Last updated: August 31, 2025
September in Freetown, Sierra Leone is characterized by a tropical climate with an average temperature of 26°C (79°F), peaking at 28°C (82°F) during the day. Nighttime brings cooler air, with minimum temperatures around 24°C (76°F). This month is also notable for its heavy rainfall, accumulating an impressive 579 mm (22.8 in) across 28 days, contributing to the region's lush greenery and high humidity levels at 89%. Despite the frequent showers, the vibrant atmosphere and rich biodiversity make September a captivating time to experience Freetown.
In September, Freetown experiences a gentle shift in temperatures as the city transitions into the heart of its rainy season. With minimums around 24°C (76°F) and averages hovering at 26°C (79°F), the warmth continues from the preceding months, though highs peak slightly lower at 28°C (82°F). This pattern reflects a gradual decline from the summer heat, while still providing a comfortable climate for outdoor explorations. As the rainfall increases, you can expect slightly cooler nights and a lush, vibrant landscape that showcases the beauty of Sierra Leone during this time of year. Overall, September serves as a perfect bridge between the warmer summer months and the cooler, wetter autumn, making it an appealing time for travelers seeking to experience Freetown's unique charm.
September marks a significant transition in Freetown's rainfall patterns, with 579 mm (22.8 in) of precipitation, highlighting the tail end of the intense rainy season. Although rainfall amounts are considerably lower than the record-breaking peaks of July and August, which saw 863 mm and 743 mm, respectively, September still accounts for a substantial 28 rainy days—making it one of the wettest months of the year. Such a high frequency of rainy days contributes to lush greenery and vibrant landscapes, but it also foreshadows the tapering off of the wet season, as October and November bring a marked decrease in both precipitation and rainy days. As the year winds down, Freetown’s weather continues to shift towards a drier climate, paving the way for the dry season ahead.
In September, Freetown experiences a high humidity level of 89%, a slight decrease from the peak of 90% recorded in August. This month falls at the tail end of the heavy rainy season, where humidity steadily climbs from 65% in January to a summer high in August. After peaking, September's humidity indicates a transition, hinting at the approaching dry season as it begins to taper off toward 86% in October. Observing these trends, it's clear that Freetown's humidity showcases a notable rise through the mid-year months, creating a lush tropical environment before gradually sinking as the year progresses.
In September, Freetown, Sierra Leone, continues to experience an extreme UV Index of 13, mirroring the high levels seen throughout the preceding months of July and August. With a consistent burn time of just 10 minutes, it's crucial for residents and visitors alike to take precautions against sun exposure. This trend reflects one of the peak periods for UV radiation in the region, as the UV Index remains elevated even as the year begins to shift towards less intense levels in the coming months. For those planning outdoor activities, staying informed is essential; find more detailed information at Freetown UV Index.
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September in Freetown, Sierra Leone, offers a delightful transition as the sunshine begins to mellow after the peak of summer. With 226 hours of sunlight, this month marks a slight dip from the sun-kissed days of July and August, which saw only 239 and 217 hours, respectively. However, it still stands as a noteworthy time to enjoy the warmth before the rainy season comes to an end. As the sun starts to shine more consistently heading into October, which boasts 281 hours, September provides a perfect opportunity to savor the lingering sunshine amid the lush, vibrant surroundings that define this coastal gem. The gradual increase of daylight hours in the following months hints at the radiant energy blooming in Freetown, making September a cozy yet inviting prelude to the brighter days ahead.
In Freetown, Sierra Leone, the likelihood of sunny weather follows a distinct seasonal pattern throughout the year. Starting with January's robust 70% chance of sunshine, the months gradually see a decline, hitting a low of 10% in August. While September offers a slight rebound, the sun shines only 19% of the time, making it a relatively overcast month. This trend indicates a transitional phase as the rainy season wraps up and gives way to drier conditions in October, where the likelihood climbs to 24%. Overall, if you're hoping for sunny skies in September, be prepared for a mix of clouds along with a few sunny spells.
In September, Freetown, Sierra Leone enjoys a consistent 12 hours of daylight, reflecting the trend of abundant light that predominates from March through to August. This extended daylight period not only enhances outdoor activities but also contributes to the vibrant atmosphere of the city as it transitions into the rainy season. As autumn approaches in October, daylight decreases to 11 hours, marking the beginning of shorter days. The steady daylight duration from late spring to early autumn showcases Freetown's unique tropical climate, where residents bask in the sun-drenched hours for much of the year.
In September, the winds in Freetown, Sierra Leone begin to settle down after the summer's breezy embrace, averaging 3.9 m/s (9 mph). This marks a slight decrease from the more vigorous gusts experienced in August at 5.3 m/s (12 mph), transitioning towards the calm that characterizes the latter months of the year. Interestingly, the wind patterns reveal an upward trend in the earlier months, peaking in July, before gradually declining. The gentle September zephyrs invite a serene ambiance, paving the way for the quieter winds of October and November, which often linger around 2.9 m/s (6 mph) and 2.7 m/s (6 mph), illustrating a comforting shift as the year winds down.
Weather in Freetown varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Freetown, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January in Freetown present contrasting weather conditions. September experiences warmer temperatures, with averages around 26°C (79°F) and high humidity at 89%, making it feel quite muggy. It is also a significantly wetter month, with 579 mm (22.8 in) of precipitation spread over 28 days. In contrast, January offers slightly cooler temperatures, averaging 27°C (81°F), and much drier conditions, with only 6 mm (0.2 in) of rain falling over just one day, resulting in a more comfortable humidity level of 65%. For more details, check out Freetown weather in January.
September and February exhibit distinct weather contrasts. In September, temperatures hover between a minimum of 24°C (76°F) and a maximum of 28°C (82°F) with an average of 26°C (79°F). This month is marked by substantial rainfall, totaling 579 mm (22.8 inches) over 28 days, contributing to high humidity levels of 89%. In contrast, February features similar temperature ranges, with a minimum of 24°C (75°F) and a maximum of 28°C (83°F), averaging at 27°C (80°F). However, February is significantly drier, receiving only 6 mm (0.2 inches) of precipitation over just one day and boasting a lower humidity of 72%. For more detailed insights, you can check out Freetown weather in February.
When comparing the weather in September and March, it's clear that both months have warm temperatures, with September experiencing a minimum of 24°C (76°F) and an average of 26°C (79°F), while March has slightly higher averages, peaking at a max of 29°C (84°F). However, September is characterized by significantly higher precipitation, totaling 579 mm (22.8 in) over 28 days, compared to March, which sees only 14 mm (0.6 in) over just 4 days. Additionally, September's humidity is notably higher at 89%, in contrast to March’s more comfortable 73%. For a closer look at what to expect in March, you can check out Freetown weather in March.
When comparing the weather in September and April, notable differences emerge. September experiences warmer temperatures with a minimum of 24°C (76°F) and an average of 26°C (79°F), while April is slightly warmer overall with a minimum of 25°C (77°F) and an average of 27°C (81°F). However, September is much wetter, receiving an average of 579 mm (22.8 in) of rain over 28 days, compared to April’s modest 35 mm (1.4 in) of precipitation over just 8 days. Additionally, September tends to be more humid at 89%, in contrast to April's lower humidity level of 78%. For more details on April's climate, you can check Freetown weather in April.
When comparing the weather in September and May, it's clear that both months experience warm temperatures, but September tends to be slightly cooler with a minimum of 24°C (76°F) and an average of 26°C (79°F), while May has a minimum of 25°C (77°F) and an average of 27°C (81°F). Humidity levels are high in both months, with September at 89% and May at 80%. However, the rainfall contrasts sharply; September sees a significant amount of precipitation at 579 mm (22.8 in) over 28 days, making it much wetter than May, which experiences just 137 mm (5.4 in) over 20 days. For more detailed insights on May weather, check out Freetown weather in May.
When comparing the weather in September and June, we see that both months have similar minimum temperatures, with September averaging 24°C (76°F) and June also starting at the same low. However, June is slightly warmer on average, with an average temperature of 27°C (80°F) compared to September's 26°C (79°F). Additionally, the maximum temperatures are a touch higher in June at 29°C (84°F), while September reaches a maximum of 28°C (82°F).
Precipitation levels differ significantly, with September experiencing more rain at 579 mm (22.8 in) over 28 days, in contrast to June's 431 mm (17.0 in) spread across 29 days. Humidity is also slightly higher in September at 89%, compared to June's 84%. For more details, you can check Freetown weather in June.
In comparing the weather between September and July, we find that both months experience similar temperature ranges, with a minimum of 24°C (76°F) and an average around 26°C (79°F) to 26°C (78°F). However, September tends to be slightly warmer, peaking at 28°C (82°F), while July's maximum is a bit lower at 27°C (81°F). Precipitation is notably higher in July, with 863 mm (34.0 in) over 31 days compared to September’s 579 mm (22.8 in) across 28 days. Additionally, September has a higher humidity of 89% compared to July's 84%, contributing to a more tropical feel in the air. For more detailed insights about July weather, you can visit Freetown weather in July.
In comparing the weather between August and September, we find that both months have similar temperature ranges, with September slightly warmer on average. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 28°C (82°F), whereas August experiences temperatures from 24°C (76°F) to 27°C (81°F). However, September sees a notable decrease in precipitation, with 579 mm (22.8 in) over 28 days, compared to August's 743 mm (29.3 in) over 29 days. Humidity levels remain relatively high in both months, with September at 89% and August slightly higher at 90%. For more insights on August weather, you can check Freetown weather in August.
In comparing the weather of September and October, both months exhibit similar temperature patterns, with minimums around 24°C (76°F), averages of 26°C (79-80°F), and maximums peaking at 28°C (82-83°F). However, October sees a significant decrease in precipitation, dropping from 579 mm (22.8 in) in September to just 224 mm (8.8 in), despite the number of rainy days remaining the same at 28. Additionally, the humidity levels are slightly lower in October at 86%, compared to September's high of 89%. For more detailed insights, you can check Freetown weather in October.
In September, the weather features a warm climate with average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 28°C (82°F). This month also experiences significant rainfall, totaling 579 mm (22.8 in) over 28 days, accompanied by high humidity levels at 89%. In contrast, November brings slightly warmer temperatures, with an average rising to 27°C (81°F) and a max of 29°C (84°F), but the precipitation drops dramatically to just 106 mm (4.2 in) over 21 days. Additionally, the humidity decreases to a more comfortable 79%. For more detailed information on November weather, visit Freetown weather in November.
In September, the weather in Freetown is characterized by warm temperatures, with daily averages hovering around 26°C (79°F) and a high of 28°C (82°F). This month experiences significant rainfall, totaling 579 mm (22.8 in) over 28 days, contributing to a high humidity level of 89%. In contrast, December offers slightly warmer conditions, featuring a minimum temperature of 25°C (76°F) and an average of 28°C (82°F), culminating in a maximum of 29°C (85°F). However, December is much drier, with only 31 mm (1.2 in) of precipitation over just 10 days, resulting in a more comfortable humidity level of 70%. For more detailed insights, check out Freetown weather in December.
As September unfolds in Freetown, the weather takes on a uniquely humid character, setting itself apart from other months in a notable way. With temperatures hovering comfortably around 26°C (79°F), the warmth is accompanied by significant rainfall, totaling 579 mm (22.8 in) over almost the entire month. The high humidity level of 89% adds an extra layer of tropical stickiness, making outdoor activities a challenge. Unlike drier periods, September's nearly daily showers enrich the lush landscape yet require careful planning for those wishing to explore the vibrant city. For more insights into Freetown’s year-round weather trends, visit Freetown Climate.