September Weather in Milford Haven, United Kingdom

Last updated: March 17, 2025

In Milford Haven, United Kingdom, September ushers in a blend of mild temperatures and considerable rainfall. The maximum temperature often reaches a pleasant 25°C (77°F), while the average hovers around a comfortable 15°C (59°F), dipping to a cool minimum of 7°C (45°F) at night. This transition into autumn brings an average precipitation amount of 97 mm (3.8 in), spread over 14 days, contributing to a humidity level of 85%. Visitors can expect a mix of sunny intervals interspersed with rain, making it essential to embrace both the warmth and occasional showers of this picturesque coastal town.

September Temperature in Milford Haven

As summer gives way to autumn, Milford Haven experiences a delightful transition in September, with temperatures reflecting the shift. The month opens with lows around 7°C (45°F) and peaks at a comfortable 25°C (77°F), showcasing a pleasant average of 15°C (59°F). This time of year marks a gradual decline from the warmth of August, yet still offers ample sunshine and mild conditions. The significant drop in minimum temperatures from the balmy July and August nights hints at the approaching cooler months, while the maximums remain enticingly warm, inviting outdoor activities and scenic strolls by the picturesque harbor. Overall, September serves as a perfect bridge between two seasons, embodying a charming blend of summer warmth and autumn's fresh embrace.

September Weather in Milford Haven: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Milford Haven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454546495358616159555048
Data source: Temperature data for Milford Haven 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 Milford Haven

In September, Milford Haven experiences a notable shift in precipitation, with an average of 97 mm (3.8 in) over the month, falling on approximately 14 days. This marks a transition from the drier summer months into the wetter autumn season, as the rainfall increases from August's 101 mm. The trend suggests that with each passing month, the precipitation steadily rises, peaking in November and December with 131 mm and 150 mm, respectively. Thus, September serves as a pivotal bridge, gradually ushering in the more significant rainfall totals characteristic of the later autumn months. This subtle increase in rainfall not only enriches the environment but also sets the stage for the more dramatic weather patterns that typify the UK's coastal regions.

September Precipitation Trends in Milford Haven

The chart displays monthly precipitation patterns in Milford Haven, 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.
JanFebMarAprMayJunJulAugSepOctNovDec80102935061826710197130131150
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Milford Haven

In September, Milford Haven experiences a slight dip in humidity, averaging around 85%, which aligns closely with the previous month of August. This consistency reflects the region's character as summer transitions into autumn, maintaining a humid atmosphere while providing a slight reprieve from the peak summer levels. Throughout the year, humidity tends to gradually rise from 81% in January to a peak of 87% in July before stabilizing during the latter part of the year. With October following closely at 85%, the air remains notably moist, indicative of the maritime influence that defines this coastal town's climate.

September Average Humidity in Milford Haven

This chart illustrates the average monthly humidity levels in Milford Haven, 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.
JanFebMarAprMayJunJulAugSepOctNovDec81%84%83%84%85%86%87%86%85%85%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Milford Haven

As September arrives in Milford Haven, the UV Index reflects a high exposure category with a reading of 6, suggesting that sun protection is still essential. This marks a gradual decline from the very high levels seen during the summer months of June and July, when the UV Index peaked at 8. The burn time during September remains consistent at 25 minutes, allowing for outdoor enjoyment while still emphasizing the importance of safeguarding your skin. Overall, the month shows a transition from the intense sun of summer to slightly more manageable conditions, but vigilance against UV radiation should continue. For more detailed information, check out the Milford Haven UV Index.

Maximum UV Index Levels in Milford Haven for September

The chart shows the monthly maximum UV Index (UVI) for Milford Haven 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.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Milford Haven 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 Milford Haven

September in Milford Haven brings a delightful swing in sunlight, basking the coastal town in a generous 320 hours of sunshine. This marks a noticeable decline from the sun-drenched summer months of July and August, where beachgoers enjoyed over 400 hours under the sun. Despite the decrease, September's 320 hours still offers a vibrant glow as autumn approaches, signaling the shifting seasons and inviting residents and visitors alike to relish the moderate temperatures and golden foliage. As we move into October, the sun retreats further, illustrating a seasonal rhythm where the warmth of summer fades, but the charm of early fall remains compelling.

Monthly Sunshine Duration in Milford Haven: September Highlighted

The September sunshine duration represents the total number of hours Milford Haven 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.
JanFebMarAprMayJunJulAugSepOctNovDec101h161h233h346h416h414h428h387h320h253h143h117h
Data source: Milford Haven September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Milford Haven During September

In Milford Haven, September maintains a consistent pattern of mild sunshine, with a 28% chance of sun. This percentage mirrors the winter months in January and February, where similarly low probabilities prevail. As the summer draws to a close, the likelihood of sunny weather does not significantly improve; it remains notably lower than the spring peak in April, which boasts a remarkable 53% chance of sun. Compared to the sunnier months of June and July, September’s sunshine prospects feel somewhat lackluster, as the vibrant hues of summer gradually fade into the crispness of autumn. As such, while September offers mild weather, those hoping for plentiful sunshine may need to adjust their expectations accordingly.

Percentage of Sunny Days in September in Milford Haven

The chart illustrates the percentage of sunny days in Milford Haven 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 Milford Haven experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%28%30%53%37%29%41%36%28%21%23%22%
Data source: Milford Haven September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Milford Haven in September

As September unfolds in Milford Haven, the days begin to shorten, presenting a striking contrast to the long, sun-drenched hours of summer. With 12 hours of daylight, this month marks a gentle transition from the vibrant 16-hour days of June and July, gradually retreating towards October's more subdued 10 hours. The daylight duration in September encapsulates the ebbing warmth of summer, inviting a reflective mood as nature prepares for the cozy embrace of autumn. This trend of diminishing daylight is mirrored in the seasonal rhythm, where each month weaves together a tapestry of changing light, guiding the community through the slower pace of the cooler months ahead.

Average Daylight Hours in Milford Haven for September

The chart illustrates the variation in daylight duration in Milford Haven throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 22m9h 57m11h 55m13h 55m15h 40m16h 34m16h 5m14h 31m12h 35m10h 35m8h 48m7h 51m
Data source: Milford Haven daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Milford Haven

In September, the wind in Milford Haven offers a gentle transition into autumn, with an average speed of 4.4 m/s (10 mph). This mild breeze reflects a notable drop from the summer months, where speeds hovered around 5.1 m/s in August. As the year progresses, we see a gradual increase in wind intensity, with October picking up to 6.7 m/s (15 mph) and November maintaining a robust 6.1 m/s (14 mph), illustrating a distinctive trend of increasing winds as the seasons change. September serves as a calm prelude to the more vigorous gusts that characterize the late autumn months, allowing for a final stretch of comfortable winds before the colder, brisk gales of winter and early spring begin to dominate.

Average September Wind Speed in Milford Haven

The chart displays monthly wind speed patterns in Milford Haven, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.47.46.34.55.64.54.05.14.4 m/s6.76.17.2
Data source: Milford Haven September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Milford Haven Compares to Other Months

The weather in Milford Haven 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 Milford Haven and find detailed weather information for every month.

In comparing the weather between September and January, September generally offers milder temperatures, with a minimum of 7°C (45°F), an average of 15°C (59°F), and a maximum reaching 25°C (77°F). The month is relatively wet, experiencing 97 mm (3.8 in) of precipitation over about 14 days, coupled with high humidity at 85%. Conversely, January presents cooler conditions, characterized by a minimum of 1°C (33°F), an average of 7°C (46°F), and a maximum of 14°C (57°F). Although precipitation is slightly lower at 80 mm (3.2 in) across 13 days, humidity remains fairly high at 81%. For a more detailed understanding of January conditions, you can refer to Milford Haven weather in January.

September and February present distinct weather contrasts. In September, temperatures range from a minimum of 7°C (45°F) to a pleasant average of 15°C (59°F), peaking at 25°C (77°F). The month experiences about 97 mm (3.8 in) of precipitation over approximately 14 days, accompanied by high humidity levels of 85%. In contrast, February sees cooler temperatures with a minimum of -1°C (30°F) and an average of 7°C (46°F), reaching a maximum of 13°C (56°F). Despite February having slightly higher precipitation at 102 mm (4.0 in) across 16 days, humidity remains similar at 84%. For more detailed insights, you can visit Milford Haven weather in February.

When comparing the weather in September and March, there are notable differences in temperature and precipitation. September enjoys milder temperatures with a minimum of 7°C (45°F) and an average of 15°C (59°F), peaking at 25°C (77°F), while March is much cooler, with temperatures ranging from a minimum of -4°C (25°F) up to a maximum of 15°C (59°F). September also sees higher humidity at 85%, compared to March’s 83%. Precipitation is similar for both months, with September receiving 97 mm (3.8 in) over 14 days and March experiencing 93 mm (3.7 in) over 16 days. For a detailed look at March weather, you can visit Milford Haven weather in March.

In September, the weather tends to be warmer and more variable than in April, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), and an average of 15°C (59°F). In contrast, April is cooler, with temperatures peaking at 18°C (64°F) and an average of just 9°C (49°F). Additionally, September sees more precipitation, recording 97 mm (3.8 in) over 14 days, compared to April's 50 mm (2.0 in) over 9 days. Humidity levels are slightly higher in September at 85%, while April maintains a relatively similar humidity at 84%. For more detailed information, you can check Milford Haven weather in April.

In comparing the weather of September and May, September boasts a generally warmer climate with average temperatures around 15°C (59°F) and a maximum of 25°C (77°F), whereas May features slightly cooler temperatures, averaging 12°C (53°F) with a maximum of 21°C (71°F). Both months experience similar humidity levels at 85%, creating a consistent feeling of dampness. However, September tends to be wetter, receiving 97 mm (3.8 in) of precipitation over 14 days, compared to May's 61 mm (2.4 in) over 9 days. For a more detailed look at May's weather, you can visit Milford Haven weather in May.

In comparing the weather of September and June, September generally experiences slightly warmer temperatures, with an average of 15°C (59°F) compared to June's average of 14°C (58°F). The maximum temperature in September reaches 25°C (77°F), making it a bit warmer than June's peak of 24°C (75°F). However, both months have similar minimum temperatures, with September's at 7°C (45°F) and June's at 8°C (47°F).

Precipitation in September is slightly higher at 97 mm (3.8 in) over 14 days, while June sees 82 mm (3.2 in) over 13 days. Humidity levels are also comparable, at 85% for September and 86% for June, indicating a generally damp atmosphere in both months. For more detailed weather information specific to June, you can visit Milford Haven weather in June.

In comparing the weather between September and July, we see some notable differences. July experiences slightly warmer temperatures, with a minimum of 11°C (52°F) and an average of 16°C (61°F), whereas September's temperatures drop, with a minimum of 7°C (45°F) and an average of 15°C (59°F). Both months have a maximum temperature capped at 25°C (77°F), but September is generally cooler overall. Precipitation is more frequent in September, with 97 mm (3.8 in) spread over 14 days, compared to July's 67 mm (2.6 in) on 12 days. Humidity levels are relatively similar, with September at 85% and July slightly higher at 87%. For more detailed insights, you can check Milford Haven weather in July.

September experiences slightly cooler temperatures compared to August, with minimums of 7°C (45°F) and an average of 15°C (59°F) versus August's minimum of 10°C (51°F) and average of 16°C (61°F). While both months have comparable maximum temperatures—25°C (77°F) in September and 23°C (74°F) in August—September also sees a bit more rain, with 97 mm (3.8 in) of precipitation over 14 days compared to August's 101 mm (4.0 in) over 16 days. Humidity remains fairly high in both months, with September at 85% and August at 86%. For a detailed breakdown of August's weather, visit Milford Haven weather in August.

September generally experiences milder temperatures with a minimum of 7°C (45°F) and a maximum of 25°C (77°F), yielding an average of 15°C (59°F). The month sees around 97 mm (3.8 in) of precipitation across 14 days. In contrast, October brings cooler conditions, with temperatures dropping to a minimum of 2°C (36°F) and maxing out at 19°C (67°F), resulting in an average temperature of 13°C (55°F). Additionally, October is wetter, with 130 mm (5.1 in) of precipitation spread over 17 days, yet the humidity remains consistent at 85%. For more details about the weather in October, check out Milford Haven weather in October.

In September, temperatures are generally milder, with a minimum of 7°C (45°F) and an average of 15°C (59°F), reaching a maximum of 25°C (77°F). The month experiences a total of 97 mm (3.8 in) of precipitation over 14 days, accompanied by high humidity levels at 85%. In contrast, November sees a noticeable drop in temperature, with a minimum of 3°C (38°F) and an average of 10°C (50°F), peaking at 15°C (60°F). Precipitation in November increases to 131 mm (5.2 in) over 19 days, and while humidity remains relatively high at 82%, it's slightly lower than in September. For more detailed information on November weather, you can view Milford Haven weather in November.

In September, the weather is generally milder with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), averaging around 15°C (59°F). This month experiences significant rainfall, with 97 mm (3.8 in) spread over about 14 days, alongside high humidity levels of 85%. In contrast, December brings cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 13°C (56°F), averaging only 9°C (48°F). Precipitation increases to 150 mm (5.9 in) over approximately 20 days, and humidity is slightly lower at 80%. For a more detailed look at the weather in December, you can check Milford Haven weather in December.

Compare Milford Haven's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Milford Haven

As September rolls in, Milford Haven begins to shed the warmth of summer, ushering in a milder climate marked by the cooling of temperatures and a noticeable increase in precipitation. This month typically experiences a mix of sunny days and showers, leading to an overall more humid atmosphere—a stark contrast to the drier, warmer months that precede it. With an average temperature settling around a comfortable 15°C, residents and visitors can expect to enjoy the beautiful autumn hues while remaining prepared for occasional rain. For a detailed look at the weather patterns throughout the year, visit Milford Haven Climate.