September Weather in Wexford, Ireland

Last updated: March 17, 2025

In Wexford, Ireland, September brings a notable transition as temperatures range from a comfortable maximum of 19°C (66°F) to a cooler minimum of 9°C (48°F), with an average temperature hovering around 15°C (59°F). This late summer month is characterized by humidity levels soaring to 86%, creating a distinctly moist atmosphere. Rainfall is quite frequent, accumulating to 84 mm (3.3 in) over the month, with precipitation occurring on 13 days. As such, while the weather showcases mild days, it's wise to prepare for the likelihood of rain amid the shifting seasons.

September Temperature in Wexford

As September ushers in the early whispers of autumn in Wexford, Ireland, temperatures begin to show a slight decline from the balmy summer months. With a minimum of 9°C (48°F) and an average that settles around 15°C (59°F), the days are still pleasantly mild, while the maximum peaks at a comfortable 19°C (66°F). This transition not only marks a gentle cooling pattern compared to the warmer months of July and August but also hints at the crispness that winter will eventually bring. September's mild temperatures create an inviting backdrop for exploring Wexford's scenic landscapes, making it a delightful time for locals and visitors alike to appreciate the beauty of the changing seasons.

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

The chart illustrates September temperature patterns in Wexford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec464646485257606059555048
Data source: Temperature data for Wexford 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 Wexford

In September, Wexford experiences a notable transition in weather, with precipitation levels reaching 84 mm (3.3 in) over approximately 13 days of rain. This marks a slight decrease from the wetter months of August and October, where rainfall peaks at 89 mm and 118 mm respectively. The consistent rainfall in September contributes to the overall trend of a damp start to the autumn season, as the lush scenery begins to take on richer hues. As the days shorten and temperatures drop, residents can expect the rhythm of rain to persist, leading into the wetter months ahead, particularly November, which historically sees the highest precipitation at 139 mm (5.5 in). This gradual increase in rainfall hints at the shift toward winter, emphasizing Wexford's characteristic maritime climate.

September Precipitation Trends in Wexford

The chart displays monthly precipitation patterns in Wexford, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6610388605770628984118139131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wexford

September in Wexford, Ireland continues the trend of elevated humidity that characterizes the late summer months, with levels reaching 86%. This slight uptick sets the stage for the transition into autumn, where average humidity remains consistently high. Throughout the year, Wexford experiences a notable average humidity of around 85% to 86%, peaking in February, July, and September. As the seasons change, humidity levels subtly shift, reflecting the region's maritime climate. As October approaches, residents can expect even higher humidity levels, marking a gradual increase that persists into winter. Overall, September serves as a bridge, seamlessly connecting the humid warmth of summer to the cooler, damp conditions of autumn.

September Average Humidity in Wexford

This chart illustrates the average monthly humidity levels in Wexford, 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 Wexford

In September, Wexford experiences a moderate UV Index of 5, indicating a slight drop from the high levels seen in the summer months of June and July. This month marks a transition from the intensity of summer, where burn times were as short as 15 minutes, to a more leisurely pace with a burn time of 30 minutes. As the days begin to shorten, it's essential to remain mindful of sun exposure, especially when engaging in outdoor activities. This month's UV Index, while still moderate, signals the importance of practicing sun safety as the weather remains pleasant for outdoor endeavors. For further insights on UV exposure in Wexford, visit Wexford UV Index.

Maximum UV Index Levels in Wexford for September

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

In Wexford, Ireland, September marks the tail end of a splendid summer, offering an impressive 317 hours of sunshine. This delightful stretch of sunlight follows an ascent from the year’s lowest in January with just 98 hours, gradually building up to a peak in July at 420 hours. As the season transitions, the sunshine begins to wane, yet September still provides a generous dose of warmth and light, surpassing the 251 hours expected in October. This month’s brightness is a gentle reminder of the vibrant summer just passed, bridging the gap as autumn's cooler embrace settles in, while nature offers a picturesque backdrop of changing leaves and lingering blue skies.

Monthly Sunshine Duration in Wexford: September Highlighted

The September sunshine duration represents the total number of hours Wexford 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.
JanFebMarAprMayJunJulAugSepOctNovDec98h155h218h325h411h412h420h371h317h251h139h111h
Data source: Wexford September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Wexford During September

In Wexford, Ireland, the probability of encountering sunny weather in September stands at a modest 26%. This figure reflects a noticeable dip compared to the sunnier months of April (51%) and May (39%), both of which showcase the vibrant springtime appeal. As summer transitions into autumn, the chances of sunshine decrease further, dipping below the baseline of 30% seen in both June and July. September serves as a transitional month, where summer's warmth begins to wane, hinting at the shorter days and cooler temperatures that lie ahead in the autumn months of October and November. While chances for sun might be less favorable, the charm of Wexford’s landscapes during this time, with changing foliage and brisk air, still offers a unique allure.

Percentage of Sunny Days in September in Wexford

The chart illustrates the percentage of sunny days in Wexford 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 Wexford experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%25%29%51%39%29%39%35%26%21%32%25%
Data source: Wexford September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Wexford in September

As summer bids farewell, September in Wexford, Ireland, welcomes a gradual transition into autumn with an average daylight duration of 12 hours. This month marks a gentle decline from the long, sun-soaked days of July and August, which enjoyed a peak of 16 and 14 hours, respectively. The slower decrease in daylight becomes evident, as September retains more light than the darker months ahead, such as October, which only offers 10 hours. This balance of daylight provides a perfect backdrop for enjoying the autumnal beauty of the region, blending late summer warmth with the crisp beginnings of fall, making each day feel both vibrant and mellow.

Average Daylight Hours in Wexford for September

The chart illustrates the variation in daylight duration in Wexford throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 17m9h 55m11h 54m13h 57m15h 44m16h 40m16h 10m14h 34m12h 36m10h 34m8h 44m7h 46m
Data source: Wexford daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Wexford

As summer transitions to autumn in Wexford, Ireland, the September winds deliver a gentle breath of change, averaging 5.1 m/s (11 mph). This marks a slight decrease from the breezier summer months, as July and August enjoyed winds of 4.3 m/s (10 mph) and 5.7 m/s (13 mph), respectively. Interestingly, this lull precedes a notable uptick in wind speed heading into the fall, with October boasting an increase to 7.7 m/s (17 mph). Such patterns underscore the dynamic nature of Wexford's climate, where each month paints a unique picture of the shifting seasons, offering glimpses of both serenity and vigor in the air.

Average September Wind Speed in Wexford

The chart displays monthly wind speed patterns in Wexford, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.59.56.95.46.25.44.35.75.1 m/s7.77.08.0
Data source: Wexford September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Wexford Compares to Other Months

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

September and January present distinctly different weather patterns. In September, temperatures range from a cool 9°C (48°F) at night to a mild 19°C (66°F) during the day, with an average of 15°C (59°F). Precipitation levels are moderately high, with 84 mm (3.3 in) spread over 13 days and humidity at 86%.

In contrast, January offers much cooler conditions, with temperatures dipping to a minimum of 2°C (35°F) and peaking at 13°C (56°F), resulting in a lower average of 8°C (46°F). Although January sees less precipitation at 66 mm (2.6 in) over the same number of days, the humidity remains similar at 85%. For a detailed look at January's climate specifics, visit Wexford weather in January.

In September, the weather starts to transition from summer, with temperatures ranging from a mild 9°C (48°F) to a comfortable 19°C (66°F), averaging around 15°C (59°F). However, precipitation is common, with around 84 mm (3.3 in) falling over approximately 13 days, while humidity remains high at 86%. In contrast, February is quite chilly, with temperatures dipping as low as 2°C (35°F) and peaking at 12°C (55°F), averaging only 8°C (46°F). This month experiences more rainfall, totaling about 103 mm (4.1 in) over 16 days, with humidity still maintaining that same level of 86%. For more detailed information, check out Wexford weather in February.

In comparing the weather between September and March, one can observe notable differences. September tends to be milder, with average temperatures ranging from a chilly 9°C (48°F) at night to a pleasant high of 19°C (66°F) during the day. In contrast, March experiences colder conditions, with averages between -1°C (30°F) at night and a maximum of just 12°C (53°F) during the day. Although both months experience similar humidity levels at 86%, March sees slightly more precipitation, with 88 mm (3.5 in) over 15 days, compared to September’s 84 mm (3.3 in) spread across 13 days. For more detailed information on March weather, you can visit Wexford weather in March.

September generally experiences milder temperatures compared to April, with averages around 15°C (59°F) and maximums reaching up to 19°C (66°F). In contrast, April's cooler climate sees average temperatures of only 9°C (48°F) and peaks at 13°C (55°F). Additionally, September tends to be wetter, with 84 mm (3.3 in) of precipitation over 13 days, while April receives a relatively lighter 60 mm (2.4 in) over 8 days. Interestingly, both months have high humidity levels, with September at 86% and April slightly lower at 85%. For a closer look at April's weather specifics, check out Wexford weather in April.

In comparing the weather of September and May, September tends to be milder, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 19°C (66°F) and an average of 15°C (59°F). In contrast, May has cooler temperatures, with a range from 5°C (41°F) to 15°C (60°F) and an average of 11°C (52°F). Additionally, September experiences more precipitation, totaling 84 mm (3.3 in) over 13 days, whereas May has less rain at 57 mm (2.3 in) across 9 days. Humidity levels are relatively similar, with September at 86% and May at 83%. For more detailed information, you can visit Wexford weather in May.

When comparing the weather in September and June, there's only a slight difference in temperature, with both months experiencing minimum temperatures around 9°C (48°F) and maximums reaching 19°C (66°F). However, September typically has a slightly warmer average temperature of 15°C (59°F), compared to June's 14°C (57°F). Precipitation also varies, with September receiving 84 mm (3.3 in) of rain over 13 days, while June sees less rain at 70 mm (2.8 in) over 11 days. Interestingly, humidity remains high in both months, with September at 86% and June at 85%. For more details on June weather specifically, you can check Wexford weather in June.

In comparing the weather of September and July, it is evident that both months experience similar average temperatures, hovering around 15°C (60°F). However, September tends to be slightly cooler at night with a minimum temperature of 9°C (48°F), compared to July’s minimum of 11°C (52°F). Additionally, September sees more precipitation with 84 mm (3.3 in) over 13 days, while July has 62 mm (2.4 in) spread across 11 days. Despite this difference in rainfall, both months share a high humidity level of 86%. For more detailed insights into July weather, you can visit Wexford weather in July.

September weather shows a slight decline in temperatures compared to August, with average temperatures dropping from 16°C (60°F) in August to 15°C (59°F) in September. Both months experience similar maximum temperatures, peaking at 19°C (66°F). However, September is characterized by slightly more precipitation, totaling 84 mm (3.3 in) over 13 days, compared to August’s 89 mm (3.5 in) across 11 days. Humidity levels remain comparable, with September at 86% and August at 85%. For a more detailed comparison, you can check Wexford weather in August.

In September, temperatures typically range from a minimum of 9°C (48°F) to a maximum of 19°C (66°F), with an average temperature of 15°C (59°F). The month experiences an average precipitation of 84 mm (3.3 in) over 13 rainy days, and humidity levels hover around 86%. In contrast, October sees slightly cooler temperatures, with a minimum of 6°C (43°F) and an average of 13°C (55°F), peaking at 18°C (65°F). Precipitation increases to 118 mm (4.6 in) spread over 16 days, accompanied by a marginal rise in humidity to 87%. For more detailed information about weather conditions, visit Wexford weather in October.

In September, temperatures range from a minimum of 9°C to a maximum of 19°C, with an average of 15°C, making it a relatively mild month. However, it experiences around 84 mm of precipitation over 13 days, contributing to a humid environment with 86% humidity. In contrast, November brings cooler temperatures, with a minimum of 4°C and a maximum of 15°C, averaging at 10°C. This month sees increased rainfall, totaling 139 mm over 18 days, while maintaining the same high humidity level of 86%. For more detailed insights, you can check Wexford weather in November.

In September, the weather is relatively mild with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 19°C (66°F), while December experiences significantly cooler temperatures, with averages between 2°C (36°F) and 13°C (56°F). Precipitation is more pronounced in December, totaling 131 mm (5.1 in) over 17 days, compared to September's 84 mm (3.3 in) across 13 days. Although both months see high humidity, September's average humidity is slightly higher at 86%, while December remains at a comfortable 84%. For more details on the weather specifics, you can visit Wexford weather in December.

Compare Wexford's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Wexford

As September unfolds in Wexford, the weather shifts towards a cooler and more varied climate, marking a distinct transition from the warmer summer months. Temperatures typically range from mild to cool, creating a refreshing atmosphere, while the increased prevalence of rain with around half the month experiencing precipitation adds a sense of renewal to the lush landscape. With a notable humidity level wrapping the region, September invites both locals and visitors to embrace cozy outings and enjoy the scenic beauty. To understand more about how Wexford's weather changes throughout the year, check out Wexford Climate.