September Weather in Saint Davids, United Kingdom

Last updated: March 17, 2025

In Saint Davids, United Kingdom, September brings a mild climate characterized by an average temperature of 15°C (59°F), with maximum highs reaching up to 23°C (73°F) and minimum lows dipping to 10°C (50°F). This transitional month is marked by considerable rainfall, totaling 95 mm (3.7 in) over 13 days, contributing to a humidity level that hovers around 85%. Visitors can expect a blend of sunny spells and occasional showers, making it a dynamic time to experience the natural beauty and charm of this picturesque coastal town.

September Temperature in Saint Davids

In September, Saint Davids welcomes the transition from summer to autumn with mild temperatures that invite outdoor exploration. The minimum temperature hovers around 10°C (50°F), offering a comfortable start to the day, while the days warm up to a pleasant maximum of 23°C (73°F). With an average temperature of 15°C (59°F), this month stands out as an ideal time to experience the stunning coastal scenery without the peak summer crowds. As the days grow shorter, the gradual dip in temperature signals the onset of fall, creating a charming atmosphere perfect for enjoying the local sights and natural beauty.

September Weather in Saint Davids: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint Davids, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec474646485256606159555149
Data source: Temperature data for Saint Davids 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 Saint Davids

September in Saint Davids, United Kingdom, showcases a transition from summer’s warmth to autumn’s embrace, with an average precipitation of 95 mm (3.7 in) over 13 rainy days. This marks a slight increase from the previous month, August, which recorded 93 mm (3.7 in). The consistent rainfall during this month indicates the start of a wetter season, as October follows closely with an even higher average of 130 mm (5.1 in) expected over 17 days. The trend reveals a gradual escalation in both precipitation amounts and frequency of rainy days as the year progresses towards winter, setting the stage for an increasingly lush and vibrant landscape in the months to come.

September Precipitation Trends in Saint Davids

The chart displays monthly precipitation patterns in Saint Davids, 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.
JanFebMarAprMayJunJulAugSepOctNovDec819986505073629395130149158
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint Davids

In September, Saint Davids, United Kingdom, experiences a humidity level of 85%, marking a slight decrease from the summer months. This decline follows a peak of 87% in July, gradually tapering off as autumn approaches. The transition from the balmy summer to more temperate conditions is mirrored in the humidity levels, which consistently hover in the mid-80s during late summer and early autumn. As September rolls in, the refreshing air begins to signal the onset of fall, yet the lingering moisture remains a characteristic feature of this coastal region. Overall, the relative humidity remains fairly stable, with only minor fluctuations, offering a comfortable atmosphere as the seasons shift.

September Average Humidity in Saint Davids

This chart illustrates the average monthly humidity levels in Saint Davids, 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 Saint Davids

In September, Saint Davids, United Kingdom, experiences a UV Index of 6, categorizing it as a high exposure level with a burn time of just 25 minutes. As summer transitions into autumn, the UV Index begins to decrease from the very high levels seen in July and June, but remains significant enough to warrant caution. This trend reflects a gradual decline in UV radiation from the peak months of June and July, yet it still highlights the importance of sun safety as early autumn days can be deceptive. As you enjoy the scenic beauty of Saint Davids this September, remember to stay protected under the sun. For more detailed information, visit Saint Davids UV Index.

Maximum UV Index Levels in Saint Davids for September

The chart shows the monthly maximum UV Index (UVI) for Saint Davids 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: Saint Davids 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 Saint Davids

As summer transitions to autumn, September in Saint Davids offers a delightful blend of warmth and golden sunshine, basking in 318 hours of radiant daylight. This month marks a gradual decline from the sun-soaked days of July, which boasts the highest sunshine at 425 hours, while still outshining the dimmer months ahead. With the sun's presence reigning strong in May and June, where sunshine peaks, September's ample light serves as a gentle farewell to summer, creating a picturesque backdrop for outdoor adventures and scenic strolls along the captivating coastline. As the days shorten and the air crispens, this month embodies a harmonious transition, inviting both locals and visitors to savor every sun-kissed moment before the winter months encroach.

Monthly Sunshine Duration in Saint Davids: September Highlighted

The September sunshine duration represents the total number of hours Saint Davids 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.
JanFebMarAprMayJunJulAugSepOctNovDec100h158h227h338h416h413h425h384h318h246h138h111h
Data source: Saint Davids September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Saint Davids During September

In September, Saint Davids, United Kingdom, experiences a 29% chance of sunny weather, which shows a slight dip from the summer months but remains relatively stable compared to the earlier part of the year. This percentage reflects a transition from the warmer season, where July and August peak at 43% and 36% respectively, leading to a more unpredictable weather pattern as autumn approaches. While September may not boast the sunny reliability of the late spring and summer, it still offers moments of brightness amidst the crispening air, making it a charming time to explore this picturesque coastal town. As the month progresses towards October, the likelihood of sunshine continues to decrease, emphasizing the shift towards the cooler, cloudier months ahead.

Percentage of Sunny Days in September in Saint Davids

The chart illustrates the percentage of sunny days in Saint Davids 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 Saint Davids experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%27%28%53%40%31%43%36%29%21%22%25%
Data source: Saint Davids September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Saint Davids in September

In September, daylight in Saint Davids, United Kingdom, begins to wane as the summer season transitions into autumn, offering a total of 12 hours of daylight. This marks a noticeable decrease from the peak of 16 hours experienced in the height of June and July. As the days grow shorter, the gradual decline from August's 14 hours highlights the shift in seasons, suggesting cozy evenings ahead. With October on the horizon, the daylight duration will continue to diminish, echoing nature's rhythm as it prepares for the colder months ahead. The interplay of light and darkness during this time not only sets the stage for beautiful autumn landscapes but also invites a nurturing environment for introspection and warmth.

Average Daylight Hours in Saint Davids for September

The chart illustrates the variation in daylight duration in Saint Davids throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 21m9h 57m11h 55m13h 55m15h 41m16h 36m16h 6m14h 32m12h 35m10h 35m8h 47m7h 50m
Data source: Saint Davids daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Saint Davids

In September, the winds in Saint Davids, United Kingdom, tend to ease as summer wanes, with average wind speeds dropping to 4.9 m/s (11 mph). This gentle breeze signals a transition from the previous months, where gusts were notably stronger; January's winds howl at 7.9 m/s (18 mph), peaking in late autumn with 8.3 m/s (19 mph) in December. The clear pattern reveals a gradual decline in wind strength through the summer months, from July's 4.3 m/s (10 mph) up to September, before returning to more vigorous conditions in autumn. This seasonal fluctuation not only influences the climate but also enriches the local landscape, inviting both residents and visitors to appreciate the softer embrace of autumn winds.

Average September Wind Speed in Saint Davids

The chart displays monthly wind speed patterns in Saint Davids, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.98.87.25.36.25.44.35.84.9 m/s8.07.68.3
Data source: Saint Davids September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Saint Davids Compares to Other Months

The weather in Saint Davids 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 Saint Davids and find detailed weather information for every month.

September typically features milder temperatures compared to January, with average highs reaching 23°C (73°F) and lows around 10°C (50°F). The month experiences a fair amount of rainfall, with about 95 mm (3.7 in) of precipitation spread over 13 days, accompanied by high humidity levels at 85%. In contrast, January is much cooler, with average temperatures ranging from a low of 2°C (36°F) to a high of 14°C (57°F). Although it sees slightly less precipitation at 81 mm (3.2 in) over the same number of days, the humidity remains relatively high at 81%. To learn more about the weather conditions in January, you can visit Saint Davids weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 23°C (73°F), with an average of 15°C (59°F). The month experiences 95 mm (3.7 in) of precipitation over approximately 13 days, while humidity remains high at 85%. In contrast, February sees cooler temperatures, with a minimum of 0°C (33°F) and a maximum of 13°C (55°F) and an average of 8°C (46°F). Despite a slightly higher precipitation of 99 mm (3.9 in) spread over about 17 days, humidity is relatively stable at 84%. For specific details about the weather in February, you can visit Saint Davids weather in February.

September and March present quite contrasting weather patterns. In September, temperatures typically range from a mild 10°C (50°F) at night to a comfortable high of 23°C (73°F) during the day, accompanied by substantial rainfall of 95 mm (3.7 in) over approximately 13 days, along with high humidity levels of 85%. In contrast, March experiences much cooler temperatures, with lows dropping to -3°C (27°F) and daytime highs peaking at 14°C (57°F). Although precipitation is slightly lower at 86 mm (3.4 in), it is distributed over more days, around 16, and the humidity remains relatively high at 83%. For a closer look at the weather specifics in March, you can visit Saint Davids weather in March.

When comparing the weather in September and April, noticeable differences emerge. September typically sees milder temperatures, with a minimum of 10°C (50°F) and an average of 15°C (59°F), peaking at a maximum of 23°C (73°F). In contrast, April is cooler, recording a minimum of 4°C (40°F) and an average of 9°C (49°F), with a maximum of only 17°C (62°F). Additionally, September experiences more precipitation, totaling 95 mm (3.7 in) over 13 days, compared to April’s 50 mm (2.0 in) over 9 days. Humidity remains fairly consistent, with September at 85% and April slightly lower at 84%. For more specific insights, you can check Saint Davids weather in April.

The weather in September is generally warmer than in May, with average temperatures reaching 15°C (59°F) compared to May's 11°C (52°F). The max temperature in September can soar to 23°C (73°F), while May peaks at a milder 19°C (67°F). Additionally, September experiences more precipitation, with 95 mm (3.7 in) over 13 days, whereas May sees a lower total of 50 mm (2.0 in) across just 8 days. Both months share a high humidity level of 85%, making the air feel quite humid. For more details on May weather in this region, you can check Saint Davids weather in May.

In comparing the weather of September and June, both months exhibit mild temperatures and similar patterns of precipitation. In September, the temperatures range from a minimum of 10°C (50°F) to a maximum of 23°C (73°F), with an average of 15°C (59°F). This month sees more rainfall, totaling 95 mm (3.7 in) over 13 days, contributing to a relatively high humidity level of 85%. In contrast, June experiences slightly cooler temperatures, with a minimum of 9°C (48°F) and a maximum of 21°C (70°F), averaging around 14°C (57°F). The precipitation in June is less, totaling 73 mm (2.9 in) over the same number of days, with a humidity level of 86%. For a more detailed look at the weather patterns, you can check Saint Davids weather in June.

When comparing the weather in September to that in July, we see a few distinct differences. September typically has a minimum temperature of 10°C (50°F) and an average of 15°C (59°F), with maximum temperatures reaching up to 23°C (73°F). In contrast, July sees a slightly higher minimum of 12°C (54°F) and a similar average temperature of 15°C (60°F), peaking at around 22°C (72°F). While both months experience significant humidity, September tends to have a higher precipitation level of 95 mm (3.7 in) over 13 days, compared to July’s 62 mm (2.4 in) across 11 days. This makes July slightly drier and generally more stable in terms of weather. For more detailed information, you can refer to Saint Davids weather in July.

In comparing the weather of September and August, it is evident that September marks a shift towards cooler temperatures. While August enjoys slightly warmer conditions with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 21°C (71°F), September features lower averages, with minimums of 10°C (50°F) and maximums reaching only 23°C (73°F). Both months experience similar precipitation levels, with September recording 95 mm (3.7 in) over 13 days, compared to August's 93 mm (3.7 in) over 14 days. Humidity remains relatively high in both months, with September at 85% and August slightly higher at 86%. For a detailed look at August weather in Saint Davids, you can visit Saint Davids weather in August.

September and October show a noticeable transition in weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 23°C (73°F), with an average of 15°C (59°F), creating a mild atmosphere. However, September does experience significant rainfall, totaling 95 mm (3.7 in) over 13 days, with humidity consistently at 85%.

In contrast, October brings a decline in temperatures, with minimums dipping to 5°C (41°F) and maximums capping at 19°C (67°F), averaging 13°C (56°F). The month is also wetter, with precipitation rising to 130 mm (5.1 in) over 17 days, while humidity remains steady at 85%. For more detailed information, you can check Saint Davids weather in October.

September and November present quite contrasting weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a pleasant maximum of 23°C (73°F), with an average temperature of 15°C (59°F). The month sees around 95 mm (3.7 in) of precipitation over 13 days, while humidity stands at a relatively high 85%. In contrast, November is noticeably cooler, with temperatures dipping further to a minimum of 5°C (42°F) and an average of just 11°C (51°F), peaking at 15°C (60°F). This month experiences increased precipitation of 148 mm (5.8 in) spread across 21 days, and humidity remains high at 82%. For a closer look at the weather specifics for this month, check out Saint Davids weather in November.

September and December showcase a marked contrast in weather patterns. September typically enjoys milder temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 23°C (73°F), with an average of 15°C (59°F). In contrast, December's mercury descends significantly, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 13°C (57°F) and an average of 9°C (49°F). Additionally, precipitation levels rise in December, with 158 mm (6.2 in) falling over 22 days, compared to September's 95 mm (3.7 in) across just 13 days. While September boasts higher humidity at 85%, December maintains a slightly lower humidity level of 80%. For further details, you can check Saint Davids weather in December.

Compare Saint Davids's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Saint Davids

As September unfolds in Saint Davids, the weather showcases a distinct transition into autumn, marked by milder temperatures and increased rainfall. With an average temperature hovering around 15°C (59°F), this month feels notably cooler compared to the summer months, providing a refreshing change for locals and visitors alike. However, the lush landscapes benefit from the 85% humidity and 95 mm of precipitation that grace September, adding vibrancy to the area's natural beauty. While proactive planning for slightly damp days is essential, this time of year offers a unique charm that sets it apart from the sunnier, warmer summer months. For more insights into local weather patterns, explore the Saint Davids Climate.