Last updated: March 17, 2025
In Maynooth, Ireland, September brings a mix of temperate weather and refreshing rain, perfect for those looking to experience the lush landscape. With maximum temperatures reaching 23°C (74°F) and averages settling around 14°C (57°F)*, this month strikes a balance between warmth and cool breezes. Although the minimum temperatures can dip to 2°C (37°F), the overall climate is characterized by a relatively high humidity level of 86%, creating a mildly invigorating atmosphere. September also sees an average precipitation of 67 mm (2.6 in) spread over roughly 13 days, ensuring that the region remains vibrant and green as summer fades into autumn.
In Maynooth, Ireland, September offers a delightful transition from summer to autumn, with temperatures reflecting this change. The month starts with a minimum of 2°C (37°F), providing a crispness in the air that's invigorating after the warmer months. On average, you can expect comfortable daytime highs around 14°C (57°F), peaking at 23°C (74°F) on sunnier days. This month showcases a notable shift as the warmth from summer fades, yet still offers pleasant afternoons, making it a lovely time for outdoor activities or exploring the charming surroundings of Maynooth. Overall, September balances cooler nights with mild days, hinting at the seasonal changes ahead.
In September, Maynooth experiences a noteworthy shift in weather, with an average precipitation of 67 mm (2.6 in) spread over approximately 13 days. This marks a slight increase from the driest summer months, as August often sees the highest rainfall. Following the pattern of late summer, September's precipitation reflects the transition into autumn, where the combination of lingering warmth and increasing atmospheric moisture typically leads to more frequent rain. While the rainfall is not as extensive as in the later months of the year, it sets the stage for a wetter October and November, which tend to bring heavier downpours. Overall, September serves as a gentle yet significant reminder of the changing seasons in Ireland's lush landscape.
September in Maynooth, Ireland, experiences a noticeable increase in humidity, reaching 86%—a level consistent with the summer months. This trend reflects a general pattern where humidity in the region tends to remain high throughout the year, particularly from February to October. Interestingly, the moisture levels peak slightly as autumn approaches, before gradually descending into the cooler months. Overall, September's humidity aligns with the overall climate narrative of Maynooth, where the comfortably moist air lingers, especially as the year transitions towards winter.
In September, Maynooth experiences a moderate UV Index of 5, with a burn time of 30 minutes. This marks a transition from the high UV levels of the summer months, where June and July reached peaks of 8, requiring greater caution with sun exposure. As autumn begins to set in, UV levels dip to a more manageable rate, comparable to the early spring months of March and April. While sun protection remains important, the moderate level signifies a gradual decline in sun intensity, making September a lovely time to enjoy outdoor activities with mindful sun safety. For a more detailed understanding of UV levels throughout the year, visit Maynooth UV Index.
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As we bask in the September sunshine of Maynooth, Ireland, it’s evident that the warmth of summer lingers a bit longer before the autumn chill sets in. Reflecting on the year’s trajectory, we observe a remarkable ascent in daylight hours from a mere 80 hours in January to a dazzling 385 hours in May. Following this peak, the trend gradually shifts, as June and July offer robust sunlight, just slightly tapering off into August with 329 hours. In September, the sunshine retains its charm with 288 hours, marking a significant decline from summer yet still well above the dreary months that follow. As the days shorten toward winter, October and November drop to 226 and 114 hours, respectively, highlighting the seasonal dance of light we eagerly anticipate each year. The vibrant fluctuations in sunlight serve as a reminder of nature's cycle, encouraging us to embrace every sunlit moment while it lasts.
In Maynooth, Ireland, September brings a modest 20% chance of sunny weather, reflecting a gradual decline in sunshine as summer gives way to autumn. This trend is consistent with the decreasing probability of sunny days observed from the brighter 41% in April to 32% in May, before tapering off into the cooler months. Compared to the summer peak months, with July and August holding slightly higher chances of sun at 28% and 22%, September's sunshine is less frequent, setting a tone of gentle transition rather than exuberant brightness. As the year progresses into autumn, it’s a reminder that while sunny days may wane, the charm of Maynooth’s changing season remains.
In September, Maynooth, Ireland, experiences a noticeable transition as daylight begins to fade, offering around 12 hours of light—a drop from the 14 hours enjoyed in August. This gradual decrease marks the onset of autumn, contrasting sharply with the intensity of summer's 16-hour days in June and July. As the year progresses, daylight continues to diminish, with October seeing just 10 hours, further emphasizing the shifting seasons. The trend illustrates how quickly the vibrant longer days of summer give way to shorter, cozier evenings as the days turn toward winter's depths.
In Maynooth, Ireland, the winds of September carry a gentle whisper, averaging a modest 3.3 m/s (7 mph). This breezy month marks a transition from the warmer, calmer days of summer, where July recorded the minimum wind speed of 2.6 m/s (6 mph), to the more blustery autumn months ahead. Interestingly, September's winds align closely with those of August, suggesting a waning summer harmony as nature prepares for the invigorating gusts of October and November, both at 4.3 m/s (10 mph). This trend highlights the gradual intensification of wind speeds as the seasons change, inviting both locals and visitors to embrace the refreshing autumn air that defines this charming town.
The weather in Maynooth 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 Maynooth and find detailed weather information for every month.
In September, the weather typically showcases a more moderate climate, with average temperatures ranging from a mild 14°C (57°F) to warm highs of 23°C (74°F). The month experiences 67 mm (2.6 in) of rainfall over about 13 days, accompanied by a humidity level of 86%. In contrast, January presents a stark shift, with an average temperature of 6°C (43°F) and a maximum of only 14°C (58°F), while the minimum can drop to a chilly -5°C (24°F). Although January sees slightly less precipitation at 50 mm (2.0 in) over 10 days, the humidity remains high at 85%. For a deeper insight into January's weather specifics, you can refer to Maynooth weather in January.
In comparing the weather of September and February, we see notable differences in temperature and overall conditions. September typically enjoys milder temperatures, with an average of 14°C (57°F) and highs reaching up to 23°C (74°F), while February is cooler, with an average of 6°C (44°F) and maximums only reaching 16°C (61°F). Despite being the tail end of summer, September also has a slightly lower precipitation level at 67 mm (2.6 in) over about 13 days, compared to February’s 74 mm (2.9 in) over 14 days. Interestingly, both months share the same humidity level of 86%, contributing to a consistently damp atmosphere, particularly during the winter. For specific insights into February's weather conditions, you can explore Maynooth weather in February.
In comparing the weather between September and March, notable differences emerge in both temperature and precipitation. September offers a more moderate climate with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 23°C (74°F) and an average of 14°C (57°F). In contrast, March experiences cooler temperatures, with a minimum of -4°C (24°F), an average of 7°C (45°F), and a maximum of 17°C (63°F). While both months share similar humidity levels of 86%, March sees slightly more precipitation at 74 mm (2.9 in) over 16 days compared to September's 67 mm (2.6 in) over 13 days. For those interested in a more detailed look at March weather, you can visit Maynooth weather in March.
When comparing the weather in September and April, September tends to be warmer, with average temperatures around 14°C (57°F), whereas April has a cooler average of about 9°C (48°F). In September, temperatures can peak at 23°C (74°F), while April's maximum is slightly lower at 21°C (70°F). Precipitation levels are higher in September, reaching 67 mm (2.6 in) over 13 days, compared to April's 45 mm (1.8 in) over 10 days. The humidity is relatively similar, with September at 86% and April at 85%. For a more detailed look at April's weather, you can visit Maynooth weather in April.
In comparing the weather of September and May, September generally offers a warmer experience, with average temperatures around 14°C (57°F) and a maximum reaching 23°C (74°F), while May's temperatures hover slightly lower at an average of 12°C (53°F), peaking at 24°C (75°F). However, May starts off with chillier nights, featuring a minimum of -1°C (31°F), compared to September's milder minimum of 2°C (37°F). Precipitation levels are relatively similar, with September receiving 67 mm (2.6 in) over 13 days and May slightly less with 64 mm (2.5 in) over 12 days. Humidity also remains high in both months, but is marginally lower in May at 83% compared to September’s 86%. For more details on May weather, you can visit Maynooth weather in May.
When comparing the weather of September to that of June, several notable differences emerge. September features cooler temperatures, with a minimum of 2°C (37°F) and a maximum of 23°C (74°F), while June sees temperatures ranging from a minimum of 6°C (42°F) to a maximum of 27°C (81°F). Both months experience similar levels of precipitation, approximately 67 mm (2.6 in) in September and 70 mm (2.8 in) in June, with rainfall occurring on about 13 days in both months. Interestingly, humidity levels are quite comparable, hovering around 86% in September and 85% in June. For more specific weather details, you can check out Maynooth weather in June.
When comparing the weather in September to that of July, we notice a shift towards cooler temperatures and slightly increased precipitation. September experiences minimum temperatures around 2°C (37°F), with an average of 14°C (57°F) and a maximum of 23°C (74°F), while July maintains a warmer range with minimums at 7°C (45°F), an average of 16°C (62°F), and highs reaching 28°C (83°F). Both months display similar humidity levels at 86%, but September has a slightly higher total precipitation of 67 mm (2.6 in) over 13 days compared to July's 71 mm (2.8 in) over 12 days. For a closer look at July's weather specifics, check out Maynooth weather in July.
In comparing the weather of September and August, September tends to be slightly cooler, with a minimum temperature of 2°C (37°F) compared to August's minimum of 7°C (45°F). Although the average temperatures in both months are close, September has an average of 14°C (57°F) while August is slightly warmer at 16°C (60°F). Precipitation also differs; September sees 67 mm (2.6 in) of rain over 13 days, whereas August has a higher total of 94 mm (3.7 in) spread over 17 days. In terms of humidity, both months are quite high, with September at 86% and August at 85%. For more detailed information, you can check Maynooth weather in August.
September and October present a noticeable shift in weather patterns. September typically boasts milder temperatures, with an average of 14°C (57°F) and highs reaching up to 23°C (74°F). In comparison, October sees a decline in warmth, with average temperatures dropping to 11°C (52°F) and maximums of only 20°C (68°F). Additionally, both months experience comparable levels of precipitation, with September receiving 67 mm (2.6 in) and October slightly higher at 75 mm (3.0 in), each with precipitation on 13 days. Humidity in October remains slightly elevated at 87%, just above September's 86%. For more detailed weather insights, you can check Maynooth weather in October.
In September, temperatures in Maynooth range from a minimum of 2°C (37°F) to a maximum of 23°C (74°F), with an average of 14°C (57°F). The month experiences around 67 mm (2.6 in) of precipitation over 13 days and maintains a high humidity level of 86%. In contrast, November sees colder temperatures, with minimums dropping to -2°C (29°F) and an average of 8°C (47°F). The maximum temperature in November reaches only 15°C (60°F), while precipitation increases slightly to 84 mm (3.3 in), also spread across 13 days. Despite these changes, humidity remains consistent at 86%. For a deeper look into November weather specifics, check out Maynooth weather in November.
September and December present quite different weather patterns. In September, temperatures range from a minimum of 2°C (37°F) to a maximum of 23°C (74°F), with an average of 14°C (57°F). This month sees a moderate precipitation of 67 mm (2.6 in) over approximately 13 days and maintains a high humidity of 86%. In contrast, December brings a chillier climate, with temperatures dropping to a minimum of -3°C (27°F) and a maximum of 13°C (56°F), averaging 7°C (44°F). The precipitation in December increases slightly to 83 mm (3.3 in) over 14 days, while humidity remains relatively high at 84%. For more details on the weather during this month, you can check Maynooth weather in December.
As September arrives in Maynooth, the weather showcases a delightful transition from the warmth of summer to the cooler embrace of autumn. With average temperatures lingering around a comfortable 14°C and maximums reaching up to 23°C, it's a month that offers a pleasant outdoor experience. However, September also introduces an increase in precipitation, with rainfall occurring on about 13 days, adding a touch of moisture to the landscape. The high humidity levels, averaging 86%, create a unique atmosphere that enhances the vibrant autumn foliage. This month stands out from others, bridging the gap between seasons and inviting a mix of sunny days and cozy, rain-kissed moments. For more insights into the climate specifics of Maynooth, check out Maynooth Climate.