September Weather in Portovenere, Italy

Last updated: March 24, 2025

September in Portovenere, Italy offers a delightful blend of warm temperatures and mild evenings, making it an ideal time to experience this enchanting coastal town. With a maximum temperature reaching 28°C (83°F) and a comfortable average of 22°C (72°F), visitors can enjoy pleasant days amidst stunning scenery. However, expect some rain, as the month brings an average precipitation of 129 mm (5.1 in) over 10 days. With humidity levels around 70%, September is a perfect transitional month, where the summer warmth begins to give way to autumn's crispness, providing a unique charm to Portovenere's breathtaking vistas and vibrant culture.

September Temperature in Portovenere

September in Portovenere, Italy, marks a beautiful transition into autumn, boasting pleasantly warm temperatures that invite visitors to explore its charming streets and stunning coastlines. The average temperature settles around 22°C (72°F), with highs reaching up to 28°C (83°F), offering plenty of sunny days for outdoor activities. Evenings cool down to a comfortable minimum of 16°C (60°F), perfect for enjoying al fresco dining as the sun sets over the Mediterranean. Compared to the scorching summer months, September provides a more mild and enjoyable climate, making it an ideal time for travelers to experience the natural beauty and rich history of this picturesque seaside town.

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

The chart illustrates September temperature patterns in Portovenere, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec515253586372767872665954
Data source: Temperature data for Portovenere 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 Portovenere

September in Portovenere, Italy, marks a noteworthy shift in precipitation patterns as the summer months give way to autumn. With an average rainfall of 129 mm (5.1 in) over approximately 10 days, this month stands out as one of the wetter periods of the year, surpassing the relatively dry summer months of July and August. This significant uptick in rainfall indicates a transition, as October and November follow with even heavier precipitation, averaging around 204 mm (8.0 in) and 207 mm (8.1 in) respectively. The trend shows that as the days grow shorter and cooler, so does the likelihood of rain, making September a pivotal month in Portovenere’s climatological calendar.

September Precipitation Trends in Portovenere

The chart displays monthly precipitation patterns in Portovenere, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89124113112110483750129204207205
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Portovenere

As summer wanes and autumn approaches, September in Portovenere, Italy showcases a modest humidity level of 70%, embodying a transition from the sultry months preceding it. Throughout the summer, residents and visitors enjoyed relatively lower humidity, peaking at 69% in July and August. Interestingly, this slight rise in September creates a refreshing blend of warmth while still maintaining comfort, marking a shift toward the more humid conditions of October and November, which see levels climb back to around 77% and 80%, respectively. This month effectively bridges the gap between the drier summer days and the lush, damp arrivals of fall, making it a delightful time to experience the picturesque coastal charm of Portovenere.

September Average Humidity in Portovenere

This chart illustrates the average monthly humidity levels in Portovenere, 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.
JanFebMarAprMayJunJulAugSepOctNovDec80%72%69%74%75%72%69%68%70%77%80%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Portovenere

In September, Portovenere experiences a UV Index of 7, indicating a high level of sun exposure, with a burn time of 25 minutes for unprotected skin. This month marks a slight decline from the peak summer months, where indices soared to 9 in both July and June, reflecting the intense sun of high summer. As autumn approaches, the UV levels begin to taper off, yet caution is still advised, particularly during midday hours. Shifting from the scorching summer sun, September offers a more moderate yet still potent UV experience. For detailed UV ratings throughout the year, check out Portovenere UV Index.

Maximum UV Index Levels in Portovenere for September

The chart shows the monthly maximum UV Index (UVI) for Portovenere 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.
JanFebMarAprMayJunJulAugSepOctNovDec236789987532
Data source: Portovenere 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 Portovenere

In Portovenere, Italy, September marks the transition into autumn but still basks in 342 hours of glorious sunshine, making it a delightful time for visitors. The month enjoys a warm glow, following the sunniest peak of July with 432 hours. While sunshine begins to wane as October approaches, the month still offers a generous amount of bright days, capturing the essence of late summer. The gradual decline from the summer months ultimately showcases a gentle, inviting light that highlights the village’s stunning coastal beauty, ensuring that September remains a cherished time for exploration and relaxation before the cooler months set in.

Monthly Sunshine Duration in Portovenere: September Highlighted

The September sunshine duration represents the total number of hours Portovenere 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.
JanFebMarAprMayJunJulAugSepOctNovDec194h244h318h351h394h417h432h401h342h307h238h219h
Data source: Portovenere September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Portovenere During September

September in Portovenere, Italy, offers a notable likelihood of sunny weather, with a 58% chance of clear skies. This month continues a trend of rising sunshine that begins in the spring, peaking during the summer months. As the warmer days of July and August fade, September maintains a relatively high chance of sunlight, making it an excellent time for visitors to enjoy the stunning coastal views without the peak season crowds. The weather in September strikes a perfect balance, providing plenty of opportunities for outdoor exploration and leisure while still benefiting from the lingering warmth of late summer.

Percentage of Sunny Days in September in Portovenere

The chart illustrates the percentage of sunny days in Portovenere 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 Portovenere experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%45%65%48%46%59%59%65%58%52%36%46%
Data source: Portovenere September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Portovenere in September

As September arrives in Portovenere, Italy, the daylight begins to wane, offering 12 hours of sunlight—a beautiful transition from the sun-drenched summer months. Following June and July, which bask in a peak of 15 hours of daylight, the gradual decline continues into autumn, reflective of the subtle shift in season. August retains a still generous 13 hours, but by September, the days noticeably shorten, hinting at the cozy atmosphere that autumn brings. This rhythm of daylight is part of a captivating yearly cycle, where the warmth of summer makes way for the gentle embrace of fall, setting the stage for the enchanting landscapes that define Portovenere.

Average Daylight Hours in Portovenere for September

The chart illustrates the variation in daylight duration in Portovenere throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 17m10h 27m11h 56m13h 28m14h 45m15h 25m15h 4m13h 55m12h 27m10h 57m9h 37m8h 55m
Data source: Portovenere daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Portovenere

As we transition into September in Portovenere, Italy, the gentle caress of the wind offers a refreshing shift after the warmth of summer. With an average wind speed of 2.9 m/s (6 mph), September's breeze is slightly stronger than August's lull, hinting at the cooling embrace of autumn. This marks a subtle uptick in wind activity as the tranquil summer months give way to the more dynamic fall season. Historically, September's winds are moderately softer compared to the stronger gusts of November, which averages 4.9 m/s (11 mph), but still provides a delightful backdrop for coastal strolls and al fresco dining. Embracing these soft winds can enhance the picturesque views of the rugged coastline, making it a perfect time to savor the beauty of Portovenere.

Average September Wind Speed in Portovenere

The chart displays monthly wind speed patterns in Portovenere, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.63.93.43.23.72.53.12.82.9 m/s3.74.93.2
Data source: Portovenere September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Portovenere Compares to Other Months

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

September and January present contrasting weather conditions. In September, temperatures are significantly warmer, with a minimum of 16°C (60°F), an average of 22°C (72°F), and a maximum of 28°C (83°F), making it a pleasant time for outdoor activities. However, it also experiences higher precipitation, totaling 129 mm (5.1 in) over approximately 10 days, with humidity levels around 70%. In contrast, January brings much cooler temperatures, with a minimum of 4°C (39°F), an average of 11°C (52°F), and a maximum of 16°C (61°F). The precipitation this month is lower at 89 mm (3.5 in) over about 9 days, accompanied by higher humidity at 80%. For a detailed look at January weather in Portovenere, visit Portovenere weather in January.

September and February exhibit starkly contrasting weather patterns. September typically enjoys milder temperatures, with a minimum of 16°C (60°F), an average of 22°C (72°F), and a maximum of 28°C (83°F). It also experiences higher precipitation levels, averaging 129 mm (5.1 in) over about 10 days, while humidity hovers around 70%. In contrast, February is considerably cooler, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 16°C (61°F), and an average of just 11°C (52°F). Although precipitation is slightly lower at 124 mm (4.9 in), it falls across about 12 days, and humidity remains slightly higher at 72%. For a more detailed look at February weather, visit Portovenere weather in February.

September and March present distinctly different weather conditions. September boasts warmer temperatures, with a minimum of 16°C (60°F) and an average high around 28°C (83°F), making it ideal for outdoor activities. In contrast, March sees much cooler temperatures, ranging from a minimum of 2°C (36°F) to a maximum of 19°C (66°F). Both months experience comparable precipitation, with September receiving 129 mm (5.1 in) over 10 days and March recording 113 mm (4.4 in) across 11 days. Humidity levels are similar, hovering around 70% in September and 69% in March. For more specific details on March weather, you can check Portovenere weather in March.

In comparing the weather of September and April, September boasts warmer temperatures, with an average high of 28°C (83°F), while April's maximum reaches only 21°C (71°F). The transition from the cooler April climate, which has a minimum temperature of 7°C (45°F), to the more temperate September indicates a marked difference in warmth. Additionally, September experiences slightly more rainfall, averaging 129 mm (5.1 in) over about 10 days, compared to April's 111 mm (4.4 in) over 8 days. Humidity levels are quite similar, with September at 70% and April at 74%, suggesting that while both months can be humid, the overall experience is considerably warmer in September. For more detailed information, you can check the Portovenere weather in April.

When comparing the weather in September and May, September tends to be warmer, with average temperatures reaching around 22°C (72°F) and a maximum of 28°C (83°F), in contrast to May's cooler average of 17°C (64°F) and maximum of 26°C (80°F). September experiences more precipitation, averaging 129 mm (5.1 in) over 10 days, while May sees slightly less at 110 mm (4.3 in) across 12 days. Additionally, humidity levels are higher in May at 75% compared to 70% in September, making May feel a bit more oppressive. For more specific details on the weather in May, you can visit Portovenere weather in May.

When comparing the weather in September and June, both months showcase mild temperatures, with September averaging around 22°C (72°F) and June also at 22°C (72°F). However, June tends to be slightly warmer at its maximum, reaching 30°C (86°F), compared to September's peak of 28°C (83°F). Precipitation levels reveal a stark contrast; September sees significantly more rain at 129 mm (5.1 in) over approximately 10 days, while June is drier with only 48 mm (1.9 in) across about 6 days. Humidity levels are comparable, hovering around 70-72% for both months. For more details on June weather, you can check Portovenere weather in June.

When comparing the weather in September and July, it’s clear that July tends to be slightly warmer, with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 30°C (86°F). In contrast, September is cooler, featuring an average minimum of 16°C (60°F) and a maximum of 28°C (83°F). July also experiences less rainfall, with only 37 mm (1.5 in) of precipitation over about 6 days, while September sees significantly higher precipitation at 129 mm (5.1 in) spread across 10 days. Humidity levels remain quite similar, hovering around 69% in July and 70% in September. For more details on July’s weather, you can check Portovenere weather in July.

In comparing the weather between September and August, September tends to be slightly cooler, with average temperatures dropping from August's 25°C (78°F) to 22°C (72°F). Additionally, September experiences more rainfall, with a total precipitation of 129 mm (5.1 in) over 10 days, compared to just 50 mm (2.0 in) across 4 days in August. Humidity levels are quite similar, hovering around 70% in September and 68% in August. For a closer look at August weather specifics, you can check Portovenere weather in August.

In comparing the weather between September and October, we see a transition from warmer to cooler conditions. September boasts a minimum temperature of 16°C (60°F) and an average of 22°C (72°F), while October sees a slight drop with a minimum of 13°C (56°F) and an average of 19°C (66°F). Precipitation increases notably in October, with 204 mm (8.0 in) over 11 days compared to September's 129 mm (5.1 in) across 10 days. Additionally, humidity rises from 70% in September to 77% in October, creating a more humid atmosphere as autumn sets in. For more detailed information, you can check Portovenere weather in October.

September and November exhibit notable differences in weather patterns. In September, temperatures range from a mild 16°C (60°F) to a warm 28°C (83°F), with an average of 22°C (72°F). The month experiences around 129 mm (5.1 in) of precipitation over approximately 10 days and maintains a humidity level of 70%. In contrast, November sees a significant drop in temperatures, with a minimum of 7°C (44°F) and a maximum of 21°C (69°F), averaging at 15°C (59°F). This month is wetter, recording about 207 mm (8.1 in) of rain over 16 days, and humidity rises to 80%. For a detailed overview of November's weather, visit Portovenere weather in November.

In September, the weather tends to be warmer with average temperatures ranging from a minimum of 16°C (60°F) to a pleasant maximum of 28°C (83°F), which encourages outdoor activities. The month experiences moderate rainfall, with about 129 mm (5.1 in) spread over 10 rainy days and a humidity level of 70%. In contrast, December brings cooler temperatures, with an average low of 7°C (45°F) and a high of only 17°C (63°F). This month is wetter, with precipitation reaching 205 mm (8.1 in) over 16 days and humidity slightly higher at 76%. For those interested in more details about December weather in Portovenere, you can check out Portovenere weather in December.

Compare Portovenere's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Portovenere

As September unfolds in Portovenere, visitors are welcomed by pleasantly warm temperatures, making it a delightful time to explore this coastal gem. Unlike the sweltering heat of July and August, September offers a more moderate climate with an average warmth that still allows for outdoor adventures, while evenings cozying up with a hint of coolness. While occasional showers may sweep through, presenting about ten days of precipitation, the overall feel remains inviting with a comfortable humidity level. It's a month that balances the lingering summer vibes with the whisper of autumn, giving an opportunity to enjoy both the stunning landscapes and a vibrant atmosphere. For more insights on what to expect year-round, check out Portovenere Climate.