Last updated: March 17, 2025
Experience the vibrant September weather of Newcastle, Ireland, where temperatures exhibit a delightful range. With a maximum of 24°C (76°F) and a crisp minimum of 2°C (35°F), the month offers a comfortable average of 13°C (56°F). However, prepare for occasional rainfall, as 68 mm (2.7 in) of precipitation graces 13 days this month, contributing to the region's lush greenery. The humidity remains higher at 86%, enriching the air with a refreshing coastal feel, making September an intriguing time to explore the scenic beauty of Newcastle.
As September unfolds in Newcastle, Ireland, temperatures begin to show a hint of autumn's arrival, transitioning from the warmth of summer. The month starts with a minimum of 2°C (35°F), an inviting start but noticeably cooler than the preceding months. The average temperature settles around 13°C (56°F), offering a pleasant, mild climate perfect for outdoor activities. During the day, highs reach up to 24°C (76°F), allowing for some late-season warmth before the chill of October sets in. This month serves as a bridge, where the remnants of summer linger in the daytime sun while hints of the crisp autumn air begin to emerge in the evenings, making it an ideal time to enjoy Newcastle's scenic landscapes.
September in Newcastle, Ireland, brings a moderate shift in the weather, with precipitation totaling 68 mm (2.7 in) over 13 days. This marks a slight decrease from the wetter conditions of August, which recorded 94 mm (3.7 in) over 17 days. As summer transitions into autumn, the rainfall begins to stabilize, setting the stage for the upcoming months. Interestingly, while September showcases less rain compared to its predecessor, it still holds a respectable position in the precipitation trend, reflecting the region's characteristic blend of dampness and changing seasons. With October looming ahead, a notable uptick in rainfall is expected, with averages climbing back up to 82 mm (3.2 in), hinting at a return to the typical Irish autumn.
In September, Newcastle experiences a notable increase in humidity, reaching 86%, which aligns with the trend observed throughout the summer months. This peak in humidity is consistent with the preceding months of July and August, both recording the same level. As the year progresses into the autumn months, humidity levels show a slight upward trajectory, culminating in October's expected rise to 87%. Overall, these levels reflect the region's characteristic dampness, creating a rich, lush landscape while hinting at the gradual shift towards the wetter conditions typical of fall.
As summer wanes in September, Newcastle experiences a noticeable shift in the UV Index, dropping to 5, which falls into the moderate exposure category. This indicates that while the risk of harm from unprotected sun exposure increases, it's manageable with appropriate precautions. With a burn time of just 30 minutes, it's essential to plan outdoor activities wisely. Compared to the intensity of June and July, where UV exposure reached very high levels, September offers a gentler reminder of the sun's power. As autumn approaches, the trend shows a steady decrease in UV levels, signaling the importance of staying informed about sun safety. For more detailed information, you can visit the Newcastle UV Index.
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September in Newcastle, Ireland, enjoys a delightful 294 hours of sunshine, marking a transition from the summer solstice but still basking in the warmth of late summer. The month sees a gradual decline in sunlight compared to the vibrant days of July and August, which both boast 385 and 339 hours respectively. However, with nearly 300 hours of sunshine, September offers a comforting glow that invites outdoor exploration before the crisp embrace of autumn settles in. This lingering summer sun not only enhances the beauty of the landscape but also highlights the gradual shift towards shorter days, as we prepare for the cooler months ahead.
In Newcastle, Ireland, September marks a transition as the summer heat wanes, bringing a slightly lowered chance of sunshine compared to the peak months. With a mere 19% likelihood of sunny weather, this month stands out as one of the cloudier times of the year, just slightly above the damp embrace of October at 18%. The pattern suggests that as the year progresses, particularly after the sunnier days of mid-spring and early summer, the prospects for clear skies diminish. By September, locals and visitors alike should prepare for a mix of cloud cover and occasional sun, embracing the cozy essence of early autumn rather than relying on uninterrupted sunny days.
As September rolls into Newcastle, Ireland, the days begin to shorten, marking a gentle transition from summer’s vibrant light to the quieter tones of autumn. With about 12 hours of daylight, this month sits comfortably between the sun-drenched heights of summer, which boasts 16 hours, and the brisk, darker days of October, which only offer 10 hours. This gradual decrease in daylight emphasizes the shifting seasons, as nature prepares for the upcoming chill. The cooler air and dimming light in September invite a reflection on the year’s passage, creating a perfect backdrop for cozy evenings and the rich hues of fall foliage.
In September, the winds in Newcastle, Ireland, begin to shift as summer gives way to the crispness of autumn. With an average speed of 3.1 m/s (7 mph), September marks a subtle decline from the breezier summer months, where July saw the lowest gusts at 2.6 m/s (6 mph). This transitional period is characterized by gentle breezes, offering a serene atmosphere ideal for leisurely walks along the coast. As the month progresses, the winds start to pick up again, paving the way for stronger gales in October, which averaged 4.3 m/s (10 mph). This trend signifies the natural ebb and flow of the seasons, where the soothing winds of September herald the onset of the vibrant winds of autumn.
The weather in Newcastle 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 Newcastle and find detailed weather information for every month.
September and January present quite contrasting weather conditions. In September, temperatures range from a mild 2°C (35°F) at night to a pleasant 24°C (76°F) during the day, accompanied by significantly higher humidity levels of 86%. With an average precipitation of 68 mm (2.7 in) over 13 days, September can be quite wet. In contrast, January experiences a chillier climate, where temperatures drop to a minimum of -5°C (24°F) and peak at 13°C (56°F). Despite being cooler, the month sees less rainfall, with 55 mm (2.2 in) spread over 10 days and humidity slightly lower at 85%. For more detailed insights, you can check Newcastle weather in January.
September and February present contrasting weather profiles. In September, temperatures range from a pleasant 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 sees about 68 mm (2.7 in) of precipitation over 13 days, maintaining a consistent humidity level of 86%. In contrast, February offers cooler conditions, with a minimum of -3°C (27°F) and a maximum of 16°C (60°F), resulting in a lower average temperature of 6°C (43°F). This month experiences slightly more rainfall at 79 mm (3.1 in) over 15 days, while humidity remains steady at 86%. For a deeper understanding of February weather, you can explore Newcastle weather in February.
September and March present quite different weather patterns. In September, temperatures typically range from a mild 2°C (35°F) at night to a comfortable average of 13°C (56°F), peaking at a warm 24°C (76°F) during the day. The month experiences around 68 mm (2.7 in) of precipitation over approximately 13 days, all while maintaining a high humidity of 86%. In contrast, March is noticeably colder, with nighttime lows reaching -6°C (22°F) and average temperatures around 7°C (44°F). Daytime highs can reach up to 17°C (63°F), but it is generally wetter, with precipitation totaling 81 mm (3.2 in) over about 16 days, yet the humidity remains the same at 86%. For more detailed insights on March weather, you can visit Newcastle weather in March.
In comparing the weather of September and April, September typically boasts warmer temperatures, with a minimum of 2°C (35°F) and an average of 13°C (56°F), peaking at a comfortable 24°C (76°F). In contrast, April starts off chillier, with minimum temperatures dipping to -3°C (27°F) and an average of 8°C (47°F), though it can reach a maximum of 21°C (69°F). Precipitation in September is slightly higher at 68 mm (2.7 in) over about 13 days, compared to April's 51 mm (2.0 in) across 11 days, indicating a slightly wetter month overall. Both months experience similar humidity levels, around 85-86%. For more insights on April weather, you can check Newcastle weather in April.
In comparing the weather of September and May, both months have their unique characteristics. September tends to be slightly warmer, with average temperatures hovering around 13°C (56°F) and maximums reaching up to 24°C (76°F), while May displays a lower average of 11°C (53°F) with highs up to 23°C (74°F). Interestingly, both months experience similar levels of precipitation, with September recording 68 mm (2.7 in) and May slightly higher at 72 mm (2.8 in), each with about 13 days of rain. Humidity levels are also comparable, with September at 86% and May slightly lower at 83%, creating a rich and moist atmosphere during both periods. For a detailed look at the weather in May, check out Newcastle weather in May.
In comparing the weather of September and June, we see some notable differences. September tends to be slightly cooler, with average temperatures ranging from a minimum of 2°C (35°F) to a maximum of 24°C (76°F), while June offers warmer temperatures, with a minimum of 5°C (41°F) and a maximum of 27°C (80°F). Despite June having slightly higher average temperatures, the precipitation levels are relatively close, with September receiving 68 mm (2.7 in) over 13 days and June experiencing 73 mm (2.9 in) over 14 days. Humidity levels are quite similar too, with September at 86% and June at 85%. For more details specifically about June weather, you can visit Newcastle weather in June.
In comparing the weather of September and July, September tends to be cooler with a minimum temperature of 2°C (35°F) and an average of 13°C (56°F), while in July, the minimum rises to 7°C (44°F) with an average of 16°C (61°F). July also experiences warmer maximum temperatures, reaching up to 27°C (81°F), compared to September's high of 24°C (76°F). Precipitation levels are slightly higher in July at 77 mm (3.0 in) compared to September's 68 mm (2.7 in), with both months recording rainfall on 13 days. Notably, the humidity remains consistent at 86% for both months. For more detailed information, you can check Newcastle weather in July.
In September, temperatures typically 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), making it slightly cooler than August. During August, temperatures are a bit warmer, with minimums of 6°C (43°F) and the same maximum of 24°C (75°F), leading to an average of 15°C (60°F). Both months experience considerable precipitation, but September has 68 mm (2.7 in) over 13 days, while August sees higher levels at 94 mm (3.7 in) across 17 days. Humidity remains similar, with September at 86% and August at 85%. For more details on August weather, you can check Newcastle weather in August.
September generally offers milder weather compared to October, with average temperatures ranging from a minimum of 2°C (35°F) to a maximum of 24°C (76°F). In contrast, October sees cooler temperatures, with averages dropping to a minimum of 0°C (32°F) and a maximum of 19°C (67°F). Both months experience a similar number of rainy days, with precipitation slightly higher in October at 82 mm (3.2 in) compared to September's 68 mm (2.7 in). Humidity levels remain fairly constant, with September at 86% and October just slightly higher at 87%. For more detailed information on October weather, you can check Newcastle weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures typically 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 sees around 68 mm (2.7 in) of precipitation over 13 days, maintaining a high humidity level of 86%. In contrast, November experiences cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 15°C (59°F), averaging just 7°C (46°F). Precipitation increases slightly to 88 mm (3.5 in) over 14 days, while humidity remains consistent at 86%. For more specific details about the weather in November, you can check Newcastle weather in November.
September and December present notably different weather conditions. In September, temperatures range from a minimum of 2°C (35°F) to a pleasant average of 13°C (56°F) and can reach a maximum of 24°C (76°F). This month sees about 68 mm (2.7 in) of precipitation over 13 days, coupled with relatively high humidity at 86%. In contrast, December’s temperatures drop, with a minimum of -4°C (25°F) and an average of 6°C (43°F), peaking at 13°C (56°F). The month experiences more precipitation, totaling 90 mm (3.5 in) over 15 days, and slightly lower humidity at 84%. For more details on December weather, you can check Newcastle weather in December.
As September unfolds in Newcastle, the transition from the warmth of summer to the chill of autumn becomes evident. Temperatures swing from a comfortable maximum of 24°C to brisk lows of 2°C, creating a refreshing yet cool atmosphere. This month also brings increased humidity at 86%, and with about 13 days of rain accumulating to 68 mm, September sets a tone of rejuvenation, contrasting sharply with the drier summer months. For those venturing to Newcastle, it's a great time to embrace the change of seasons. For more insights on what to expect throughout the year, check out Newcastle Climate.