) and an average of 27°C (81°F). Additionally, April's maximum temperature reaches up to 31°C (88°F), compared to September's 29°C (84°F).
Precipitation levels are quite high in both months, with September receiving 232 mm (9.1 in) over 25 days and April experiencing slightly more with 261 mm (10.3 in) over 27 days. Interestingly, despite the high rainfall, April's humidity is slightly lower at 79% compared to September's 88%. Overall, both months are characterized by high humidity and precipitation, but April offers warmer and slightly drier conditions. For more detailed information, you can refer to Libreville weather in April.
In comparing the weather of September and May, both months exhibit warm temperatures, with September having a slightly lower average temperature of 26°C (78°F) compared to May's 27°C (81°F). However, May typically sees slightly higher maximum temperatures, peaking at 30°C (87°F) versus September's maximum of 29°C (84°F). Precipitation levels are notably higher in May, with 338 mm (13.3 in) falling over 29 days, in contrast to September's 232 mm (9.1 in) spread over 25 days. Additionally, while both months experience high humidity, September is more humid at 88%, compared to May's 80%. For a closer look at the specific conditions of May, check Libreville weather in May.
When comparing the weather in September and June, both months exhibit similar temperature patterns, with minimums around 23°C (74°F), average temperatures of 26°C (78°F in September and 79°F in June), and maximums peaking at 29°C (84°F in September and 85°F in June). However, September is notably wetter, with a significant increase in precipitation at 232 mm (9.1 in) across 25 days, compared to June's 136 mm (5.3 in) over 19 days. Additionally, humidity levels are slightly higher in September at 88%, compared to 80% in June. For more specifics about June weather, you can check out Libreville weather in June.
September weather in Libreville is characterized by warmer average temperatures, with daily highs reaching up to 29°C (84°F) compared to July's maximum of 28°C (83°F). The humidity in September is slightly higher at 88%, contributing to a more humid feel than July's 80%. Additionally, September experiences significantly more rainfall, with precipitation totaling 232 mm (9.1 in) over 25 days, contrasted with July's much lighter 49 mm (1.9 in) over just 12 days. This stark difference in precipitation highlights September as a much wetter month. For more detailed insights, check out Libreville weather in July.
In comparison to August, September typically experiences slightly higher temperatures, with a minimum of 23°C (74°F), average of 26°C (78°F), and a maximum of 29°C (84°F), compared to August's minimum of 23°C (73°F), average of 25°C (78°F), and maximum of 28°C (83°F). However, September is significantly wetter, with a precipitation of 232 mm (9.1 in) over 25 days, while August sees only 78 mm (3.1 in) over 14 days. Additionally, humidity rises slightly in September to 88%, up from August's 85%. For more detailed insights into August weather, visit Libreville weather in August.
In September, the weather features a minimum temperature of 23°C (74°F) and an average of 26°C (78°F), with maximum temperatures reaching 29°C (84°F). The month is notably wet, experiencing 232 mm (9.1 in) of precipitation over 25 days, accompanied by high humidity levels at 88%.
In contrast, October offers slightly warmer conditions with a minimum temperature of 24°C (75°F) and an average reaching 26°C (79°F), peaking at a maximum of 30°C (86°F). However, it is also the rainiest month, with precipitation rising to 377 mm (14.8 in) over 30 days and humidity remaining high at 87%.
For more detailed information, you can check Libreville weather in October.
In comparing the weather conditions between September and November, both months exhibit similar average temperatures, with September averaging 26°C (78°F) and November slightly warmer at 26°C (79°F). However, November experiences a higher maximum temperature of 30°C (86°F) compared to September's 29°C (84°F). Precipitation also sees a notable increase, with September recording 232 mm (9.1 in) over 25 days, while November significantly raises that figure to 463 mm (18.2 in) across 29 days, indicating a wetter month. Despite these differences, humidity levels are relatively consistent, with September at 88% and November slightly lower at 84%. For more detailed insights into the weather, please visit Libreville weather in November.
In September, the weather averages a comfortable 26°C (78°F) with daytime highs reaching up to 29°C (84°F), while nighttime temperatures hover around a minimum of 23°C (74°F). The month experiences considerable rainfall, totaling 232 mm (9.1 in) across 25 rainy days and maintaining high humidity levels of 88%. In contrast, December brings slightly warmer temperatures, with similar averages of 26°C (80°F), but maximums can reach 30°C (86°F). However, the month also sees increased precipitation at 344 mm (13.5 in) over 30 days, accompanied by a decrease in humidity to 80%. For more details on December's weather, check out Libreville weather in December.
As September rolls around, Libreville experiences a unique blend of warmth and humidity, standing out from other months with its average temperature hovering around 26°C (78°F). While the maximum can reach 29°C (84°F), the high humidity at 88% gives the air a noticeably heavier feel. This is coupled with substantial rainfall, averaging 232 mm (9.1 in) over 25 days, making it one of the wetter months. If you're planning a visit, be prepared for frequent showers, but don’t forget to enjoy the vibrant atmosphere that this tropical weather brings. For more insights into Libreville's weather patterns, check out Libreville Climate.