Last updated: August 31, 2025
September in Sidi Bou Said, Tunisia, offers a delightful blend of warmth and occasional rain as summer transitions into autumn. The maximum temperature can soar to a sweltering 36°C (98°F), while the average temperature settles around a comfortable 25°C (78°F). Nights bring a refreshing coolness with lows dipping to 16°C (62°F). Rainfall is moderate, with an accumulated 47 mm (1.8 in) over about 6 days, ensuring lush landscapes and a vibrant atmosphere. Additionally, humidity levels sit at a balmy 72%, enhancing the coastal charm of this picturesque seaside town.
As September unfolds in Sidi Bou Said, Tunisia, the temperatures begin to soften from the scorching summer months, yet warmth still lingers in the air. With a minimum temperature of 16°C (62°F) and an average of 25°C (78°F), the month offers a pleasant retreat from the heat. The maximum temperature peaks at 36°C (98°F), indicating that summer's embrace hasn't completely released its grip just yet. This transitional period is marked by a comfortable climate, making it an ideal time for visitors to explore the charming blue and white streets of Sidi Bou Said, where the gentle warmth creates a perfect backdrop for leisurely strolls and vibrant sunsets. As autumn approaches, the gradual shift promises more moderate temperatures ahead, blending the best of both seasons.
In September, Sidi Bou Said experiences a notable increase in precipitation, with 47 mm (1.8 in) of rain over approximately 6 days. This marks a significant uptick from the drier summer months, particularly July, which saw virtually no rainfall. The return of rain in September not only signals a transition towards the wetter autumn season but also contributes to the region's lush landscapes. Interestingly, this month mirrors the precipitation levels of both November and December, reinforcing a pattern of consistent moisture as the year progresses. The trend indicates a shift from the parched summer, making September a refreshing prelude to the more substantial rains that follow in the later months.
In September, Sidi Bou Said experiences a humidity level of 72%, which aligns closely with the mild conditions seen in the preceding months. Throughout the summer, humidity dips from 71% in June to 69% in both July and August, suggesting a comfortable dryness that is characteristic of the peak season. As autumn approaches, September's humidity reflects a slight uptick, returning to a more moderate zone. Overall, the month showcases the region's gentle transition from the drier summer months back into the more humid embrace of fall, thus maintaining a balanced climatic experience for residents and visitors alike.
As September rolls into Sidi Bou Said, Tunisia, the UV Index remains highly significant, registering at 8 and categorized as very high. This indicates that sun exposure should be approached with caution, as the burn time is limited to just 15 minutes. Following the peak summer months when the UV Index soared to an extreme 11 in June, a slight decrease is noted in September, yet the need for sun protection remains critical. This month continues the trend of elevated UV levels seen through the summer, reminding residents and visitors alike to stay sun-safe. For more details on UV levels throughout the year, check out the comprehensive guide at Sidi Bou Said UV Index.
UV Risk Categories
As summer gradually yields to autumn in Sidi Bou Said, September continues to bask in the warmth of sunshine, boasting 334 hours of radiant daylight. This month marks a gentle transition, retaining a significant amount of sunshine reminiscent of the bright summer months, yet it shows a distinct decline from the peak of 415 hours experienced in July. With each passing month, sunlight diminishes, from June's 394 hours to 385 hours in August, and finally settling at 334 hours in September. This cumulative pattern not only leaves the skies vibrant and inviting but also heralds the upcoming cooler days, making it a tranquil time to enjoy the picturesque landscapes and rich cultural vibes of this enchanting coastal town.
September in Sidi Bou Said, Tunisia, offers a 58% chance of sunny weather, striking a pleasing balance following the sun-soaked months of July and August, which boast impressive probabilities of 92% and 88%, respectively. As summer transitions to fall, the likelihood of sunshine dips slightly, yet remains favorable compared to other months like April and October. This trend suggests that while September welcomes the onset of cooler breezes, it still beautifully invites visitors to bask in warm Mediterranean rays, making it an enticing time for outdoor adventures. Whether wandering through the charming streets or enjoying stunning seaside views, September holds promising potential for sunshine lovers.
In Sidi Bou Said, Tunisia, September marks a gentle transition from the long, sun-soaked days of summer to the cooler embrace of autumn. With 12 hours of daylight, this month experiences a slight dip following the peak summer months of July and August, which both bask in 14 hours of light. The gradual shift signals nature's readiness for change, as daylight hours decrease, dropping to 11 hours in October and continuing to contract through the winter months. September's comfortable balance of light invites locals and visitors alike to savor the lingering warmth of summer, while also hinting at the cozy atmosphere that autumn brings.
As summer transitions to autumn in Sidi Bou Said, the September winds gently sweep through the coastal town at an average speed of 3.6 m/s (8 mph). This marks a slight increase from the languid breezes of August, which averaged just 3.0 m/s (7 mph). The winds in September mirror trends observed in the late spring and early summer months, maintaining a consistent, mild allure that beckons locals and tourists alike to savor the changing seasons. Notably, this month's wind speed aligns closely with those in the colder months of October and November, suggesting a gradual cooling trend that accompanies the onset of fall. The pleasant winds are a reminder of Sidi Bou Said's unique charm, as the landscape transforms with the vibrant hues of autumn.
Weather in Sidi Bou Said varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sidi Bou Said, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit distinct weather patterns, reflecting the transition from late summer to winter. September boasts much warmer temperatures, with minimums of 16°C (62°F) and maximums reaching up to 36°C (98°F), while January's temperatures are notably cooler, ranging from a minimum of 4°C (39°F) to a maximum of 23°C (75°F). Although both months experience roughly the same number of rainy days, with September receiving slightly more precipitation at 47 mm (1.8 in) compared to January's 28 mm (1.1 in), the humidity levels remain comparable at around 72-73%. For a more in-depth look at January weather in the region, check out this link: Sidi Bou Said weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a mild 16°C (62°F) to a hot 36°C (98°F), with an average of 25°C (78°F). This month also experiences a higher level of humidity at 72% and sees about 47 mm (1.8 in) of rain over six days. In contrast, February brings cooler conditions, with temperatures ranging from a low of 4°C (39°F) to a high of 24°C (75°F) and an average of only 13°C (55°F). Precipitation is slightly less at 34 mm (1.3 in) over the same number of days, while humidity remains comparable at 71%. For a detailed look at February weather, check out Sidi Bou Said weather in February.
When comparing the weather in September and March, it is clear that September tends to be much warmer. The average temperature in September reaches about 25°C (78°F), with highs soaring up to 36°C (98°F), while March sees a cooler average of 14°C (57°F) and a maximum of 27°C (80°F). Additionally, September experiences less precipitation, with 47 mm (1.8 in) over approximately 6 days, compared to March's 57 mm (2.2 in) spread over 8 days. Despite similar humidity levels of 72% in both months, the overall climate difference highlights March's crispness in contrast to September's warmth. For more detailed information about the weather in March, you can visit Sidi Bou Said weather in March.
In comparing the weather of September and April, September is characterized by significantly warmer temperatures, with minimums around 16°C (62°F) and maximums reaching up to 36°C (98°F). In contrast, April experiences cooler weather, with minimum temperatures dropping to 7°C (46°F) and maximums peaking at 27°C (82°F). Both months have similar precipitation levels—approximately 46–47 mm (1.8 in)—but September generally has fewer rainy days (6) compared to April's 8 days. Additionally, humidity in September averages 72%, slightly lower than April's 75%, indicating a more comfortable feel during the fall month. For more specific details about April weather in Sidi Bou Said, you can check this link: Sidi Bou Said weather in April.
In comparing the weather of September and May, September tends to be warmer with average temperatures reaching around 25°C (78°F), while May offers a cooler average of 20°C (68°F). September's maximum temperature can soar to 36°C (98°F), making it noticeably hotter than May, where the highest temperature typically caps at 35°C (95°F). Additionally, September experiences more precipitation with 47 mm (1.8 in) over about 6 days, compared to May's relatively drier conditions of 26 mm (1.0 in) over 4 days. Humidity levels are similar, hovering around 72% in September and slightly higher at 74% in May. For a closer look at May weather, you can check out Sidi Bou Said weather in May.
When comparing the weather in September and June, you'll notice that both months experience warm temperatures, with September averaging slightly higher at 25°C (78°F) compared to June's 24°C (76°F). However, June can reach maximum temperatures of up to 38°C (100°F), slightly higher than September's peak of 36°C (98°F). In terms of precipitation, September tends to be wetter, with 47 mm (1.8 in) over six days, while June sees only 10 mm (0.4 in) over just one day, indicating a much drier climate in June. The humidity is fairly consistent, with September at 72% and June at 71%. For more details on June weather, you can refer to Sidi Bou Said weather in June.
When comparing the weather in September and July, we find some notable differences. September features a more moderate temperature range, with a minimum of 16°C (62°F), an average of 25°C (78°F), and a maximum of 36°C (98°F). In contrast, July is hotter, with a minimum of 20°C (68°F), an average temperature of 28°C (82°F), and peaks reaching as high as 40°C (105°F). Additionally, September experiences more rainfall, with 47 mm (1.8 in) spread over 6 days, while July is much drier, receiving only 2 mm (0.1 in) with no rainy days at all. Humidity levels are fairly similar, with September at 72% and July slightly lower at 69%. For more details, you can check Sidi Bou Said weather in July.
In comparing the weather between September and August, we see notable differences in temperature and precipitation patterns. September typically has a minimum temperature of 16°C (62°F) and an average of 25°C (78°F), peaking at 36°C (98°F), while August is warmer with a minimum of 20°C (69°F), an average of 28°C (83°F), and maximum temperatures soaring to 43°C (110°F). Additionally, September experiences higher humidity levels at 72%, compared to August's 69%. Precipitation is also greater in September, with 47 mm (1.8 in) over six days, while August receives only 19 mm (0.7 in) over three days. For more details, you can check Sidi Bou Said weather in August.
In comparing the weather between September and October, September tends to be hotter with temperatures ranging from a minimum of 16°C (62°F) to a maximum of 36°C (98°F), averaging around 25°C (78°F). The month experiences relatively low precipitation at 47 mm (1.8 in) over 6 days, with humidity sitting at 72%. In contrast, October sees cooler temperatures with a minimum of 12°C (54°F) and a maximum of 32°C (90°F), averaging 21°C (70°F). However, it experiences increased rainfall of 84 mm (3.3 in) over 8 days and slightly higher humidity at 74%. For a more detail on October weather in the region, check Sidi Bou Said weather in October.
In comparing the weather between September and November, notable shifts in temperature and rainfall patterns emerge. September features warmer temperatures, with a minimum of 16°C (62°F) and an average high of 36°C (98°F), creating a hot and humid atmosphere with an average humidity of 72%. In contrast, November brings much cooler conditions, with a minimum temperature dropping to 9°C (48°F) and an average high of 28°C (83°F). While both months receive similar amounts of precipitation at 47 mm (1.8 in), November experiences slightly more rainy days, totaling 8 compared to September's 6. This change signifies a transition from late summer heat to the more temperate autumn weather characteristic of November. For a closer look at November's weather, you can check Sidi Bou Said weather in November.
In September, temperatures in Sidi Bou Said range from a mild 16°C (62°F) to a scorching 36°C (98°F), with an average of 25°C (78°F). The month experiences 47 mm (1.8 in) of precipitation over about 6 days, coupled with a relative humidity of 72%. In contrast, December sees much cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 21°C (70°F), averaging 13°C (56°F). Precipitation in December is slightly lower at 45 mm (1.8 in) across about 8 days, while humidity remains consistent at 72%. For more details on the December weather in Sidi Bou Said, check out the link: Sidi Bou Said weather in December.
As summer gives way to autumn, September in Sidi Bou Said brings a delightful transition characterized by warm temperatures and moderate humidity. With an average temperature hovering around 25°C, the weather is generally more comfortable compared to the sweltering heights of July and August. While the days can still reach up to a scorching 36°C, the evenings cool down nicely, offering a refreshing break. However, September also sees an increase in rainfall, with about six days of precipitation totaling 47 mm, making it one of the wetter months of the year. This unique blend of warmth and occasional showers makes September a charming time to experience the coastal beauty of Sidi Bou Said. For more detailed insights into the seasons here, check the Sidi Bou Said Climate.