September Weather in Osogbo, Nigeria

Last updated: August 27, 2025

In September, Osogbo, Nigeria experiences a tropical climate characterized by a maximum temperature of 33°C (91°F) and an average of 25°C (77°F), providing a warm atmosphere. The month is marked by significant rainfall, with a total precipitation of 223 mm (8.8 in) occurring over 25 days, contributing to the region's lush greenery. Humidity levels soar to an average of 91%, enveloping the city in a moist embrace that accentuates the vibrant, lively essence of the season. This combination of warmth and wetness makes September a unique time to experience the natural beauty of Osogbo.

September Temperature in Osogbo

In September, Osogbo, Nigeria experiences a subtle transition in its temperatures, showcasing a minimum of 21°C (69°F) and a maximum of 33°C (91°F). With an average temperature hovering around 25°C (77°F), this month marks a slight cooldown compared to the hotter summer months preceding it. The trend reveals an overall decrease in maximum temperatures from the scorching heights of earlier months, providing a refreshing shift as the rainy season continues. As the landscape transforms, visitors can enjoy the moderate warmth, making September a pleasant time to explore the vibrant culture and natural beauty of Osogbo.

September Weather in Osogbo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Osogbo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osogbo, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec828483818078767677788081
Data source: Temperature data for Osogbo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Osogbo

In September, Osogbo experiences a significant uptick in rainfall, with precipitation soaring to 223 mm (8.8 in), marking it as one of the wettest months of the year. This intense rainfall is accompanied by 25 rainy days, contributing to a lush and vibrant landscape. Following the trend of the previous months, September continues the pattern set by August, where both months boast the highest precipitation levels. This consistent deluge suggests a strong rainy season in the late summer, making it a crucial period for agricultural activities, while also highlighting the challenges of navigating daily life amidst extended rainy spells. As the month transitions into October, the precipitation begins to taper off, though it remains substantial, indicating the tail end of the wet season.

September Precipitation Trends in Osogbo

The chart displays monthly precipitation patterns in Osogbo, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Osogbo, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5257465124191174192223166425
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Osogbo

September in Osogbo, Nigeria, is characterized by its high humidity levels, reaching an impressive 91%. This marks the peak of a gradual increase that begins in March, where the humidity starts at a moderate 61% and climbs steadily as the months progress. By the time the rainy season arrives in June and peaks in August, the atmosphere becomes increasingly saturated, creating a sultry environment that culminates in the still-warm air of September. Following this climactic month, the humidity begins to ease slightly in October, settling at 90%. The trend clearly indicates a shift from the dry beginnings of the year, showcasing Osogbo's blend of warmth and moisture by late summer.

September Average Humidity in Osogbo

This chart illustrates the average monthly humidity levels in Osogbo, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Osogbo is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec37%44%61%72%82%86%87%90%91%90%82%63%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Osogbo

In September, Osogbo experiences an extreme UV Index of 13, marking a slight increase from the previous months. This trend of heightened UV exposure continues a pattern established from February through August, where the UV Index consistently peaked at 12 or higher. With a burn time of just 10 minutes, the urgency for sun protection remains paramount. This month stands out as representative of the longer dry season's typical intensity, underscoring the need for residents and visitors to be vigilant about sun safety. As the year progresses into October, the index is expected to remain quite high at 11, aligning closely with the extreme summer months. For more detailed information about daily conditions, check out Osogbo UV Index.

Maximum UV Index Levels in Osogbo for September

The chart shows the monthly maximum UV Index (UVI) for Osogbo in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Osogbo typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10111214121212121311910
Data source: Osogbo September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Osogbo

September in Osogbo, Nigeria, marks a subtle transition in daylight, offering 244 hours of sunshine. Though this month's sunshine is less compared to the vibrant peak of May, with its impressive 301 hours, it still maintains a delightful warmth as the year winds down. This slight dip indicates the seasonal shift from the lush greens of the rainy season to the drier months ahead. Interestingly, September serves as a bridge, nestled between the waning vigor of the bright summer and the sunnier days yet to come in October, which averages 268 hours of sunshine. As the clouds begin to clear and the earth prepares for harvest, the September sun casts a gentle glow over Osogbo, setting the stage for the vibrant days ahead.

Monthly Sunshine Duration in Osogbo: September Highlighted

The September sunshine duration represents the total number of hours Osogbo experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec260h281h293h287h301h283h272h253h244h268h283h313h
Data source: Osogbo September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Osogbo During September

In Osogbo, Nigeria, September marks a noticeable dip in the likelihood of sunny weather, with only an 11% chance of sunshine gracing the skies. This trend follows the rainy season, where the chances of clear days diminish significantly from the summer months. Interestingly, the sun's presence is at its peak during the early months of the year, with January and December enjoying favorable conditions at 48% and 53%, respectively. As we progress toward September, the chance of sunny days plummets, reaching its nadir around August. This shift illustrates the strong seasonal patterns influencing the region's climate, where residents can expect more cloud cover and rain as September unfolds.

Percentage of Sunny Days in September in Osogbo

The chart illustrates the percentage of sunny days in Osogbo throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Osogbo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec48%46%24%25%25%24%15%7%11%22%25%53%
Data source: Osogbo September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Osogbo in September

In Osogbo, Nigeria, the month of September continues the trend of consistent daylight that characterizes the region, offering a daily average of 12 hours of light. This duration aligns perfectly with the extended daylight seen from March through August, where the city enjoys a stable amount of sunshine. As the year progresses towards October, daylight begins to taper off to 11 hours, reflecting a gradual transition into the cooler months. This pattern of daylight duration showcases Osogbo's relatively stable climate, providing residents with ample opportunity to bask in the sun's rays during most of the year.

Average Daylight Hours in Osogbo for September

The chart illustrates the variation in daylight duration in Osogbo throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 42m11h 51m12h 4m12h 17m12h 28m12h 33m12h 30m12h 20m12h 8m11h 55m11h 45m11h 39m
Data source: Osogbo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Osogbo

As September rolls into Osogbo, Nigeria, the average wind speed settles at a gentle 1.6 m/s (3 mph), mirroring the breeziness found in neighboring months. This slight dip from the summer's more vigorous gusts suggests a transition into the upcoming dry season, where the winds remain predominantly mild. Notably, while the earlier months of the year boasted higher averages peaking at 2.3 m/s (5 mph) in May, September's calmness aligns with a broader trend of decreasing wind speeds as the year progresses. A blend of comfort and serenity becomes a hallmark of this month, as Osogbo prepares to embrace the cooler months ahead.

Average September Wind Speed in Osogbo

The chart displays monthly wind speed patterns in Osogbo, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.62.02.22.31.72.22.01.6 m/s1.61.71.6
Data source: Osogbo September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Osogbo Compares to Other Months

Weather in Osogbo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Osogbo, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present strikingly different weather patterns. In September, temperatures range from a minimum of 21°C (69°F) to a maximum of 33°C (91°F), with an average of 25°C (77°F). This month experiences considerable rainfall, totaling 223 mm (8.8 inches) over approximately 25 days, leading to high humidity levels of 91%. In contrast, January offers warmer conditions with a wider temperature range, featuring a minimum of 17°C (62°F) and peaking at 37°C (100°F), while maintaining an average of 28°C (82°F). This month is virtually dry, with only 5 mm (0.2 inches) of precipitation occurring just once, resulting in a significantly lower humidity of 37%. For more detailed insights on January weather, you can visit Osogbo weather in January.

In September, the weather features an average temperature of 25°C (77°F), with daily highs reaching up to 33°C (91°F) and a high humidity level of 91%. This month is marked by significant rainfall, totaling 223 mm (8.8 in) over approximately 25 days, creating a lush, tropical atmosphere. In contrast, February offers a hotter climate with average temperatures around 29°C (84°F) and maximums soaring to 39°C (103°F). Notably, February experiences significantly less precipitation, accumulating only 25 mm (1.0 in) across just 3 days, and the humidity drops to a much drier 44%. For more details on February's weather, check out Osogbo weather in February.

In September, the weather is characterized by warm temperatures with an average of 25°C (77°F) and highs reaching up to 33°C (91°F), accompanied by high humidity at 91%. The month experiences considerable rainfall, with a total precipitation of 223 mm (8.8 in) spread across 25 days, creating a moist atmosphere. In contrast, March sees slightly higher average temperatures at 28°C (83°F) and can soar to a maximum of 38°C (101°F). The precipitation is significantly lower at 74 mm (2.9 in) over 15 days, and the humidity drops to 61%, resulting in a drier and more comfortable climate. For a detailed look at the weather trends, check Osogbo weather in March.

In comparing the weather between September and April, it's evident that both months feature warm temperatures, but with some notable differences. September sees average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 33°C (91°F), accompanied by high humidity at 91% and substantial rainfall of 223 mm (8.8 in) over 25 days. In contrast, April boasts slightly warmer conditions, with an average temperature peaking at 37°C (99°F) and a lower humidity level at 72%. Additionally, April experiences significantly less rainfall, totaling only 65 mm (2.6 in) across 15 days. For a deeper dive into the specific weather conditions of April, you can check Osogbo weather in April.

In comparing the weather of September and May, both months exhibit warm temperatures with minimal variations. September has an average temperature of 25°C (77°F), with maximum highs reaching 33°C (91°F) and frequent precipitation of 223 mm (8.8 in) over 25 days, contributing to a notably high humidity level of 91%. In contrast, May presents slightly warmer conditions, with an average temperature of 26°C (80°F), maximums peaking at 36°C (97°F), and less precipitation at 124 mm (4.9 in) occurring over 19 days, resulting in lower humidity at 82%. For more details on May's weather patterns, visit Osogbo weather in May.

In comparing the weather between September and June, we observe that both months share similar minimum and average temperatures, with September showcasing a maximum temperature of 33°C (91°F) and June reaching slightly higher at 34°C (94°F). Precipitation levels in September stand at 223 mm (8.8 in), which is higher than June's 191 mm (7.5 in), although both months experience rain on approximately 25 days. The humidity in September is also noticeably higher at 91% compared to June's 86%, contributing to a more oppressive feel during the former month. For a closer look at weather specifics, you can check Osogbo weather in June.

When comparing the weather in September to July, both months showcase similar temperature ranges, with minimums around 21°C (69-70°F), average temperatures at 25°C (77°F), and maximums peaking at 33°C (91-92°F). However, September experiences significantly higher precipitation, totaling 223 mm (8.8 in) over 25 days, compared to July's 174 mm (6.9 in) across the same number of days. Additionally, September has a higher humidity level at 91%, compared to July's 87%, making it feel more humid and damp. For more specific details about July weather, you can refer to Osogbo weather in July.

In comparing the weather of September and August, September tends to be slightly warmer, with average temperatures reaching 25°C (77°F), compared to August's average of 24°C (76°F). September also has a higher maximum temperature of 33°C (91°F) versus August's 31°C (88°F). However, it sees increased precipitation, with 223 mm (8.8 in) falling over 25 days, compared to August's 191 mm (7.5 in) during the same number of days. Additionally, humidity levels are a bit higher in September at 91%, making both months feel quite muggy. For more details on August's weather, visit Osogbo weather in August.

September and October present a transition in weather patterns, though both months maintain similar warm temperatures. In September, temperatures range from a minimum of 21°C (69°F) to a maximum of 33°C (91°F), with an average of 25°C (77°F). This month experiences significant rainfall, with 223 mm (8.8 in) of precipitation over 25 days, paired with high humidity at 91%. In contrast, October's weather remains quite comparable, featuring the same temperature range but slightly higher maximums, reaching up to 33°C (92°F) and a marginally warmer average of 25°C (78°F). However, October sees reduced precipitation of 166 mm (6.5 in) over 24 days and slightly lower humidity at 90%. For a detailed overview, you can check Osogbo weather in October.

In comparing the weather between September and November, notable differences emerge. September experiences a minimum temperature of 21°C (69°F) and averages 25°C (77°F), with maxima reaching 33°C (91°F). The month is characterized by high humidity at 91% and significant rainfall, totaling 223 mm (8.8 in) across 25 days. In contrast, November has a slightly lower minimum temperature of 20°C (68°F), but an increase in average temperature to 27°C (80°F) and a higher maximum of 36°C (97°F). The precipitation drastically reduces to 42 mm (1.6 in) over just 9 days, and humidity dips to 82%. These variations highlight the transition from the wet season in September to the drier, warmer conditions typical of November. For more detailed information, you can check Osogbo weather in November.

In September, the weather is characterized by warm temperatures with a minimum of 21°C (69°F) and an average of 25°C (77°F), reaching up to a maximum of 33°C (91°F). This month also sees significant rainfall, with 223 mm (8.8 in) spread over 25 days, and high humidity at 91%. In contrast, December experiences milder temperatures, with a minimum of 17°C (62°F) and an average of 27°C (81°F), peaking at a maximum of 37°C (99°F). The precipitation dramatically decreases to just 5 mm (0.2 in) over a single day, and humidity drops to a more comfortable 63%. For more details, you can check Osogbo weather in December.

Compare Osogbo's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Osogbo

As summer transitions into autumn, September in Osogbo presents a distinct climate characterized by high humidity levels and frequent rainfall, setting it apart from the drier months. Temperatures remain warm but are tempered by the irregular downpours, leading to an average that feels more sultry than other times of the year. With nearly every day seeing some precipitation, this month can feel like a lush, water-soaked oasis, a contrast to the dry heat of previous months. If you're interested in more details about Osogbo's weather patterns throughout the year, visit Osogbo Climate.