September Weather in Blessington, Ireland

Last updated: March 17, 2025

In September, Blessington, Ireland, offers a blend of mild weather and refreshing rain. With a maximum temperature reaching 24°C (76°F) and an average of 13°C (56°F), the days are comfortably warm, gradually transitioning to the cooler evenings, where temperatures can drop to 2°C (35°F). This month is characterized by 68 mm (2.7 in) of rainfall spread over approximately 13 days, contributing to an impressive humidity level of 86%. Visitors can expect a lush, vibrant landscape, making it an ideal time for exploration amidst the gentle autumn beginnings.

September Temperature in Blessington

In September, Blessington, Ireland, begins to transition into the cooler months, yet it retains a mild charm. The minimum temperature nudges down to around 2°C (35°F), while the average sits comfortably at 13°C (56°F), akin to the pleasant warmth of late summer. With a maximum of 24°C (76°F), the days still boast a hint of summer’s lingering heat, inviting outdoor explorations. This month reflects a balance of warmth and the forthcoming chill, highlighting a gradual dip in temperatures as the year progresses, making September a delightful time to experience the lush landscapes of Ireland before autumn firmly takes hold.

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

The chart illustrates September temperature patterns in Blessington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414344475257615956514543
Data source: Temperature data for Blessington 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 Blessington

September in Blessington, Ireland, welcomes a moderate precipitation amount of 68 mm (2.7 in), contributing to the region's lush landscapes. This volume marks a slight decrease from August's 94 mm (3.7 in), hinting at a gradual tapering of summer rains. Over 13 days of rainfall, September aligns with the patterns of both May and June, where steady showers nourish the earth without overwhelming it. As autumn approaches, the shift in precipitation signals the transition to the more robust rainfall expected in the coming months, setting the stage for the vibrant colors of fall foliage. The consistent precipitation throughout the late summer and early fall months underscores Blessington's characteristic dampness, which plays a vital role in sustaining its natural beauty.

September Precipitation Trends in Blessington

The chart displays monthly precipitation patterns in Blessington, 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.
JanFebMarAprMayJunJulAugSepOctNovDec557981517273789468828890
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Blessington

In September, Blessington experiences a notable consistency in its humidity levels, with the average hovering around 86%. This slight uptick mirrors the preceding summer months, where humidity also peaked, indicating the lingering warmth of the season. As autumn approaches, the humidity remains relatively high, setting the stage for the cooler, crisp days ahead. Overall, the gradual fluctuation from January's 85% to October's 87% suggests a stable yet dynamic climate that keeps the air rich and atmospheric throughout the year, welcoming residents and visitors to experience the lush greenery typical of this enchanting Irish locale.

September Average Humidity in Blessington

This chart illustrates the average monthly humidity levels in Blessington, 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.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%85%83%85%86%85%86%87%87%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Blessington

As September rolls in Blessington, Ireland, the UV Index settles at a moderate level of 5, with a recommended burn time of 30 minutes for fair skin. This moderate rating marks a gradual decline from the peak very high indices of June and July, which saw values soar to 8. In contrast to the sharp increases witnessed in late spring and summer, September ushers in a more temperate climate where sun exposure is manageable yet still requires caution. The transition into autumn signals a return to higher burn times compared to the sweltering summer, reminding everyone to stay mindful of UV protection. For more detailed insights, check out the full Blessington UV Index.

Maximum UV Index Levels in Blessington for September

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

September in Blessington, Ireland, welcomes the tail-end of summer with 294 hours of sunshine, continuing a steady decline from the peak summer months. After basking in an impressive 391 hours of sunlight in May, the warm embrace of August still lingers, though it gives way to the softer, golden hues of autumn. While September's hours dip noticeably from the energetic brightness of the summer, they still contrast sharply with the winter months that follow, particularly the dim days of November and December, which only offer 120 and 95 hours, respectively. This transition reflects nature's rhythm as the days gradually shorten, inviting a cozy warmth that heralds the arrival of seasonal change in the scenic landscapes of Blessington.

Monthly Sunshine Duration in Blessington: September Highlighted

The September sunshine duration represents the total number of hours Blessington 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.
JanFebMarAprMayJunJulAugSepOctNovDec83h147h191h311h391h385h385h339h294h230h120h95h
Data source: Blessington September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Blessington During September

In Blessington, Ireland, the likelihood of sunny weather in September is relatively low, with just a 19% chance of sunshine gracing the skies. This marks a decline compared to the somewhat brighter months of April and May, which saw peaks of 43% and 31%, respectively. As summer gives way to autumn, the trend indicates a continued decrease in sunshine, with October settling at a mere 18%. This reflects a broader pattern observed throughout the year, where September's chance of sun is amongst the lowest, hinting at the approaching chill of fall and inviting visitors to prepare for more overcast days ahead. Overall, the fading summer sun in September serves as a gentle reminder of the shifting seasons in this picturesque Irish town.

Percentage of Sunny Days in September in Blessington

The chart illustrates the percentage of sunny days in Blessington 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 Blessington experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec24%21%21%43%31%22%29%24%19%18%25%22%
Data source: Blessington September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Blessington in September

September in Blessington, Ireland, marks a transitional phase in daylight duration as summer's warmth begins to wane. With 12 hours of daylight, the month showcases a noticeable shift from the longer days of summer, where June and July basked in a full 16 hours. Following the vibrant heights of summer, September’s daylight serves as a gentle reminder of the approaching autumn, as it gradually declines towards October's 10 hours. This month often presents a harmonious blend of lingering daylight and the first hints of crisp autumn air, creating a perfect backdrop for outdoor activities before the shorter days set in.

Average Daylight Hours in Blessington for September

The chart illustrates the variation in daylight duration in Blessington throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 8m9h 50m11h 54m14h 1m15h 53m16h 52m16h 21m14h 39m12h 37m10h 30m8h 36m7h 35m
Data source: Blessington daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Blessington

As September graces Blessington, Ireland, the average wind speed settles at a gentle 3.1 m/s (7 mph), reflecting a slight dip from the breezier summer months. This transition, marked by a gradual decrease from the previous month's 3.3 m/s, signals the onset of autumn and the calming of the seasonal gales. Interestingly, September's winds are among the lowest of the year, paralleling the notably light breezes of July. As the landscape shifts and the leaves begin to turn, the softer winds of September create a tranquil atmosphere, inviting both locals and visitors to embrace the serene beauty of the season in this picturesque locale.

Average September Wind Speed in Blessington

The chart displays monthly wind speed patterns in Blessington, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.95.44.33.13.63.42.63.33.1 m/s4.34.14.3
Data source: Blessington September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Blessington Compares to Other Months

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

In September, temperatures range from a cool 2°C (35°F) at night to a pleasant 24°C (76°F) during the day, averaging around 13°C (56°F). The month is characterized by relatively high humidity at 86% and sees around 68 mm (2.7 in) of precipitation over approximately 13 days. In contrast, January experiences much colder temperatures, with a minimum of -5°C (24°F) and a maximum of 13°C (56°F), averaging only 5°C (42°F). Precipitation in January is slightly lower at 55 mm (2.2 in), occurring over about 10 days, and the humidity remains similar at 85%. For more detailed information on January weather patterns, you can visit Blessington weather in January.

In comparing the weather of September and February, we see notable differences in temperature and precipitation patterns. September experiences a milder climate with average temperatures ranging from a minimum of 2°C (35°F) to a maximum of 24°C (76°F), whereas February is significantly cooler, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 16°C (60°F). Precipitation levels are somewhat comparable, with September receiving 68 mm (2.7 in) over 13 days and February totaling 79 mm (3.1 in) over 15 days. Both months share a high humidity level of 86%. For more detailed insights, you can check out Blessington weather in February.

September and March present contrasting weather patterns. In September, temperatures range from a mild minimum of 2°C (35°F) to a comfortable maximum of 24°C (76°F), with an average of 13°C (56°F). The month experiences about 68 mm (2.7 in) of precipitation over 13 days, maintaining a high humidity level of 86%. Conversely, March is cooler, with temperatures dipping to a minimum of -6°C (22°F) and reaching a maximum of 17°C (63°F), averaging around 7°C (44°F). It sees slightly higher precipitation, totaling 81 mm (3.2 in) across 16 days, yet shares the same humidity level of 86%. For more specifics on March weather, you can check Blessington weather in March.

September and April present quite distinct weather patterns. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 24°C (76°F), making it generally warmer, with an average temperature of 13°C (56°F). The month experiences relatively higher precipitation at 68 mm (2.7 in) across 13 days, with humidity levels reaching 86%. In contrast, April has cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 21°C (69°F), resulting in an average temperature of 8°C (47°F). While April receives less rainfall at 51 mm (2.0 in) over 11 days, it maintains a similar humidity level at 85%. For a detailed look at the weather conditions in April, check out Blessington weather in April.

In comparing September and May, both months exhibit mild temperatures, but September generally feels warmer with an average of 13°C (56°F) compared to May's average of 11°C (53°F). September sees a maximum temperature of 24°C (76°F), closely mirroring May's high of 23°C (74°F). Precipitation levels are similar, with September experiencing 68 mm (2.7 in) and May slightly higher at 72 mm (2.8 in). Both months have a comparable number of rainy days, with 13 days of precipitation. Humidity is a bit higher in September at 86%, whereas May has a slightly lower humidity level of 83%. For a deeper look at the specifics of weather patterns in May, check out Blessington weather in May.

In comparing the weather between September and June, one can observe notable differences in temperature and precipitation patterns. September experiences a minimum temperature of 2°C (35°F), averaging 13°C (56°F) with a maximum of 24°C (76°F). In contrast, June starts warmer, with a minimum of 5°C (41°F), an average of 14°C (58°F), and a maximum reaching 27°C (80°F). Both months see considerable rainfall, with September recording 68 mm (2.7 in) over 13 days and June slightly higher at 73 mm (2.9 in) over 14 days. Humidity levels are comparable, with September at 86% and June at 85%. For more specific details, you can check out Blessington weather in June.

September weather features cooler temperatures compared to July, with a minimum of 2°C (35°F) and an average of 13°C (56°F), while July enjoys milder conditions with a minimum of 7°C (44°F) and an average of 16°C (61°F). The maximum temperature in September reaches 24°C (76°F), slightly lower than July's peak of 27°C (81°F). Both months experience similar levels of humidity at 86%, but September sees slightly less precipitation, totaling 68 mm (2.7 in) over 13 days, compared to July's 77 mm (3.0 in) over the same number of days. For more details on July’s weather, you can check Blessington weather in July.

In comparing the weather of September to that of August, September exhibits slightly cooler temperatures, with a minimum of 2°C (35°F) and an average of 13°C (56°F), whereas August has a minimum of 6°C (43°F) and an average of 15°C (60°F). Both months reach a maximum temperature of 24°C (76°F), but September sees reduced precipitation, amounting to 68 mm (2.7 in) over 13 days compared to August's 94 mm (3.7 in) over 17 days. Humidity levels are quite similar, with September at 86% and August at 85%. For more details on the weather in August, you can visit Blessington weather in August.

In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 24°C (76°F), with an average of 13°C (56°F). The month experiences 68 mm (2.7 in) of precipitation over 13 days, while humidity levels hover around 86%. October, on the other hand, sees a drop in temperatures, with a minimum of 0°C (32°F), an average of 10°C (51°F), and a maximum of 19°C (67°F). Precipitation increases slightly to 82 mm (3.2 in), also spread over 13 days, and humidity rises marginally to 87%. For a closer look at conditions during this month, check out Blessington weather in October.

In September, the weather is generally warmer, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 24°C (76°F) and an average of 13°C (56°F). This month typically sees around 68 mm (2.7 in) of precipitation over 13 days, while humidity remains high at 86%. In contrast, November experiences cooler temperatures, with a minimum of -1°C (30°F), an average of 7°C (46°F), and a maximum of 15°C (59°F). Precipitation increases slightly to 88 mm (3.5 in) over 14 days, maintaining the same high humidity of 86%. For a more detailed look at November's weather, visit Blessington weather in November.

September and December present markedly different weather conditions. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 24°C (76°F), with an average of 13°C (56°F). This month sees a fair amount of rainfall at 68 mm (2.7 in) over approximately 13 days, accompanied by relatively high humidity levels at 86%. In contrast, December experiences colder temperatures, with lows dropping to -4°C (25°F) and an average of 6°C (43°F), peaking at a maximum of 13°C (56°F). Precipitation increases to 90 mm (3.5 in) over about 15 days, while humidity remains slightly lower at 84%. For a closer look at December conditions, check out Blessington weather in December.

Compare Blessington's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Blessington

September in Blessington marks a transition into cooler weather, contrasting with the warmth of the summer months. As the temperature begins to dip, the average reaches a moderate 13°C while still allowing for the occasional peak of 24°C during the day. However, as autumn approaches, expect more frequent rainfall, with nearly half the month experiencing precipitation, totaling 68 mm over 13 days. The humidity also lingers at a high 86%, making the air feel noticeably brisker. This blend of dampness and cooler temperatures heralds the change of seasons, inviting deeper exploration of Blessington's natural beauty and rich landscapes. For more detailed insights, visit Blessington Climate.