Last updated: August 21, 2025
In September, Grand-Bassam, Côte d'Ivoire, experiences a warm and humid climate atypical for coastal regions. With maximum temperatures lingering around 27°C (80°F) and averages settling at 25°C (77°F), the balmy weather invites both locals and visitors to embrace outdoor activities amid lush surroundings. However, the month is also characterized by significant rainfall, with a total precipitation of 154 mm (6.0 in) over 26 days, creating a vibrant and lush landscape. The high humidity levels of 93% contribute to a tropical feel, making this time of year ideal for experiencing the unique beauty and rhythms of life in Grand-Bassam.
In September, Grand-Bassam, Côte d'Ivoire, experiences a gentle transition in temperatures as the last hints of summer linger. The month sees a minimum temperature of 23°C (74°F), providing a comforting start to the day. As temperatures rise, the average settles around 25°C (77°F), creating a pleasantly warm atmosphere perfect for beach outings. With a maximum of 27°C (80°F), the heat remains manageable, allowing residents and visitors to enjoy outdoor activities without discomfort. This slight dip in temperature compared to the hotter months of July and August marks the onset of autumn, offering a refreshing change while still embracing the tropical warmth that defines this coastal paradise.
In September, Grand-Bassam experiences a notable surge in precipitation, accumulating 154 mm (6.0 in) over 26 days of rainfall. This month marks a significant increase from August's 82 mm, reflecting the region's transition deeper into the rainy season. The pattern of continuing wet weather is consistent with the heavier rains observed from May through October, where monthly totals remain elevated. As the second highest rainfall recorded this year, September not only showcases the lush vibrancy that accompanies the wet season but also underlines the importance of this month in replenishing local water sources and supporting agriculture in Côte d'Ivoire.
As the summer draws to a close, September in Grand-Bassam brings an increase in humidity, with levels peaking at 93%. This marks the culmination of a gradual rise from a more moderate 74% in January and February to the tropical feel characteristic of the region’s climate. The trend is unmistakable: each month from April onwards witnesses a steady climb in humidity, peaking in August before slightly tapering off in October. This high humidity not only enhances the lushness of the landscape but also creates a warm, enveloping atmosphere, making September a quintessentially tropical experience in this coastal town.
In September, Grand-Bassam experiences a UV Index of 12, maintaining its status in the extreme exposure category with a burn time of just 10 minutes. This continues the trend observed throughout the summer months, where high UV levels prevail, urging residents and visitors alike to adopt sun safety measures. Notably, from January through August, the UV Index fluctuated between 10 and 14, peaking in April and gradually subsiding slightly by November. However, even as the months transition into autumn, individuals should remain vigilant, given the sustained risk of skin damage. For more detailed insights on sun exposure, visit Grand-Bassam UV Index.
UV Risk Categories
September in Grand-Bassam, Côte d'Ivoire, experiences a delightful 290 hours of sunshine, offering a warm farewell to summer. This month marks a slight dip from the sun-drenched peak of August, which boasts an impressive 314 hours. However, September still shines brighter than the earlier months of the year, confirming the trend of increasing sunlight as we transition from the rainy season. With October and November poised to follow, each bringing over 300 hours of radiant daylight, it’s clear that Grand-Bassam enjoys a robust streak of sunshine that sets the perfect backdrop for leisurely beach days and vibrant local festivities. Embrace the warmth, as the golden rays of September weave together the remnants of summer and the promises of a sunlit autumn.
In September, Grand-Bassam sees a notable decrease in sunny weather, with only a 22% chance of sunshine. This dip continues the trend of diminished sunlit days that begins in the sweltering month of June and continues through August, when the likelihood hovers around 24%. As the region transitions from the rainy season, the chances for clear skies remain rather low compared to earlier months like January and December, where the sun is more likely to shine, boasting probabilities of 54% and 57% respectively. September marks a turning point, signaling the end of summer with a subtle yet perceptible shift towards drier, sunnier days as the year progresses.
In Grand-Bassam, Côte d'Ivoire, September brings 12 hours of daylight, continuing the trend established in the preceding months of April through August. This consistent duration reflects a stable climatic pattern, where daylight remains plentiful during the vibrant spring and summer seasons. Following this peak, daylight hours begin to taper off in October, shifting back to 11 hours as the year transitions into the cooler months. Observing this rhythm, it's evident that Grand-Bassam enjoys a predominantly steady daylight experience, with the year subtly oscillating between 11 and 12 hours, enriching the local ambiance and daily life.
In September, Grand-Bassam experiences a gentle breeze with an average wind speed of 3.9 m/s (9 mph), reflecting a slight decline from the more robust winds of summer. This month marks a transition as the winds begin to soften, following the peak gusts of 4.4 m/s (10 mph) seen in both July and August. As the year progresses, the wind speeds gradually decrease, particularly noticeable in the months leading up to the end of the year, where averages dip to around 3.2 m/s (7 mph) by November. Despite this slight decline, September retains a pleasant breeze that complements the idyllic coastal charm of Côte d'Ivoire, making it an appealing time for outdoor activities along the shores.
Weather in Grand-Bassam varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Grand-Bassam, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January in Grand-Bassam showcase contrasting weather patterns. In September, temperatures hover between a minimum of 23°C (74°F) and a maximum of 27°C (80°F), accompanied by high humidity levels of 93%. Rainfall is significant, with an average precipitation of 154 mm (6.0 in) spread over 26 days, making it one of the wetter months of the year. In contrast, January experiences higher average temperatures, ranging from 23°C (74°F) at night to a warm 31°C (88°F) during the day. It also sees considerably less rainfall, with only 42 mm (1.6 in) over 16 days and lower humidity at 74%. This makes January a drier and slightly warmer month compared to the humid and rainy September. For more details on January weather, visit Grand-Bassam weather in January.
September and February exhibit distinct weather patterns in Grand-Bassam. September, characterized by high humidity at 93%, sees temperatures ranging from a minimum of 23°C (74°F) to a maximum of 27°C (80°F) and experiences significant rainfall, with 154 mm (6.0 in) over 26 days. In contrast, February offers warmer conditions with temperatures starting at a minimum of 25°C (76°F) and peaking at 30°C (86°F), alongside a much lower precipitation total of 69 mm (2.7 in) spread over 20 days and a humidity level of 74%. For a more detailed overview of February weather, you can check Grand-Bassam weather in February.
When comparing the weather in September and March, we notice some significant differences. September features a milder temperature range, with an average of 25°C (77°F), peaking at a maximum of 27°C (80°F). This month is characterized by high humidity levels at 93% and considerable rainfall, with 154 mm (6.0 in) spread over 26 days. In contrast, March is warmer, with a minimum of 25°C (76°F) and an average high reaching 30°C (86°F). The precipitation is notably less, at 87 mm (3.4 in) across 22 days, and the humidity drops to 77%. Overall, March offers a drier and warmer climate compared to the wet and humid conditions of September. For more detailed information about March weather, visit Grand-Bassam weather in March.
In comparing the weather in September and April, we can see some notable differences. September tends to be slightly cooler, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 27°C (80°F), while April is warmer, with temperatures starting at a minimum of 25°C (77°F) and reaching up to 30°C (86°F). Additionally, September experiences higher humidity at 93%, compared to April's 80%, which can make the former feel more oppressive. Rainfall is also more pronounced in September, with 154 mm (6.0 in) over 26 days, while April sees less precipitation at 129 mm (5.1 in) over 24 days. For more detailed information about the weather in April, you can visit Grand-Bassam weather in April.
In comparing the weather of September and May, we observe that both months are characterized by warm temperatures and high humidity. September features slightly cooler conditions with a minimum temperature of 23°C (74°F) and an average of 25°C (77°F), whereas May is warmer, with a minimum of 25°C (77°F) and an average of 27°C (81°F). Rainfall is notably higher in May, accumulating to 230 mm (9.1 in) over 28 days, compared to September’s 154 mm (6.0 in) over 26 days. Additionally, while September has a higher humidity level at 93%, May maintains a less oppressive 84% humidity. For more details on the weather patterns in May, consider visiting Grand-Bassam weather in May.
In comparing the weather of September and June, both months exhibit warm temperatures, with September having a minimum of 23°C (74°F) and an average of 25°C (77°F), while June shows slightly warmer conditions with an average temperature of 26°C (79°F) and a maximum of 29°C (84°F). However, June is notably rainier, receiving 316 mm (12.4 in) of precipitation over 29 days, compared to September's 154 mm (6.0 in) over 26 days. Humidity is also higher in September at 93%, compared to June’s 85%. For a closer look at June weather specifics, visit Grand-Bassam weather in June.
In comparing the weather of September and July, both months maintain warm temperatures with minimums around 23°C (73-24°F), averages of 25°C (77°F), and maximums reaching 27°C (80-81°F). However, September tends to be slightly more humid, with an average humidity of 93% compared to July's 86%. Additionally, September experiences more precipitation, with 154 mm (6.0 in) over 26 days, whereas July has 145 mm (5.7 in) across 24 days. This increased rainfall and humidity make September feel a bit more sultry than July. For further details, check Grand-Bassam weather in July.
In comparison to August, September experiences slightly warmer temperatures, with average highs reaching 27°C (80°F) compared to August's maximum of 26°C (80°F). Both months share a similar minimum temperature of around 23°C (73°F-74°F), but September's average temperature is a notch higher at 25°C (77°F) versus August's 24°C (76°F). However, September is notably wetter, with precipitation levels rising to 154 mm (6.0 in) over 26 days, while August sees only 82 mm (3.2 in) on 20 days. Humidity remains comparable, with September at 93% and August at 92%. For more details on the weather in August, you can visit Grand-Bassam weather in August.
In comparing the weather of September and October, we observe a slight rise in temperatures, with October averaging at 26°C (79°F) compared to September's 25°C (77°F). Both months experience high humidity, with October at 91% and September slightly higher at 93%. Additionally, October sees a marginal increase in precipitation, totaling 162 mm (6.4 in) over 29 days, compared to September's 154 mm (6.0 in) over 26 days. Despite the slight increases in both temperature and precipitation, October remains a warm and humid month, characteristic of the coastal climate. For more detailed information, you can check Grand-Bassam weather in October.
In comparing the weather of September and November, we observe a slight increase in temperatures during November, with minimum temperatures averaging 24°C (76°F) and maximum temperatures reaching up to 29°C (85°F). In contrast, September's temperatures hover between a minimum of 23°C (74°F) and a maximum of 27°C (80°F). Additionally, November experiences reduced precipitation levels at 128 mm (5.0 in) over 28 days, compared to September’s higher 154 mm (6.0 in) across 26 days. The humidity also differs, dropping from 93% in September to 82% in November, making November feel somewhat more comfortable. For more detailed insights on the November climate specifics, check out Grand-Bassam weather in November.
In comparing the weather from September to December, we can see some notable differences. September experiences cooler temperatures with a minimum of 23°C (74°F) and an average of 25°C (77°F), while December offers slightly warmer conditions, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (85°F). Additionally, September is characterized by higher precipitation levels, with 154 mm (6.0 in) spread over 26 days, compared to December's much lower 74 mm (2.9 in) over just 22 days. Humidity also decreases in December, averaging 80% compared to a much higher 93% in September. For more detailed information, you can check Grand-Bassam weather in December.
September in Grand-Bassam ushers in a unique atmosphere, marked by a high humidity level that soars to around 93%, creating a distinct tropical feel compared to drier months. With temperatures averaging a comfortable 25°C (77°F), the month experiences a significant increase in precipitation, manifesting in nearly every day of the month—26 in total—resulting in about 154 mm (6.0 in) of rain. This combination of warmth and moisture not only enhances the lushness of the landscape but also creates a vibrant, yet often showery, ambiance that sets September apart from the drier spells of the year. For more detailed insights into the weather patterns of this beautiful coastal town, visit Grand-Bassam Climate.