September Weather in Marathonas, Greece

Last updated: August 21, 2025

September in Marathonas, Greece offers a delightful climate, with maximum temperatures reaching a sizzling 36°C (97°F) and an inviting average of 24°C (75°F). As summer begins to wane, the nights cool down to a refreshing minimum of 13°C (56°F). This month sees minimal rainfall, totaling only 23 mm (0.9 in) over about 3 days, providing plenty of opportunities for outdoor activities. The humidity level hovers around 58%, contributing to the comfortable yet warm atmosphere. Whether you're exploring historical sites or enjoying the stunning coastline, September is an ideal time to experience the beauty of Marathonas.

September Temperature in Marathonas

In September, Marathonas, Greece, experiences a delightful transition into autumn, while still basking in the warmth of summer. With minimum temperatures around 13°C (56°F) and average highs peaking at 36°C (97°F), this month offers a perfect blend of warmth and comfort. The average temperature settles at a pleasant 24°C (75°F), making it an ideal time for outdoor activities and exploring the stunning coastal scenery. As the month progresses, temperatures begin to cool slightly, hinting at the upcoming fall, yet the lingering summer heat ensures that you can still enjoy sun-soaked days. This remarkable warmth, combined with the gradual shift in climate, enhances the charm of Marathonas, inviting visitors to relish the beauty of Greece at one of its most inviting times of the year.

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

The chart illustrates September temperature patterns in Marathonas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marathonas, 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).
JanFebMarAprMayJunJulAugSepOctNovDec475053596976818175665952
Data source: Temperature data for Marathonas 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 Marathonas

In September, Marathonas, Greece, experiences a modest uptick in precipitation after the drier summer months, with 23 mm (0.9 in) of rainfall spread over just 3 days. This shift signals the onset of autumn, as the region transitions from the parched conditions of August, which recorded a mere 9 mm (0.3 in) across just 2 days. Historically, September’s precipitation remains relatively low compared to the wetter months of late autumn and winter, yet it plays a crucial role in rejuvenating the landscape, making way for the lush greenery that follows. As the year progresses, the steady increase in rainfall month by month paints a clear picture of the Mediterranean climate, characterized by its hot, dry summers and mild, wetter winters.

September Precipitation Trends in Marathonas

The chart displays monthly precipitation patterns in Marathonas, 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 Marathonas, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec75695752334219923405783
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Marathonas

September in Marathonas, Greece ushers in a refreshing change as humidity levels rise to 58%, a slight increase from the more arid summer months of 57% in July and 51% in August. This transition marks a gentle shift towards the more humid autumn months, which see a notable increase, peaking at 81% by December. The overall trend reveals that while the summer months provide a dry retreat, the onset of fall brings a mild return of humidity, creating a comfortable environment for both locals and visitors to enjoy the scenic beauty of this coastal gem. As the year progresses, September serves as a bridge between the vibrant, dry summer and the lush, humid winters of Marathonas, embodying the essence of changes in Greece's climate.

September Average Humidity in Marathonas

This chart illustrates the average monthly humidity levels in Marathonas, 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 Marathonas is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%78%76%70%71%61%57%51%58%73%79%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Marathonas

As summer transitions into autumn in Marathonas, Greece, the UV Index begins to show a gradual decline. In September, the UV Index stands at 8, maintaining a very high exposure category that requires caution, with only 15 minutes of unprotected sun exposure recommended to prevent burns. This follows a peak in the summer months, where the UV Index consistently hit 10, meaning that while temperatures may start to cool, the sun's intensity remains a significant concern. As the year progresses into October, the UV Index decreases to 7, signaling a shift towards lower UV exposure, but it’s important to stay vigilant. For more detailed insights on sun safety, visit Marathonas UV Index.

Maximum UV Index Levels in Marathonas for September

The chart shows the monthly maximum UV Index (UVI) for Marathonas 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 Marathonas typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468101010108743
Data source: Marathonas 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 Marathonas

In September, the sun continues to shine brightly in Marathonas, Greece, with an impressive 346 hours of sunlight, offering a perfect blend of warmth before the cooler months arrive. As summer winds down, the sunshine remains abundant, albeit slightly diminished from the peak of 426 hours in July. This month marks a gradual transition from the intense summer heat, yet it still retains a vibrant glow reminiscent of the sun-soaked days of August, which boasted 397 hours. The steady decline in sunlight hours from the summer peak to September’s cozy warmth highlights the enchanting allure of this Mediterranean gem, making it an ideal time for visitors to bask in the lingering summer vibes while enjoying the beautiful landscapes with fewer crowds.

Monthly Sunshine Duration in Marathonas: September Highlighted

The September sunshine duration represents the total number of hours Marathonas 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.
JanFebMarAprMayJunJulAugSepOctNovDec192h248h326h344h397h410h426h397h346h313h259h244h
Data source: Marathonas September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Marathonas During September

As summer transitions into autumn, September in Marathonas, Greece boasts a commendable 74% chance of sunny weather. This enduring warmth follows two exceptionally sunny months, July and August, where nearly all days sparkled under clear skies, achieving 94% and 93% likelihoods, respectively. With the weather still inviting in September, this month presents a lovely opportunity for sun-seekers, though the chance of sunshine dips compared to the peak of summer. As the year progresses, the probability of sunny days gradually declines, with October's chance falling to 46%. Therefore, if you're considering a sun-filled getaway, September remains a fantastic choice in this sun-kissed locale.

Percentage of Sunny Days in September in Marathonas

The chart illustrates the percentage of sunny days in Marathonas 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 Marathonas experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%53%52%52%68%70%94%93%74%46%34%48%
Data source: Marathonas September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Marathonas in September

In September, daylight in Marathonas, Greece begins to taper off, offering about 12 hours of sunlight—a slight decrease from the peak summer months. This transition marks the gradual shift from the vibrant light of summer, which boasts a maximum of 14 hours from June to August, to the shorter days of autumn. As the year progresses, daylight duration steadily declines, with October and November bringing even less light, reminiscent of the shorter days experienced in January and December. This seasonal rhythm not only highlights the beautiful cycle of nature but also beckons locals and visitors alike to savor the last warm rays of late summer before the cooler months set in.

Average Daylight Hours in Marathonas for September

The chart illustrates the variation in daylight duration in Marathonas throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 49m10h 45m11h 58m13h 12m14h 14m14h 46m14h 29m13h 34m12h 23m11h 9m10h 5m9h 32m
Data source: Marathonas daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Marathonas

As September settles in, Marathonas, Greece experiences a refreshing shift in its winds, with an average speed of 3.5 m/s (8 mph), making it one of the breeziest months of the year. This gentle increase in wind speed, compared to the more fluctuating calmer months of summer and spring, indicates a transition towards the autumn season. Interestingly, the wind's robust presence not only enhances the picturesque landscapes of the area but also invites outdoor activities, making it an ideal time for locals and tourists alike to revel in the beauty of nature while enjoying the invigorating breeze. As autumn unfolds, the winds remain steady, hinting at a vibrant season ahead.

Average September Wind Speed in Marathonas

The chart displays monthly wind speed patterns in Marathonas, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.33.33.12.72.62.23.43.13.5 m/s3.53.33.6
Data source: Marathonas September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Marathonas Compares to Other Months

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

September and January exhibit stark contrasts in weather conditions. In September, temperatures range from a mild 13°C (56°F) at night to a scorching 36°C (97°F) during the day, with an average of 24°C (75°F). The month experiences relatively low precipitation, totaling just 23 mm (0.9 in) over three days, and humidity levels are moderate at 58%. In contrast, January brings a much colder climate, with temperatures dipping to a minimum of -5°C (23°F) and averaging only 8°C (48°F), while reaching a maximum of 23°C (73°F). This winter month sees significantly higher rainfall, accumulating 75 mm (2.9 in) over ten days, and humidity rises to a higher level of 82%. For detailed insights into January's weather, you can explore Marathonas weather in January.

In September, temperatures are significantly warmer, with a minimum of 13°C (56°F) and an average of 24°C (75°F), peaking at a high of 36°C (97°F). The month sees relatively low precipitation at 23 mm (0.9 in) over just three days, along with a humidity level of 58%. In contrast, February experiences much cooler weather, where temperatures range from a chilly 0°C (33°F) to a mild maximum of 21°C (70°F), with an average of 10°C (51°F). The precipitation rate increases to 69 mm (2.7 in), occurring over nine days, and humidity is higher at 78%. For more insights on February weather, you can visit Marathonas weather in February.

September and March present contrasting weather patterns. In September, temperatures are warmer, ranging from a mild 13°C (56°F) at night to a scorching 36°C (97°F) during the day, with an average of 24°C (75°F). The month experiences relatively low precipitation at 23 mm (0.9 in) over just 3 days and a moderate humidity level of 58%. In stark contrast, March sees much cooler temperatures, with nighttime lows dipping to 0°C (31°F) and daytime highs reaching up to 24°C (76°F), averaging only 12°C (54°F). This month is also wetter, with 57 mm (2.2 in) of rain falling over 7 days, accompanied by higher humidity levels at 76%. For a closer look at March conditions in Marathonas, visit Marathonas weather in March.

September and April offer quite distinct weather experiences. In September, temperatures range from a minimum of 13°C to a maximum of 36°C, with an average of 24°C, making it significantly warmer than April, where temperatures vary from 3°C to 28°C and have an average of 15°C. Additionally, September sees less precipitation at 23 mm over just three days, compared to April's 52 mm over six days, indicating that showers are more frequent in the spring month. Humidity levels are also higher in April at 70%, in contrast to September’s 58%. For a closer look at conditions during April, you can check the Marathonas weather in April.

When comparing the weather in September and May, September generally boasts warmer temperatures, with an average of 24°C (75°F) and highs reaching up to 36°C (97°F). In contrast, May experiences cooler average temperatures of 20°C (69°F), with maximums around 35°C (95°F). Precipitation is slightly less frequent in September, with only 23 mm (0.9 in) falling over three days, compared to May's 33 mm (1.3 in) over six days. Additionally, humidity levels tend to be higher in May at 71%, compared to September's 58%. For more details, you can check this link: Marathonas weather in May.

In comparing the weather between September and June, both months experience similar average temperatures, ranging from a minimum of 13°C (55°F-13°C) to an average of around 24°C (75°F-76°F). However, June is slightly warmer, with maximum temperatures reaching up to 37°C (99°F), compared to September's 36°C (97°F). Precipitation is notably higher in June, totaling 42 mm (1.6 in) over 6 days, whereas September sees only 23 mm (0.9 in) across 3 days. Additionally, humidity levels are slightly higher in June at 61%, compared to 58% in September, making June feel a bit more muggy. For more details, you can check the Marathonas weather in June.

In comparing the weather between September and July, September tends to be milder with an average temperature of 24°C (75°F) and a maximum of 36°C (97°F), while July is hotter, averaging 27°C (81°F) and peaking at a scorching 41°C (105°F). Although both months experience relatively low precipitation, September records 23 mm over 3 days, whereas July has slightly less at 19 mm over 4 days. Humidity remains similar, with September at 58% and July at 57%. For more detailed insights, you can refer to Marathonas weather in July.

In September, the weather shows a noticeable shift from August, with lower minimum temperatures of 13°C (56°F) compared to August's 19°C (66°F). The average temperature also drops to 24°C (75°F) in September, down from 27°C (81°F) in August, while the maximum temperature reaches 36°C (97°F) against August's peak of 41°C (106°F). Precipitation in September is slightly higher at 23 mm (0.9 in) over 3 days, compared to August's 9 mm (0.3 in) over just 2 days, reflecting a slight increase in humidity to 58% against August's 51%. For more details on August weather, visit Marathonas weather in August.

September weather features a warm and welcoming climate, with average temperatures reaching around 24°C (75°F) and highs peaking at 36°C (97°F). The month experiences relatively low precipitation, totaling 23 mm (0.9 in) over just three days, with a humidity level of 58%. In contrast, October brings a noticeable drop in temperatures, with an average of 19°C (66°F) and maximums of 33°C (91°F). There is also an increase in rainfall, with 40 mm (1.6 in) falling over six days, resulting in higher humidity at 73%. Overall, October's cooler temperatures and wetter conditions mark a significant shift from September's warm and drier climate. For more specific information, you can check Marathonas weather in October.

In September, the weather is significantly warmer, with average temperatures around 24°C (75°F) and maximums reaching up to 36°C (97°F). This month sees relatively low precipitation, with only 23 mm (0.9 in) over three days and a humidity level of 58%. In contrast, November brings a marked drop in temperature, averaging 15°C (59°F) and peaking at 26°C (79°F). The month also experiences increased rainfall, totaling 57 mm (2.2 in) over eight days, along with higher humidity at 79%. For more details, check Marathonas weather in November.

September weather features a warm climate with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 36°C (97°F) and an average of 24°C (75°F). The month is relatively dry, with just 23 mm (0.9 in) of precipitation over three days and a humidity level of 58%. In contrast, December experiences much cooler temperatures, with a minimum of 0°C (32°F), an average of 11°C (52°F), and a maximum of 22°C (72°F). This month sees significantly more precipitation, totaling 83 mm (3.3 in) over 11 days, and higher humidity at 81%. For more details on December weather, visit Marathonas weather in December.

Compare Marathonas's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Marathonas

As September unfolds in Marathonas, the weather begins to transition from the scorching summer heat, offering a refreshing blend of warmth and mildness. With average temperatures hovering around a comfortable 24°C (75°F) and a maximum occasionally peaking at 36°C (97°F), the month is marked by pleasant days ideal for outdoor activities. Rainfall is minimal, typically limited to just a few days, which allows for optimal conditions to explore the stunning landscapes of the region. Unlike the intense humidity of previous months, September sees a more moderate humidity level of 58%, adding to the overall comfort. For those planning a visit, September offers a unique opportunity to experience Marathonas’s charming climate. For more insights, check out Marathonas Climate.