Last updated: March 17, 2025
In September, Crosshaven, Ireland, experiences a mild maritime climate characterized by an average temperature of 15°C (58°F), peaking at 21°C (70°F) during warmer days, while dipping to a cooler 8°C (47°F) at night. This month typically sees about 67 mm (2.6 in) of rainfall spread over 11 days, contributing to the region's lush landscape. With humidity levels averaging around 85%, the air remains notably fresh and invigorating, making September a delightful time to explore the charming coastal scenery of Crosshaven.
As September arrives in Crosshaven, Ireland, the temperatures showcase a delightful transition from the warm summer months. The minimum temperature settles at a mild 8°C (47°F), while the average nudges upward to 15°C (58°F), providing a comfortable backdrop for outdoor activities. With maximum highs reaching 21°C (70°F), residents and visitors alike can still bask in pleasant weather before autumn sets in. This month marks a gentle decline from the summer warmth, but the lingering mildness makes it an ideal time to explore the beautiful coastal scenery and vibrant local culture. As the days gradually shorten and leaves start to hint at autumn's arrival, September offers a perfect blend of warmth and early seasonal changes in Crosshaven.
September in Crosshaven, Ireland, showcases a moderate precipitation pattern, with an average of 67 mm (2.6 in) over 11 days of rain. This amount sits comfortably between the drier summer months and the wetter spell that follows in October, which averages 95 mm (3.7 in). As summer bids farewell, September presents a shift towards increased moisture, yet remains significantly lighter than the often rain-soaked winter months that follow. The transition is evident as the rainfall intensity begins to creep upwards, hinting at the approaching seasonal changes, but September still allows a taste of the lingering warmth of summer amidst the gentle showers.
In September, the humidity in Crosshaven, Ireland reaches 85%, maintaining the higher end of the year’s humidity spectrum. Notably, this month experiences a slight uptick compared to the preceding months, reflecting a trend of stable moisture levels that begins in late spring. The consistency in humidity from April onward, hovering around the mid-80s, hints at the maritime climate's influence, which keeps the air feeling relatively damp throughout much of the year. As we transition into the chillier months, October sees a further rise to 86%, suggesting that the cozy, humid embrace of early autumn is on the horizon, setting the stage for the overall atmospheric patterns that characterize this charming Irish locale.
As we delve into the September UV Index in Crosshaven, Ireland, the data reveals a shift towards moderate sun exposure, with a UV Index of 5—a notable decrease from the very high levels experienced during the peak summer months of June and July. With a burn time of approximately 30 minutes, it's essential to remain mindful of sun safety during this transitional month. This trend aligns with the downward slope of UV levels leading into autumn, as the days grow shorter and the sun's intensity wanes. Overall, September offers a pleasant balance, where one can still enjoy the outdoors while taking necessary precautions. For more detailed insights on UV levels throughout the year, visit the Crosshaven UV Index.
UV Risk Categories
September in Crosshaven, Ireland, offers a delightful continuation of summer's warmth, boasting 305 hours of sunshine. This month typically showcases the beauty of autumn as it balances the vibrant hues of late bloomers with pleasantly warm days. Following a peak in summer, where July shines with an impressive 407 hours, September marks a gentle decline in sunlight as the days grow shorter, transitioning smoothly into October’s 240 hours. Yet, with more sunshine than any earlier months save for August, September remains a crucial gateway month, inviting residents and visitors alike to savor the lingering warmth before the chill of winter sets in. This trend underscores the unique charm of coastal living, where the seasons impressively intertwine.
In Crosshaven, Ireland, September presents a modest 23% chance of sunny weather, marking a dip from the summer months that typically offer better odds for sunshine. This trend mirrors the decreasing likelihood of sun seen from April’s peak at 48%, highlighting how the arrival of autumn tends to usher in cloudier skies. As the year progresses, the chances of clear, sunny days tend to fluctuate, with September concluding the summer’s warmth and offering a transition toward the cooler and often more overcast conditions of October and November. Thus, while it might not be the most promising month for sun-seekers, September still holds the remnants of summer's charm, albeit with a bit more unpredictability.
As summer wanes and autumn approaches, September in Crosshaven, Ireland, showcases a gentle transition in daylight. With 12 hours of sunlight, this month sees a slight decline from the peak of 16 hours in June and July. The rhythmic ebb and flow of daylight is evident, as the days begin to shorten, following a vibrant summer filled with abundance. This gradual decrease aligns with the pattern of the seasonal shift, where September marks a harmonious balance between the lingering warmth of late summer and the impending coolness of fall, paving the way for October's further reduction to 10 hours. Embracing the changing light, Crosshaven prepares for cozy evenings, transforming the landscape with rich autumn hues.
As September rolls into Crosshaven, Ireland, the wind begins to mellow, with an average speed of 4.5 m/s (10 mph). This subtle shift marks a continuation of the summer's gentle breezes, tapering off from the higher gusts of February, which peaked at 8.0 m/s (18 mph). After the fair winds of spring and the warm, calm days of summer, September's winds feel comforting yet invigorating, setting the stage for autumn's arrival. The trend shows a gradual decline throughout the summer months, with wind speeds steadily decreasing from the early year's highs, hinting at the transition to the more blustery conditions awaiting in October and November, where speeds increase again. In this dynamic rhythm, September acts as a gentle bridge, inviting residents and visitors alike to embrace the last whispers of summer before the winds of change pick up once more.
The weather in Crosshaven 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 Crosshaven and find detailed weather information for every month.
In September, the weather tends to be milder, with average temperatures around 15°C (58°F) and a maximum of 21°C (70°F), creating a pleasant atmosphere for outdoor activities. The month sees approximately 67 mm (2.6 in) of precipitation over 11 days, with high humidity levels of 85%. In contrast, January experiences cooler temperatures, with an average of 8°C (46°F) and a maximum of only 13°C (56°F). Precipitation in January is somewhat less, at 57 mm (2.2 in) over 10 days, and the humidity remains similarly high at 83%. For those interested in specific weather conditions in January, you can find more details here: Crosshaven weather in January.
In comparing the weather between September and February, one can observe notable differences in temperature and precipitation patterns. September typically offers milder temperatures, with minimums around 8°C (47°F) and maximums reaching 21°C (70°F), while February is considerably cooler, with temperatures ranging from 1°C (33°F) to a maximum of 13°C (56°F). Precipitation is also more frequent in February, seeing about 100 mm (3.9 in) over 15 days compared to September's 67 mm (2.6 in) across 11 days. Interestingly, both months share the same humidity level at 85%, creating a damp feel in the air year-round. For a closer look at February's weather specifics, check out Crosshaven weather in February.
In comparing the weather between September and March, notable contrasts emerge. September often enjoys milder temperatures, with an average of 15°C (58°F) and a high of 21°C (70°F), whereas March is typically cooler, averaging only 8°C (46°F) with a maximum of 13°C (56°F). Precipitation levels are somewhat similar, with September experiencing 67 mm (2.6 in) over 11 days and March slightly higher at 80 mm (3.2 in) over 14 days. Both months maintain high humidity levels, hovering around 85% in September and 84% in March. For a more detailed look at the March weather specifically, visit Crosshaven weather in March.
In September, the weather is generally warmer than in April, with average temperatures reaching 15°C (58°F), compared to April's average of only 9°C (49°F). September sees minimum temperatures of 8°C (47°F) against April's chillier 2°C (35°F), creating a more pleasant atmosphere for outdoor activities. Both months experience similar levels of precipitation, with September recording 67 mm over 11 days and April registering 65 mm over 10 days. Humidity levels are comparable, with September at 85% and April slightly lower at 84%. For more detailed information about April weather, you can visit Crosshaven weather in April.
In comparing the weather of September and May, we notice some subtle differences. September typically presents slightly warmer conditions, with average temperatures ranging from a minimum of 8°C to a maximum of 21°C, while May has slightly cooler averages with temperatures ranging from 5°C to 19°C. Both months experience similar levels of precipitation, with September recording 67 mm and May close behind at 65 mm, each typically seeing around 11 days of rain. Humidity levels are also comparable, with September at 85% and May at 84%. For those looking to explore the weather specifics in May, you can check out Crosshaven weather in May.
When comparing the weather in September to that in June, both months exhibit similar temperature ranges, with September experiencing a slightly higher average temperature of 15°C (58°F) compared to June’s 14°C (58°F). Both months have the same maximum temperature of 21°C (70°F), indicating comfortable warm days. However, September sees more rainfall, with 67 mm (2.6 in) of precipitation over 11 days, while June has less, with 52 mm (2.0 in) over 9 days. Interestingly, both months share the same humidity level of 85%, creating a similar feel in the air throughout. For a more detailed look at the June weather, you can visit Crosshaven weather in June.
In comparing the weather between September and July, September tends to be slightly cooler, with minimum temperatures dropping to 8°C (47°F), while July starts at a minimum of 11°C (51°F). The average temperature in September is around 15°C (58°F), slightly below July's 16°C (62°F), though the maximum temperatures are quite similar, with September reaching up to 21°C (70°F) and July peaking at 22°C (73°F). Interestingly, both months experience precipitation on 11 days, but September sees a bit more rain overall, totaling 67 mm (2.6 in) compared to July's 56 mm (2.2 in). Humidity is consistent between the months, remaining at 85%. For more detailed insights, check out Crosshaven weather in July.
In August, temperatures range from a minimum of 10°C (51°F) to a maximum of 22°C (71°F), with an average of 16°C (61°F). The month sees a bit more precipitation, totaling 78 mm (3.1 in) over 12 days and maintaining a humidity level of 84%. In contrast, September experiences slightly cooler temperatures, with a minimum of 8°C (47°F), an average of 15°C (58°F), and a maximum of 21°C (70°F). Although September has less total rainfall at 67 mm (2.6 in) spread over 11 days, it retains a high humidity of 85%. For more detailed weather information, you can visit Crosshaven weather in August.
In September, the weather tends to be milder, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 21°C (70°F) and an overall average of 15°C (58°F). The month sees about 67 mm (2.6 in) of precipitation spread over 11 days, with humidity levels around 85%. In contrast, October brings cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 18°C (65°F), averaging 12°C (54°F). This month also experiences an increase in rainfall, totaling 95 mm (3.7 in) over 14 days, accompanied by slightly higher humidity at 86%. For a closer look at the weather specifics, you can visit Crosshaven weather in October.
September and November exhibit notable differences in weather patterns. September experiences milder temperatures, with an average of 15°C (58°F) ranging from a minimum of 8°C (47°F) to a maximum of 21°C (70°F). In contrast, November sees a cooler average of 10°C (50°F), with temperatures dropping to 3°C (39°F) and peaking at 15°C (59°F). Precipitation is also higher in November, totaling 88 mm (3.5 in) over 14 days, compared to September's 67 mm (2.6 in) over 11 days. Despite the increased rainfall in November, humidity remains relatively consistent, at 84%. For those looking for specific weather details, Crosshaven weather in November provides comprehensive insights.
September and December exhibit notable differences in weather patterns. September enjoys milder temperatures, with averages around 15°C (58°F) and highs reaching 21°C (70°F), while December sees cooler conditions, averaging only 9°C (48°F) with maximums of 14°C (57°F). In terms of precipitation, December is wetter, with 106 mm (4.2 in) falling over 17 days compared to September's 67 mm (2.6 in) across 11 days. Despite the slight drop in humidity between the two months, with September at 85% and December at 83%, both months are characterized by dampness, with December often feeling much chillier. For those interested in more detailed information, check out Crosshaven weather in December.
As September unfolds in Crosshaven, it heralds a transition from the bustling warmth of summer to the cooler embrace of autumn. With an average temperature hovering around a mild 15°C (58°F), this month offers a comfortable respite, yet it's accompanied by a noticeable increase in humidity and precipitation. Unlike the drier summer months, September brings an average of 11 days of rain, contributing to a lush landscape. This shift in weather provides a unique charm to Crosshaven, making it an ideal time for those who appreciate the vibrant beauty of the changing seasons. For a deeper insight into how September fits into the broader climate picture, check out Crosshaven Climate.