September Weather in Frascati, Italy

Last updated: March 24, 2025

In Frascati, Italy, September showcases a delightful blend of warm and mild weather, with maximum temperatures soaring up to 32°C (90°F) and an average of 21°C (70°F). The month experiences a refreshing reprieve during the evenings, with temperatures dipping to a minimum of 8°C (47°F). Rainfall is moderate, totaling 106 mm (4.2 in) across approximately 10 days, contributing to the region's lush landscapes. Humidity levels hover around 65%, offering a comfortable atmosphere for visitors to explore the stunning historical sites and picturesque scenery that Frascati has to offer.

September Temperature in Frascati

September in Frascati, Italy, heralds the transition from the sweltering summer heat to a more temperate climate. With average temperatures around 21°C (70°F), it offers a pleasant escape from the peak summer days. Nighttime brings cooler breezes, with minimum temperatures settling at 8°C (47°F), making evenings perfect for strolls under the stars. As the month progresses, high temperatures can still reach a comfortable 32°C (90°F), allowing locals and visitors alike to soak in the lingering warmth. This month is a sweet spot, blending the vibrancy of summer's last rays with the refreshing hints of autumn, creating an ideal atmosphere for exploring the charming streets and gardens of this historic town.

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

The chart illustrates September temperature patterns in Frascati, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444850566472777870615547
Data source: Temperature data for Frascati 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 Frascati

September marks a significant shift in precipitation patterns for Frascati, Italy, with rainfall totaling 106 mm (4.2 in) over approximately 10 days. This increase from the drier summer months is noteworthy, as it reflects the transition into autumn when the region typically experiences a surge in precipitation. Notably, September's rainfall is on par with October's, mirroring a tendency for wetter conditions that leads into the fall and winter. This trend points to a relatively consistent rainy season as the year progresses, with November seeing a staggering 191 mm (7.5 in), suggesting that the region prepares for its wettest months ahead. Overall, September serves as a pivotal bridge, ushering in a new climate narrative for Frascati as the lush landscape rejuvenates with the onset of autumn showers.

September Precipitation Trends in Frascati

The chart displays monthly precipitation patterns in Frascati, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7392947589473128106106191170
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Frascati

In September, Frascati, Italy experiences a moderate humidity level of 65%, which marks a subtle increase from the drier months of summer. As the year progresses, humidity begins to rise again after hitting its yearly low in August at 53%. This transition signals the approach of autumn, where the air becomes a bit more mellow and refreshing. The pattern of humidity throughout the year reveals a clear fluctuation, with January and December showcasing the highest levels at 84%. September's humidity serves as a gentle reminder of the changing seasons, easing the transition from the warmth of summer to the cooler, more comfortable days of autumn.

September Average Humidity in Frascati

This chart illustrates the average monthly humidity levels in Frascati, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%76%69%70%70%61%57%53%65%75%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Frascati

September in Frascati, Italy, marks a transition as summer fades, yet the UV Index remains high at 8, categorizing exposure as very high. With a burn time of only 15 minutes, it's crucial to take precautions against sun exposure during this month. The trend of rising UV levels beginning in spring peaks in the summer months, reaching a maximum of 10 in both June and July before slightly tapering off in September. As autumn approaches, the UV Index will eventually decrease, but for now, sun safety remains a priority. For more details on UV levels throughout the year, check out the comprehensive guide here: Frascati UV Index.

Maximum UV Index Levels in Frascati for September

The chart shows the monthly maximum UV Index (UVI) for Frascati 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.
JanFebMarAprMayJunJulAugSepOctNovDec34579101098642
Data source: Frascati 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 Frascati

September in Frascati, Italy, offers a breathtaking transition from the vibrant summer months to the calming days of autumn. With 338 hours of sunshine, this month sees a gentle decline from the peak summer brightness in July, where residents basked in an impressive 430 hours. As the heat of August wanes, September still shines brightly, surpassing the earlier spring months like March and April, which boasted 327 and 355 hours respectively. The warm golden hues of early fall invite both locals and visitors to embrace outdoor activities while enjoying the scenic beauty of the countryside. As October approaches, the sun exposure softens further, highlighting September as a perfect blend of warmth and welcoming change.

Monthly Sunshine Duration in Frascati: September Highlighted

The September sunshine duration represents the total number of hours Frascati 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.
JanFebMarAprMayJunJulAugSepOctNovDec202h260h327h355h400h415h430h398h338h314h246h244h
Data source: Frascati September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Frascati During September

In Frascati, Italy, September offers a delightful transition into autumn, with a 53% chance of sunny weather. This is a slight dip from the vibrant summer months, where July and August boast impressive sunny probabilities of 70% and 73%, respectively. Notably, September's sunlit days reflect the tail end of the warm season, still providing a pleasant backdrop for outdoor activities, while hinting at the cooler days ahead. As the year progresses, the likelihood of sunshine gradually decreases, dropping to 41% in October and only 33% by November. Thus, September presents a sweet spot for those seeking to enjoy early autumn sunshine before the clouds of winter roll in.

Percentage of Sunny Days in September in Frascati

The chart illustrates the percentage of sunny days in Frascati 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 Frascati experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec35%57%58%44%46%59%70%74%53%41%33%48%
Data source: Frascati September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Frascati in September

As summer fades into autumn, September in Frascati, Italy, offers a gentle transition in daylight duration. With approximately 12 hours of daylight, the month marks a subtle decline from the sun-drenched heights of 15 hours in June. This gradual decrease reflects the shift from the vibrant days of summer to the softer, cooler tones of fall. Following September, daylight continues to wane, dipping to 11 hours in October and returning to 9 hours by November and December. This pattern illustrates a rhythmic ebb and flow of sunlight throughout the year, inviting residents and visitors alike to savor the lingering warmth of early autumn before winter's embrace.

Average Daylight Hours in Frascati for September

The chart illustrates the variation in daylight duration in Frascati throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 31m10h 35m11h 57m13h 21m14h 32m15h 8m14h 49m13h 46m12h 26m11h 2m9h 49m9h 11m
Data source: Frascati daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Frascati

As summer gracefully shifts into autumn, September in Frascati, Italy, offers a gentle embrace with its soft winds, averaging just 1.7 m/s (4 mph). This marks a noticeable dip from the more spirited gusts experienced in the preceding months, particularly the peak summer winds of 2.4 m/s observed in both July and August. The transition is subtle yet soothing, as September's breeze sets a tranquil tone, inviting locals and visitors alike to savor the mild weather and picturesque scenery. Looking ahead, the wind patterns subtly rise again into October, suggesting that Frascati's charm continues to evolve with each season, oscillating between calm and invigorating, reflecting the enchanting rhythm of Italian life.

Average September Wind Speed in Frascati

The chart displays monthly wind speed patterns in Frascati, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.72.32.02.12.41.82.42.21.7 m/s2.22.42.3
Data source: Frascati September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Frascati Compares to Other Months

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

In comparing the weather of September and January, a stark contrast emerges. September typically sees warmer temperatures ranging from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), with an average of 21°C (70°F). The month experiences about 106 mm (4.2 in) of precipitation over 10 days and a moderate humidity level of 65%. In contrast, January brings much colder weather, with temperatures dipping to a minimum of -6°C (21°F) and an average of 7°C (44°F), peaking at 18°C (64°F). This winter month has less precipitation at 73 mm (2.9 in) over 9 days but higher humidity at 84%. For more detailed insights, you can check out Frascati weather in January.

In comparing the weather between September and February, one notes a stark contrast in temperatures and conditions. September enjoys a warmer climate, with average temperatures around 21°C (70°F), peaking at a maximum of 32°C (90°F) and a more moderate minimum of 8°C (47°F). The month sees about 106 mm (4.2 in) of precipitation over 10 days, combined with a humidity level of 65%. In contrast, February brings much colder weather, with an average temperature of just 9°C (48°F) and a minimum dropping as low as -12°C (11°F). Though it has slightly less precipitation at 92 mm (3.6 in) spread over 9 days, the humidity rises to 76%, adding to the chill in the air. For more details on February weather, you can check Frascati weather in February.

September and March present notably different weather conditions. In September, temperatures range from a minimum of 8°C (47°F) to a comfortable average of 21°C (70°F), peaking at a warm 32°C (90°F). The month experiences about 106 mm (4.2 in) of precipitation over 10 days, with humidity levels around 65%. In contrast, March is much cooler, with temperatures fluctuating from a chilly -11°C (12°F) to an average of 10°C (51°F), reaching a maximum of 22°C (72°F). It has slightly less precipitation at 94 mm (3.7 in) over the same number of days, while humidity is marginally higher at 69%. For more details on March weather, check Frascati weather in March.

When comparing the weather in September and April, notable differences become apparent. September typically experiences a broader temperature range, with minimums around 8°C (47°F) and maximums reaching up to 32°C (90°F), averaging at 21°C (70°F). In contrast, April has a cooler climate, with a minimum temperature of 0°C (33°F) and a maximum of 27°C (80°F), averaging just 13°C (56°F).

Precipitation also varies, with September receiving more rain at 106 mm (4.2 in) over approximately 10 days, while April sees less rainfall of 75 mm (2.9 in) across about 11 days. Additionally, humidity levels in September are around 65%, compared to 70% in April, indicating a slightly more humid feel during the latter month. For more details, check Frascati weather in April.

When comparing September and May weather, September shows a broader temperature range with minimums around 8°C (47°F) and maximums peaking at 32°C (90°F), while May has cooler minimums at 4°C (40°F) and maximums reaching 33°C (92°F). The average temperature in September is slightly warmer at 21°C (70°F) compared to May's average of 18°C (64°F). In terms of precipitation, September experiences more rainfall with 106 mm (4.2 in) over about 10 days, while May has a total of 89 mm (3.5 in) over 12 days. Humidity levels are also slightly higher in May at 70%, compared to 65% in September. For more details, you can check Frascati weather in May.

In comparing the weather between September and June, September typically experiences slightly cooler temperatures, with a minimum of 8°C (47°F) and an average of 21°C (70°F), while June's temperatures start a bit higher at a minimum of 10°C (50°F) and an average of 22°C (72°F). However, June often boasts warmer maximum temperatures, reaching up to 34°C (94°F), compared to September’s 32°C (90°F). Precipitation levels are significantly higher in September, with 106 mm (4.2 in) over 10 days, while June sees only 47 mm (1.9 in) across 7 days, contributing to a drier atmosphere. Humidity remains fairly consistent, with September at 65% and June slightly lower at 61%. For a more detailed view of what to expect during the summer month, check out Frascati weather in June.

In comparing the weather of September and July, it's evident that July experiences warmer temperatures, with an average of 25°C (78°F) and maximums reaching up to 36°C (96°F). This is contrasted by September's milder climate, where temperatures can drop to a minimum of 8°C (47°F) and average around 21°C (70°F). Additionally, July tends to be drier, with only 31 mm (1.2 in) of precipitation over about 4 days, whereas September sees significantly more rain, accumulating 106 mm (4.2 in) over approximately 10 days. Humidity levels are also slightly higher in September at 65%, compared to 57% in July. For a more detailed look at July's weather, check out Frascati weather in July.

September weather presents a noticeable shift compared to August. With temperatures ranging from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), September is cooler on average, with an average temperature of 21°C (70°F). In contrast, August enjoys warmer temperatures, featuring a minimum of 15°C (59°F) and reaching highs of 37°C (99°F), averaging 26°C (79°F). Additionally, September experiences more precipitation at 106 mm (4.2 in) over about 10 days, while August is drier, recording only 28 mm (1.1 in) over 7 days. The humidity also increases in September to 65%, compared to August's more comfortable 53%. For a detailed look at August's weather, you can check Frascati weather in August.

September and October present a notable shift in weather patterns. In September, the temperatures range from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), with an average of 21°C (70°F). The month experiences a total precipitation of 106 mm (4.2 in) over about 10 days, with humidity at 65%. Conversely, October sees cooler temperatures, with a minimum of 6°C (44°F), an average of 16°C (62°F), and a maximum of 28°C (83°F). Interestingly, the precipitation remains the same at 106 mm (4.2 in), also occurring over 10 days, but the humidity rises to 75%. This transition highlights the gradual cooling and increasing moisture typical of autumn. For more specific details, visit Frascati weather in October.

September typically offers a warmer climate with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), making it generally more comfortable for outdoor activities. In contrast, November experiences a notable drop in temperatures, with averages between -1°C (31°F) and 23°C (73°F). Additionally, November is marked by increased precipitation, totaling 191 mm (7.5 in) over 16 days, compared to September's 106 mm (4.2 in) over just 10 days. The humidity also rises in November to 81%, creating a much chillier atmosphere than the more moderate 65% experienced in September. For a detailed look at November weather in Frascati, you can check out Frascati weather in November.

September and December showcase stark contrasts in weather conditions. September typically features mild temperatures, ranging from a minimum of 8°C (47°F) to a warm average of 21°C (70°F) and a maximum of 32°C (90°F). The month also sees moderate precipitation, totaling around 106 mm (4.2 in) across approximately 10 days, with humidity levels at 65%. In contrast, December experiences much colder weather, with temperatures plummeting to a minimum of -3°C (28°F) and an average of 8°C (47°F), peaking at 18°C (64°F). Additionally, December receives more rainfall, accumulating about 170 mm (6.7 in) over 13 days, and exhibits higher humidity at 84%. For more detailed information, you can visit Frascati weather in December.

Compare Frascati's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Frascati

As summer fades into fall, September in Frascati offers a delightful transition with its warm days and cooler nights. The average temperature is noticeably more temperate than the scorching heights of summer, making it an ideal time for outdoor activities. While occasional rain showers may disrupt the sunshine—bringing about 106 mm of precipitation over 10 days—the lush landscapes thrive, adding to the region's charm. The balance of 65% humidity ensures that the air feels refreshingly crisp, especially in the evenings. For those eager to explore the unique weather patterns and their effects on the area, additional insights can be found in our dedicated section on Frascati Climate.