Last updated: August 21, 2025
In September, Lamu, Kenya experiences a tropical climate that is both warm and humid. Expect maximum temperatures reaching around 27°C (81°F), with a comfortable average of 26°C (78°F) and nightly lows of 24°C (75°F). Visitors should prepare for frequent rain, as the region averages 62 mm (2.5 in) of precipitation over approximately 18 days. With humidity levels hovering around 83%, the atmosphere can feel rather sticky, making light, breathable clothing essential for outdoor activities. This month offers a unique blend of lush landscapes and vibrant culture, perfect for those looking to explore this coastal paradise.
In September, Lamu, Kenya, experiences a gentle shift in temperatures, with minimums averaging around 24°C (75°F), providing a comfortable base for outdoor adventures. The average temperature hovers at 26°C (78°F), while the maximums peak at 27°C (81°F), indicating a transition toward slightly cooler days compared to the preceding months. Overall, this month embodies a delicate balance—retaining the warmth of summer while hinting at the cooler, more pleasant climate to come. As beachgoers and explorers relish the mild conditions, September proves to be an ideal time to embrace the island's vibrant culture and breathtaking landscapes.
In September, Lamu, Kenya experiences a noticeable uptick in rainfall, with 62 mm (2.5 in) of precipitation over 18 days. Following the relatively lower rainfall of August, this month marks a shift towards the wetter conditions that characterize the tail end of the monsoon season. Compared to earlier months, such as January and February with minimal showers, September's precipitation is a reminder of the region's seasonal rhythms. As the skies open up, the lush greenery flourishes, setting the stage for October's return to even more abundant rains. This trend highlights a critical transition, illustrating how September serves as a bridge from the drier months into the heart of Lamu's vibrant wet season.
In September, Lamu, Kenya experiences humidity levels rising to 83%, a continuation of the trend observed in mid-year months. As the coastal city transitions from August's 81%, the air feels increasingly thick and tropical, characteristic of this vibrant region. Notably, the humidity remains high throughout the later months, with October also recording 83%, suggesting a consistent maritime influence. This trend showcases the wet, tropical climate unique to Lamu, where lush landscapes thrive in the warmth and moisture, enticing visitors to embrace the rich culture and stunning scenery amidst the humidity.
In September, Lamu, Kenya experiences a UV Index of 13, categorizing it firmly within the extreme exposure range, where unprotected skin can burn in just 10 minutes. This trend highlights the region's consistently high UV levels throughout the year, especially following the peak indices of 14 and 15 from January to April. Although September mirrors May and October's figures, it remains essential for residents and visitors alike to prioritize sun protection measures. Understanding these patterns is crucial for safety and enjoyment of Lamu's beautiful outdoor scenery. For more detailed information, visit the Lamu UV Index.
UV Risk Categories
As September arrives in Lamu, Kenya, the warmth of the sun continues to shine brightly, contributing to a delightful 341 hours of sunlight throughout the month. This reflects a consistent trend of abundant sunshine, which peaks in March with an impressive 355 hours. Following a brief dip in April, the sunshine rebounds, maintaining a lively presence through the later months of the year. Notably, September's sunlight hours are just shy of the summer highs, ensuring plenty of opportunities for outdoor adventures and soaking in the vibrant local culture. As the year draws to a close, the sun sets only mildly; with October and November also showcasing similar glowing hours, Lamu remains a radiant destination perfect for travelers seeking sun-drenched experiences.
In Lamu, Kenya, September marks a transition towards sunnier days, boasting a 52% chance of sunshine. This likelihood reflects a gradual improvement compared to the cooler and cloudier months of July and August, which see chances dip to 33% and 36%, respectively. As the year progresses from the wet season, September's weather begins to echo the more favorable conditions of October and November, both offering a slight edge with 53% and 56% chances of sun. This moderate boost in sunny days invites visitors to enjoy Lamu's beautiful beaches and vibrant culture, making it an appealing time for travel.
In September, Lamu, Kenya, enjoys a delightful 12 hours of daylight, maintaining a pattern that is consistent throughout much of the year. From January through April, daylight hovers around this ideal duration, offering a balanced rhythm of light and dark. As the year progresses into May, daylight begins to dip to 11 hours, a trend that continues for a few months before stabilizing again. By August, the days stretch back to 12 hours, and September beautifully caps off this summer-like phase. This rhythmic variation showcases the unique climate of Lamu, where daylight duration remains relatively stable, creating an inviting atmosphere for residents and visitors alike.
As September arrives in Lamu, Kenya, the island experiences a moderate wind speed of 7.0 m/s (16 mph), maintaining the breezy vibes that characterize the coastal region. This month sees a slight decline from the peak winds of 8.4 m/s (19 mph) in July, reflecting a transition towards more tranquil conditions as the year winds down. Following the summer cascade of increasing winds from 6.2 m/s (14 mph) in January to July’s height, September’s gentle breezes invite a sense of calm. Yet, the winds remain brisk enough to keep the palm fronds swaying and the ocean's surface dancing, perfect for those seeking a blend of adventure and relaxation. As the year progresses into the softer winds of October, Lamu’s September continues to charm with its balance of subtle strength and coastal serenity.
Weather in Lamu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lamu, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit notable differences in weather conditions. In September, temperatures are slightly lower, with an average of 26°C (78°F) and a maximum of 27°C (81°F), while January sees warmer temperatures, averaging 27°C (81°F) and peaking at 30°C (86°F). Additionally, September experiences significantly more rainfall, with 62 mm (2.5 in) spread over 18 days, compared to January's minimal precipitation of just 10 mm (0.4 in) over a single day. Humidity is relatively high in both months, though September is a bit more humid at 83% compared to January's 79%. For more detailed weather insights, visit Lamu weather in January.
In September, the weather is warm and humid with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 27°C (81°F). This month experiences considerable rainfall, with 62 mm (2.5 in) spread over 18 days, resulting in a humidity level of 83%. On the other hand, February presents slightly warmer temperatures, with an average of 27°C (81°F) and highs reaching 30°C (87°F). Notably, February is much drier, with only 5 mm (0.2 in) of precipitation occurring over 0 days, and the humidity dips slightly to 80%. For more detailed information about February weather, you can check Lamu weather in February.
In comparing the weather between September and March, September tends to be slightly cooler, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 27°C (81°F). The month experiences higher precipitation, totaling 62 mm (2.5 in) over 18 days, along with a higher humidity level of 83%. In contrast, March features warmer temperatures, averaging between 25°C (78°F) and peaking at 31°C (88°F). Rainfall is significantly less in March, with only 25 mm (1.0 in) spread across just 5 days, and a slightly lower humidity of 79%. For a more detailed look at March weather specifics, visit Lamu weather in March.
Comparing the weather in September and April reveals some notable differences. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 27°C (81°F), with an average of 26°C (78°F). The month experiences significant humidity at 83% and receives 62 mm (2.5 inches) of rainfall over 18 days. In contrast, April tends to be warmer, with temperatures ranging from a minimum of 25°C (78°F) to a higher maximum of 31°C (87°F) and an average of 28°C (83°F). This month also sees increased precipitation, with 144 mm (5.7 inches) over 23 days, although the humidity is slightly lower at 76%. For more detailed information, you can check Lamu weather in April.
In comparing the weather between September and May, both months feature warm temperatures, with September showing a range of 24°C (75°F) to 27°C (81°F) and an average of 26°C (78°F). May, however, is slightly warmer, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 30°C (86°F) and an average of 27°C (80°F). Notably, May experiences significantly more precipitation, with 365 mm (14.4 in) recorded over 28 days, while September has just 62 mm (2.5 in) spread over 18 days. Humidity levels are comparable, with September at 83% and May at 81%. For more detailed insights on the weather in May, you can visit Lamu weather in May.
In comparing the weather of September and June, both months exhibit relatively warm temperatures, with September averaging 26°C (78°F) and June slightly warmer at 26°C (79°F). The maximum temperatures are also comparable, with June peaking at 28°C (83°F) while September reaches a high of 27°C (81°F). However, June experiences significantly more precipitation, with 99 mm (3.9 in) over 21 days, compared to September's 62 mm (2.5 in) over 18 days. Both months maintain a consistent humidity level of 83%, creating a similarly muggy experience. For a closer look at June weather specifics, you can check Lamu weather in June.
When comparing the weather in September and July, both months exhibit relatively warm temperatures, with September seeing a minimum of 24°C (75°F) and an average of 26°C (78°F), while July has slightly cooler temperatures with a minimum of 23°C (73°F) and an average of 25°C (78°F). Interestingly, both months have maximum temperatures reaching up to 27°C (81°F in September and 82°F in July), indicating a similar warm climate throughout. In terms of precipitation, September experiences 62 mm (2.5 in) over 18 days, whereas July has a similar amount of rainfall at 64 mm (2.5 in) but over 20 days. Humidity levels are comparable too, with September at 83% and July at 82%. For more detailed insights into July weather specifically, you can check Lamu weather in July.
In comparing the weather between August and September, we see a slight rise in temperatures, with September recording a minimum of 24°C (75°F) and an average of 26°C (78°F), compared to August's minimum of 23°C (74°F) and average of 25°C (78°F). Both months have the same maximum temperature of 27°C (81°F). However, September experiences a bit more rain, totaling 62 mm (2.5 in) over 18 days, while August has slightly less precipitation at 55 mm (2.2 in) over 17 days. Humidity levels also increase slightly in September to 83%, compared to August's 81%. For more detailed information, you can check Lamu weather in August.
In September, the weather typically features minimum temperatures around 24°C (75°F), with an average of 26°C (78°F) and a maximum of 27°C (81°F). The month experiences rainfall totaling 62 mm (2.5 inches) over 18 days, accompanied by high humidity of 83%. In contrast, October sees a slight increase in temperatures, with similar minimums of 24°C (76°F), but an average rise to 26°C (80°F) and a maximum reaching 28°C (83°F). However, precipitation climbs significantly to 101 mm (4.0 inches) over the same number of rainy days, maintaining the humidity level at 83%. For more detailed information, check out Lamu weather in October.
September and November both feature warm temperatures, but November tends to be slightly hotter overall. In September, the average temperature hovers around 26°C (78°F), with daily highs reaching up to 27°C (81°F). In contrast, November showcases a warmer average of 27°C (81°F), peaking at 30°C (86°F). Precipitation is fairly common in both months, with September experiencing 62 mm (2.5 in) over 18 days and November bringing slightly more at 70 mm (2.8 in) across 14 days. Additionally, humidity remains high in both months, but slightly less in November at 80% compared to September's 83%. For a more detailed look at November weather, check out Lamu weather in November.
In September, the weather tends to be warm and humid, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 27°C (81°F) and an average of 26°C (78°F). The month experiences significant rainfall, with around 62 mm (2.5 in) of precipitation over 18 days, resulting in a humidity level of 83%.
In contrast, December brings slightly warmer temperatures, with a minimum of 25°C (77°F), an average of 28°C (82°F), and a maximum of 30°C (87°F). Rainfall decreases significantly to just 33 mm (1.3 in) over 7 days, and overall humidity drops to 79%. For more detailed information, you can check Lamu weather in December.
As September unfolds in Lamu, visitors experience a unique blend of warm temperatures and increased humidity, creating a vibrant atmosphere distinct from other months. The average warmth—hovering around 26°C (78°F)—is complemented by a noticeable jump in precipitation, with rain making its presence felt for nearly two-thirds of the month. This shift fosters lush landscapes and nourishes the local ecosystems, setting the stage for a captivating transformation. While September may feature more rainy days, the charm of Lamu remains undeniable, making it a perfect time for those who relish the island's serene beauty. To learn more about what to expect throughout the year, explore Lamu Climate.