Last updated: March 17, 2025
September in Waterford, Ireland offers a delightful transition into autumn, with temperatures ranging from a maximum of 21°C (70°F) to a minimum of 6°C (42°F). The average temperature settles at a comfortable 14°C (58°F), providing a perfect backdrop for outdoor exploration. However, expect some moisture, as the month sees around 74 mm (2.9 in) of rainfall spread across approximately 12 days, contributing to the region's lush green landscapes. With an humidity level of 86%, the air often feels brisk but invigorating, making September an enchanting time to experience the charm of Waterford.
September in Waterford, Ireland, marks a gentle transition into autumn, with temperatures presenting a comforting blend of warmth and crispness. This month typically sees minimums around 6°C (42°F) and averages reaching 14°C (58°F), providing a pleasant backdrop for outdoor activities. Highs can reach up to 21°C (70°F), reminiscent of summer's lingering warmth but gradually giving way to the cooler months ahead. As days shorten and the leaves begin to change, the September climate invites both locals and visitors alike to enjoy the rich natural beauty of the region while savoring the milder temperatures before the chill of October sets in.
In September, Waterford experiences a refreshing balance of rainfall, recording 74 mm (2.9 in) of precipitation over 12 days. As summer transitions to autumn, this amount reflects a slight increase compared to the previous month, August, which saw 93 mm (3.7 in) of rain spread over the same number of days. Interestingly, September's weather foreshadows the upcoming wetter months, with October and November typically bringing even higher levels of rainfall, averaging 110 mm (4.3 in) and 125 mm (4.9 in) respectively. This gradual uptick in precipitation sets the stage for the lush landscapes that define Ireland's fall season, making September a crucial transitional month in Waterford's annual weather pattern.
As summer fades into autumn, September humidity in Waterford, Ireland remains notably high at 86%, mirroring the trend seen throughout the warmer months. This level of humidity is consistent with the readings from July and August, both also peaking at 86%. However, September marks the beginning of a gradual increase towards the year's highest points, as the humidity rises to 87% in October. Despite the slight dip seen in May, when humidity dropped to 83%, the overall picture reveals a steady, warm, and damp atmosphere characteristic of the region. This consistent moisture in the air not only highlights Waterford’s temperate climate but also sets the stage for the lush landscapes that define its picturesque scenery.
As September rolls in, Waterford, Ireland, experiences a moderate UV Index of 5, indicating a shift from the summer’s peak exposure levels. This trend sees a gradual decline from the very high readings of 8 in July and June, as well as high levels in May and August. With a burn time of 30 minutes, it's essential to remain mindful of sun protection during outdoor activities. This month sets the stage for a more cautious approach to sun exposure, making it ideal for enjoying the crisp autumn air without the intensity of summer rays. For more details on UV levels throughout the year, check out the Waterford UV Index.
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As September unfolds in Waterford, Ireland, the lingering warmth of summer is still palpable, offering 308 hours of sunshine—a remarkable amount for this time of year. This sun-drenched month follows a high point in summer, particularly July, which boasts an impressive 408 hours of sunlight. Interestingly, the daylight hours gradually decline as autumn approaches, with October dipping to 245 hours and a dramatic drop to just 135 hours in November. However, September stands out as a beautiful transitional month, allowing residents and visitors alike to enjoy the tail end of summer while the daylight hours still provide a generous embrace of sunlight before the darker days of winter settle in.
As September rolls in, the chances of sunny weather in Waterford, Ireland, dip to 23%, making it one of the less sunny months compared to the brighter days of late spring and early summer. After a peak in April at 48%, the likelihood of sunshine generally fluctuates, with months like May and July offering more favorable conditions at 35% and 34% respectively. However, the trend downward continues as fall approaches, with October and November presenting even lower probabilities of sun. This seasonal shift highlights the transition from the bright, vibrant days of summer to the increasingly overcast skies typical of autumn, leaving sun-seekers in Waterford yearning for those elusive sunny breaks before winter settles in.
As we transition into September in Waterford, Ireland, the length of daylight begins its subtle decline, offering approximately 12 hours of light each day. This marks a shift from the sun-drenched days of summer, where daylight peaked at 16 hours in June and July. While the days remain relatively generous compared to the winter months, there’s a noticeable retreat from the vibrancy of May's 15 hours and August's 14 hours. September serves as a gentle reminder of the approaching autumn, bridging the long, bright days of summer with the shorter, cozier days of fall, which will soon bring around 10 hours in October and dip further to 8 hours by November. The gradual ebb of daylight encourages a reflective transition, infusing the month with a unique charm as nature prepares for the seasonal shift.
September in Waterford, Ireland, brings a gentle breeze, with an average wind speed of 4.1 m/s (about 9 mph). This marks a distinct decline from the peak summer months, where July recorded the calmest winds at 3.7 m/s (8 mph) and August at 4.7 m/s (10 mph). As the year transitions towards autumn, the winds begin to pick up again, as seen in October, where speeds rise to 6.1 m/s (14 mph). The pattern highlights a clear seasonal shift—the summer's lighter air gives way to the more invigorating winds of fall, signaling nature’s transformation and inviting a brisk, refreshing atmosphere as the days shorten.
The weather in Waterford 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 Waterford and find detailed weather information for every month.
September and January in Waterford present two distinctly different weather profiles. September enjoys a milder climate, with average temperatures reaching 14°C (58°F) and maximum highs of 21°C (70°F), enticing the last days of summer. However, it experiences more significant rainfall, totaling 74 mm (2.9 in) over about 12 days, coupled with a high humidity level of 86%. In contrast, January is much colder, with average temperatures dropping to 7°C (45°F) and maximums of only 13°C (56°F). While January sees less precipitation at 61 mm (2.4 in) over the same number of days, it maintains a similar humidity level of 85%. For those seeking specifics about Waterford during the coldest month, you can check Waterford weather in January.
September and February exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 6°C (42°F) to a pleasant average of 14°C (58°F), peaking at 21°C (70°F). The month sees an average precipitation of 74 mm (2.9 in) over about 12 days, while the humidity remains consistently high at 86%.
In contrast, February experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of just 7°C (45°F), reaching a maximum of 13°C (56°F). This month has a higher precipitation level of 107 mm (4.2 in) spread over 16 days, maintaining the same high humidity at 86%. For a detailed look at February weather, check out Waterford weather in February.
September and March present notably different weather patterns. In September, temperatures typically range from a mild 6°C (42°F) to a pleasant 21°C (70°F), with an average of 14°C (58°F). The month sees around 74 mm (2.9 in) of precipitation spread over 12 days, while humidity remains relatively high at 86%. Conversely, March experiences colder conditions, with temperatures ranging from a minimum of -4°C (26°F) to a maximum of 13°C (56°F) and an average of only 7°C (46°F). With slightly higher precipitation at 89 mm (3.5 in) over 16 days, March also maintains the same humidity level of 86%. For more detailed information on conditions during this month, visit Waterford weather in March.
When comparing the weather in September and April, September tends to be milder and warmer. With average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 21°C (70°F), it enjoys a more comfortable climate, while April sees cooler averages with temperatures hitting a minimum of 1°C (34°F) and a maximum of 16°C (60°F). Precipitation is slightly higher in September, with 74 mm (2.9 in) spread over 12 days compared to April's 67 mm (2.6 in) over 11 days. Additionally, both months experience high humidity, with September at 86% and April slightly lower at 85%. For a more detailed overview of April's weather, you can visit Waterford weather in April.
When comparing the weather in September and May, September tends to be warmer with average temperatures reaching 14°C (58°F) and a maximum of 21°C (70°F), while May sees a cooler average of 11°C (52°F) with a maximum of only 18°C (65°F). Although both months experience a fair amount of precipitation, September receives a bit more, with 74 mm (2.9 in) over 12 days compared to May's 61 mm (2.4 in) over 10 days. Humidity levels are also slightly higher in September at 86%, compared to 83% in May. For a more in-depth look at May weather specifically, you can check this link: Waterford weather in May.
In comparing the weather in September and June, both months exhibit similar average temperatures, with September showing a slight range from a minimum of 6°C to a maximum of 21°C, while June ranges from a minimum of 8°C to a maximum of 22°C. Precipitation levels are fairly close, with September receiving 74 mm over 12 days, slightly more than June’s 71 mm spread across 11 days. Humidity is also comparable, with September at 86% and June at 85%. However, September tends to be cooler overall, while June may offer a slightly warmer experience. For more information about June weather in Waterford, you can check Waterford weather in June.
When comparing the weather in September and July, it's clear that both months share similar humidity levels at 86%, but they differ notably in temperature and precipitation. September experiences a broader temperature range with a minimum of 6°C (42°F) and a maximum of 21°C (70°F), averaging around 14°C (58°F). In contrast, July is slightly warmer, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (72°F), resulting in an average temperature of 16°C (61°F). Additionally, September sees more precipitation, averaging 74 mm (2.9 in) over 12 days, compared to July's 62 mm (2.4 in) over 11 days. For a closer look at what to expect, check out Waterford weather in July.
In comparing the weather between August and September, we see a notable shift in temperatures and precipitation. While both months have a maximum temperature of 21°C (70°F), September's average temperature is slightly cooler at 14°C (58°F) compared to August's 16°C (60°F). Additionally, September features a lower minimum temperature of 6°C (42°F) versus August's 9°C (48°F). Precipitation also decreases from 93 mm (3.7 in) in August to 74 mm (2.9 in) in September, despite both months experiencing rainfall on approximately 12 days. Humidity remains relatively stable, being slightly higher in September at 86% compared to August's 85%. For more details on August weather, visit Waterford weather in August.
In September, the weather features milder temperatures with minimums around 6°C (42°F) and maximums peaking at 21°C (70°F), offering an average of 14°C (58°F). The month experiences some precipitation, totaling 74 mm (2.9 in) over approximately 12 days, accompanied by a high humidity of 86%. In contrast, October brings cooler conditions with minimum temperatures dropping to 4°C (39°F) and an average temperature of 12°C (53°F). The maximum temperature reaches only 18°C (64°F). Additionally, October sees increased rainfall, with 110 mm (4.3 in) spread over 16 days, and slightly higher humidity at 87%. For more detailed weather information, check out Waterford weather in October.
September generally presents warmer temperatures compared to November, with average highs of 21°C (70°F) and lows of 6°C (42°F), making it a more pleasant month for outdoor activities. In contrast, November sees a drop in temperatures, averaging 9°C (49°F), with maximums only reaching 15°C (59°F) and minimums falling to 2°C (36°F). Additionally, November is characterized by increased precipitation, totaling 125 mm (4.9 in) over 17 days, compared to September's 74 mm (2.9 in) over 12 days. Humidity remains consistent in both months at 86%, contributing to a damp feel in the late autumn air. For more details about the weather in November, check out Waterford weather in November.
September weather is generally milder and more temperate, with average temperatures around 14°C (58°F) and highs reaching up to 21°C (70°F). The month experiences significant rainfall, with about 74 mm (2.9 inches) over approximately 12 days, contributing to a relatively high humidity level of 86%. In contrast, December brings a notable drop in temperatures, with an average of 8°C (47°F) and highs only reaching 13°C (56°F). The precipitation increases to 126 mm (5.0 inches) over about 15 days, while humidity remains slightly lower at 84%. For more details on December weather, check out Waterford weather in December.
As September arrives in Waterford, the weather begins to transition from the warmth of summer to cooler autumnal days. With an average temperature hovering around a mild 14°C, you can expect pleasantly cool mornings and evenings, contrasting sharply with the heat of July and August. However, this month is often marked by increased humidity and a significant amount of rainfall, with precipitation occurring on about half the days, making it one of the wetter months of the year. While the season gently shifts, the fluctuating weather reminds us that it's time to prepare for the more unpredictable days ahead. For a deeper understanding of what to expect throughout the year, check out Waterford Climate.