Last updated: March 17, 2025
In September, Antrim, United Kingdom, experiences a transitional climate with a maximum temperature of 22°C (72°F) and an average daily temperature of 13°C (56°F). As the month progresses, temperatures can dip to a minimum of 2°C (35°F), while the landscape becomes lush under 70 mm (2.8 in) of rainfall over 15 wet days. With an average humidity level of 88%, the atmosphere remains cool and damp, characteristic of early autumn in the region. This combination of weather conditions makes September an ideal time for cozy indoors or invigorating outdoor explorations.
As September arrives in Antrim, the transition from summer to autumn becomes evident in the temperatures. The month begins with a minimum of 2°C (35°F), signaling cooler mornings, while average highs reach a pleasant 22°C (72°F). This gentle decline from the warmth of August shows a decrease of approximately 5°C in the maximum temperatures, creating a comfortable atmosphere to enjoy the early fall colors. Despite the cooler nights, the average temperature of 13°C (56°F) reflects a mild month that is perfect for outdoor activities. As the days grow shorter, September in Antrim invites a cozy embrace of the upcoming season, blending the tail end of summer warmth with the crispness of autumn breezes.
In September, Antrim experiences a shift in its climatic rhythm, recording an average precipitation of 70 mm (2.8 in) over the course of 15 days. This marks a decrease from the heavy rains of August, which brought in 118 mm (4.7 in) across 20 days, hinting at a transition from summer's abundant downpours to a more temperate autumn. The rainfall levels in September consistently align with the monthly averages of the previous months, suggesting a steady but more moderate return to typical weather patterns. As the year progresses into October, precipitation is expected to rise again, reflecting the region's characteristic variability and the onset of the wetter fall season.
In September, Antrim experiences a notable rise in humidity, reaching 88%, marking the highest point of the month. This increase, part of a gradual upward trend, follows the sustained humidity levels of 86% seen in both July and August. As the summer transitions into autumn, humidity gradually elevates, setting the tone for the wetter months ahead. Notably, October sees this trend continue, with humidity climbing further to 89%. Overall, Antrim's climate is characterized by high humidity throughout the year, with September serving as a bridge between the warmer summer months and the increasingly damp conditions of autumn.
As September rolls into Antrim, the UV Index remains at a moderate level of 5, signaling that while sun exposure is safe for most, precautions are still advised. With a burn time of 30 minutes, this month provides a gentle transition from the summer months, where the UV Index peaked at 8 in June and July. August started to cool down with a high index of 7, but now September settles at a more manageable level, reminiscent of the spring months. As the days grow shorter, it’s a great time to enjoy the outdoors while keeping sun safety in mind. To learn more about the UV levels throughout the year, visit Antrim UV Index.
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As summer gently fades into autumn, September in Antrim, United Kingdom, offers a delightful blend of warmth and light, recording 288 hours of sunshine. This marks a notable decline from the vibrant days of July and August, which boasted 399 and 350 hours, respectively. However, compared to the chill of winter months, September shines brightly, surpassing both October's 224 hours and the year's coldest months. The gradual transition in daylight hours signals the encroachment of autumn, yet the lingering summer sun invites residents and visitors alike to savor the picturesque landscapes bathed in golden hues. With the sun still gracing the skies, September is a splendid reminder of summer's last embrace before winter settles in.
In Antrim, United Kingdom, the likelihood of sunny weather in September is relatively low, with only an 18% chance of sunshine. This figure mirrors trends observed during the late summer, where August also recorded a similar probability, indicating a pattern of overcast skies as the year transitions into autumn. Notably, the chance of sunny days rises significantly in April, reaching 41%, before gradually declining through the summer months. Thus, September continues the trend of diminishing sunlight, suggesting that those yearning for bright days may want to plan their outdoor activities earlier in the season.
As summer transitions into autumn, September in Antrim, United Kingdom, sees a notable decline in daylight, with about 12 hours of sunlight illuminating the day. This shift marks a gradual retreat from the peak of summer brightness, where June dazzles with 17 hours of daylight, and July still enjoys a generous 16 hours. As August fades, bringing 14 hours of light, September's slight reduction signals the onset of shorter days ahead. Following September, October delivers only 10 hours of daylight, continuing the trend towards the wintry months of November and December, where daylight dwindles to just 8 hours and 7 hours, respectively. This dynamic shift in daylight not only alters the landscape but also invites Antrim's residents to savor the remaining golden hours of early autumn before the darker months settle in.
As September arrives in Antrim, the gentle caress of the wind heralds the transition to autumn with an average speed of 3.2 m/s (7 mph). This slight uptick from the languid summer months marked by July’s 2.5 m/s and August’s 2.9 m/s reflects the region’s typical shift as cooler weather settles in. September’s winds are notably softer compared to the brisker spring and early summer months, where speeds peaked at 5.7 m/s in February. Yet, as the month gives way to October, residents can anticipate a return to more invigorating gusts, forecasted at 4.2 m/s. This pattern highlights a rhythm of seasonal transition, where September stands as a bridge between the serene calm of summer and the lively, sharper winds of fall.
The weather in Antrim 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 Antrim and find detailed weather information for every month.
In September, the weather tends to be milder with an average temperature of 13°C (56°F) and maximum highs reaching up to 22°C (72°F). This month experiences about 70 mm (2.8 in) of precipitation over approximately 15 days, accompanied by a high humidity of 88%. In contrast, January brings colder temperatures, with an average of just 5°C (42°F) and maximums around 14°C (57°F). Although it receives slightly less precipitation at 56 mm (2.2 in) over 11 days, the humidity remains comparable at 87%. For more detailed insights, you can check Antrim weather in January.
In comparing the weather patterns of September and February, notable differences emerge. September typically features milder temperatures, with a minimum of around 2°C (35°F) and an average of 13°C (56°F), peaking at 22°C (72°F). In contrast, February experiences colder conditions, with minimum temperatures dropping to -3°C (27°F) and an average of 6°C (42°F), while the maximum only rises to 14°C (58°F). Precipitation levels are relatively similar, with September receiving 70 mm (2.8 in) over 15 days and February receiving slightly more at 89 mm (3.5 in) over 14 days; both months maintain high humidity levels, around 88% in September and 86% in February. For a more detailed look at February's weather, you can visit Antrim weather in February.
When comparing the weather in September and March, notable differences arise in temperature and overall conditions. September typically experiences milder temperatures, with a minimum of 2°C (35°F) and an average of 13°C (56°F), reaching a maximum of 22°C (72°F). In contrast, March is generally colder, with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 17°C (63°F) and an average of 6°C (44°F). While both months see a fair amount of precipitation, March has slightly higher rainfall at 78 mm (3.1 in) over 16 days, compared to September’s 70 mm (2.8 in) over 15 days. Additionally, humidity levels remain quite similar, with September at 88% and March at 86%. For more details on March weather in Antrim, visit Antrim weather in March.
September and April present distinct weather contrasts. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 22°C (72°F), with an average of 13°C (56°F). This month experiences higher precipitation levels, totaling 70 mm (2.8 in) over about 15 days, accompanied by relatively high humidity at 88%. In contrast, April tends to be cooler, with temperatures peaking at 20°C (67°F) and dipping as low as -1°C (30°F), resulting in an average of 8°C (47°F). The precipitation in April is less, amounting to 45 mm (1.8 in) over 11 days, paired with slightly lower humidity at 85%. For a more detailed look at what to expect, check out Antrim weather in April.
September and May present distinct weather patterns, highlighting the transition between seasons. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 22°C (72°F), with an average of 13°C (56°F). This month sees approximately 70 mm (2.8 in) of precipitation over about 15 days, accompanied by high humidity levels at 88%. Conversely, May experiences slightly milder temperatures, with a minimum of 0°C (32°F) and a maximum of 23°C (74°F), resulting in an average temperature of 11°C (52°F). Precipitation in May is slightly lower at 66 mm (2.6 in) over 14 days and humidity at 82%. Both months show a considerable amount of rainfall, but September tends to be a bit warmer and more humid than May. For more detailed information about May weather, you can visit Antrim weather in May.
September weather is cooler and more humid compared to June, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 22°C (72°F), while June offers slightly warmer temperatures, starting at 6°C (42°F) and reaching up to 27°C (80°F). Both months experience considerable rainfall, with September receiving 70 mm (2.8 in) over 15 days and June recording 82 mm (3.2 in) over 16 days. Interestingly, September's humidity is slightly higher at 88%, compared to June's 84%. For more details, you can check Antrim weather in June.
When comparing the weather in September and July, it’s evident that July is warmer, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 27°C (80°F), yielding an average of 15°C (60°F). In contrast, September experiences cooler temperatures, with a minimum of 2°C (35°F), an average of 13°C (56°F), and a maximum of 22°C (72°F). Additionally, July sees slightly higher precipitation, totaling 86 mm (3.4 in) over 14 days, compared to September's 70 mm (2.8 in) over 15 days. Humidity levels are comparable in both months, with July at 86% and September slightly higher at 88%. For more detailed information, check out Antrim weather in July.
September sees a notable shift in weather compared to August. The average temperatures in September range from a minimum of 2°C (35°F) to a maximum of 22°C (72°F), which is cooler than August's minimum of 6°C (43°F) and maximum of 23°C (73°F). Additionally, September experiences more frequent rainfall, totaling 70 mm (2.8 in) over 15 days, compared to August's higher precipitation of 118 mm (4.7 in) over 20 days. Humidity levels remain relatively similar, with September at 88% and August at 86%. For a detailed overview of August climates, you can check Antrim weather in August.
In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 22°C (72°F), with an average of 13°C (56°F). The month experiences 70 mm (2.8 in) of precipitation over 15 days, maintaining a high humidity level of 88%. In contrast, October sees cooler conditions, with temperatures dipping to a minimum of 0°C (33°F) and peaking at 18°C (65°F), averaging 10°C (51°F). Precipitation increases slightly to 85 mm (3.3 in) across the same number of rainy days, and humidity remains quite high at 89%. For more detailed information, you can check out Antrim weather in October.
September and November weather exhibit notable differences as the season transitions. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 22°C (72°F), with an average of 13°C (56°F). The month experiences around 70 mm (2.8 in) of precipitation over 15 days, accompanied by high humidity at 88%. In contrast, November sees cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 15°C (59°F), averaging 8°C (46°F). Precipitation increases slightly to 85 mm (3.3 in), also spread over 15 days, and humidity rises to 90%. For more detailed information, you can visit Antrim weather in November.
September and December exhibit distinct weather patterns, reflecting the transition from early autumn to winter. In September, temperatures average around 13°C (56°F), with a maximum of 22°C (72°F) and a minimum of just 2°C (35°F), while the month experiences 70 mm (2.8 in) of precipitation over 15 days, coupled with a high humidity level of 88%. In contrast, December sees a significant drop in temperatures, averaging 6°C (43°F) with highs of 13°C (56°F) and lows plunging to -4°C (25°F). This month also records slightly more precipitation at 82 mm (3.2 in), maintaining a similar number of rainy days. Despite the slight difference in humidity, December's overall chilliness marks a stark contrast to the milder September weather. For more detailed insights into the December climate, visit Antrim weather in December.
As September unfolds in Antrim, it brings a notable transition in weather patterns compared to the warmer summer months. The average temperatures begin to dip, creating a refreshing chill in the air, particularly noticeable in the brisk morning hours. This month is characterized by higher humidity levels, often reaching 88%, and a significant amount of rainfall, making it one of the wetter periods of the year with about half the days experiencing precipitation. As the landscape shifts into autumn, the vibrant colors emerge, creating a picturesque backdrop that contrasts with the summer's warmth. For a deeper dive into Antrim's weather patterns, feel free to explore Antrim Climate.