September Weather in Grantown on Spey, United Kingdom

Last updated: March 17, 2025

September in Grantown on Spey, United Kingdom, offers a diverse weather experience, with temperatures ranging from a cool 1°C (34°F) at night to a comfortable maximum of 24°C (75°F) during the day. The month features an average temperature of 10°C (51°F), making it a transitional period as autumn approaches. Rainfall is prevalent, with 91 mm (3.6 in) of precipitation over 16 days, contributing to a notable humidity level of 90%. Visitors should prepare for frequent showers while enjoying the uniquely vibrant autumn landscape that emerges in this picturesque Scottish town.

September Temperature in Grantown on Spey

In September, temperatures in Grantown on Spey begin to transition towards autumn, showcasing a refreshing balance of warmth and coolness. The minimum temperature hovers around 1°C (34°F), while the average climbs to a comfortable 10°C (51°F). Daytime beckons with highs reaching up to 24°C (75°F), offering a delightful mix of crisp mornings and pleasantly warm afternoons. This month marks a gentle departure from the summer warmth seen in August, with September temperatures reflecting a steady decline as the region prepares for the cooler months ahead. It's a time when the charm of the Highlands begins to emerge, with the landscape often adorned in hues of gold and amber, making it a perfect month for exploration and enjoying the natural beauty of the outdoors.

September Weather in Grantown on Spey: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Grantown on Spey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353538414753565451453936
Data source: Temperature data for Grantown on Spey 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 Grantown on Spey

In September, Grantown on Spey experiences a notable precipitation amount of 91 mm (3.6 in), accompanied by 16 days of rain. This marks a slight dip compared to the preceding months of August and July, which recorded higher rainfall levels of 95 mm and 93 mm respectively. However, September remains a significant month for precipitation, indicative of the transition into autumn. As the year progresses, the rainfall begins to intensify, with October set to see a further increase to 111 mm, bringing an average of 20 rainy days. These patterns reflect a trend of rising precipitation in the lead-up to the wetter autumn months, providing essential moisture for the lush landscapes typical of this region.

September Precipitation Trends in Grantown on Spey

The chart displays monthly precipitation patterns in Grantown on Spey, 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.
JanFebMarAprMayJunJulAugSepOctNovDec68797955961009395911119796
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grantown on Spey

As summer transitions to autumn, September in Grantown on Spey brings a noticeable spike in humidity, reaching 90%, which is the highest level recorded since January. This increase marks a shift from the more moderate levels experienced in the warmer months, such as the 82% humidity in May and 86% in both July and August. The trend continues into October, with humidity rising even further to 91%, setting the stage for a damp and cool fall. Overall, September acts as a bridge, highlighting the gradual increase in humidity as the year progresses towards its wetter months, culminating in the year's highest averages in November and December.

September Average Humidity in Grantown on Spey

This chart illustrates the average monthly humidity levels in Grantown on Spey, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%82%84%86%86%90%91%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grantown on Spey

In September, Grantown on Spey experiences a UV Index of 5, placing it in the moderate exposure category. This signifies a transition from the peak summer months, where the UV levels were higher, notably reaching 8 in June and 7 in July. As the days shorten and the sun's intensity begins to wane, residents and visitors still need to be mindful of their sun exposure, with a burn time of approximately 30 minutes for unprotected skin. This trend of decreasing UV levels from summer to autumn is common, making it essential to stay informed about local conditions. For more details, visit Grantown on Spey UV Index.

Maximum UV Index Levels in Grantown on Spey for September

The chart shows the monthly maximum UV Index (UVI) for Grantown on Spey 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: Grantown on Spey 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 Grantown on Spey

September in Grantown on Spey welcomes a stunning 297 hours of sunshine, marking a graceful transition into autumn. As summer's warmth begins to fade, this month still enjoys ample sunlight, falling behind the peak of July with its impressive 413 hours but remaining markedly brighter than the winter months. The gradual decline in daylight from the sun-drenched days of May and June reflects the annual rhythm of nature, yet September's generous glow allows residents and visitors alike to savor the scenic landscapes bathed in warm hues. With each passing month, as the hours of sunlight dwindle, the crisp autumn air invites a refreshing change, making September a perfect time to experience the beauty of Grantown on Spey before the daylight hours dip further into the winter months.

Monthly Sunshine Duration in Grantown on Spey: September Highlighted

The September sunshine duration represents the total number of hours Grantown on Spey 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.
JanFebMarAprMayJunJulAugSepOctNovDec77h139h215h334h401h399h413h373h297h215h111h84h
Data source: Grantown on Spey September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Grantown on Spey During September

September in Grantown on Spey sees a 21% chance of sunny weather, which is a slight uptick compared to the preceding summer months. While the sunshine probability hovers consistently around the lower end of the spectrum throughout the year, September offers a small respite from the gloomier winter months, where chances dip to 15% in October and November. This gradual transition from summer to autumn signifies that while sunny days may be fewer, the arrival of early autumn still carries a hint of warmth and brightness, making September a delightful time to enjoy the stunning landscapes of the Highlands.

Percentage of Sunny Days in September in Grantown on Spey

The chart illustrates the percentage of sunny days in Grantown on Spey 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 Grantown on Spey experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%26%19%39%17%22%22%16%21%15%15%20%
Data source: Grantown on Spey September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Grantown on Spey in September

As summer transitions into autumn, September in Grantown on Spey witnesses a gentle decline in daylight hours, with an average of 12 hours of daylight. After basking in the long, sunlit days of July and August, the shift to September brings a noticeable difference, as daylight begins to dwindle towards October’s shorter duration of 10 hours. This gradual decrease reflects a broader trend throughout the year, where the longest days peak in the summer months before giving way to the cozy, shorter days of fall. The shift makes September a perfect time to appreciate the lingering warmth and light, as nature prepares for the quiet embrace of winter.

Average Daylight Hours in Grantown on Spey for September

The chart illustrates the variation in daylight duration in Grantown on Spey throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 24m9h 27m11h 53m14h 21m16h 36m17h 50m17h 10m15h 7m12h 42m10h 15m7h 59m6h 44m
Data source: Grantown on Spey daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Grantown on Spey

As September rolls around in Grantown on Spey, the wind begins to pick up slightly, with an average speed of 3.2 m/s (7 mph). This marks a return to the more breezy conditions reminiscent of earlier months in the year, particularly January and April, which also feature similar wind speeds. Following the gentle lull of the summer months, where July and August see notably lighter winds at 2.2 m/s (5 mph) and 2.6 m/s (6 mph), September offers a refreshing shift. This subtle increase hints at the transition into autumn, as the winds prepare to gather strength leading into October, when gusts are anticipated to rise again to 4.2 m/s (9 mph). Overall, September represents a balanced moment in Grantown on Spey's yearly climatic rhythm, bridging the calm of summer with the impending vibrancy of fall.

Average September Wind Speed in Grantown on Spey

The chart displays monthly wind speed patterns in Grantown on Spey, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.25.14.33.23.03.52.22.63.2 m/s4.24.83.6
Data source: Grantown on Spey September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Grantown on Spey Compares to Other Months

The weather in Grantown on Spey 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 Grantown on Spey and find detailed weather information for every month.

In September, the weather is relatively mild, with temperatures ranging from a cool 1°C (34°F) at night to a warm 24°C (75°F) during the day, averaging around 10°C (51°F). The month experiences approximately 91 mm (3.6 in) of precipitation over 16 days, coupled with high humidity levels at 90%. In contrast, January brings significantly colder conditions, with temperatures dropping as low as -12°C (11°F) and averaging around 2°C (35°F). The maximum temperature reaches only 11°C (52°F), and while January sees less precipitation at 68 mm (2.7 in) over 12 days, the humidity remains high at 89%. For more detailed information, you can check the Grantown on Spey weather in January.

September and February exhibit markedly different weather patterns. September boasts a wider temperature range, with minimums reaching 1°C (34°F) and maximums soaring up to 24°C (75°F), while February experiences much colder temperatures, dropping as low as -16°C (4°F) with a maximum of only 14°C (57°F). September also tends to be wetter, receiving 91 mm (3.6 in) of precipitation over 16 days, compared to February's 79 mm (3.1 in) across 15 days. Both months see high humidity levels, with September at 90% and February slightly lower at 88%. For more detailed insights, you can check out Grantown on Spey weather in February.

In September, temperatures in Grantown on Spey range from a minimum of 1°C (34°F) to a comfortable maximum of 24°C (75°F), making it generally warmer than March, where the temperature varies from a chilly -8°C (17°F) to a maximum of 15°C (60°F). September experiences an average of 10°C (51°F) and sees about 91 mm (3.6 in) of precipitation over 16 days, whereas March has slightly less precipitation at 79 mm (3.1 in) across 17 days. Despite March being cooler, both months have high humidity levels, with September at 90% and March at 86%. For more detailed information, you can visit Grantown on Spey weather in March.

When comparing the weather in September and April, we see notable differences in temperature and precipitation. September boasts a wider temperature range, with minimums around 1°C (34°F) and maximums reaching up to 24°C (75°F), while April has lower temperatures, dipping to a minimum of -7°C (21°F) and a maximum of 19°C (67°F). Additionally, September experiences more rainfall, totaling 91 mm (3.6 in) over 16 days, compared to April's 55 mm (2.2 in) spread over 12 days. Despite the slightly higher humidity in September at 90%, April maintains a relatively high level at 84%. For more details on April's weather in Grantown on Spey, you can refer to Grantown on Spey weather in April.

September and May present contrasting weather patterns, with September generally offering warmer temperatures. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 24°C (75°F), resulting in an average of 10°C (51°F). In contrast, May experiences slightly cooler conditions, with temperatures varying from a low of -4°C (26°F) to a high of 23°C (74°F), averaging 8°C (47°F). Precipitation levels are comparable, with September receiving 91 mm (3.6 in) over 16 days and May slightly higher at 96 mm (3.8 in) across 18 days. Humidity is higher in September at 90%, while May's humidity is a more moderate 82%. For a detailed look at the weather trends during this month, you can visit Grantown on Spey weather in May.

When comparing the weather in September and June, several notable differences emerge. September experiences a wider temperature range, with a minimum of 1°C (34°F) and a maximum of 24°C (75°F), leading to a comfortable average of 10°C (51°F). In contrast, June tends to be slightly cooler overall, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 26°C (79°F) and an average temperature of 12°C (53°F). While both months see a similar number of precipitation days (16), September has slightly less rainfall, totaling 91 mm (3.6 in) compared to June's 100 mm (3.9 in). Additionally, September's humidity is higher at 90%, making it feel more muggy than the slightly less humid June at 84%. For a detailed look at June's weather, you can visit Grantown on Spey weather in June.

In comparing the weather between September and July, we see some notable differences. September tends to have slightly cooler temperatures, with a minimum of 1°C (34°F) compared to July's minimum of 2°C (36°F). Both months share a maximum of around 24°C (75°F), but September's average temperature is lower at 10°C (51°F) versus July's 13°C (56°F). Precipitation levels are quite similar, with September receiving 91 mm (3.6 in) over 16 days and July slightly higher at 93 mm (3.7 in) across 18 days. Additionally, September has a higher humidity level at 90%, compared to July's 86%. For a closer look at conditions specific to July, you can check out Grantown on Spey weather in July.

In comparing the weather between September and August, September typically experiences slightly cooler temperatures, with a minimum of 1°C (34°F) compared to August's minimum of 3°C (38°F). The average temperature in September is around 10°C (51°F), while August maintains a higher average at 12°C (55°F). Both months see similar levels of precipitation, with September recording 91 mm (3.6 in) over 16 days and August slightly higher at 95 mm (3.7 in) over 19 days. Humidity levels are also a bit higher in September, averaging 90% compared to August's 86%. For more detailed information on August's weather, you can check Grantown on Spey weather in August.

September and October present a notable transition in weather conditions. While September enjoys a mild average temperature of 10°C (51°F) with highs reaching up to 24°C (75°F), October sees a drop in averages to 7°C (45°F), with maximum temperatures peaking at 16°C (62°F). Additionally, October experiences an increase in precipitation, with 111 mm (4.4 in) of rainfall over 20 days, compared to September's 91 mm (3.6 in) over 16 days. Humidity remains relatively high in both months, at 90% in September and slightly higher at 91% in October. This shift signals a gradual move towards cooler and wetter conditions as autumn deepens. For more detailed insights, you can check Grantown on Spey weather in October.

In September, the weather tends to be milder, with minimum temperatures around 1°C (34°F) and average highs reaching up to 24°C (75°F). Despite this warmth, it sees considerable precipitation, totaling 91 mm (3.6 in) over approximately 16 days, alongside high humidity levels of 90%. In contrast, November brings a significant drop in temperatures, with lows plummeting to -8°C (18°F) and a much cooler average of 4°C (40°F). Although November experiences slightly more rainfall at 97 mm (3.8 in) over 18 days, the increased humidity of 92% adds to the overall chill in the air. For more detailed information, you can check Grantown on Spey weather in November.

September and December present contrasting weather conditions in Grantown on Spey. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 24°C (75°F), with an average of 10°C (51°F). The month is characterized by relatively high humidity at 90% and sees approximately 91 mm (3.6 in) of rainfall over 16 days. In contrast, December experiences colder temperatures, with a minimum of -11°C (12°F), an average of 2°C (36°F), and a maximum of 11°C (52°F). The precipitation during December is slightly higher at 96 mm (3.8 in), also spread across 16 days, while humidity levels remain at a modest 88%. For more detailed information, you can check Grantown on Spey weather in December.

Compare Grantown on Spey's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Grantown on Spey

As September rolls into Grantown on Spey, the weather makes a noticeable shift, blending the warmth of summer with the crispness of autumn. With average temperatures resting at a cool 10°C (51°F) and reaching a pleasant 24°C (75°F) at times, this month offers a unique contrast to the more extreme temperatures of July and August. However, the increase in humidity, peaking at 90%, combined with 91 mm of rainfall over 16 days, introduces a fair amount of wet conditions, distinguishing September from the drier summer months. Despite the frequent showers, the vibrant colors emerging in the landscape make it a perfect time for exploring this Scottish gem. For a more in-depth look at the climate variations throughout the year, visit Grantown on Spey Climate.