Last updated: August 21, 2025
September in Fira, Greece offers a delightful Mediterranean climate, where temperatures typically range from a comfortable 20°C (68°F) to a pleasant 27°C (82°F). With an average temperature of 24°C (75°F), it's the perfect time to explore the stunning landscapes. Not only is the month characterized by zero precipitation, but also a moderate humidity level of 70%, ensuring clear skies and vibrant sunsets without the worry of rain. This combination makes September an ideal period for travelers seeking to soak in the beauty of Santorini in its most enchanting form.
In September, Fira, Greece, offers a delightful transition into autumn, with temperatures that create a wonderfully pleasant atmosphere. The month typically sees a minimum temperature of around 20°C (68°F), which gradually rises to an average of 24°C (75°F) and a comfortable maximum of 27°C (82°F). This warm weather is ideal for exploring the island’s stunning landscapes and charming villages, as the summer crowds begin to thin out. With these balmy temperatures, September stands out as an excellent time to experience the beauty of Fira without the heat of peak summer months, allowing visitors to enjoy both relaxation and adventure in perfect harmony.
September in Fira, Greece, marks a notable transition as summer wanes, with precipitation levels remaining minimal at just 2 mm (0.1 in). This slight uptick in rainfall, although still meager, is a continuation of the dry spell that characterizes the preceding summer months, where July and August recorded virtually no rain. Interestingly, September is one of the few months this year to experience zero precipitation days, reflecting the region's predominantly arid climate. As the landscape prepares for the autumn season, this month signifies a gentle easing into wetter conditions, with October expected to bring an increase in rainfall to 14 mm (0.5 in) over two days, setting the stage for the more consistent precipitation that follows in the fall months.
In September, Fira, Greece experiences a slight dip in humidity, averaging around 70%, transitioning from the summer months where it peaks at 66% in August. This subtle increase in moisture as the city shifts into autumn provides a comfortable atmosphere for visitors, balancing the warm temperatures with refreshing breezes. Notably, humidity trends in Fira reveal a generally stable pattern throughout the year, fluctuating between 66% and 81%, with the highest levels peaking in late spring. As autumn approaches, humidity levels stabilize around the mid-70s, making September an ideal time to enjoy the beauty of this historic island before winter sets in.
As summer fades into autumn, September in Fira, Greece, continues to showcase a very high UV Index of 8, requiring vigilance under the sun with a burn time of just 15 minutes. This trend reflects the tail end of a sun-soaked season, where UV levels peaked at 10 during the heart of summer months. While September slightly lowers the intensity compared to the peak summer months, the UV Index remains substantially elevated, demanding protective measures for outdoor enthusiasts. Make sure to plan accordingly and stay informed with more details at Fira UV Index.
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As summer gently transitions into autumn, September in Fira, Greece still basks in the warm glow of the sun, boasting 350 hours of sunshine. This delightful month captures the tail end of the high summer, showcasing a gradual decline from the record sunlit days in July and June, where hours soared to 424 and 412 respectively. Although September sees a slight dip, it remains markedly brighter than the earlier months, like January's mere 218 hours and November's 277 hours. This trend reflects a sweet balance as visitors enjoy the fading summer warmth, while the vibrant landscapes of Cycladic architecture glow under the soft autumn light. The enchanting sunsets become a beautiful backdrop, inviting those who seek the lingering embrace of summer before the cooler months set in.
In Fira, Greece, September boasts an impressive 95% likelihood of sunny weather, making it one of the most delightful months to soak up the Mediterranean sun. Following the peak of summer in August, which enjoys a perfect 100% sunshine, September maintains a robust chance for clear skies, indicating that the warm, sunny days linger just a little longer. As the year progresses, we observe a noticeable trend: from a modest 45% in January to near certainty by midsummer, the reliable sunshine becomes almost unwavering, peaking in the heart of summer. This sunny disposition in September is ideal for travelers looking to bask in the beauty of the Cycladic islands, with the warm weather still very much present before the cooler autumn days set in.
As September unfolds in Fira, Greece, daylight begins to gently wane, offering approximately 12 hours of light—a graceful transition from the sun-drenched peak of summer. Following the long, bright days of July and August, which boast up to 14 hours of daylight, this month signals the onset of autumn, where daylight gradually decreases. The trend of lengthening daylight from January to June reaches its zenith mid-summer, before naturally tapering off into the cooler months. With October bringing further reduction to around 11 hours, September serves as a lovely bridge between the warm vibrancy of summer and the serene embrace of fall, inviting visitors to savor the beautiful twilight hour and the tranquil charm of Fira.
In September, the wind in Fira, Greece picks up a refreshing pace, averaging 8.1 m/s (18 mph)—a notable increase from the summer months. This brisk breeze not only carries the last whispers of summer but also signals the transition into autumn. As the winds shift, we see a pattern where activity spikes in early fall, with September holding the highest average wind speed since July. This invigorating wind enhances outdoor experiences, making it an ideal time for exploring the stunning caldera views or enjoying a sunset by the sea. As the month progresses, the winds gradually ease into October, yet its lively gusts in September undoubtedly embody the spirit of the island, blending warmth with a hint of crispness.
Weather in Fira varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Fira, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present striking contrasts in weather conditions. In September, temperatures are pleasantly warm, with a minimum of 20°C (68°F) and an average of 24°C (75°F), peaking at a max of 27°C (82°F). The month is characterized by its low precipitation of just 2 mm (0.1 in) and no rain days, along with a humidity level of 70%, making it an ideal time for outdoor activities. In contrast, January brings cooler temperatures, with a minimum of 5°C (40°F) and an average of 13°C (56°F), reaching a maximum of 20°C (68°F). The month sees significantly more rainfall, totaling 76 mm (3.0 in) over 11 days, and a slightly higher humidity of 77%. For more detailed information, you can check out Fira weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures are pleasantly warm, with minimums around 20°C (68°F) and an average of 24°C (75°F), while precipitation is minimal at just 2 mm (0.1 in) over no rainy days. This month enjoys a relatively high humidity level of 70%. In contrast, February sees much cooler temperatures, with averages dropping to 14°C (58°F) and a maximum of 19°C (66°F). Additionally, it's a wetter month, with 58 mm (2.3 in) of precipitation spread over 8 days, and humidity rising slightly to 76%. For more detailed insights, you can check Fira weather in February.
In September, the weather is noticeably warmer, with average temperatures ranging from a comfortable 20°C (68°F) at night to a high of 27°C (82°F) during the day. This month experiences very little precipitation, averaging only 2 mm and boasting zero rainy days, along with a humidity level of 70%. In contrast, March sees a significant drop in temperatures, with averages from a chilly 6°C (44°F) at night to a maximum of 18°C (65°F) during the day. Rainfall increases substantially in March, with about 44 mm spread over six days, and humidity rises slightly to 77%. For more details on the weather in March, you can check Fira weather in March.
September and April present contrasting weather conditions. In September, temperatures are notably warmer, with averages around 24°C (75°F) and maximums reaching 27°C (82°F), while April sees cooler temperatures, averaging 16°C (61°F) and peaking at 20°C (69°F). Additionally, September boasts a dry atmosphere with little to no precipitation (only 2 mm), whereas April experiences more rainfall, accumulating about 17 mm over two days. Humidity levels are also slightly lower in September at 70% compared to April's 77%. For more detailed information, you can visit Fira weather in April.
September and May both enjoy relatively mild temperatures, but September tends to be warmer, with average temperatures reaching 24°C (75°F) compared to May's 19°C (67°F). In September, the maximum temperature can reach up to 27°C (82°F), while May peaks at 24°C (75°F). Additionally, September experiences lower humidity at 70%, compared to May's higher humidity level of 81%. Precipitation is also minimal in both months, but May sees slightly more with 4 mm (0.2 in) compared to September's 2 mm (0.1 in). For more detailed information about the weather in Fira during May, you can check Fira weather in May.
In comparing the weather between September and June, both months exhibit fairly mild temperatures, but September feels slightly warmer overall. September boasts a minimum temperature of 20°C (68°F) and an average of 24°C (75°F), while June has a slightly lower minimum of 18°C (65°F) and an average of 23°C (73°F). The maximum temperatures in both months are identical at 27°C (80°F). Interestingly, September experiences a bit less precipitation with just 2 mm (0.1 in) compared to June's 3 mm (0.1 in), although both months experience rainfall on zero days. Humidity levels are also higher in June at 77%, compared to 70% in September. For more details on June weather, you can visit Fira weather in June.
In comparison to July, September boasts slightly cooler temperatures, with average highs of 27°C (82°F) compared to July's 28°C (83°F). The minimum temperatures are also a bit lower in September, starting at 20°C (68°F) versus July's 22°C (72°F). Both months experience very little precipitation, with September only receiving 2 mm (0.1 in) and July remaining completely dry at 0 mm (0.0 in). Humidity levels are similar, hovering around 70-71%. For more detailed information on July weather, you can visit Fira weather in July.
In comparing the weather of September and August, September typically presents slightly cooler temperatures, with a minimum of 20°C (68°F) and an average of 24°C (75°F), compared to August's warmer temperatures that range from a minimum of 22°C (73°F) to an average of 25°C (77°F). September also sees a maximum of 27°C (82°F), which is notably lower than August's peak of 30°C (86°F). Both months experience minimal precipitation, with just 2 mm in September and 1 mm in August, and neither month has recorded any rainy days. Humidity levels are slightly higher in September at 70%, compared to 66% in August. For more detailed weather information, you can check Fira weather in August.
In September, the weather is generally warmer, with average temperatures ranging from a comfortable 20°C (68°F) at night to a pleasant 27°C (82°F) during the day. It boasts very little precipitation, resulting in dry conditions and a humidity level of around 70%. In contrast, October brings slightly cooler temperatures, averaging between 16°C (61°F) and 26°C (79°F). This month also experiences a noticeable increase in rainfall, with about 14 mm (0.5 in) over two days, and a rise in humidity to 76%. For more detailed information, you can check out Fira weather in October.
In September, the weather is generally warm and dry, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 27°C (82°F) and an average of 24°C (75°F). The month sees minimal precipitation, with only 2 mm (0.1 in) recorded over zero rainy days, and humidity levels at a comfortable 70%.
Contrastingly, November brings cooler temperatures, with a minimum of 13°C (55°F) and a maximum of 23°C (73°F), resulting in an average temperature of 18°C (65°F). This month is significantly wetter, experiencing 41 mm (1.6 in) of rainfall over 5 days, and humidity increases to 77%. For more detailed information, check out Fira weather in November.
September's weather is characterized by warmer temperatures, with a minimum of 20°C (68°F) and a pleasant average of 24°C (75°F), peaking at a maximum of 27°C (82°F). The month experiences very little rainfall, with only 2 mm (0.1 in) over the course of zero days, and maintains a comfortable humidity level of 70%. In contrast, December brings a significant drop in temperatures, with lows of 10°C (50°F) and an average of 15°C (60°F), reaching a maximum of 20°C (68°F). Rainfall increases dramatically in December, totaling 72 mm (2.8 in) over 12 days, and the humidity rises to 78%. For more specific weather details, you can check Fira weather in December.
As summer gently transitions into autumn, September in Fira offers a delightful reprieve from the sweltering heat of the preceding months. With average temperatures hovering around a pleasant 24°C (75°F), it's a perfect time to explore the stunning landscapes without the throngs of tourists. Notably, the month sees virtually no precipitation, maintaining that inviting atmosphere to fully enjoy the breathtaking sunsets and charming streets. The humidity sits at a comfortable 70%, allowing for both relaxed sightseeing and tranquil evenings by the sea. For those considering a visit, September serves as a splendid bridge between the hot summer days and cooler autumn nights, making it an ideal time for those looking to experience the beauty of Fira. Discover more about what to expect with the changing seasons by exploring Fira Climate.