September Weather in Criccieth, United Kingdom

Last updated: March 17, 2025

In Criccieth, United Kingdom, September brings a dynamic weather experience, with temperatures ranging from a comfortable 6°C (42°F) to a warm 26°C (78°F), averaging around 14°C (57°F). With an 85% humidity level, the air often feels moist and invigorating. However, occasional showers are common, as the month sees about 146 mm (5.7 in) of precipitation spread over 18 days. This blend of mild warmth and frequent rainfall makes September a unique time to explore the charm of Criccieth, where coastal beauty meets the unpredictable dance of British weather.

September Temperature in Criccieth

As September unfolds in Criccieth, the lingering warmth of summer begins to make its gentle transition into the crispness of autumn. The temperatures reveal this shift, with minimums resting at a comfortable 6°C (42°F), while the average climbs to a pleasant 14°C (57°F), culminating in highs of 26°C (78°F)—a delightful time for outdoor activities. This month stands out as one of the last chances to bask in relatively warm conditions before the cooler months arrive, showcasing a harmonious blend of warmth and accessibility that beckons locals and visitors alike to embrace the beauty of the coastal town. With a gradual decline from the summer peaks, September maintains a vibrant yet soothing atmosphere, making it an ideal time to explore Criccieth’s stunning landscapes and rich history.

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

The chart illustrates September temperature patterns in Criccieth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605957524744
Data source: Temperature data for Criccieth 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 Criccieth

Located along the picturesque coast of North Wales, Criccieth experiences a significant amount of rainfall in September, with 146 mm (5.7 in) of precipitation over 18 days. This month sees a continuation of the wet summer pattern, following August's substantial 162 mm (6.4 in), indicating that the region remains in the grip of its typically damp climate. The rainfall is a sharp contrast to the drier spring months of April and May, which recorded only 62 mm (2.4 in) and 87 mm (3.4 in), respectively. As autumn approaches, the precipitation begins to ramp up, leading into October's average of 206 mm (8.1 in), suggesting a climatic shift as the year progresses. The trend reflects Criccieth's characteristic interlude between seasons, where the verdant landscape is nourished by the sustained rainfall, maintaining its charm even as the days grow shorter.

September Precipitation Trends in Criccieth

The chart displays monthly precipitation patterns in Criccieth, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1211621526287106105162146206176203
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Criccieth

As summer fades, September in Criccieth brings a notable shift in humidity, reaching an average of 85%. This slight increase from August's 79% indicates the onset of autumn, highlighting a trend where humidity gradually rises as the year progresses. Compared to the preceding months, September presents a more comfortable atmosphere, preparing residents and visitors alike for the looming cooler months, with October's levels expected to jump to 90%. Thus, while the warmth of summer lingers, the steady climb in humidity serves as a gentle reminder of the seasonal transition in this picturesque coastal town.

September Average Humidity in Criccieth

This chart illustrates the average monthly humidity levels in Criccieth, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Criccieth

As September unfolds in Criccieth, United Kingdom, the UV Index drops to 5, indicating a moderate exposure level. This marks a notable decline from the height of summer, where the index peaked at 8 during June and July. With a burn time of just 30 minutes, it’s still essential to exercise caution while enjoying outdoor activities. The trends reveal that as the seasons transition from the hot summer months to the cooler fall, the UV intensity gradually diminishes, making September a more manageable time for sun exposure, yet still requiring some attention to skin protection. For detailed information, visit Criccieth UV Index.

Maximum UV Index Levels in Criccieth for September

The chart shows the monthly maximum UV Index (UVI) for Criccieth 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Criccieth 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 Criccieth

As summer gracefully transitions to autumn, September in Criccieth, United Kingdom, boasts a commendable 315 hours of sunshine, marking a delightful peak for early fall. Following the sun-drenched months of July and August, which each welcomed over 400 hours, September retains a golden glow, although it dips from the summer highs. This trend showcases the region's ability to enjoy prolonged sunny spells despite the impending chill of October, which sees the hours fall to 238. With a significant leap from the meager 93 hours recorded in January, September remains a cherished time for locals and visitors alike to soak in the lingering warmth before the shorter days set in. Overall, this vibrant month encapsulates the perfect balance of late summer joys and early autumn beauty, inviting everyone to relish the last rays of sunshine before winter approaches.

Monthly Sunshine Duration in Criccieth: September Highlighted

The September sunshine duration represents the total number of hours Criccieth 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.
JanFebMarAprMayJunJulAugSepOctNovDec93h162h228h335h415h404h421h383h315h238h126h109h
Data source: Criccieth September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Criccieth During September

In Criccieth, the likelihood of basking in the sun drops notably as September rolls in, with a mere 22% chance of clear skies, aligning closely with the summer's winding down. This reflects a broader trend, as the months transition from peak sunshine in April and the early summer, which boasts a higher likelihood of sun. While September holds some lingering warmth, it still marks a decrease compared to the vibrant summer months, indicating that residents and visitors alike might want to keep an umbrella handy. As autumn takes hold, the chance of sunny weather will continue to decline, with the subsequent months bringing even less sunshine, making September one of the last gasps of cheerful weather before winter's approach.

Percentage of Sunny Days in September in Criccieth

The chart illustrates the percentage of sunny days in Criccieth 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 Criccieth experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%22%25%46%30%27%36%25%22%16%20%20%
Data source: Criccieth September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Criccieth in September

As September arrives in Criccieth, the length of daylight begins to shift noticeably from the long, sun-kissed days of summer. After enjoying 16 hours of daylight in June and July, residents and visitors experience a gentle decline, with September offering around 12 hours of light. This gradual transition is a prelude to autumn, mirroring the natural rhythms of the seasons as daylight diminishes steadily. With September's milder light, the scenery transforms, casting an enchanting hue over the landscape while inviting exploration of the area’s vibrant beauty before the days continue to shorten heading into October.

Average Daylight Hours in Criccieth for September

The chart illustrates the variation in daylight duration in Criccieth throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 10m9h 51m11h 54m14h15h 51m16h 50m16h 18m14h 38m12h 36m10h 31m8h 38m7h 37m
Data source: Criccieth daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Criccieth

In Criccieth, the arrival of September brings a gentle breeze, with average wind speeds dipping to 3.7 m/s (8 mph). This marks a continuation of the calmer summer months, following the slightly breezier conditions of August. As the year begins to shift towards autumn, the winds of September feel softer, providing a serene backdrop for beach strolls and seaside adventures. Interestingly, this tranquil period is a contrast to the more invigorating winds of October, which pick up to 6.4 m/s (14 mph). The trend of decreasing wind speeds from the peak summer months highlights September as a transitional time, inviting both locals and visitors to savor the last whispers of warm weather before the intensifying autumn gales begin.

Average September Wind Speed in Criccieth

The chart displays monthly wind speed patterns in Criccieth, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.36.65.73.84.74.03.24.43.7 m/s6.45.55.9
Data source: Criccieth September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Criccieth Compares to Other Months

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

September and January offer quite contrasting weather experiences. In September, temperatures range from a minimum of 6°C (42°F) to a comfortable maximum of 26°C (78°F), with an average of 14°C (57°F). The month sees significant rainfall, with 146 mm (5.7 in) spread over 18 days and a high humidity level of 85%. In contrast, January presents a chillier environment, with temperatures dropping to a minimum of -1°C (30°F) and peaking at just 13°C (55°F), averaging 6°C (43°F). Although precipitation decreases slightly to 121 mm (4.8 in), it still falls across 16 days, and humidity rises to 89%. For a detailed breakdown of January weather, visit Criccieth weather in January.

September and February exhibit notable differences in weather patterns. September enjoys milder temperatures, with an average of 14°C (57°F) and highs reaching 26°C (78°F), creating a pleasant atmosphere, ideal for outdoor activities. In contrast, February is much cooler, with an average temperature of 6°C (43°F) and lows dipping to -3°C (28°F), making it a time for warmer clothing. Both months experience significant rainfall, with September receiving 146 mm (5.7 in) over 18 days and February slightly surpassing that with 162 mm (6.4 in) across 19 days. Humidity levels are also relatively high in both months, at 85% in September and 88% in February, contributing to a damp feel. For more details on February weather, check out Criccieth weather in February.

In comparing the weather of September and March, one can observe notable differences in temperature and precipitation. September typically enjoys milder temperatures, with averages around 14°C (57°F) and highs reaching up to 26°C (78°F). In contrast, March experiences cooler conditions, averaging only 7°C (44°F), with maximum temperatures climbing to 16°C (61°F). Precipitation levels are quite similar for both months, with September receiving 146 mm (5.7 in) over 18 days and March slightly higher at 152 mm (6.0 in) over 19 days. Humidity remains fairly consistent, with September at 85% and March slightly higher at 86%. For more detailed information, you can check Criccieth weather in March.

When comparing the weather in September and April, clear differences emerge. September boasts a broader temperature range, with minimums around 6°C (42°F) and maximums peaking at 26°C (78°F), making it generally warmer than April, where temperatures range from a chilly 0°C (33°F) to a mild 19°C (66°F). Additionally, September experiences significantly more rainfall, with 146 mm (5.7 in) spread over 18 days compared to April's 62 mm (2.4 in) over just 12 days. Despite these differences, both months maintain high humidity levels, with September at 85% and April slightly lower at 84%. For more specific details on April's climate, check out Criccieth weather in April.

September and May present distinct weather patterns. September enjoys warmer temperatures, ranging from a minimum of 6°C (42°F) to a maximum of 26°C (78°F), with an average of 14°C (57°F). In contrast, May is cooler, with temperatures fluctuating between 2°C (36°F) and 23°C (73°F), averaging 11°C (52°F). Additionally, September sees more rainfall, accumulating 146 mm (5.7 in) over 18 days, compared to May's 87 mm (3.4 in) over just 12 days. While September has a higher humidity level of 85%, May remains slightly less humid at 79%. For more detailed insights, you can check Criccieth weather in May.

When comparing the weather in September and June, both months exhibit a similar average temperature of 14°C (57°F), with maximum temperatures reaching 26°C (79°F) in June and 26°C (78°F) in September. However, September tends to be cooler at night with a minimum temperature of 6°C (42°F) compared to June's minimum of 7°C (46°F). Additionally, September experiences more precipitation, with 146 mm (5.7 in) spread over 18 days, compared to June's 106 mm (4.2 in) over 16 days. Humidity levels are slightly higher in September at 85%, versus June's 81%. For further details on June weather, you can check Criccieth weather in June.

In comparing the weather between September and July, September tends to be slightly cooler overall, with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 26°C (78°F), while July has milder temperatures, ranging from a minimum of 9°C (48°F) to a maximum of 25°C (77°F). Although July enjoys a bit higher average temperature, September experiences more precipitation, with 146 mm (5.7 in) over 18 days compared to July’s 105 mm (4.1 in) over 15 days. Additionally, humidity levels are higher in September at 85%, compared to 78% in July. For more detailed insights, you can check Criccieth weather in July.

Comparing the weather in September to August reveals some notable differences. September features slightly cooler temperatures, with a minimum of 6°C (42°F) and an average of 14°C (57°F), compared to August's minimum of 9°C (49°F) and average of 15°C (60°F). While September can reach a maximum of 26°C (78°F), August typically peaks at 24°C (75°F). Both months experience considerable rainfall, but September has 146 mm (5.7 in) over 18 days, slightly less than August's 162 mm (6.4 in) across 22 days. Additionally, September has higher humidity at 85%, whereas August holds a steadier 79%. For a closer look at weather conditions in August, you can visit Criccieth weather in August.

September typically experiences milder temperatures compared to October, with a minimum of 6°C and an average of 14°C, peaking at 26°C. However, as the season transitions into October, temperatures drop significantly, reaching a minimum of 1°C and an average of 11°C, with a maximum of only 20°C. Additionally, rainfall increases from 146 mm over 18 days in September to 206 mm over 22 days in October, contributing to a rise in humidity from 85% to 90%. This shift indicates a more pronounced wet and cool climate in October. For more details on October weather, you can visit Criccieth weather in October.

In comparing the weather between September and November, it's clear that November brings a notable drop in temperature, with average daily highs of only 14°C (58°F), compared to September's warmer highs of 26°C (78°F). The minimum temperatures also decline significantly, from 6°C (42°F) in September to just 1°C (34°F) in November. Additionally, November experiences increased precipitation levels, with 176 mm (6.9 in) over 21 days, compared to September's 146 mm (5.7 in) over 18 days. Humidity also rises slightly, reaching 91% in November, compared to 85% in September. For more detailed information on November weather, you can visit Criccieth weather in November.

September and December present quite different weather experiences. In September, temperatures range from a mild 6°C (42°F) at night to a maximum of 26°C (78°F) during the day, with an average of 14°C (57°F). The month also sees a moderate amount of precipitation, with 146 mm (5.7 in) falling over 18 days and humidity levels at 85%. In contrast, December is much colder, with temperatures dropping to a minimum of -2°C (29°F) and peaking at just 12°C (54°F), averaging around 7°C (45°F). The precipitation increases to 203 mm (8.0 in) over 24 days, and humidity rises slightly to 89%. For more details on the weather in December, you can check Criccieth weather in December.

Compare Criccieth's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Criccieth

As September approaches, Criccieth experiences a notable shift in its weather patterns, offering a unique blend of summer warmth paired with the crispness of autumn. With average temperatures falling to a comfortable 14°C, the month features occasional highs reaching 26°C, creating ideal conditions for outdoor activities. However, the increased precipitation—averaging 18 days of rain and 146 mm of rainfall—signals the transition to wetter days, contributing to a marked increase in humidity levels around 85%. This combination of factors sets September apart from the hotter, drier months of summer, embracing a refreshing yet unpredictably wet atmosphere. For a deeper insight into how Criccieth's weather evolves throughout the year, explore more at Criccieth Climate.