September Weather in Oia, Spain

Last updated: February 6, 2025

September in Oia, Spain, offers a delightful transition from the warmth of summer to the cooler days of autumn. With maximum temperatures reaching up to 29°C (84°F) and an inviting average of 18°C (65°F), visitors can enjoy pleasant outdoor activities amidst stunning coastal views. Travelers should be prepared for occasional rain, as the month sees approximately 49 mm (1.9 in) of precipitation spread over seven days, while humidity stays at a comfortable 71%. This blend of warm days and cooler evenings, coupled with vibrant sunsets over the caldera, makes September a magical time to experience the charm of Oia.

September Temperature in Oia

In September, Oia, Spain, embraces the fading warmth of summer, offering a delightful climate for visitors. With temperatures ranging from a minimum of 10°C (50°F) to a cozy maximum of 29°C (84°F), the month features a comfortable average of 18°C (65°F), making it an ideal time for outdoor exploration. As the heat gradually softens from August's sweltering highs, September’s pleasant weather invites guests to enjoy the stunning cobblestone streets and mesmerizing sunsets without the summer crowds. This transitional period signals a shift toward the mildness of autumn, while still allowing ample opportunity for sun-drenched days and comfortable evenings.

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

The chart illustrates September temperature patterns in Oia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec495253556063666765605452
Data source: Temperature data for Oia 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 Oia

In September, Oia, Spain, experiences a noticeable shift in precipitation, with an average of 49 mm (1.9 in) falling over about 7 days. While this marks a modest increase from the dry summer months of July and August, it pales in comparison to the heavier rains that follow in October and November. The gradual uptick in rainfall reflects the transition into autumn, hinting at forthcoming storms that will bring more significant moisture. This month serves as a bridge, where the lingering warmth of summer meets the cooler, wetter days ahead, creating a unique and picturesque atmosphere in this charming coastal town.

September Precipitation Trends in Oia

The chart displays monthly precipitation patterns in Oia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1311731821669862232749144208243
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Oia

In September, Oia, Spain, showcases a notable shift in humidity levels, settling at 71%. This marks a slight increase from the dry summer months of July and August, which recorded 63% and 64% respectively. The transition into fall brings back a touch of moisture, reminiscent of the spring months, but still maintains a relatively comfortable atmosphere compared to the wetter depths of winter, where humidity peaks at 87% in January and December. As the city gradually embraces the cooling temperatures of autumn, September serves as a gentle reminder of nature’s cyclical rhythm, melding warm summer afternoons with refreshing breezes.

September Average Humidity in Oia

This chart illustrates the average monthly humidity levels in Oia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%79%78%71%63%64%71%79%86%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Oia

As summer transitions into autumn, the UV Index in Oia, Spain, begins to decline, but it still remains notable at 7 in September, categorizing it as high. This means that while the risk of harm from unprotected sun exposure is lower than the peak of summer, it still warrants caution, with a burn time of 25 minutes. The gradual decrease from the intense UV Index of 9 in the summer months reflects a shift towards milder sun conditions, making September an ideal time for outdoor activities with proper sun protection in place. For detailed insights and safety tips, visit Oia UV Index.

Maximum UV Index Levels in Oia for September

The chart shows the monthly maximum UV Index (UVI) for Oia 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.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997632
Data source: Oia 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 Oia

September in Oia, Spain, is truly a golden transition, boasting 342 hours of sunshine as summer begins to wane and autumn takes hold. Following the vibrant peak of July, where the sun shines for an impressive 426 hours, sunshine hours dip slightly but still provide a warm and inviting atmosphere for visitors. As the beaches remain lively and the landscapes continue to bask in light, September offers a perfect blend of warmth and tranquility, making it an ideal time for exploration and relaxation. With hours of sunlight gradually decreasing into October, this month serves as a gentle reminder of the beauty of summer's lingering warmth before the cooler months descend.

Monthly Sunshine Duration in Oia: September Highlighted

The September sunshine duration represents the total number of hours Oia 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.
JanFebMarAprMayJunJulAugSepOctNovDec177h233h307h342h398h400h426h394h342h304h237h207h
Data source: Oia September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Oia During September

In September, Oia, Spain, enjoys a 41% chance of sunny weather, reflecting a slight dip following the peak summer months, where sun chances reach as high as 65% in August. This transition marks a gradual shift from the warm, sun-soaked days of summer, as atmospheric conditions start to change with the onset of autumn. Interestingly, September's sunshine probability is comparable to that of the early months of spring, like April and May, highlighting the region's relatively consistent yet variable climate. As the days grow shorter and cooler, visitors can still expect a fair share of sunshine, making it an ideal time to explore the picturesque landscapes and vibrant sunsets that Oia is renowned for.

Percentage of Sunny Days in September in Oia

The chart illustrates the percentage of sunny days in Oia 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 Oia experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec47%18%58%39%44%59%53%65%41%42%65%32%
Data source: Oia September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Oia in September

As summer transitions into autumn, September in Oia, Spain, welcomes a gentle decline in daylight, offering 12 hours of sunlight for residents and visitors alike. This month reflects a gradual shift from the peak of June's 15 hours of daylight, showcasing the shifting seasons that define the island's charm. While the hours are still favorable for sightseeing and basking in the stunning Aegean views, the daylight is slowly retreating towards the shorter days of autumn, as seen in the 11 hours of daylight in October. This gradual reduction in sunlight not only emphasizes Oia’s stunning sunsets but also invites a more relaxed pace, perfect for savoring the vibrant local culture and breathtaking scenery.

Average Daylight Hours in Oia for September

The chart illustrates the variation in daylight duration in Oia throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 29m10h 34m11h 57m13h 22m14h 34m15h 10m14h 51m13h 47m12h 26m11h 1m9h 47m9h 9m
Data source: Oia daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Oia

As summer transitions to autumn, September in Oia, Spain, brings a gentle breeze that echoes the serene beauty of the island. With an average wind speed of 3.0 m/s (7 mph), the winds remain calm and consistent, paralleling the tranquil atmosphere established in August. Interestingly, this month experiences a slight dip in wind intensity compared to the earlier summer months while mirroring the mild conditions of October. In fact, September's winds remain stable at this level, a trend that persists into October, providing a perfect backdrop for leisurely strolls along the stunning caldera. As the year progresses, the winds gradually pick up in November, hinting at the approaching winter. Overall, September's winds contribute to the idyllic charm of Oia, making it a delightful time to visit.

Average September Wind Speed in Oia

The chart displays monthly wind speed patterns in Oia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.45.33.22.83.83.83.63.03.0 m/s3.03.54.2
Data source: Oia September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Oia Compares to Other Months

The weather in Oia 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 Oia and find detailed weather information for every month.

September weather features milder temperatures, with a minimum of 10°C (50°F), an average of 18°C (65°F), and a maximum reaching up to 29°C (84°F). While humidity is relatively high at 71%, the month experiences less precipitation, averaging 49 mm (1.9 in) over about 7 days. In contrast, January shows a significant drop in temperatures, with a minimum of 0°C (32°F), an average of 9°C (49°F), and a maximum of 20°C (68°F). This month also sees increased precipitation, averaging 131 mm (5.2 in) over 10 days, accompanied by higher humidity levels at 87%. For a closer look at January conditions, you can check out Oia weather in January.

September and February exhibit striking differences in weather patterns. September generally enjoys milder temperatures, with an average of 18°C (65°F) and maximums reaching 29°C (84°F), while February tends to be much cooler, featuring an average of 11°C (52°F) and highs of 21°C (70°F). Additionally, February experiences significantly more rainfall, with 173 mm (6.8 in) over 13 days, compared to September's 49 mm (1.9 in) across just 7 days. The humidity levels also rise slightly in February, averaging 81% compared to September's 71%. For more detailed insights, you can visit Oia weather in February.

In comparing the weather of September and March, it’s clear that these months present distinct climates. September boasts milder temperatures, with minimums around 10°C (50°F) and maximums reaching 29°C (84°F), offering an average of 18°C (65°F). In contrast, March features cooler conditions, where temperatures range from a minimum of 2°C (37°F) to a maximum of 22°C (73°F), with an overall average of 11°C (53°F).

Precipitation levels also differ significantly; September experiences about 49 mm (1.9 in) over 7 days, while March sees a substantial increase with 182 mm (7.2 in) across 13 days. Humidity is relatively high in both months, higher in March at 78% compared to 71% in September. For more detailed insights on March weather, you can visit Oia weather in March.

Comparing the weather in September and April reveals notable differences. September tends to be warmer, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (84°F), making it more suitable for outdoor activities. In contrast, April is cooler, featuring an average temperature range of 3°C (38°F) to 25°C (77°F). Additionally, April experiences significantly more precipitation, totaling 166 mm (6.5 in) over 14 days, compared to September’s 49 mm (1.9 in) over just 7 days. Humidity levels are also slightly higher in April (79%) than in September (71%). For more detailed insights into April's weather, check out Oia weather in April.

September and May exhibit distinct weather patterns, reflecting the transition from summer to autumn and spring to early summer, respectively. In September, temperatures range from a mild 10°C (50°F) at night to a warm 29°C (84°F) during the day, with an average temperature of 18°C (65°F). The month sees a total precipitation of about 49 mm (1.9 in) over approximately 7 days, along with a humidity level of 71%.

In contrast, May features slightly cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 28°C (82°F), averaging around 16°C (60°F). Rainfall is more substantial in May, totaling 98 mm (3.9 in) spread across around 10 days, along with higher humidity at 78%. For more detailed weather information, you can check Oia weather in May.

September weather tends to be slightly warmer than June, with average temperatures reaching 18°C (65°F) compared to June's 17°C (63°F). While both months experience similar humidity levels of 71%, September boasts a higher maximum temperature of 29°C (84°F), making it the warmer month overall. However, June has slightly more precipitation, totaling 62 mm (2.4 in) over 8 days, compared to September's 49 mm (1.9 in) over 7 days. For a closer look at the climate in June, you can check out Oia weather in June.

In comparing the weather between September and July, both months exhibit similar maximum temperatures, peaking at around 29°C (84°F) in September and 29°C (85°F) in July. However, September has a slightly cooler minimum temperature, averaging 10°C (50°F) compared to July’s 11°C (52°F). Additionally, September experiences more precipitation, with 49 mm (1.9 in) falling over 7 days, while July sees only 22 mm (0.9 in) over 5 days, reflecting a drier and less humid environment in July with only 63% humidity compared to September’s 71%. For those interested in learning more about the specifics of July weather, you can view additional details here: Oia weather in July.

In September, the weather tends to be slightly cooler than in August, with minimum temperatures of 10°C (50°F) compared to August's 12°C (54°F). The average temperature drops to 18°C (65°F) in September, while August boasts a warmer average of 19°C (67°F). Maximum temperatures in September reach up to 29°C (84°F), just shy of August's peak of 31°C (87°F). Precipitation increases in September with 49 mm (1.9 in) recorded over 7 days, as opposed to August's 27 mm (1.0 in) over 4 days. Additionally, September experiences higher humidity levels at 71% compared to 64% in August. For more detailed information, you can check Oia weather in August.

September presents a milder climate, with average temperatures around 18°C (65°F) and maximums peaking at 29°C (84°F). The month experiences relatively low precipitation at 49 mm (1.9 in) over 7 days, contributing to a general humidity level of 71%. In contrast, October brings cooler temperatures, with an average of 16°C (60°F) and minimums dropping to 5°C (42°F). This month sees a significant increase in rainfall, totaling 144 mm (5.7 in) spread over 12 days, and humidity rises to 79%. For more detailed insights into the weather patterns, check out Oia weather in October.

September and November exhibit notable differences in weather patterns. In September, temperatures range from a mild 10°C (50°F) at night to a warm 29°C (84°F) during the day, with an average temperature of 18°C (65°F). It experiences relatively lower precipitation, totaling 49 mm (1.9 in) over about 7 days, and humidity levels sit at a comfortable 71%. In contrast, November brings cooler temperatures, with minimums dropping to 4°C (39°F) and maximums reaching only 20°C (68°F), averaging 12°C (54°F). This month is significantly wetter, with 208 mm (8.2 in) of rainfall occurring over 15 days and a higher humidity level of 86%. For more detailed information, you can refer to Oia weather in November.

In September, the weather typically features a pleasant range of temperatures, with a minimum of 10°C (50°F) and an average of 18°C (65°F), peaking at a maximum of 29°C (84°F). This month experiences moderate precipitation, averaging 49 mm (1.9 in) over about 7 days, along with 71% humidity, creating a relatively comfortable atmosphere.

In contrast, December brings cooler temperatures, with a minimum of 3°C (37°F), an average of 11°C (52°F), and a maximum of 18°C (65°F). The month is considerably wetter, with 243 mm (9.6 in) of precipitation occurring over 17 days, and humidity levels rise to 87%, making the air feel more saturated. These factors contribute to a stark shift in weather from the warmth of September to the chill and dampness of December. For more specific insights on the weather during this month, check out Oia weather in December.

Compare Oia's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Oia

As summer transitions into autumn, September in Oia showcases a delightful mix of warmth and a hint of crispness. Unlike the peak of summer, where the heat soars, temperatures in this month tend to be more moderate, averaging a pleasant 18°C (65°F) while still reaching a maximum of 29°C (84°F) on warmer days. Visitors can expect occasional showers, with around 7 days of precipitation, bringing the total rainfall to 49 mm (1.9 in). The humidity also rises to about 71%, lending a refreshing feel to the coastal atmosphere. Overall, September offers a unique charm, perfect for those who appreciate milder temperatures and fewer crowds. For a deeper dive into the climatic nuances, visit Oia Climate.