September Weather in Ipswich, United Kingdom

Last updated: March 17, 2025

September in Ipswich, United Kingdom, unveils a blend of refreshing warmth and autumnal charm. With a maximum temperature reaching 23°C (74°F), the month enjoys a pleasant average of 16°C (61°F), complemented by cooler minimums of 7°C (45°F). Amidst the transitional weather, Ipswich experiences approximately 57 mm (2.3 in) of rainfall over about 10 days, making for a humid atmosphere at 80%. This balance of warmth and rainfall offers a unique opportunity to immerse oneself in the vibrant colors and activities of early fall, as the town transforms into a picturesque seasonal landscape.

September Temperature in Ipswich

In September, Ipswich experiences a delightful transition from the warmth of summer to the crispness of autumn. With minimum temperatures around 7°C (45°F) and a pleasant average of 16°C (61°F), it’s a month where outdoor activities thrive under comfortably mild conditions. Daytime highs reaching up to 23°C (74°F) still hold remnants of summer's embrace, inviting residents to enjoy parks and strolls along the picturesque streets. As the month progresses, the cooling trend signals the incoming fall, making September a beautiful time to savor the gradual shift in the air and landscape.

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

The chart illustrates September temperature patterns in Ipswich, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414345485461646460554844
Data source: Temperature data for Ipswich 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 Ipswich

September in Ipswich brings an average precipitation of 57 mm (2.3 in), making it one of the wetter months of the year. With around 10 days of rainfall, this month reflects a slight increase from the drier summer months, yet it’s notably less than the deluges expected in October and December. Following the trend of increasing precipitation through late summer into autumn, September's rainfall prepares the landscape for the lushness of fall, striking a balance that is characteristic of this transitional season. As temperatures gradually cool, the steady rain can rejuvenate greenery, hinting at the vibrant foliage that is just around the corner.

September Precipitation Trends in Ipswich

The chart displays monthly precipitation patterns in Ipswich, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5964562557646675579255101
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ipswich

In September, Ipswich experiences a notable shift in humidity, with levels averaging around 80%. This marks a slight increase from the drier summer months, where humidity dipped to an annual low of 73% in August. As the year transitions into autumn, the air becomes moister, foreshadowing the increased humidity that typically characterizes the later months. Notably, humidity begins to climb again in October and November, reaching a peak of 92% by winter’s arrival. This trend highlights Ipswich's humid climate, transitioning from the relatively dry warmth of summer to the damp chill of autumn and winter, creating a unique atmospheric rhythm throughout the year.

September Average Humidity in Ipswich

This chart illustrates the average monthly humidity levels in Ipswich, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ipswich

As summer fades into autumn, the UV Index in Ipswich, United Kingdom, shifts noticeably. In September, the index settles at a moderate 5, allowing for a 30-minute burn time under the sun. This reduction marks a departure from the high levels experienced in the peak summer months of June and July, which boasted a very high UV Index of 8. As temperatures begin to cool, outdoor enthusiasts should still take care, as the UV rays remain potent enough to cause harm. Compared to the winter months ahead, which generally see low exposure levels, September serves as a reminder to stay vigilant about sun protection, even as the days grow shorter. For more information, visit Ipswich UV Index.

Maximum UV Index Levels in Ipswich for September

The chart shows the monthly maximum UV Index (UVI) for Ipswich 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Ipswich 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 Ipswich

As September unfolds in Ipswich, the lingering warmth of summer still brightens the days, with 314 hours of sunshine gracing the month. This is a notable decline from the peak of July, which boasts 416 hours, yet it still offers a comfortable cushion of sunlight as autumn begins to take hold. The gradual decrease in daylight hours from the sun-drenched days of May and June, which see over 400 hours each, reflects the shift towards the cooler months. By October, the sunshine dips further to 244 hours, indicating a transitional period where the vibrant hues of autumn set against the waning sunshine create a picturesque backdrop. Overall, September serves as a delightful bridge, savoring the last tastes of summer before the shorter days arrive.

Monthly Sunshine Duration in Ipswich: September Highlighted

The September sunshine duration represents the total number of hours Ipswich 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.
JanFebMarAprMayJunJulAugSepOctNovDec94h152h229h344h413h406h416h394h314h244h158h110h
Data source: Ipswich September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ipswich During September

In Ipswich, United Kingdom, September brings a reasonable 33% chance of sunny weather, aligning closely with the summer months and maintaining a steady streak of relatively favorable conditions as autumn approaches. This percentage mirrors that of May and August, indicating that while the warmer months tend to offer a bit more sunshine, early autumn still holds its own. The transition from the peak summer sunshine in July and August shows a slight dip in sunny days, yet September retains a decent opportunity for clear skies. As the month progresses toward October, the likelihood of sun begins to decline, making the sunny days of September a cherished treasure before the chill sets in.

Percentage of Sunny Days in September in Ipswich

The chart illustrates the percentage of sunny days in Ipswich 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 Ipswich experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%24%33%47%35%32%39%34%33%25%31%18%
Data source: Ipswich September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ipswich in September

As summer transitions into autumn, September in Ipswich witnesses a gentle decline in daylight, offering approximately 12 hours of sunlight. This reduction follows the peak of 16 hours experienced in June and July, as the days gradually shorten from the vibrant warmth of summer. While August still enjoyed a generous 14 hours, September signals a shift, where daylight begins its descent towards the shorter days of October, which offer just 10 hours. The gradual ebb of daylight during this month, coupled with the cooler temperatures, sets the stage for the cozy embrace of autumn, inviting residents to savor the shifting hues of nature as the sunlight becomes a more precious commodity.

Average Daylight Hours in Ipswich for September

The chart illustrates the variation in daylight duration in Ipswich throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 20m9h 56m11h 54m13h 55m15h 41m16h 37m16h 7m14h 32m12h 35m10h 35m8h 47m7h 49m
Data source: Ipswich daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ipswich

As September rolls into Ipswich, the wind begins to gently whisper, with an average speed of 4.5 m/s (10 mph). This marks a noticeable dip from the summer's breezier months, where winds hovered around 5.2 m/s in August. While the winds of September are among the calmest of the year, they still carry a refreshing crispness, hinting at the changing seasons ahead. Historically, September’s winds are less vigorous compared to the blustery October that follows, where speeds pick up again to 6.1 m/s (14 mph). This transition invites a blend of serene strolls around the scenic locales of Ipswich and a gradual shift to the hearty winds of autumn, showcasing nature's ebb and flow.

Average September Wind Speed in Ipswich

The chart displays monthly wind speed patterns in Ipswich, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.96.25.54.75.34.14.75.24.5 m/s6.15.35.8
Data source: Ipswich September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ipswich Compares to Other Months

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

September and January present contrasting weather conditions. In September, temperatures range from a mild 7°C (45°F) at night to a warm 23°C (74°F) during the day, with an average of 16°C (61°F). The month sees about 57 mm (2.3 in) of precipitation over approximately 10 days, coupled with a humidity level of 80%. In stark contrast, January experiences chillier conditions, with minimum temperatures dropping to -1°C (30°F) and daytime highs reaching only 13°C (55°F), averaging just 5°C (42°F). Precipitation remains similar at 59 mm (2.3 in) but occurs over 11 days, and humidity is higher at 91%. For more detailed insights on January weather, visit Ipswich weather in January.

September and February showcase stark contrasts in weather patterns. In September, temperatures are milder, ranging from a minimum of 7°C (45°F) to a maximum of 23°C (74°F), with an average of 16°C (61°F). The month experiences about 57 mm (2.3 in) of precipitation over approximately 10 days, along with a humidity level of 80%. In contrast, February brings colder conditions, with temperatures dipping to a minimum of -3°C (28°F) and peaking at 13°C (56°F), resulting in an average temperature of only 6°C (43°F). It also has slightly higher precipitation at 64 mm (2.5 in), distributed over about 12 days and a higher humidity of 89%. For more details on February weather, you can check Ipswich weather in February.

In comparing the weather in September and March, it's clear that the two months present quite different conditions. September experiences milder temperatures, with a minimum of 7°C (45°F) and an average high of 23°C (74°F), while March is considerably colder, featuring a minimum of -3°C (26°F) and a maximum of 16°C (61°F). Both months have similar precipitation levels, with September receiving 57 mm (2.3 in) over 10 days and March slightly less at 56 mm (2.2 in) across 13 days. Humidity levels are also higher in March at 86%, compared to September's 80%. For more specific insights into March weather, you can visit Ipswich weather in March.

September and April present distinct weather patterns, with September generally being milder and wetter. In September, temperatures range from a minimum of 7°C (45°F) to a maximum of 23°C (74°F), averaging around 16°C (61°F), while April features cooler conditions with temperatures between 0°C (33°F) and 20°C (69°F), averaging only 9°C (48°F). Precipitation is more frequent in September, with 57 mm (2.3 in) falling over 10 days compared to April's lighter rainfall of 25 mm (1.0 in) over 7 days. Additionally, while both months hover around high humidity levels, September's humidity is slightly lower at 80% compared to April's 85%. For a more detailed look at the April weather, you can visit Ipswich weather in April.

September and May exhibit subtle differences in weather patterns. In September, the average temperature reaches a comfortable 16°C (61°F), peaking at 23°C (74°F), while May has a slightly cooler average of 12°C (54°F) with a maximum of 21°C (71°F). Both months experience similar precipitation levels, with September seeing 57 mm (2.3 in) over approximately 10 days and May recording 57 mm (2.2 in) across 11 days. Humidity levels are also comparable, with September at 80% and May slightly higher at 82%. For more detailed information, check out Ipswich weather in May.

In comparing the weather between September and June, both months exhibit similar average temperatures, hovering around 16°C (61°F). However, September tends to be slightly milder, with a maximum temperature of 23°C (74°F), compared to June's peak of 24°C (75°F). Precipitation levels are slightly higher in June, with 64 mm (2.5 in) falling over 9 days, compared to September's 57 mm (2.3 in) across 10 days. Humidity is also quite comparable, with September at 80% and June at 81%. For more detailed insights, you can view Ipswich weather in June.

In comparing the weather between September and July, it's evident that July tends to be warmer and slightly more humid. July sees minimum temperatures around 11°C (52°F) with an average of 18°C (64°F) and maximums reaching up to 28°C (83°F). In contrast, September has cooler minimums of 7°C (45°F), an average of 16°C (61°F), and maximums of 23°C (74°F). While both months experience similar amounts of rainfall—66 mm (2.6 in) in July and 57 mm (2.3 in) in September—rain falls on more days in July, with 13 days of precipitation compared to 10 in September. Humidity levels are also slightly higher in September at 80%, compared to July's 76%. For a closer look at July weather, you can check Ipswich weather in July.

In comparing the weather patterns of August and September, September tends to be cooler with a minimum temperature of 7°C (45°F) and an average of 16°C (61°F), while August starts with higher temperatures, ranging from a minimum of 10°C (51°F) to an average of 18°C (65°F). Though September experiences less precipitation overall, totaling 57 mm (2.3 in) over 10 days, it still remains relatively humid at 80%. In contrast, August sees slightly more rainfall at 75 mm (2.9 in) across 12 days, accompanied by a lower humidity level of 73%. For further details on August weather, you can check Ipswich weather in August.

In September, temperatures range from a minimum of 7°C (45°F) to a maximum of 23°C (74°F), with an average of 16°C (61°F), while the month experiences about 57 mm (2.3 in) of precipitation over 10 days. Humidity levels are moderately high at 80%. In contrast, October sees a slight dip in temperatures, with minimums dropping to 4°C (40°F) and average temperatures at 13°C (55°F), peaking at 21°C (70°F). This month also brings increased rainfall, with 92 mm (3.6 in) falling over 14 days and humidity rising to 89%. For more detailed information, you can visit Ipswich weather in October.

In September, the weather is generally mild, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 23°C (74°F) and an average of 16°C (61°F). The month experiences about 57 mm (2.3 in) of precipitation over approximately 10 days, coupled with a moderate humidity level of 80%. In contrast, November brings cooler temperatures, with a minimum of 2°C (35°F), an average of 9°C (48°F), and a maximum of 16°C (62°F). Precipitation remains similar, at 55 mm (2.2 in) over 11 days, but humidity rises to 92%, contributing to a much chillier and damp atmosphere. For more details about November's weather, you can check out Ipswich weather in November.

September and December exhibit significantly different weather patterns. In September, temperatures range from a minimum of 7°C (45°F) to a maximum of 23°C (74°F), with an average temperature of 16°C (61°F). The month receives about 57 mm (2.3 in) of precipitation over approximately 10 days, with humidity at a comfortable 80%. In contrast, December sees a drop in temperatures, with a minimum of 0°C (32°F) and a maximum of 13°C (56°F), leading to an average of just 7°C (44°F). Additionally, it experiences more rainfall, with 101 mm (4.0 in) spread over around 16 days, and humidity rises to 92%. For those interested in more details, check Ipswich weather in December.

Compare Ipswich's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ipswich

As summer transitions to autumn, September in Ipswich features a delightful mix of mild temperatures and increased humidity, making it distinct from the typically warmer months of July and August. With average highs around 16°C, this month sees a comforting coolness, complemented by an average humidity of 80%. Rainfall is more common, with approximately ten days of precipitation adding to the crisp atmosphere. The gentle coolness and soft rain of September foster a refreshing environment, inviting both locals and visitors to enjoy the beautiful transformation of the season. For more detailed insights on Ipswich's weather patterns, visit Ipswich Climate.