September Weather in Kalymnos, Greece

Last updated: February 6, 2025

Experience the charm of Kalymnos in September, where the weather showcases a delightful balance of warmth and tranquility. Expect maximum temperatures reaching 28°C (83°F), an inviting average of 24°C (75°F), and a cozy minimum of 19°C (66°F). Notably, this month boasts zero precipitation days, with only 4 mm (0.1 in) of rainfall recorded, ensuring clear skies and 70% humidity to maintain a refreshing atmosphere. Perfect for outdoor adventures or leisurely strolls, September sets the stage for an idyllic island getaway.

September Temperature in Kalymnos

As September graces Kalymnos with its arrival, the island showcases a delightful transition towards cooler temperatures, while still holding onto the warmth of summer. With minimums around 19°C (66°F) and maximums reaching up to 28°C (83°F), visitors can bask in the pleasant climate, making it ideal for outdoor adventures and leisurely days by the sea. The average temperature settles at a comfortable 24°C (75°F), providing the perfect backdrop for exploring the island's stunning landscapes and vibrant culture. This month marks a gradual decline from the peak summer heat of July and August, with temperatures that invite both relaxation and exploration, ensuring that September in Kalymnos remains a captivating experience for all.

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

The chart illustrates September temperature patterns in Kalymnos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec555757616773777875706660
Data source: Temperature data for Kalymnos generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kalymnos

In September, Kalymnos, Greece, continues to experience the arid conditions of summer, with only 4 mm of precipitation recorded, equivalent to a mere 0.1 inches. Interestingly, this month marks the end of a prolonged dry spell, as it experiences zero days of rain, aligning with the dry summer months of July and August. The historical trend shows a dramatic shift from the wet winter months, where January and December see up to 150 mm and 179 mm, respectively, indicating that while September is mostly dry, it serves as a gentle transition into the wetter fall months ahead. As the island gradually welcomes the autumn rains, locals and visitors alike can anticipate a lush transformation in the landscape.

September Precipitation Trends in Kalymnos

The chart displays monthly precipitation patterns in Kalymnos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec150977530440043887179
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kalymnos

In September, Kalymnos experiences a notable shift in humidity, averaging around 70%. This marks a gradual decline from the peak summer months of July and August, where humidity levels drop to 71% and 66%, respectively. The transition into autumn brings a slight increase in moisture, but the overall trend reveals a consistent pattern of higher humidity in the earlier months of the year, peaking in May at 81%. As the seasons change, Kalymnos maintains a relatively stable humidity profile, oscillating between 66% and 81% throughout the year, providing a balanced climate for both residents and visitors alike.

September Average Humidity in Kalymnos

This chart illustrates the average monthly humidity levels in Kalymnos, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%77%77%81%77%72%66%70%76%77%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kalymnos

As summer transitions into autumn, Kalymnos, Greece, continues to experience a very high UV Index of 8 in September, indicating that sun protection remains essential. With a burn time of just 15 minutes, sunbathers should be particularly vigilant this month, reflecting a gradual decline from the peak UV levels seen in the summer months of June to August, which consistently held at 10. This trend showcases the lingering intensity of the sun, even as the season shifts, emphasizing the need for protective measures. For more detailed information, visit the Kalymnos UV Index.

Maximum UV Index Levels in Kalymnos for September

The chart shows the monthly maximum UV Index (UVI) for Kalymnos 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.
JanFebMarAprMayJunJulAugSepOctNovDec3578101010108643
Data source: Kalymnos 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 Kalymnos

As summer transitions to autumn, September shines brightly in Kalymnos, Greece, boasting an impressive 350 hours of sunshine. This radiant month, while slightly less luminous than the sun-soaked peak of July with its 425 hours, still offers a delightful retreat for sun-seekers. Following the high-energy days of May and June, which harnessed over 400 hours, September serves as a gentle reminder of the lingering warmth of summer, making it an ideal time for outdoor adventures and leisurely beach days. The gradual decline in sunshine hours through October and into winter highlights the island's seasonal shifts, yet September remains a golden gem, perfectly positioned between the vibrancy of summer and the tranquility of fall.

Monthly Sunshine Duration in Kalymnos: September Highlighted

The September sunshine duration represents the total number of hours Kalymnos 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.
JanFebMarAprMayJunJulAugSepOctNovDec214h271h334h353h403h412h425h396h350h326h277h268h
Data source: Kalymnos September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kalymnos During September

As summer transitions into autumn, **September in Kalymnos, Greece, boasts an impressive 96% chance of sunny weather, making it one of the sunniest months of the year. Following the peak sunshine of July and August, when the chances soar to a remarkable 99%, September maintains this high standard, offering residents and visitors alike a brilliant mix of warm days and clear skies. This trend of abundant sunshine is consistent with the overall pattern in Kalymnos, where spring and summer months showcase significantly higher probabilities of sun compared to the cooler months of November through March. Enjoying the tail end of summer in September provides an ideal opportunity to soak up the sun before the seasons change.

Percentage of Sunny Days in September in Kalymnos

The chart illustrates the percentage of sunny days in Kalymnos 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 Kalymnos experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec39%67%68%55%78%94%99%100%96%80%48%44%
Data source: Kalymnos September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kalymnos in September

As summer fades into autumn, September in Kalymnos, Greece experiences a gentle shift in daylight duration, offering approximately 12 hours of sunlight. This marks a gradual decrease from the peak of 14 hours enjoyed in both June and July, showcasing the island's transition into the softer, golden hues of fall. While the daylight hours taper off slightly, they still provide ample opportunity to bask in Kalymnos's stunning landscapes and warm atmosphere. Following September, the days will continue to shorten, with October bringing 11 hours of daylight, emphasizing the island's dynamic seasonal rhythms as it gracefully ushers in the cooler months.

Average Daylight Hours in Kalymnos for September

The chart illustrates the variation in daylight duration in Kalymnos throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 55m10h 49m11h 58m13h 9m14h 8m14h 38m14h 22m13h 30m12h 22m11h 12m10h 10m9h 39m
Data source: Kalymnos daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kalymnos

As September arrives in Kalymnos, Greece, the average wind speed settles at a pleasant 8.0 m/s (18 mph), offering a gentle reminder of the island's seasonal transition. Following a summer marked by notably higher winds, with peaks in July and August, the breezes begin to soften as autumn approaches. This gradual decrease continues into October and November, where winds dip to around 6.4 m/s (14 mph) and 6.1 m/s (14 mph), respectively. However, the year ends on a breezy note, with December resurging to 8.4 m/s (19 mph). Overall, September showcases a comfortable wind pattern, inviting both relaxation and the opportunity for outdoor activities amidst the stunning Mediterranean backdrop.

Average September Wind Speed in Kalymnos

The chart displays monthly wind speed patterns in Kalymnos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8.38.38.58.46.27.78.48.28.0 m/s6.46.18.4
Data source: Kalymnos September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kalymnos Compares to Other Months

The weather in Kalymnos changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Kalymnos and find detailed weather information for every month.

September and January present stark contrasts in weather. In September, temperatures are pleasantly warm, with a minimum of 19°C (66°F) and an average of 24°C (75°F), peaking at 28°C (83°F). The month enjoys minimal rainfall, with only 4 mm (0.1 in) over no days, and a humidity level of 70%. In contrast, January is much cooler, with temperatures ranging from a minimum of 5°C (42°F) to an average of 13°C (56°F) and a maximum of 19°C (66°F). This winter month is significantly wetter, receiving 150 mm (5.9 in) of precipitation over 13 days, and humidity rises to 77%. For more detailed information, visit Kalymnos weather in January.

September and February present stark contrasts in weather conditions. In September, temperatures are notably warmer, with a minimum of 19°C (66°F) and an average of 24°C (75°F), peaking at 28°C (83°F). This month is characterized by minimal precipitation, averaging just 4 mm over no rainy days, and the humidity sits at 70%. In contrast, February experiences a cooler climate, with temperatures ranging from a minimum of 5°C (41°F) to an average of 14°C (57°F), reaching a maximum of 19°C (66°F). Precipitation is significantly higher at 97 mm, spread over about 10 rainy days, and humidity rises slightly to 76%. For more detailed information, you can check out Kalymnos weather in February.

When comparing the weather in September and March, a stark contrast emerges. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 28°C (83°F), accompanied by low precipitation of just 4 mm (0.1 in) and no rainy days, creating a warm and dry climate with 70% humidity. On the other hand, March sees much cooler temperatures, with a minimum of 5°C (41°F) and a maximum of 18°C (65°F). Precipitation significantly increases to 75 mm (3.0 in) over about 7 days, and humidity rises to 77%. This shift indicates that while September enjoys pleasant warmth and dryness, March is characterized by cooler temperatures and frequent rain. For more detailed information, you can check Kalymnos weather in March.

September and April showcase contrasting weather patterns. In September, the temperatures are notably warmer, with averages around 24°C (75°F) and highs reaching up to 28°C (83°F). The month is characterized by minimal precipitation, with only about 4 mm (0.1 in) recorded and generally dry conditions. In contrast, April experiences cooler temperatures, averaging around 16°C (61°F) and peaking at 21°C (70°F). It also sees more rainfall, with approximately 30 mm (1.2 in) spread over 4 days, coupled with higher humidity levels at 77%. For a detailed look at what to expect, check out Kalymnos weather in April.

In September, the weather is warmer with average temperatures reaching 24°C (75°F) and maximums peaking at 28°C (83°F), while May experiences cooler temperatures with an average of 19°C (67°F) and maximums around 24°C (75°F). Both months see minimal precipitation, averaging just 4 mm (0.1 in) with no rainy days, but September boasts slightly lower humidity at 70% compared to May's 81%. For a more detailed look at May's climate, check out Kalymnos weather in May.

In comparing the weather of September and June, we find that September typically enjoys slightly warmer temperatures, with a minimum of 19°C (66°F) and an average of 24°C (75°F), compared to June's minimum of 16°C (61°F) and average of 23°C (73°F). Both months experience similar levels of precipitation, with September recording 0 days of rain and June having just 1 day of light rain, accumulating the same amount of 4 mm (0.1 in). However, June has slightly higher humidity at 77%, while September's humidity sits at 70%. For more details on June weather in the region, you can check Kalymnos weather in June.

When comparing the weather in September to that of July, we can see some notable differences. September tends to be slightly cooler, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (83°F), while July features warmer temperatures with a minimum of 22°C (71°F) and a maximum of 29°C (84°F). Additionally, September experiences minimal precipitation with only 4 mm (0.1 in), similar to July, which sees no precipitation at all. Humidity levels are quite similar for both months, hovering around 70% for September and 71% for July. For more detailed insights, check out Kalymnos weather in July.

In comparing the weather of September and August, September offers slightly cooler temperatures, with a minimum of 19°C (66°F) compared to August's minimum of 23°C (73°F). The average temperature in September is 24°C (75°F), which is just a notch below August's average of 25°C (78°F), while the maximum temperatures reflect a similar trend, peaking at 28°C (83°F) in September versus 29°C (85°F) in August. Both months experience very little precipitation, with September receiving only 4 mm (0.1 in) across no rainy days, similar to August, which has 0 mm (0.0 in) of precipitation. Additionally, September has a slightly higher humidity level at 70%, compared to August's 66%. For more insight into the weather conditions during August, you can visit Kalymnos weather in August.

September and October present noticeable differences in weather patterns. September boasts warmer temperatures, with a minimum of 19°C (66°F) and an average of 24°C (75°F), while October sees a drop to a minimum of 15°C (59°F) and an average of 21°C (70°F). Additionally, September is characterized by dry conditions, recording only 4 mm of precipitation over the month with no rainy days, whereas October experiences increased rainfall, totaling 38 mm over four days. Humidity also rises slightly from 70% in September to 76% in October, contributing to a more humid atmosphere. For more details on what to expect, check out Kalymnos weather in October.

September weather tends to be much warmer compared to November, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (83°F) and an average of 24°C (75°F). Additionally, September experiences minimal precipitation, recording only 4 mm (0.1 in) across zero rainy days and a moderate humidity of 70%. In contrast, November sees a notable drop in temperature, with minimums around 12°C (53°F), an average of 19°C (66°F), and maximums of 23°C (74°F). This month also brings significantly more rain, totaling 87 mm (3.4 in) over 8 rainy days, along with a rise in humidity to 77%. For more details on the weather specifics in November, you can check Kalymnos weather in November.

In September, the weather is warm and pleasant, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 28°C (83°F), and an average of 24°C (75°F). The month experiences low precipitation, with only 4 mm (0.1 in) of rain over no rainy days, alongside a relative humidity of 70%. In contrast, December brings cooler temperatures, with a minimum of 9°C (48°F), an average of 15°C (60°F), and a maximum of 21°C (69°F). This month sees significantly higher rainfall, totaling 179 mm (7.1 in) spread over 15 days, while humidity rises to 78%. For a more detailed overview, you can check Kalymnos weather in December.

Compare Kalymnos's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kalymnos

As September rolls in, Kalymnos experiences a delightful transition from the sweltering summer months. The temperatures are comfortably warm, averaging around 24°C (75°F), making it an ideal time for outdoor activities and explorations. With almost no rainfall and humidity at a moderate 70%, the pleasant weather invites visitors to bask in the sun and enjoy the crystal-clear waters. This month stands out for its serene atmosphere, offering a perfect blend of warm days and cooler evenings—quite different from the peak summer heat. For a deeper dive into what to expect throughout the year, check out the details at Kalymnos Climate.