September Weather in Olbia, Italy

Last updated: March 24, 2025

September in Olbia, Italy showcases a delightful transition as summer begins to wane. The average temperature hovers around 23°C (74°F), with maximums peaking at 30°C (86°F), providing plenty of warm days for outdoor activities. On cooler nights, temperatures drop to a minimum of 14°C (58°F), making evenings pleasantly mild. Although the month sees approximately 60 mm (2.4 inches) of precipitation over 6 days, the humidity level stays at a comfortable 68%, ensuring that the coastal charm of Olbia remains inviting. This striking blend of warmth and occasional rainfall makes September a perfect time to explore the stunning landscapes and vibrant culture of this Italian gem.

September Temperature in Olbia

September in Olbia, Italy, marks a delightful transition from the sizzling summer heat to the more temperate embrace of autumn. With minimum temperatures around 14°C (58°F) and averages reaching 23°C (74°F), the month offers pleasant days perfect for exploring the picturesque coastal scenery. Highs can peak at 30°C (86°F), allowing for lingering afternoons on the beach, yet the evenings become comfortably cool. As summer crowds begin to dissipate, September presents an idyllic opportunity to enjoy the stunning landscapes and charming town life without the sweltering heat, making it an ideal time for both relaxation and adventure.

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

The chart illustrates September temperature patterns in Olbia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525354586473787973665954
Data source: Temperature data for Olbia 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 Olbia

September in Olbia, Italy, marks a transition as summer fades into fall, reflected in its precipitation patterns. With 60mm (2.4 inches) of rainfall spread over six days, the month sees a notable increase from the drier summer months of June, July, and August, which collectively barely accumulated more than 25mm total. This significant uptick indicates a shift towards wetter weather, preparing the region for the upcoming autumn. Interestingly, while September's rainfall is considerable, it pales in comparison to the drenching November often brings, where totals can soar to 127mm (5.0 inches). Overall, September offers a balance—still holding onto the warmth of summer while welcoming the refreshing rains that herald the change of season.

September Precipitation Trends in Olbia

The chart displays monthly precipitation patterns in Olbia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec66455355701458605012751
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Olbia

In September, Olbia, Italy, experiences a mild shift in humidity, with levels at 68%—a slight increase from the drier days of summer. This transitional month marks a retreat from the lowest humidity rates observed in July and August, which hovered around 69% and 66% respectively. As autumn approaches, the humidity begins to rise again, preparing the landscape for the wetter months ahead. With October's humidity expected to climb to 75%, September serves as a gentle reminder of the changing seasons, where warmth still lingers in the air but hints of a more humid and refreshing autumn are just around the corner.

September Average Humidity in Olbia

This chart illustrates the average monthly humidity levels in Olbia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec79%72%70%74%72%70%69%66%68%75%78%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Olbia

In September, Olbia, Italy, experiences a UV Index of 7, placing it in the high exposure category with a burn time of just 25 minutes. As summer transitions into autumn, the UV levels begin to decline from their peak in July and August, which both reached a UV Index of 9. This downward trend signals a slight easing of sun intensity compared to those sweltering summer months, where skin protection was essential due to the very high risk of burning. However, with September still maintaining high UV levels, it's crucial to remain vigilant and protect your skin during outdoor activities. For more detailed insights, check out Olbia UV Index.

Maximum UV Index Levels in Olbia for September

The chart shows the monthly maximum UV Index (UVI) for Olbia 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.
JanFebMarAprMayJunJulAugSepOctNovDec3467810997642
Data source: Olbia 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 Olbia

As summer fades, September in Olbia, Italy, still offers a delightful embrace of sunshine, boasting an impressive 341 hours of sunlight. This month signifies a gentle transition from the peak summer brightness of July with its 430 hours and the lush warmth of June at 416 hours. Although the total daylight hours begin to decline, September still shines brighter than the cooler months ahead, revealing a significant drop to 317 hours in October and 255 hours in November. This lingering glow allows visitors to savor the Mediterranean charm of Olbia’s beaches and landscapes, making it a perfect time to enjoy the balmy days before autumn's arrival.

Monthly Sunshine Duration in Olbia: September Highlighted

The September sunshine duration represents the total number of hours Olbia 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.
JanFebMarAprMayJunJulAugSepOctNovDec203h266h330h355h408h416h430h398h341h317h255h252h
Data source: Olbia September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Olbia During September

In Olbia, Italy, the likelihood of sunny weather in September stands at 49%, marking a slight dip from the summer peak but maintaining a favorable chance for outdoor activities. This month follows the sun-soaked heights of July and August, which boast probabilities of 75% and 76% respectively. As summer transitions into autumn, September offers mild temperatures with just enough sunshine, making it an ideal time for visitors seeking to enjoy the lingering warmth and beauty of the region before the rainy season begins. The consistent sunshine from earlier months lingers into September, creating a pleasant atmosphere despite the slight decline in sunny days.

Percentage of Sunny Days in September in Olbia

The chart illustrates the percentage of sunny days in Olbia 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 Olbia experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec36%51%56%50%53%65%75%76%49%49%35%53%
Data source: Olbia September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Olbia in September

As summer transitions to autumn in Olbia, Italy, September marks a delightful shift in daylight duration. Enjoying an inviting 12 hours of daylight, this month captures the essence of the lingering warmth as the sun hangs a bit longer in the sky compared to the shorter days of October. After peaking in June with 15 hours, daylight gradually decreases, yet September maintains a generous amount, providing plenty of time for outdoor exploration and activities. This dynamic rhythm of daylight throughout the months not only highlights the beauty of each season but also sets a charming backdrop for both locals and visitors to savor the last precious days of summer.

Average Daylight Hours in Olbia for September

The chart illustrates the variation in daylight duration in Olbia throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 35m10h 38m11h 57m13h 19m14h 28m15h 2m14h 44m13h 43m12h 25m11h 4m9h 53m9h 16m
Data source: Olbia daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Olbia

In September, the winds in Olbia, Italy begin to gently taper off, with an average speed of 3.9 m/s (9 mph). This marks a notable decline from the summer months, as the region transitions from warm, breezy days to the softer conditions of autumn. While wind speeds are generally lower during this time compared to the summer peak, they still provide a refreshing contrast to the lingering warmth of the Mediterranean sun. Notably, this trend of diminished wind continues into October, signaling the onset of a more tranquil shoreline experience, perfect for leisurely strolls along the coast and enjoying the serene beauty of the changing season.

Average September Wind Speed in Olbia

The chart displays monthly wind speed patterns in Olbia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.04.84.24.14.93.64.44.13.9 m/s4.24.45.2
Data source: Olbia September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Olbia Compares to Other Months

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

September generally offers warmer temperatures compared to January, with averages reaching up to 23°C (74°F) and maxing out at 30°C (86°F). In contrast, January sees cooler weather, with an average temperature of 11°C (52°F) and highs around 18°C (65°F). While September has a lower humidity level of 68%, January experiences higher humidity at 79%. Additionally, precipitation levels are quite similar, with September receiving 60 mm (2.4 in) over 6 days, while January has 66 mm (2.6 in) across 7 days. For more detailed insights into January weather, check out Olbia weather in January.

September and February present contrasting weather conditions. In September, temperatures range from a mild 14°C (58°F) at night to a warm 30°C (86°F) during the day, with an average temperature of 23°C (74°F). This month also sees about 60 mm (2.4 in) of precipitation over 6 days and a humidity level of 68%. In contrast, February experiences much cooler temperatures, with lows of 2°C (36°F) and highs reaching only 19°C (67°F), resulting in an average of 12°C (53°F). While February encounters slightly less precipitation at 44 mm (1.8 in) over 7 days, the humidity rises to 72%. For a closer look at February weather in Olbia, check out this link: Olbia weather in February.

In September, the weather is decidedly warmer, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 30°C (86°F), creating a pleasant environment for outdoor activities. The month sees about 60 mm (2.4 in) of rainfall over approximately 6 days, with relative humidity around 68%. In contrast, March experiences much cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 19°C (67°F), averaging at 12°C (54°F). Although it is slightly drier, March still has around 53 mm (2.1 in) of precipitation spread across 8 days, accompanied by a humidity level of 70%. For detailed weather conditions, check out Olbia weather in March.

When comparing the weather in September and April, notable differences in temperature and precipitation patterns emerge. September boasts a warmer climate, with average temperatures reaching 23°C (74°F) and maximums peaking at 30°C (86°F). In contrast, April sees cooler averages around 14°C (58°F) and highs of just 23°C (73°F). While both months experience some rainfall, September has a slightly higher total precipitation of 60 mm (2.4 in) over 6 days, compared to April’s 55 mm (2.2 in) spread over 10 days, indicating a wetter April relative to the number of days it rains. Additionally, humidity levels are higher in April at 74%, compared to 68% in September. For more detailed insights into spring weather, check out Olbia weather in April.

In comparing the weather between September and May, September tends to be warmer, with average temperatures around 23°C (74°F), peaking at a maximum of 30°C (86°F). In contrast, May has a cooler average temperature of 18°C (64°F), with a high of 28°C (82°F). Both months experience similar levels of precipitation, with September seeing 60 mm (2.4 in) over about 6 days, while May has slightly higher precipitation at 70 mm (2.7 in) spread across 7 days. Humidity levels are also comparable, with September at 68% and May slightly higher at 72%. For more specific insights, check Olbia weather in May.

When comparing the weather in September and June, we find some interesting similarities and differences. Both months feature a minimum temperature of around 14°C (58°F), with an average temperature of 23°C (74°F) in September and 23°C (73°F) in June. However, June can occasionally get warmer, with a maximum temperature reaching up to 32°C (90°F), compared to 30°C (86°F) in September. Additionally, September tends to be wetter, receiving 60 mm (2.4 in) of precipitation over 6 days, while June is relatively dry with only 14 mm (0.5 in) of rain over 3 days. The humidity levels are quite similar as well, sitting at 68% in September and 70% in June. For more detailed insights, you can check out Olbia weather in June.

In comparing the weather between July and September, July tends to be warmer with average temperatures around 26°C (78°F), peaking at a maximum of 33°C (92°F). In contrast, September sees slightly cooler conditions, with an average temperature of 23°C (74°F) and a maximum of 30°C (86°F). Additionally, July experiences significantly less precipitation, with only 5 mm (0.2 in) over just one day, while September has 60 mm (2.4 in) spread across six days, indicating a wetter month. Humidity levels are relatively similar, hovering around 68% in September and 69% in July, making both months feel comfortably humid. For more specifics about the weather during this time, check Olbia weather in July.

In comparing the weather between September and August, September tends to be slightly cooler, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 30°C (86°F), while August features a warmer range with evening lows of 19°C (67°F) and highs reaching up to 34°C (94°F). Additionally, September experiences more rainfall, averaging 60 mm (2.4 in) over 6 days, compared to August's scant 8 mm (0.3 in) across just 2 days of precipitation. Despite the higher humidity levels in September at 68%, both months offer enjoyable summer conditions, but August remains the hotter option. For a detailed look at August weather, you can check Olbia weather in August.

September and October exhibit noticeable changes in weather patterns. In September, temperatures are generally warmer, with a minimum of 14°C (58°F), an average of 23°C (74°F), and a maximum of 30°C (86°F). The month experiences 60 mm (2.4 in) of precipitation across about 6 days, and humidity averages around 68%. In contrast, October sees slightly cooler temperatures, with a minimum of 12°C (53°F), an average of 19°C (66°F), and a maximum of 28°C (82°F). Although there is a decrease in total precipitation to 50 mm (2.0 in), it occurs over more days—about 8 days—with humidity rising to 75%. For more details on October's weather, you can visit Olbia weather in October.

September and November weather exhibit notable differences in temperature and precipitation. In September, temperatures range from a mild minimum of 14°C (58°F) to a warm maximum of 30°C (86°F), with an average of 23°C (74°F). This month typically sees about 60 mm (2.4 in) of rainfall over six days, and humidity levels are relatively comfortable at 68%.

In contrast, November brings a significant drop in temperatures, with minimums reaching just 6°C (44°F) and averages around 15°C (59°F). The maximum temperature is also lower, peaking at 22°C (72°F). This month is much wetter, with precipitation totaling 127 mm (5.0 in) across 14 days and higher humidity at 78%. For a more detailed look at November weather in this region, you can visit Olbia weather in November.

In September, the weather is typically warmer with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 30°C (86°F), averaging around 23°C (74°F). The month sees about 60 mm (2.4 in) of precipitation over 6 days, with a humidity level of 68%. In contrast, December brings cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 18°C (66°F), averaging just 12°C (55°F). Although December has slightly less precipitation at 51 mm (2.0 in) over 8 days, it does have a higher humidity of 76%, making the air feel quite damp. For more details on what to expect during this month, check out Olbia weather in December.

Compare Olbia's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Olbia

As the summer gives way to autumn, September in Olbia offers a delightful transition with warm temperatures and a touch of humidity. Unlike the peak summer months, where sweltering heat reigns, September presents a more comfortable average of 23°C (74°F), making it ideal for outdoor activities. While you can expect some rainfall, with about six days of precipitation throughout the month, it rarely dampens the vibrant charm of this coastal town. The reduced crowds and milder climate make September a perfect time to explore the stunning beaches and rich culture of Olbia. For more insights on the seasonal variations, check the detailed Olbia Climate.