Last updated: March 17, 2025
September in King's Lynn, United Kingdom offers a diverse weather experience, with temperatures reaching a maximum of 27°C (80°F) and dipping to a minimum of 4°C (40°F). The average temperature remains a mild 15°C (59°F), providing a pleasant backdrop for autumn adventures. However, this month also sees 73 mm (2.9 in) of precipitation over 11 days, contributing to a notably high humidity level of 84%. As summer gives way to fall, residents and visitors alike can expect a mix of sunny spells and occasional showers, making it a time for embracing the seasonal transition.
As September rolls into King's Lynn, the early whispers of autumn are felt in the dropping temperatures. With minimums averaging around 4°C (40°F) and maximums reaching a comfortable 27°C (80°F), the month offers a pleasant blend of warmth and cooling breezes, perfect for enjoying the transition from summer. The average temperature sits at a mild 15°C (59°F), indicating a shift from the peak heat of July and August, where temperatures soared closer to 32°C (90°F). As days grow shorter, the sharp contrasts of this month highlight the fading summer warmth while hinting at the crisp air to come, making September a delightful yet transitional time in King's Lynn.
In September, King's Lynn experiences a notable shift in weather, with an average precipitation of 73 mm (2.9 in) over 11 days. This marks a slight decline from the wetter months of August and October, yet still suggests an unmistakable transition into the autumn season. Following the peak summer rainfall, September's precipitation continues to maintain a steady volume, highlighting the region's propensity for variable weather. As autumn settles in, residents can expect the occasional downpour, blending the last remnants of summer with the crispness of fall, setting the stage for a diverse and atmospheric month ahead.
As summer transitions to autumn in King's Lynn, the humidity sees a slight uptick in September, reaching 84%—a moderate level that falls between the drier months of July and August and the wetter periods of late autumn. This subtle increase marks a shift from the warm, drier summer air, underscoring the return of moisture that characterizes the approaching fall season. Observing the trend throughout the year, it's clear that the highest humidity levels typically occur in the winter months, peaking at 89% in both January and November, while the summer months generally enjoy lower humidity. September, therefore, acts as a bridge, hinting at the increased dampness to come as the year draws to a close.
In September, King's Lynn experiences a moderate UV Index of 5, signaling a time when sun exposure should still be approached with a degree of caution. As the summer heat begins to wane, the burn time increases to approximately 30 minutes before skin can start to feel the effects of UV radiation. This trend reflects a slight dip from the high UV ratings seen in July and August, which boasted values of 8 and 7, respectively, where brief exposure was advised. As autumn progresses, the UV Index continues to decline, ultimately reaching lower levels by October. For those planning outdoor activities in King's Lynn, it's essential to stay informed about UV levels and protect skin accordingly; for more detailed information, check the resource on King's Lynn UV Index.
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As summer wanes and autumn begins its gentle embrace, September in King's Lynn witnesses a significant drop in sunshine hours, with 302 hours of brightness gracing the skies. This reflects a shift from the vibrant July and August, which brimmed with 406 and 379 hours, respectively. Despite this decline, September still offers a generous sunlit respite compared to the drearier months that follow, with November and December barely reaching 151 and 108 hours. As the year progresses, the shift from the long, radiant days of summer to shorter, softer light unveils the cozy charm of early autumn in this picturesque UK town.
In King's Lynn, the likelihood of sunny weather in September reflects a balanced transition between summer and autumn. With a 30% chance of sunshine, September offers a notable increase from the gloomier months of January and February, yet it doesn't quite match the higher figures seen in late spring, like April's 45%. This month stands out among the late summer offerings, providing a satisfying blend of milder temperatures and occasional brightness, although it's less reliable compared to the sun-soaked days of April and the preceding summer months. As autumn begins to set in, residents and visitors can still expect some bright spells, making September a delightful time to soak up what sunshine remains.
As summer transitions into autumn, September in King's Lynn, United Kingdom, showcases a gentle decline in daylight hours, providing about 12 hours of light each day. Following the peak of 16 hours experienced in June and July, this month's daylight signals a shift towards shorter days, reminiscent of the gradual decrease that started in August. The trend is clear: after basking in the long, radiant days of summer, residents begin to embrace the softer, shorter daylight of early autumn, setting the stage for the cozy ambiance of October and the approaching winter months.
As summer gives way to autumn in King's Lynn, the wind tends to mellow in September, averaging 4.1 m/s (9 mph). This slight dip in wind speed marks a trend of decreasing breeziness that begins in the warm months, hitting its lowest in September after the more invigorating gusts of spring and early summer. While the winds are generally calm compared to the earlier months of the year, a notable uptick can be expected in October, where speeds rise again to 5.6 m/s (13 mph). This seasonal ebb and flow not only shapes the local atmosphere but also sets the stage for the crisp air that characterizes autumn, enveloping the charming coastal town in a gentle, refreshing breeze.
The weather in King's Lynn 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 King's Lynn and find detailed weather information for every month.
September and January present contrasting weather patterns. In September, temperatures range from a mild 4°C (40°F) at night to a warm 27°C (80°F) during the day, with an average of 15°C (59°F). The month typically sees 73 mm (2.9 in) of precipitation spread over 11 days and a humidity level of 84%. In stark contrast, January features much cooler temperatures, with nighttime lows dropping to -3°C (27°F) and daytime highs peaking at 14°C (58°F), resulting in an average temperature of just 5°C (41°F). Precipitation in January is lower at 50 mm (2.0 in) over 10 days, coupled with a slightly higher humidity level of 89%. For more detailed insights on January conditions, check out King's Lynn weather in January.
In September, temperatures tend to be more moderate, with a minimum of 4°C (40°F), an average of 15°C (59°F), and a maximum reaching 27°C (80°F), making it a pleasant month for outdoor activities. In contrast, February experiences colder weather, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 17°C (62°F), resulting in a chilly climate. While September sees an average precipitation of 73 mm (2.9 in) over 11 days, February has slightly less rainfall at 62 mm (2.4 in) over 12 days but with higher humidity at 87%. For those interested in more details, you can check King's Lynn weather in February.
September and March present contrasting weather experiences. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 27°C (80°F), with an average of 15°C (59°F), offering a warmer feel as summer transitions to autumn. The month sees 73 mm (2.9 in) of precipitation over 11 days, coupled with high humidity at 84%. In contrast, March is significantly cooler, with temperatures fluctuating between a minimum of -5°C (24°F) and a maximum of 19°C (67°F), averaging at 7°C (45°F). Despite having lower precipitation at 58 mm (2.3 in) over 15 days, March's humidity slightly surpasses September at 86%. For more details, check King's Lynn weather in March.
In comparing the weather of September and April, September tends to be warmer overall, with average temperatures reaching 15°C (59°F) and highs of 27°C (80°F), while April is cooler, averaging only 9°C (48°F) and peaking at 24°C (75°F). Despite April having slightly lower precipitation at 33 mm (1.3 in) over about 7 days, September experiences a bit more rainfall at 73 mm (2.9 in) across 11 days. Interestingly, both months experience high humidity, with September at 84% and April slightly higher at 85%. For a more in-depth understanding of April conditions, you can refer to King's Lynn weather in April.
When comparing the weather in September and May, both months exhibit mild temperatures but with subtle differences. September has a slightly higher average temperature of 15°C (59°F) compared to May's average of 12°C (54°F), with maximums reaching 27°C (80°F) in September versus 25°C (77°F) in May. Additionally, September tends to have a bit more precipitation, totaling 73 mm (2.9 in) over 11 days, while May sees slightly less at 66 mm (2.6 in) over 12 days. Humidity levels are quite similar, with September at 84% and May at 83%. For a more detailed look at the weather in May, you can check King's Lynn weather in May.
In comparing the weather of September and June, September features slightly cooler temperatures, with a minimum of 4°C (40°F) and an average of 15°C (59°F), while June starts off a bit warmer, with a minimum of 6°C (43°F) and an average of 16°C (61°F). Both months see maximum temperatures that hover around similar levels, with June peaking at 28°C (82°F) compared to September's 27°C (80°F). Rainfall is comparable, with September experiencing 73 mm (2.9 in) over 11 days and June receiving 78 mm (3.1 in) over 10 days. Humidity levels are also similar, with September at 84% and June slightly lower at 83%. For more detailed insights into June weather, you can visit King's Lynn weather in June.
The weather in September is noticeably cooler compared to July, with minimum temperatures dropping from 10°C (50°F) in July to 4°C (40°F) in September. While the average temperature in July hovers around 18°C (64°F), September sees a more moderate average of 15°C (59°F). Maximum temperatures also decline, peaking at 27°C (80°F) in September compared to a warmer 32°C (90°F) in July. Precipitation is slightly higher in September at 73 mm (2.9 in) over 11 days, whereas July has 66 mm (2.6 in) spread across 12 days. Humidity remains high in both months, with September at 84% and July at 79%. For a detailed look at July's weather, you can refer to King's Lynn weather in July.
In comparing the weather between September and August, September generally experiences cooler temperatures, with minimums dropping to 4°C (40°F) compared to August's minimum of 10°C (50°F). The average temperature in September is also lower at 15°C (59°F), while August averages 18°C (64°F). Additionally, September has a maximum temperature of 27°C (80°F), slightly less than August's high of 30°C (87°F). Both months see significant rainfall, with September receiving 73 mm (2.9 in) over 11 days, while August has 81 mm (3.2 in) over 13 days. Interestingly, September exhibits a higher humidity level at 84%, compared to August's 78%. For more specific information, you can check King's Lynn weather in August.
In September, temperatures typically range from a minimum of 4°C (40°F) to a maximum of 27°C (80°F), with an average of 15°C (59°F). The month sees about 73 mm (2.9 inches) of precipitation over 11 days and boasts a humidity level of 84%. In contrast, October experiences slightly cooler temperatures, with a minimum of 3°C (38°F), an average of 12°C (54°F), and a maximum of 24°C (75°F). Rainfall increases to 88 mm (3.5 inches) over 15 days, while humidity rises to 88%. For more detailed insights, you can refer to King's Lynn weather in October.
September typically experiences milder temperatures, with a minimum of 4°C (40°F) and an average of 15°C (59°F), peaking at 27°C (80°F). This month also sees higher precipitation levels at 73 mm (2.9 in) over approximately 11 days and has a humidity of 84%. In contrast, November's weather is noticeably cooler, featuring a minimum of -1°C (31°F) and an average of 8°C (47°F), with a maximum of only 17°C (63°F). Although November has slightly less precipitation at 55 mm (2.2 in) over the same 11 days, it experiences higher humidity at 89%. For a detailed look at the weather specifics in November, visit King's Lynn weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a pleasant minimum of 4°C (40°F) to a warm maximum of 27°C (80°F), with an average of 15°C (59°F). The month sees moderate precipitation of 73 mm (2.9 in) over about 11 days and humidity levels at 84%. In contrast, December brings chillier conditions, with temperatures dropping to a minimum of -1°C (30°F) and peaking at 14°C (58°F), resulting in an average temperature of 6°C (43°F). Precipitation increases slightly to 83 mm (3.3 in) over 16 days, accompanied by higher humidity at 88%. For more detailed insights, visit King's Lynn weather in December.
As September unfolds in King's Lynn, the weather offers a delightful mix of warmth and crispness that sets it apart from the hotter summer months. With average temperatures hovering around a comfortable 15°C (59°F), the days can still feel quite balmy, occasionally reaching peaks of 27°C (80°F). However, the unwelcome return of rain—spanning across 11 days and amassing about 73 mm (2.9 in) of precipitation—reminds us that autumn is on the horizon. The humidity levels climb to a notable 84%, adding a touch of mugginess, particularly after rainfall. For a deeper understanding of what to expect in this transitional month, explore our detailed insights on King's Lynn Climate.