September Weather in Ithaki, Greece

Last updated: August 21, 2025

September in Ithaki, Greece offers a delightful mix of warm temperatures and refreshing breezes. With maximum highs reaching 28°C (82°F) and an average of 24°C (76°F), the weather remains ideal for exploring the island’s stunning landscapes. Nights cool down pleasantly, dipping to a minimum of 18°C (64°F), perfect for evening strolls. Although the month sees about 49 mm (1.9 in) of rain over just 4 days, humidity hovers at a comfortable 56%, ensuring that visitors can enjoy the beauty of Ithaki in a temperate climate. Whether you're lounging by the sea or venturing into the hills, September is a wonderful time to experience this charming destination.

September Temperature in Ithaki

As summer fades, September in Ithaki, Greece offers a delightful transition with temperatures that balance warmth and comfort. The month kicks off with minimums around 18°C (64°F), gradually peaking at a pleasant 28°C (82°F). This range reflects a continued embrace of summer's warmth, with the average temperature reaching a cozy 24°C (76°F), inviting outdoor activities and exploration. September’s mild climate not only allows for swimming in the azure waters but also provides the perfect backdrop for leisurely strolls through picturesque villages, making it an ideal time for visitors to enjoy the beauty of this enchanting island before autumn takes hold.

September Weather in Ithaki: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ithaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ithaki, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec545556596571767975696458
Data source: Temperature data for Ithaki generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ithaki

In September, Ithaki experiences a noteworthy shift in precipitation, with a total of 49 mm (1.9 in) of rainfall spread across four days. This amount marks a clear increase from the nearly dry summer months of July and August, when just a mere 13 mm (0.5 in) and 5 mm (0.2 in) fell, respectively. The moderate September rainfall signals the transition towards the wetter autumn months, as it precedes the more significant precipitation seen in October and November, which receive 121 mm (4.8 in) and 225 mm (8.8 in), respectively. Thus, September serves as a gentle precursor, hinting at the replenishment of the island's lush landscapes after the dry summer, while still offering ample opportunities for visitors to enjoy more temperate weather.

September Precipitation Trends in Ithaki

The chart displays monthly precipitation patterns in Ithaki, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Ithaki, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec179966331162313549121225204
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Ithaki

As summer fades into autumn, September in Ithaki, Greece marks a subtle shift in humidity levels. After basking in the warmth of August, which enjoys a low humidity of just 47%, September sees a rise, bringing the humidity back up to 56%. This slight increase transitions the island from the dry heat of summer to the more comfortable atmosphere of fall. Notably, this month retains a relatively moderate humidity level compared to the wetter months of the year, with October and the subsequent months often reaching 70% or higher. Thus, September serves as a perfect bridge, encapsulating the lingering warmth of summer while gently ushering in the refreshing allure of autumn.

September Average Humidity in Ithaki

This chart illustrates the average monthly humidity levels in Ithaki, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Ithaki is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%76%70%72%60%56%47%56%70%80%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ithaki

As summer fades into early autumn, September in Ithaki, Greece, still boasts a striking UV Index of 8, classified as very high. This indicates that while the days are gradually shortening, sunlight remains intense, necessitating protective measures during outdoor activities. With a burn time of just 15 minutes, it's essential to be mindful of sun exposure, similar to the peak summer months of June through August, where the UV Index also reached 10. As the year transitions from the intense summer sun to the subtler autumn glow, the UV levels drop slightly in October to 6, suggesting a trend of decreasing intensity. For more detailed information, visit Ithaki UV Index.

Maximum UV Index Levels in Ithaki for September

The chart shows the monthly maximum UV Index (UVI) for Ithaki in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Ithaki typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891010108643
Data source: Ithaki September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Ithaki

As summer gracefully transitions into fall, September in Ithaki, Greece continues to bask in a generous 347 hours of sunshine, marking a slight decline from the peak of 422 hours in July but remaining well above the year’s beginning. This month captures the essence of Mediterranean warmth, allowing visitors to enjoy lingering beach days and stunning sunsets without the sweltering heat of the height of summer. The sunshine steadily tapers down, reflecting a seasonal shift that still offers plenty of outdoor adventures. Ithaki delights in this golden period, where mild temperatures and vibrant landscapes create an inviting atmosphere for both locals and travelers alike, making it a perfect late-summer getaway.

Monthly Sunshine Duration in Ithaki: September Highlighted

The September sunshine duration represents the total number of hours Ithaki experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec209h262h334h349h400h410h422h395h347h314h267h250h
Data source: Ithaki September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ithaki During September

September in Ithaki, Greece, offers a delightful 74% chance of sunny weather, making it a fantastic time for both relaxation and exploration. As summer draws to a close, the sun-soaked days of July and August gradually taper off, yet September still enjoys a significant amount of sunshine, ideal for enjoying the island’s stunning landscapes and crystal-clear waters. This transition month invites visitors to relish the remnants of summer warmth before the cooler autumn months set in. While the likelihood of sunny days decreases as the year progresses, September remains a vibrant choice for outdoor enthusiasts seeking to bask in the beauty of Ithaki’s idyllic scenery.

Percentage of Sunny Days in September in Ithaki

The chart illustrates the percentage of sunny days in Ithaki throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ithaki experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec34%64%59%57%69%86%97%95%74%54%34%53%
Data source: Ithaki September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ithaki in September

As summer transitions to autumn in Ithaki, Greece, September witnesses a gentle decline in daylight, with the sun gracing the island for 12 hours each day. This marks a shift from the longest days of June, July, and August, which enjoyed a full 14 hours of daylight. As the months progress, daylight gradually diminishes, with October further reducing to 11 hours and November to 10 hours. The shift from the vibrant summer days to the more tempered light of fall creates a serene backdrop for exploring Ithaki’s rich landscapes and charming villages, making September a delightful time for both locals and visitors to soak in the island's beauty before winter cloaks the region.

Average Daylight Hours in Ithaki for September

The chart illustrates the variation in daylight duration in Ithaki throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 50m10h 46m11h 58m13h 12m14h 14m14h 45m14h 29m13h 34m12h 23m11h 9m10h 5m9h 32m
Data source: Ithaki daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ithaki

As summer gracefully gives way to autumn, September winds in Ithaki, Greece, remain gentle and serene, with an average speed of 4.4 m/s (10 mph), mirroring the calmness of August. This period is characterized by a subtle consistency in wind patterns, creating a perfect backdrop for leisurely coastal strolls and tranquil boat rides. However, a noticeable shift is on the horizon; as the month transitions into October, wind speeds begin to pick up to 6.3 m/s (14 mph), signaling the arrival of more invigorating breezes. Throughout the year, it's clear that the winds in Ithaki start brisk in January and gradually temper towards the summer months, before ramping up again in the fall, guiding you from the warmth of summer into the invigorating embrace of autumn.

Average September Wind Speed in Ithaki

The chart displays monthly wind speed patterns in Ithaki, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec8.65.65.25.55.14.14.74.44.4 m/s6.36.87.1
Data source: Ithaki September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ithaki Compares to Other Months

Weather in Ithaki varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ithaki, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present stark contrasts in weather conditions. In September, temperatures range from a mild 18°C (64°F) at night to a warm average of 24°C (76°F) during the day, peaking at 28°C (82°F). The month experiences moderate rainfall with about 49 mm (1.9 in) over just 4 days and a comfortable humidity level of 56%. Conversely, January ushers in winter with much cooler temperatures, swinging from a chilly minimum of 3°C (38°F) to an average of 12°C (54°F), and a maximum of 19°C (66°F). This month is significantly wetter, receiving 179 mm (7.1 in) of precipitation over 14 days, resulting in higher humidity levels at 84%. For a more detailed look at the weather in January, check out Ithaki weather in January.

September and February present starkly contrasting weather conditions. In September, temperatures range from a pleasant minimum of 18°C (64°F) to a warm maximum of 28°C (82°F), with an average of 24°C (76°F). The month experiences relatively low precipitation, totaling 49 mm (1.9 in) over just four days, and the humidity sits at a comfortable 56%. In contrast, February is significantly cooler, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 17°C (63°F) and an average of 13°C (55°F). This month sees more rainfall, accumulating 96 mm (3.8 in) across ten days, and higher humidity at 78%. For a closer look at the weather specifics during February, you can refer to Ithaki weather in February.

September and March exhibit contrasting weather patterns. In September, temperatures are noticeably warmer, with an average of 24°C (76°F) and a maximum reaching 28°C (82°F), accompanied by relatively moderate humidity levels at 56%. In contrast, March showcases a cooler climate, with temperatures averaging only 13°C (56°F) and highs of 17°C (63°F). This month experiences a higher frequency of precipitation, occurring over 10 days and totaling 63 mm (2.5 in), compared to September's 49 mm (1.9 in) over just 4 days. Additionally, March has a significantly higher humidity level of 75%. For those interested in more specific conditions, you can check Ithaki weather in March.

September and April present contrasting weather patterns. In September, temperatures exhibit a comfortable range, with minimums around 18°C (64°F) and maximums peaking at 28°C (82°F), while average temperatures hover at about 24°C (76°F). The month experiences moderate rainfall, totaling 49 mm (1.9 in) across 4 days, with humidity level at a comfortable 56%. In contrast, April features cooler conditions, with minimum temperatures dropping to 11°C (52°F) and maximums reaching 23°C (74°F). Average temperatures linger at 15°C (60°F), and while rainfall is less at 31 mm (1.2 in), it spreads over 5 days. Additionally, April sees higher humidity levels at 70%, making it feel cooler despite lower average temperatures. For more detailed insights, you can check Ithaki weather in April.

In comparison to September, May tends to have cooler temperatures, with average highs reaching only 24°C (75°F) compared to September's maximum of 28°C (82°F). The minimum temperatures in May are also lower, starting at 13°C (55°F) versus 18°C (64°F) in September. Precipitation is significantly less in May, with only 16 mm (0.6 in) over 3 days, whereas September sees 49 mm (1.9 in) across 4 days. However, humidity levels are higher in May at 72%, compared to September's 56%. For a closer look at the weather specifics in May, you can visit Ithaki weather in May.

In September, the weather in Ithaki is slightly warmer than in June, with average temperatures reaching 24°C (76°F) compared to June's average of 22°C (71°F). The maximum temperatures in both months are similar, hitting 28°C (82°F) in September and 27°C (82°F) in June. However, September experiences more precipitation, totaling 49 mm (1.9 in) over 4 rain days, whereas June is generally drier with only 23 mm (0.9 in) across 2 days. Humidity levels are also a bit higher in June at 60%, compared to September's 56%. For more detailed information, you can check Ithaki weather in June.

In comparing the weather between September and July, we see some notable differences. September experiences slightly cooler temperatures with a minimum of 18°C (64°F) and maintains an average of 24°C (76°F), similar to July, which has a minimum of 20°C (68°F) and shares the same average temperature. However, July boasts a higher maximum temperature, reaching 28°C (83°F) compared to September's peak at 28°C (82°F). Additionally, September tends to be wetter, with 49 mm (1.9 in) of precipitation over 4 days, whereas July is drier, receiving only 13 mm (0.5 in) over just 1 day. Notably, humidity levels remain consistent at 56% for both months. For more specific details, check out Ithaki weather in July.

In September, temperatures tend to be slightly cooler compared to August, with a minimum of 18°C (64°F) and an average of 24°C (76°F) compared to August's minimum of 23°C (73°F) and average of 26°C (79°F). While September enjoys a more moderate climate, it also sees an increase in precipitation, receiving 49 mm (1.9 in) over 4 days, contrasting sharply with August’s minimal 5 mm (0.2 in) over just 1 day. Additionally, humidity is higher in September at 56%, compared to 47% in August, making the latter generally feel drier and warmer. For more details on weather conditions during August, you can check out Ithaki weather in August.

September typically enjoys warmer temperatures with an average of 24°C (76°F), while October sees a slight drop to 21°C (70°F). The maximum temperatures are also higher in September, reaching up to 28°C (82°F), compared to October's peak of 26°C (79°F). However, October brings significantly more rainfall, with precipitation increasing from 49 mm (1.9 in) over 4 days in September to 121 mm (4.8 in) over 8 days in October. Additionally, humidity levels rise in October to 70%, up from 56% in September, contributing to a more damp atmosphere. For more information, check Ithaki weather in October.

September typically features warmer temperatures, with daily averages around 24°C (76°F) and highs reaching up to 28°C (82°F). The month experiences relatively low rainfall, with only 49 mm (1.9 in) falling over about four days, alongside a moderate humidity level of 56%. In contrast, November presents a cooler climate, with average temperatures dropping to 18°C (64°F) and maximum temperatures peaking at 23°C (73°F). This month is marked by significantly higher precipitation, totaling 225 mm (8.8 in) spread over 14 days, and an increase in humidity to 80%. For more detailed information, you can visit Ithaki weather in November.

September and December present strikingly different weather patterns. In September, temperatures are much warmer, with minimums around 18°C (64°F) and averages reaching up to 24°C (76°F), accompanied by relatively low humidity at 56% and only a few days of rain totaling 49 mm (1.9 in). In contrast, December brings a notable drop in temperature, where minimums fall to 8°C (46°F) and averages hover at 15°C (58°F), alongside much higher humidity at 83%. Precipitation also sees a significant increase, with December receiving 204 mm (8.0 in) over 16 rainy days. For more detailed insights into December weather, you can check Ithaki weather in December.

Compare Ithaki's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ithaki

As summer transitions into autumn, September offers a delightful blend of warm days and cooler evenings on Ithaki. With average temperatures hovering around a pleasant 24°C, it’s an ideal time to enjoy the island's stunning landscapes without the intense heat of the peak summer months. While the humidity remains moderate and precipitation is minimal—with only a few rainy days—this month creates a comfortable atmosphere for outdoor activities. For those looking to explore Ithaki's unique charm, this is a remarkable time to visit. To further understand the island's overall climate, check out Ithaki Climate.