Last updated: March 17, 2025
September in Armagh, United Kingdom, offers a mild and variable climate as summer transitions into autumn. With maximum temperatures reaching 23°C (74°F) and an average of 13°C (56°F), early fall days can still feel quite warm. However, nighttime temperatures can dip to a chilly 2°C (35°F), showcasing the region's temperature fluctuations. Expect moderate rainfall, with 72 mm (2.8 in) of precipitation spread across 14 days, contributing to the lush greenery characteristic of this time of year. The high humidity level at 88% adds a touch of dampness to the air, making for a refreshing, albeit sometimes brisk, atmosphere in this historic city.
As September rolls into Armagh, temperatures begin to transition into the cooler embrace of autumn. With a minimum of 2°C (35°F) and an average hovering around 13°C (56°F), the city experiences a gentle dip from the warm summer days. The maximum temperature reaches a comfortable 23°C (74°F), offering pleasantly mild afternoons for those looking to enjoy the outdoors. This month marks a shift from the warmer summer months, as the temperature curve steadily declines towards the briskness of October, hinting at the changing seasons and the enchanting colors that autumn brings. The crisp air and fading warmth create a perfect blend for outdoor activities and cozy gatherings alike.
In September, Armagh experiences an average precipitation of 72 mm (2.8 in) over 14 days, marking a transition into the wetter autumn months. This is a decrease from the previous month's substantial 121 mm (4.8 in), which saw the highest rainfall of the year. September's showers are both plentiful and refreshing, as the region begins to shed its summer coat. Notably, the frequency of rain during this month is more moderate compared to August, indicating a gradual return to the typical patterns of regular, albeit lighter, rainfall leading into October. As autumn unfolds, the skies of Armagh become a blend of crisp air and the soft drumming of rain, highlighting the region's character as it moves towards the winter months.
In September, Armagh, United Kingdom, experiences a notable rise in humidity, reaching 88%, which reflects a gradual increase as summer transitions into autumn. This uptick is consistent with the pattern observed throughout the months, where humidity levels remain relatively high, fluctuating between 82% in May and peaking at 90% in November. The trend indicates a shift towards more moisture-laden air as the year progresses, with September showing a slight rebound from the lower figures seen in late spring. As autumn approaches, the climate becomes increasingly humid, setting the stage for the wetter months ahead.
As summer gives way to autumn in September, Armagh, United Kingdom, experiences a moderate UV Index of 5, indicating a balanced time for outdoor activities with a recommended burn time of 30 minutes. This marks a noticeable decline from the peak summer months when the UV Index soared to levels of 7 and 8 in July and June, where sun exposure was more critical. Interestingly, the trend from July’s intense sun slowly transitions, reflecting a safer sun exposure environment as the year progresses—offering a perfect opportunity to enjoy the changing foliage without the fear of quick sunburn. For more detailed insights, check out the Armagh UV Index.
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September in Armagh is a delightful blend of lingering summer warmth and the first hints of autumn, boasting 262 hours of golden sunshine. This month continues the trend of a vibrant sunlit season, following the peak of 365 hours in May and a solid 298 hours in August. As the year progresses, the sunlight begins to taper off, with October ushering in a notable decline to 206 hours. This gradual reduction is characteristic of the transition from the lively summer months into the cooler, dimmer days of fall, but September still offers plenty of reasons to bask in the glow before winter sets in.
In September, the likelihood of sunny weather in Armagh, United Kingdom, stands at 18%, making it one of the less optimistic months for sunlight. This trend follows a series of summer months, such as July and August, which also feature a low chance of sun, with probabilities sinking to 24% and 20%, respectively. As the year progresses, the chances dwindle from 37% in April—typically the month when bright days begin to emerge—to a mere 16% in October. This pattern suggests that as autumn unfolds, residents and visitors can expect increasingly overcast skies, with September marking a subtle shift into the gloomier months ahead.
As summer draws to a close in Armagh, September ushers in a gentle transition with approximately 12 hours of daylight. Following the peak of 17 hours in June, a steady decline becomes evident as the days gradually shorten. This month serves as a bridge between the vibrant long days of summer and the crisp, shorter days of autumn. With daylight tapering off, September offers a beautifully balanced blend of brightness for both outdoor enthusiasts and those seeking to savor the changing seasons, embodying the ripeness of early autumn while hinting at the cozy, darker days ahead.
As September unfolds in Armagh, the average wind speed settles at 3.1 m/s (7 mph), marking a subtle transition from the lighter breezes of summer. Following the gentle winds of July and August, which dipped to 2.3 m/s (5 mph) and 2.8 m/s (6 mph) respectively, September's breath invigorates the air, suggesting a shift towards the more robust gusts typical of autumn. This month witnesses a gradual increase in wind speed, paving the way for the winds of October and November, which both feature averages of 4.1 m/s (9 mph) and 4.2 m/s (9 mph). Overall, September serves as a gentle prelude, bridging the calm of summer with the energetic whispers of fall, inviting residents to revel in the crispness of the changing seasons.
The weather in Armagh 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 Armagh and find detailed weather information for every month.
September typically offers milder temperatures, with averages around 13°C (56°F) and highs reaching up to 23°C (74°F), while January is much colder, with average temperatures at 5°C (42°F) and maximums of 14°C (58°F). Rainfall in September is slightly higher, with 72 mm (2.8 in) over about 14 days, while January sees 60 mm (2.4 in) across 11 days. Humidity levels remain similar in both months, hovering around 88% in September and 87% in January. For a detailed look at January weather, you can visit Armagh weather in January.
September offers a milder climate with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 23°C (74°F) and an average of 13°C (56°F). The month typically experiences 72 mm (2.8 in) of precipitation over approximately 14 days, combined with high humidity levels of 88%. In contrast, February is colder and registers temperatures from a low of -4°C (24°F) to a high of 15°C (59°F), averaging 6°C (43°F). Precipitation increases slightly to 91 mm (3.6 in) over about 15 days, with humidity marginally lower at 86%. For more detailed information about the weather during February, visit Armagh weather in February.
September generally enjoys milder temperatures compared to March, with average highs reaching up to 23°C (74°F) while March peaks at 17°C (63°F). The minimum temperature in September is more tolerable at 2°C (35°F), whereas March can experience colder nights with lows dropping to -4°C (25°F). Additionally, both months are relatively damp, with September receiving 72 mm (2.8 in) of rainfall over 14 days and March slightly wetter at 83 mm (3.3 in) over 16 days. Humidity levels are quite comparable, with September at 88% and March slightly lower at 86%. For more detailed insights about the weather during March, check out Armagh weather in March.
September and April present contrasting weather patterns as they transition from summer to autumn and winter to spring, respectively. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 23°C (74°F), averaging 13°C (56°F). The month experiences around 72 mm (2.8 in) of precipitation over 14 days, with a humidity level of 88%. In comparison, April tends to be colder, with temperatures ranging from a low of -3°C (27°F) to a high of 20°C (68°F), averaging only 8°C (47°F). Precipitation in April is lower at 49 mm (1.9 in) over 12 days, and the humidity is slightly lower at 85%. For a detailed look at April's weather, visit Armagh weather in April.
In comparing the weather between September and May, we see some intriguing differences. September tends to have slightly warmer temperatures, with a minimum of 2°C and a maximum reaching 23°C, while May experiences cooler lows at -1°C. However, May can occasionally match September's high, peaking at 24°C. Both months are relatively humid, but September has a higher humidity level at 88%, compared to May’s 82%. Precipitation is similar, with September receiving 72 mm over 14 days and May slightly less at 68 mm over 12 days. For more detailed information on May weather, you can visit Armagh weather in May.
When comparing the weather in September and June, one can see notable differences in both temperature and precipitation. September experiences cooler conditions with minimum temperatures around 2°C (35°F) and an average of 13°C (56°F), while June tends to be warmer, with minimums at 5°C (41°F) and an average temperature of 14°C (58°F). In terms of maximum temperatures, September peaks at 23°C (74°F), contrasting with June's higher maximum of 29°C (84°F). Both months see significant rainfall, with September receiving 72 mm (2.8 in) across 14 days and June slightly wetter at 81 mm (3.2 in) over 15 days. Interestingly, September has a higher humidity level at 88%, compared to June's 84%. For more detailed insights, check out Armagh weather in June.
In comparing the weather between September and July, September tends to be cooler, with average temperatures ranging from a minimum of 2°C (35°F) to a maximum of 23°C (74°F), while July offers warmer conditions, with temperatures ranging from 6°C (43°F) to a maximum of 28°C (82°F). Both months experience a fair amount of precipitation, with September receiving about 72 mm (2.8 in) over 14 days and July slightly more, at 78 mm (3.1 in) over 13 days. Humidity levels are relatively similar, with September at 88% and July at 86%, making both months feel quite damp. For more detailed information about July weather in Armagh, you can check out Armagh weather in July.
September generally sees cooler temperatures compared to August, with minimums dipping down to 2°C (35°F) and average highs reaching 23°C (74°F), while August experiences milder temperatures with minimums around 6°C (42°F) and an average high of 24°C (75°F). Additionally, September has higher humidity levels at 88%, compared to August’s 86%. Precipitation is also notably different; September receives 72 mm (2.8 in) over 14 days, whereas August is wetter with 121 mm (4.8 in) spread across 19 days. For more detailed insights on August weather, visit Armagh weather in August.
In comparing the weather between September and October, we can see a notable decline in temperatures. September typically features a minimum of 2°C and an average of 13°C, with highs reaching up to 23°C. In contrast, October's temperatures drop, with a minimum of -1°C, an average of 10°C, and a maximum of 19°C. Precipitation also increases slightly from September's 72 mm over 14 days to October's 82 mm across 15 days, contributing to a higher humidity level of 89%. For a more detailed look at weather patterns, you can visit Armagh weather in October.
September and November exhibit notable differences in weather characteristics. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 23°C (74°F), with an average of 13°C (56°F). The month sees around 72 mm (2.8 in) of precipitation over approximately 14 days, accompanied by a humidity level of 88%. In contrast, November experiences cooler temperatures, with a minimum of -3°C (26°F) and a maximum of 15°C (59°F), averaging at 7°C (46°F). The precipitation slightly increases to 82 mm (3.2 in) over 15 days, while humidity levels rise to 90%. For more details, you can check Armagh weather in November.
September weather is characterized by milder temperatures, with minimums around 2°C (35°F) and maximums reaching 23°C (74°F). The month sees an average temperature of 13°C (56°F) and experiences about 72 mm (2.8 in) of precipitation over 14 days, along with relatively high humidity at 88%. In contrast, December brings cooler conditions, with minimum temperatures dropping to -3°C (27°F) and maximums capping at 13°C (56°F), resulting in an average temperature of 6°C (43°F). Precipitation increases slightly to 89 mm (3.5 in) spread over 13 days, and humidity remains similar at 86%. For a detailed look at December weather, you can visit Armagh weather in December.
As September rolls in, Armagh experiences a noticeable shift in weather, marked by cooler temperatures and increased humidity that sets the stage for the autumn months ahead. With highs reaching a mild 23°C (74°F) and lows dipping to a brisk 2°C (35°F), the transition is palpable. Rainfall is frequent, with over half the month featuring precipitation, resulting in a total of 72 mm poured throughout. This blend of warmth and wetness contrasts sharply with the drier and warmer summer days that precede it. As you prepare for the changing seasons, understanding the nuances of September's climate can help you fully appreciate the beauty of Armagh's autumn landscape. For a deeper look into Armagh's weather patterns, check out Armagh Climate.