September Weather in Kelso, United Kingdom

Last updated: March 17, 2025

September in Kelso, United Kingdom, showcases a dynamic climate marked by an impressive maximum temperature reaching 27°C (81°F) and a cooler average of 12°C (54°F). The month also experiences chilly nights, with temperatures dipping to a minimum of 1°C (34°F). Rainfall is prevalent, with 64 mm (2.5 in) accumulating over approximately 14 days, creating a humid atmosphere characterized by a high humidity level of 88%. This blend of warmth and moisture paints a vivid picture of the transitional season as summer wanes and autumn approaches.

September Temperature in Kelso

In September, Kelso, United Kingdom, experiences a delightful transition as summer fades into autumn, marked by a minimum temperature of 1°C (34°F) and a pleasantly warm maximum of 27°C (81°F). The average temperature sits around 12°C (54°F), signaling a shift towards cooler days compared to the earlier summer months. This gradual decline is evident when compared to August, where both the minimum and maximum temperatures are slightly higher. September offers a unique blend of mild warmth, making it an ideal time for outdoor exploration before the chill of autumn sets in. So, whether you're enjoying the crisp air or the last remnants of warmth, this month provides a perfect snapshot of Kelso’s variability.

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

The chart illustrates September temperature patterns in Kelso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec383941445056595854484339
Data source: Temperature data for Kelso 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 Kelso

September in Kelso, United Kingdom, marks a shift as summer fades, bringing a moderate precipitation total of 64 mm (2.5 in) over approximately 14 rainy days. This month's rainfall is lighter than the peak seen in August, which recorded 103 mm (4.0 in), yet it is still substantial compared to the drier months of April and May. Interestingly, September's totals suggest a balance in seasonal transition, fitting comfortably between late summer's heavier rains and the upcoming autumn. As the year progresses, rainfall begins to intensify again in October, echoing a familiar pattern of increased precipitation that Kelso often experiences as it moves into the wetter months. With September’s mixture of lingering warmth and fresh showers, it serves as a graceful pivot to the changing seasons.

September Precipitation Trends in Kelso

The chart displays monthly precipitation patterns in Kelso, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5288803663869010364946871
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kelso

In September, Kelso experiences a rise in humidity, with levels at 88%, quite similar to the previous winter months. This slight increase from August's 82% signals a transition as the region shifts from the drier last days of summer towards the wetter autumn. Interestingly, this pattern reflects the general trend observed throughout the year, where humidity remains high, peaking at 92% in November. While October also boasts a significant level at 90%, September's humidity serves as a reminder of the approaching autumnal weather, contributing to the lush greenery for which the area is known. As the seasons change, Kelso's humidity continues to envelop its landscapes, creating a unique atmosphere that characterizes the region.

September Average Humidity in Kelso

This chart illustrates the average monthly humidity levels in Kelso, 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 Kelso

As September rolls in Kelso, the UV Index remains at a moderate level of 5, mirroring the trends set earlier in the year. This marks a gradual decline from the intense summer months of June and July, where the index peaked at 8, indicating a very high risk of harm from unprotected exposure. As the days grow shorter and the sun’s intensity lessens, residents can expect a burn time of 30 minutes before needing to seek shade or apply sunscreen. Compared to the previous month's high risk, September presents a more manageable opportunity for outdoor activities while still reminding us to be mindful of UV exposure. For more details on UV Index patterns throughout the year, check out Kelso UV Index.

Maximum UV Index Levels in Kelso for September

The chart shows the monthly maximum UV Index (UVI) for Kelso 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.
JanFebMarAprMayJunJulAugSepOctNovDec123568865311
Data source: Kelso 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 Kelso

September in Kelso, United Kingdom, shines with a remarkable 305 hours of sunshine, making it a delightful transition from the vibrant summer months. As the days begin to shorten, this month retains a significant amount of light compared to the cooler autumnal months that follow. After basking in the peak of summer with 409 hours of sunshine in July, the gradual decline in sunny hours throughout the fall is evident. Notably, September's sunshine is a comfortable bridge between the lingering warmth of summer and the approaching chill of October, which sees a drop to 231 hours. This trend emphasizes how the vivid hues of early autumn can still be embraced under a bright sky, providing Kelso with an enchanting glow before the winter sets in.

Monthly Sunshine Duration in Kelso: September Highlighted

The September sunshine duration represents the total number of hours Kelso 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.
JanFebMarAprMayJunJulAugSepOctNovDec90h151h220h339h402h383h409h360h305h231h130h93h
Data source: Kelso September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kelso During September

When considering the likelihood of sunny weather in September in Kelso, United Kingdom, it's notable that the chance of sunshine hovers around 21%, which aligns closely with the cooler summer months of July and August, both of which also feature similar percentages. This trend indicates that as the seasons transition from the warmth of summer into autumn, the opportunities for abundant sunshine diminish. In contrast, the spring month of April stands out with a significantly higher 48% likelihood of sunshine, highlighting that while September maintains a hopeful glimpse of sun, it’s still not the most favorable month for sunny weather in the region.

Percentage of Sunny Days in September in Kelso

The chart illustrates the percentage of sunny days in Kelso 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 Kelso experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec25%23%21%48%25%21%29%20%21%18%27%16%
Data source: Kelso September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kelso in September

As summer gives way to autumn in Kelso, United Kingdom, September brings a delightful transition, with daylight lasting approximately 12 hours. This marks a gradual decline from the high of 17 hours in June, as the longer days of summer start to recede. The shift is quite noticeable, as days shorten further into the autumn months, dropping to 10 hours in October and continuing to lessen through the winter. This seasonal ebb and flow not only highlights the waning sunlit hours but also signals the approach of cozy evenings and the rich tapestry of colors that fall showcases in the Scottish landscape. As daylight dances between the seasons, September stands out as a bridge—a perfect time to experience the lingering warmth while the evenings gently invite a sense of calm.

Average Daylight Hours in Kelso for September

The chart illustrates the variation in daylight duration in Kelso throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 44m9h 37m11h 53m14h 12m16h 16m17h 23m16h 47m14h 54m12h 40m10h 22m8h 16m7h 7m
Data source: Kelso daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kelso

In September, Kelso experiences a gentle dance of winds, with an average speed of 3.3 m/s (7 mph), slightly stronger than the summer months. This transitional period sees a modest increase in wind activity compared to the calmer July and August, which recorded lows of 2.2 m/s (5 mph) and 2.9 m/s (7 mph), respectively. As autumn edges closer, September's breezes hint at the more invigorating gusts to come, yet remain pleasantly moderate, creating an inviting atmosphere for outdoor enthusiasts. As the year progresses, Kelso's winds typically pick up, reaching their peak in the later months, but September stands out for its balanced blend of mildness and movement, a perfect prelude to the autumnal shifts ahead.

Average September Wind Speed in Kelso

The chart displays monthly wind speed patterns in Kelso, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.55.14.63.13.13.62.22.93.3 m/s4.84.73.8
Data source: Kelso September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kelso Compares to Other Months

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

In September, the weather in Kelso displays a wider range of temperatures, with a minimum of 1°C (34°F) and a maximum of 27°C (81°F), offering a pleasantly warm average of 12°C (54°F). This month sees 64 mm (2.5 in) of precipitation over 14 days and boasts a high humidity level of 88%. In contrast, January is significantly colder, featuring a minimum temperature of -8°C (18°F) and a maximum of 13°C (55°F), with an average temperature around 3°C (38°F). Although it experiences slightly less precipitation at 52 mm (2.0 in) over 9 days, January's humidity remains high at 90%. For more detailed information, check out Kelso weather in January.

In September, temperatures range from a chilly 1°C (34°F) at night to a pleasant high of 27°C (81°F) during the day, with an average of 12°C (54°F). The month experiences a moderate amount of precipitation, totaling 64 mm (2.5 in) over about 14 days, while maintaining high humidity at 88%. In contrast, February is significantly colder, with temperatures dipping down to -11°C (12°F) at night and only reaching a daytime maximum of 16°C (61°F), averaging around 4°C (39°F). This month sees a bit more rain, with 88 mm (3.5 in) of precipitation spread across roughly 15 days, yet it still holds onto that high humidity level of 88%. For more detailed information about February weather, you can visit Kelso weather in February.

September and March showcase distinct weather characteristics, reflective of their positions in the transition between summer and winter. In September, temperatures range from a chilly 1°C (34°F) at night to a warm 27°C (81°F) during the day, with an average of 12°C (54°F). The month sees about 64 mm (2.5 in) of rain over approximately 14 days and high humidity at 88%. In contrast, March experiences cooler temperatures, with a minimum of -6°C (21°F) and a maximum of 18°C (64°F), averaging 5°C (42°F). Precipitation in March is higher at 80 mm (3.1 in) over around 15 days, coupled with a slightly lower humidity of 86%. For more detailed information, you can check Kelso weather in March.

In comparing the weather of September and April, September generally presents a more moderate climate with average temperatures reaching around 12°C (54°F), peaking at a pleasant maximum of 27°C (81°F). It experiences more rainfall too, with precipitation of 64 mm (2.5 in) spread over 14 days, contributing to a higher humidity level of 88%. In contrast, April is cooler, with average temperatures of only 7°C (45°F) and maximums reaching 23°C (73°F). The month sees less precipitation at 36 mm (1.4 in) over 8 days, alongside slightly lower humidity at 85%. For a more detailed look at April weather, you can visit Kelso weather in April.

In comparing the weather of September and May, we see that September typically offers milder temperatures, with an average of 12°C (54°F) and a maximum of 27°C (81°F), compared to May's average of 10°C (51°F) and maximum of 26°C (79°F). Both months experience similar precipitation levels, around 64 mm (2.5 in) across approximately 14 days; however, September tends to feel more humid at 88%, slightly above May's 80%. For a more detailed look at May weather specifically, you can visit Kelso weather in May.

In comparing the weather between September and June, both months experience similar maximum temperatures, reaching up to 27°C (81°F). However, September typically starts with cooler mornings, featuring a minimum temperature of 1°C (34°F) compared to June's minimum of 3°C (38°F). Average temperatures are also slightly higher in June at 13°C (56°F) versus 12°C (54°F) in September. Additionally, September sees more precipitation with 64 mm (2.5 in) over 14 days, while June presents a wetter landscape with 86 mm (3.4 in) of rainfall over 13 days. Humidity levels are slightly higher in September at 88%, compared to 83% in June. For more specifics about the climate in June, you can visit Kelso weather in June.

In comparing the weather of September to that of July, we see notable differences in temperature and precipitation patterns. September tends to have a wider temperature range, with minimums dropping to 1°C (34°F) compared to July's minimum of 5°C (41°F), though the average maximum temperature is only slightly lower in September at 27°C (81°F) versus July’s 29°C (84°F). Additionally, September experiences a bit more rain with 64 mm (2.5 inches) of precipitation over 14 days, while July records higher precipitation levels at 90 mm (3.5 inches) over 16 days. Humidity is slightly higher in September at 88%, compared to July's 82%, contributing to a more humid feel as summer transitions into autumn. For more specific details on July weather, you can visit Kelso weather in July.

In comparing the weather between August and September, we observe some notable differences. September experiences cooler temperatures, with a minimum of 1°C (34°F) compared to August's 4°C (40°F), although both months share the same maximum temperature of 27°C (81°F). The average temperature in September is also lower at 12°C (54°F) versus 14°C (58°F) in August. Additionally, September sees a decrease in precipitation, totaling 64 mm (2.5 in) over 14 days, compared to August's 103 mm (4.0 in) over 15 days. However, September has slightly higher humidity at 88% compared to August's 82%. For more detailed information on August weather, visit Kelso weather in August.

September features a broader temperature range, with minimums around 1°C (34°F) and maximums reaching up to 27°C (81°F), making it a transition month from warmer summer days to cooler autumn evenings. The average temperature sits at 12°C (54°F), accompanied by relatively high humidity at 88% and a total precipitation of 64 mm (2.5 in) over 14 days. In contrast, October brings a noticeable drop in temperatures, with minimums dipping to -2°C (28°F) and an average of 9°C (49°F). The maximum temperature falls to 20°C (67°F), while rainfall increases slightly to 94 mm (3.7 in), spread over 15 days, and humidity remains high at 90%. For more details on October weather, check out Kelso weather in October.

In September, the weather tends to be milder, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 27°C (81°F) and an average of 12°C (54°F). The month sees 64 mm (2.5 in) of precipitation over 14 days and enjoys relatively high humidity at 88%. In contrast, November brings cooler temperatures, with a minimum of -6°C (22°F) and an average of 6°C (43°F), reaching a maximum of only 14°C (57°F). Precipitation slightly increases to 68 mm (2.7 in) over 15 days, and the humidity rises to 92%. For a detailed look at the specifics of November weather, you can visit Kelso weather in November.

September weather in Kelso is characterized by a milder temperature range, with minimums around 1°C (34°F) and a comfortable average of 12°C (54°F), peaking at a warm 27°C (81°F). While the humidity remains relatively high at 88%, the total precipitation is slightly lower at 64 mm (2.5 in) over approximately 14 days. In contrast, December brings much colder temperatures, with lows reaching -8°C (18°F) and an average of just 4°C (39°F), while the maximum temperature is capped at 12°C (54°F). The total precipitation increases slightly to 71 mm (2.8 in), maintaining the same frequency of rainy days at 14, and with humidity rising marginally to 89%. For more details about December weather in Kelso, visit Kelso weather in December.

Compare Kelso's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kelso

September in Kelso marks a transition from the warmth of summer to the cooler embrace of autumn. With an average temperature that shifts from previous months, the contrast between daytime highs and nighttime lows becomes more pronounced. While rain graces the region on about half the days this month, the overall humidity remains high, adding a touch of briskness to the air. This blend of mild temperatures and increased precipitation sets September apart, making it a month of change in Kelso's climate. For a deeper dive into the weather patterns throughout the year, visit Kelso Climate.