September Weather in Edinburgh, United Kingdom

Last updated: March 17, 2025

September in Edinburgh, United Kingdom offers a delightful blend of mild temperatures and vibrant autumn colors. With maximum daytime highs reaching up to 25°C (77°F), the city experiences an inviting warmth, while the average temperature hovers around 13°C (56°F). As the season transitions, nights can be cool, dipping to a minimum of 2°C (35°F). This month sees an average precipitation of 68 mm (2.7 in) over 12 days, contributing to the lush landscapes Edinburgh is known for. Despite the frequent showers, humidity levels remain high at 88%, creating a refreshing atmosphere for both locals and visitors alike.

September Temperature in Edinburgh

As September settles in Edinburgh, the city experiences a gentle transition from summer's warmth to the crispness of autumn. Average temperatures hover around 13°C (56°F), showing a noticeable dip from the height of summer, but with days still reaching as high as 25°C (77°F), it’s not uncommon to enjoy a few lingering sun-soaked afternoons. The evenings start to chill, with minimum temperatures dropping to 2°C (35°F), hinting at the cozy nights ahead. This blend of mild daytime warmth and refreshing nights creates a perfect atmosphere for enjoying the vibrant cityscape, making September an ideal time for both outdoor exploration and settling into delightful indoor spaces.

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

The chart illustrates September temperature patterns in Edinburgh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec404143465257605955504541
Data source: Temperature data for Edinburgh 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 Edinburgh

September in Edinburgh sees moderate precipitation, with an average of 68 mm (2.7 in) of rain spread across approximately 12 days. This month falls in the midst of a transition, as summer's warmth gives way to the crispness of autumn. The precipitation levels reflect a dip from the wetter August, yet they still maintain a steady rhythm, indicative of the city’s reputation for changeable weather. As October approaches with its looming higher rainfall of 93 mm (3.7 in), September serves as a gentle precursor, reminding residents and visitors alike of Scotland’s verdant landscapes nurtured by these frequent showers.

September Precipitation Trends in Edinburgh

The chart displays monthly precipitation patterns in Edinburgh, 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.
JanFebMarAprMayJunJulAugSepOctNovDec568878355878749168947277
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Edinburgh

As September rolls into Edinburgh, the city experiences a noticeable shift in humidity levels, rising to 88%. This increase marks a slight uptick from the summer months, where humidity hovered around 82%. It’s part of a broader trend, as humidity in Edinburgh tends to elevate as the year progresses, peaking in the cooler autumn months. With October looming and a humidity forecast of 90%, residents can expect the air to feel increasingly damp as the picturesque city transitions from the warmth of summer towards the chill of winter. This seasonal rhythm emphasizes Edinburgh's unique climate, where the air often feels moist and invigorating, shaping the charm of this historic city.

September Average Humidity in Edinburgh

This chart illustrates the average monthly humidity levels in Edinburgh, 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.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%85%81%83%82%82%88%90%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Edinburgh

As summer bids farewell, September in Edinburgh experiences a shift in the UV Index, landing at a moderate level of 5. This represents a slight decline from the more intense summer months, yet still requires caution, with a burn time of about 30 minutes for unprotected skin. The trend throughout the year shows that as temperatures drop, so too does the sun's intensity, moving from the very high levels seen in June at 8 to a more manageable rating as autumn approaches. With the moderate UV Index, it's important for residents and visitors alike to remain mindful of sun safety while enjoying the early autumn days. For more detailed information, refer to the Edinburgh UV Index.

Maximum UV Index Levels in Edinburgh for September

The chart shows the monthly maximum UV Index (UVI) for Edinburgh 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.
JanFebMarAprMayJunJulAugSepOctNovDec123568765311
Data source: Edinburgh 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 Edinburgh

September brings a delightful transition in Edinburgh, as the days gradually shorten yet still offer a generous 283 hours of sunshine. This charming month reflects a subtle shift from the sunny peak of summer, evidenced by August’s impressive 352 hours. While the warmth of late summer lingers, there’s a palpable hint of autumn in the air. The city benefits from a substantial increase in sunshine compared to the chillier months ahead, positioning September as a perfect time to explore Edinburgh’s rich history and breathtaking landscapes, bathed in soft, golden light. As the year progresses, the sunlight begins to dwindle, reminiscent of the vibrant energy that characterizes the earlier summer months.

Monthly Sunshine Duration in Edinburgh: September Highlighted

The September sunshine duration represents the total number of hours Edinburgh 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.
JanFebMarAprMayJunJulAugSepOctNovDec77h131h195h325h394h371h390h352h283h203h111h77h
Data source: Edinburgh September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Edinburgh During September

As summer gracefully transitions into autumn, the likelihood of sunny weather in September in Edinburgh remains modest, with only a 20% chance of sunshine. This marks a slight dip from the previous months of August and July, which both hover around 23% and 26% respectively. Interestingly, the trend suggests that after a spirited spring in April—where the chances of sun rise to 46%—the sunny days begin to wane as the year progresses. Thus, while there are still opportunities for pleasant weather, visitors should be prepared for the increasing unpredictability of the Scottish skies as they embrace the crisp charm of early autumn.

Percentage of Sunny Days in September in Edinburgh

The chart illustrates the percentage of sunny days in Edinburgh 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 Edinburgh experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%23%21%46%26%21%26%23%20%19%31%18%
Data source: Edinburgh September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Edinburgh in September

As we transition into September, Edinburgh experiences a noticeable shift in daylight, with the hours of sunlight settling at 12 hours. This marks a gentle but significant decrease from the sun-drenched days of August, which basked in 14 hours of daylight. The summer months, with their peak in June at 17 hours, start to recede, hinting at the arrival of autumn. Following September, October will further reduce daylight to just 10 hours, emphasizing the anticipated seasonal change. This gradual decline in daylight not only reflects the shifting seasons but also invites the vibrant hues of autumn, encouraging residents to savor the remaining sunlit moments before the evenings grow longer.

Average Daylight Hours in Edinburgh for September

The chart illustrates the variation in daylight duration in Edinburgh throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 39m9h 35m11h 53m14h 15m16h 21m17h 30m16h 53m14h 58m12h 40m10h 20m8h 12m7h 1m
Data source: Edinburgh daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Edinburgh

As summer transitions to autumn in Edinburgh, September ushers in a gentle breeze with an average wind speed of 3.5 m/s (8 mph). While this marks a slight increase from the calmer days of July and August, it remains relatively mild compared to the stronger gusts typical of the later fall months. The wind speeds, previously dipping to their lowest in the height of summer, begin their slow ascent, hinting at the approaching change in weather. This subtle rise captures the essence of Edinburgh in September—a time of year when the city breathes in the fresh air, preparing for the cooler, more turbulent winds of October and November.

Average September Wind Speed in Edinburgh

The chart displays monthly wind speed patterns in Edinburgh, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.75.84.93.13.23.82.52.83.5 m/s4.75.14.0
Data source: Edinburgh September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Edinburgh Compares to Other Months

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

September and January in Edinburgh present distinct weather contrasts. September tends to be milder, with average temperatures ranging from 2°C (35°F) to a comfortable 25°C (77°F), showing a notable warmth that encourages outdoor activities. It also experiences more precipitation, with about 68 mm (2.7 inches) over 12 days, contributing to a humidity level of 88%. In contrast, January is colder, with average temperatures between -5°C (24°F) and 14°C (57°F), creating a chilling atmosphere with a typical average of only 5°C (41°F). The month sees slightly less rainfall at 56 mm (2.2 inches) over 9 days, and a higher humidity level of 90%. For more detailed information on January weather in Edinburgh, visit Edinburgh weather in January.

In comparing the weather of September and February, notable differences emerge in temperature and precipitation. September enjoys a milder climate with average temperatures ranging from a minimum of 2°C (35°F) to a maximum of 25°C (77°F), while February is much colder, with average temperatures ranging from a minimum of -7°C (19°F) to a maximum of 15°C (59°F). Both months experience high humidity levels of 88%, but February sees increased precipitation, totaling 88 mm (3.4 in) over 15 days compared to September's 68 mm (2.7 in) over 12 days. For a detailed look at February's weather in Edinburgh, check out Edinburgh weather in February.

In comparing the weather of September and March, September boasts a milder temperature range with a minimum of 2°C (35°F) and an average of 13°C (56°F), reaching up to a maximum of 25°C (77°F). Conversely, March is cooler, with temperatures dropping to a minimum of -4°C (25°F) and an average of 6°C (43°F), peaking at 17°C (63°F). Precipitation levels are comparable, with September receiving 68 mm (2.7 in) over 12 days, while March has slightly more at 78 mm (3.1 in) over 15 days. Humidity remains relatively high in both months, with September at 88% and March at 86%. For more detailed information about the weather in March, check out Edinburgh weather in March.

September and April present distinct weather contrasts. In September, temperatures are generally milder, with a minimum of 2°C (35°F) and an average of 13°C (56°F), peaking at a comfortable maximum of 25°C (77°F). This month also sees a higher amount of precipitation at 68 mm (2.7 in) over 12 days, contributing to a humid environment at 88%. In contrast, April experiences cooler conditions, featuring a minimum temperature that can drop to -4°C (25°F) and an average of 8°C (46°F), with a maximum of 22°C (71°F). Additionally, April has less rainfall, totaling 35 mm (1.4 in) across 9 days and slightly lower humidity at 85%. For more specific details, check out Edinburgh weather in April.

When comparing the weather in September and May, we see notable differences in temperature and precipitation patterns. September boasts a wider temperature range, with minimums around 2°C (35°F) and maximums reaching up to 25°C (77°F), averaging at 13°C (56°F). In contrast, May has slightly cooler averages, with temperatures ranging from 1°C (34°F) to a maximum of 26°C (80°F), resulting in an average of 11°C (52°F). Precipitation levels also vary, as September experiences 68 mm (2.7 in) of rain over 12 days, while May has a bit less at 58 mm (2.3 in) over the same number of days. Additionally, humidity is higher in September at 88% compared to 80% in May. For more detailed information, you can check Edinburgh weather in May.

In comparing the weather of September and June, it is evident that both months experience mild temperatures, though September tends to have a slightly greater temperature range. September sees minimum temperatures of 2°C (35°F) and maximums of 25°C (77°F), with an average of 13°C (56°F). In contrast, June offers milder evenings with minimums of 6°C (43°F) and maximums reaching 27°C (81°F), yielding an average of 14°C (57°F). Both months experience significant precipitation, with September receiving 68 mm (2.7 in) over approximately 12 days and June seeing a bit more, at 78 mm (3.1 in) over 13 days. Humidity levels remain high in both months, with September slightly higher at 88% compared to June's 83%. For more detailed information, check out Edinburgh weather in June.

In comparing the weather of September and July, September tends to be cooler, with minimum temperatures dropping to 2°C (35°F) and an average of 13°C (56°F), while July's minimum starts at a milder 7°C (46°F) and averages 15°C (60°F). The maximum temperatures also reflect this trend, reaching 25°C (77°F) in September compared to 28°C (83°F) in July. Although September experiences a slightly lower total precipitation of 68 mm (2.7 in) over 12 days, it has a higher humidity level at 88%, compared to July's 82% humidity and 74 mm (2.9 in) of rain over 14 days. For more detailed information, you can check out Edinburgh weather in July.

When comparing the weather of September and August, notable differences emerge. September experiences cooler temperatures, with a minimum of 2°C (35°F) and an average of 13°C (56°F), while August sees milder conditions, with a minimum of 7°C (44°F) and an average of 15°C (59°F). The maximum temperature in both months is fairly similar, peaking at 25°C (77°F) in September and 26°C (79°F) in August. Additionally, September has slightly less precipitation at 68 mm (2.7 in) over 12 days, compared to August's 91 mm (3.6 in) over 15 days. Humidity remains high in both months, with September at 88% and August at 82%. For more detailed information, you can check Edinburgh weather in August.

In September, temperatures in Edinburgh range from a minimum of 2°C (35°F) to a maximum of 25°C (77°F), with an average of 13°C (56°F). The month sees a moderate amount of precipitation totaling 68 mm (2.7 in) over about 12 days, while humidity remains relatively high at 88%. In contrast, October brings cooler temperatures, with a minimum dipping to -1°C (31°F) and a maximum of 19°C (67°F), averaging 10°C (51°F). Rainfall also increases, with 93 mm (3.7 in) spread across 16 days and humidity slightly rising to 90%. For more details on the October climate in Edinburgh, check out Edinburgh weather in October.

September tends to be milder with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 25°C (77°F), and an average temperature of 13°C (56°F). The month experiences about 68 mm (2.7 in) of precipitation over 12 days, accompanied by high humidity levels at 88%. In contrast, November ushers in cooler conditions, with temperatures dipping between -4°C (25°F) and 15°C (59°F), resulting in an average of 7°C (45°F). This month sees a slightly higher precipitation of 72 mm (2.9 in) over 14 days, and humidity increases to 92%. For more specific insights into this month, check out Edinburgh weather in November.

September and December exhibit notably different weather patterns in terms of temperature, precipitation, and humidity. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 25°C (77°F), with an average of 13°C (56°F). This month sees about 68 mm (2.7 in) of precipitation over 12 days, coupled with a high humidity of 88%. In contrast, December experiences cooler temperatures with a minimum of -5°C (23°F), an average of 5°C (41°F), and a maximum of 13°C (56°F). Precipitation increases to 77 mm (3.0 in) over 14 days, while humidity remains comparably high at 89%. For more detailed insights into the weather in December, please visit Edinburgh weather in December.

Compare Edinburgh's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Edinburgh

As September unfolds in Edinburgh, the city transitions into the heart of autumn, offering a blend of cool, crisp days and lingering warmth. With an average temperature around 13°C, the weather is noticeably milder than the chill of the approaching winter months, but still significantly cooler compared to the summer's highs. Rainfall becomes more frequent, with 12 days of precipitation contributing to the lush landscapes that characterize this time of year. The high humidity, often hovering at 88%, adds a certain freshness to the air, making it feel vibrant yet damp. For those looking to understand how Edinburgh's climate evolves with the seasons, please visit Edinburgh Climate.