Last updated: August 21, 2025
Experience the unique September weather of Uummannaq, Greenland, where temperatures dance between a maximum of 8°C (46°F) and a chilling minimum of -8°C (17°F). The average hovers around the freezing point at 0°C (32°F), making this remote location a true reflection of nature's contrast. With 31 mm (1.2 in) of precipitation over the month, expect rain on about 8 days, contributing to the region's lush yet serene landscape. Humidity levels soar at 87%, enveloping the area in a cool, crisp atmosphere that highlights the beauty of the Arctic environment.
In September, Uummannaq, Greenland, begins its transition into the colder months, showcasing temperatures that reflect this shift. The minimum temperature dips to a chilly -8°C (17°F), while the average settles right at 0°C (32°F), hinting at the approach of winter. The maximum temperature reaches 8°C (46°F), providing a brief respite from the more severe cold of earlier months. As autumn sets in, the gradual decrease in warmth becomes evident, contrasting with the balmy summer conditions of July and August. With temperatures steadily dropping, September serves as a gateway to the stark beauty of the Arctic landscape, where the vibrant hues of fall start to emerge against a backdrop of ice and snow.
In September, Uummannaq, Greenland, experiences a moderate level of precipitation, with totals reaching 31 mm (1.2 in) over the course of 8 days. This marks a slight decrease from the preceding months of August and July, which recorded higher precipitation levels of 37 mm (1.4 in) and 57 mm (2.3 in) respectively. The transition into autumn brings a shift in weather patterns; while the amount of rainfall is still significant, it suggests a gradual move toward drier conditions as the year progresses. As temperatures begin to cool, this September rainfall plays a vital role in replenishing local water sources, setting the stage for the months ahead while also highlighting the northern climate's inherent variability.
In Uummannaq, Greenland, September marks a transitional phase in humidity levels, relaxing slightly to 87% after the peaks of summer. Throughout the year, the region experiences consistently high humidity, with January leading the charge at a staggering 90%. Notably, the late summer months of August exhibit the highest humidity, reaching 91%, before tapering off as autumn approaches. This gradual decline from the sultry August atmosphere reflects a shift towards more stable fall conditions, while still remaining relatively humid compared to the winter months. Interestingly, the humidity bounces back to 90% in October, suggesting that Uummannaq's coastal climate maintains a steady grip on moisture year-round, providing a unique resilience against the harsh Arctic environment.
In September, Uummannaq experiences a gentle decline in UV index, dropping to 2 with a corresponding low exposure category and a comfortable burn time of 45 minutes. This marks a transition from the moderate levels experienced during the summer months when UV rays peaked at 5 in June. As the days shorten and temperatures cool, the sun's intensity lessens, allowing for safer outdoor activities as residents and visitors enjoy the stunning Arctic landscape. With a notable trend of decreasing UV exposure leading into the fall, it's the perfect time to embrace the beauty of this remote gem. For more detailed information, check out the Uummannaq UV Index.
UV Risk Categories
As summer transitions into fall, September in Uummannaq, Greenland, offers a delightful glimpse of sunshine with 271 hours of daylight, a notable drop from the vibrant summer months but still a significant improvement over the dim winter days ahead. Following the peak of 486 hours in June, the gradual decrease reflects the shifting seasons, yet September maintains a warm glow compared to the meager 21 hours of sunlight in November. The month stands as a bridge, capturing the last remnants of summer's brightness while hinting at the long winter nights that loom, reminding locals and visitors alike of the changing landscape and the beauty of fleeting warmth.
In Uummannaq, Greenland, September offers a refreshing uplift in sunlit days, boasting a 49% chance of sunshine—a promising peak as summer transitions to autumn. This month stands out against the backdrop of the year, showing a significant rise in sunny weather compared to the preceding months of July and August, which see only 29% and 32% chances, respectively. With May and June already hinting at the summer's glow, September maintains this sunny trend, making it an enticing time for visitors eager to experience the unique beauty of Greenland bathed in sunlight. As the days begin to shorten and autumn approaches, the warmth of the sun lingers, providing an inviting atmosphere that's hard to resist.
As the summer warmth begins to wane, September in Uummannaq, Greenland, ushers in a transition from the endless daylight of June and July to the more subdued hours of autumn. With 13 hours of daylight, September offers a perfect balance, providing ample time to enjoy the picturesque landscapes tinged with autumn colors while still benefiting from significant sunlight. This month marks a noticeable decline from August’s 18 hours, signaling the approach of shorter days ahead. As daylight diminishes, moving towards the 4 hours of November and the stark 0 hours of December, residents and visitors alike seize the opportunity to relish the lingering light and prepare for the darker months to come.
As the summer days fade in Uummannaq, Greenland, September brings a gentle shift in the landscape, marked by a notable decrease in average wind speed, which drops to just 1.8 m/s (4 mph). This month marks the calmest winds of the year, providing a serene backdrop as the region transitions into autumn. Following a steady breeze that typically ranges between 2.4 and 2.9 m/s from late winter through summer, September's stillness is a refreshing respite, making it an ideal time for contemplation amidst the majestic Arctic scenery. As the winds begin to pick up again in October, with an average of 2.6 m/s (6 mph), September’s tranquility stands out, inviting both visitors and locals to embrace the enchanting quietude before the colder months usher in a more brisk climate.
Weather in Uummannaq varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Uummannaq, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather in Uummannaq is relatively mild, with average temperatures hovering around 0°C (32°F) and daily highs reaching up to 8°C (46°F). The month experiences about 31 mm (1.2 in) of precipitation over approximately 8 days, alongside a high humidity level of 87%. In stark contrast, January is significantly colder, with average temperatures dropping to -14°C (7°F) and daytime highs barely reaching 2°C (37°F). Precipitation is slightly lower at 28 mm (1.1 in) over 6 days, and humidity remains high at 90%. For more detailed insights on January weather conditions, you can check Uummannaq weather in January.
September and February exhibit stark differences in weather conditions. In September, temperatures are milder, ranging from a minimum of -8°C (17°F) to a maximum of 8°C (46°F), with an average of 0°C (32°F) and relatively higher precipitation of 31 mm (1.2 in) over about 8 days. Humidity hovers around 87%, contributing to a cooler but not excessively frigid atmosphere. In contrast, February is considerably colder, with minimum temperatures plummeting to -29°C (-21°F) and an average temperature of -17°C (2°F), reaching a maximum of only -6°C (22°F). February sees significantly lower precipitation, only 12 mm (0.5 in) across just 3 days, and a similar humidity level of 86%. For a deeper dive into February's weather specifics, you can explore Uummannaq weather in February.
September and March present strikingly different weather conditions. In September, the temperatures range from a minimum of -8°C (17°F) to a maximum of 8°C (46°F), with an average temperature of 0°C (32°F). The month experiences 31 mm (1.2 in) of precipitation over about 8 days, accompanied by a relatively high humidity of 87%. In contrast, March is significantly colder, with temperatures dipping as low as -31°C (-23°F) and averaging -16°C (3°F), peaking at -1°C (30°F). Precipitation in March is slightly lower at 23 mm (0.9 in) across 6 days, alongside a higher humidity level of 92%. For those interested in exploring more about the climate during this time, check out Uummannaq weather in March.
September and April present contrasting weather patterns, with September generally being milder. In September, temperatures range from a chilly minimum of -8°C (17°F) to a maximum of 8°C (46°F), averaging around 0°C (32°F). In contrast, April is significantly colder, with temperatures dipping as low as -23°C (-9°F) and averaging -9°C (17°F), while reaching a maximum of 7°C (44°F). Both months see similar levels of precipitation, with September recording 31 mm (1.2 in) over 8 days and April slightly less at 29 mm (1.2 in) over 7 days. Humidity remains consistent in both months at 87%, highlighting a damp chill that is prevalent throughout this period. For a closer look at the April weather specifics, you can check out Uummannaq weather in April.
September and May exhibit notable contrasts in weather conditions. In September, the average temperature hovers around 0°C (32°F), with a minimum of -8°C (17°F) and a maximum of 8°C (46°F). The month sees approximately 31 mm (1.2 in) of precipitation over about 8 days, with humidity levels at 87%. Conversely, May remains cooler, with an average temperature of -2°C (29°F), ranging from a minimum of -17°C (2°F) to a maximum of 10°C (51°F). Precipitation is lower in May, totaling around 20 mm (0.8 in) across just 4 days, while humidity is slightly higher at 89%. For more detailed information, you can refer to Uummannaq weather in May.
In comparing the weather of September and June, September tends to be colder, with temperatures ranging from a minimum of -8°C (17°F) to a maximum of 8°C (46°F), while June features slightly milder conditions with temperatures ranging from -5°C (24°F) to 12°C (54°F). Both months experience similar humidity levels, with September at 87% and June at 86%. Precipitation in September is slightly higher at 31 mm (1.2 in) over 8 days, compared to June’s 27 mm (1.1 in) over 7 days. For a more detailed look at June weather, you can visit Uummannaq weather in June.
In September, temperatures in Uummannaq exhibit a marked drop compared to July, with minimums reaching -8°C (17°F) and an average of 0°C (32°F), contrasting with July's milder minimum of -2°C (29°F) and an average of 6°C (44°F). While both months experience precipitation, September records 31 mm (1.2 in) over 8 days, slightly less than July's 57 mm (2.3 in) spread over 10 days. Humidity is relatively high in both months but remains slightly higher in September at 87%, compared to July’s 84%. For more information, you can check Uummannaq weather in July.
September's weather in Uummannaq is significantly cooler than that of August. While August experiences milder temperatures with a minimum of -2°C (29°F) and a maximum of 16°C (62°F), September sees a drop, with temperatures ranging from a chilly -8°C (17°F) to a maximum of 8°C (46°F). Precipitation levels are slightly lower in September, totaling 31 mm (1.2 in) over 8 days compared to August's 37 mm (1.4 in) over 7 days. Humidity remains high in both months, though September is slightly less humid at 87% compared to August's 91%. For more detailed information, you can explore Uummannaq weather in August.
In comparing the weather between September and October, we see a notable drop in temperatures, with October experiencing a minimum of -14°C (7°F) compared to September's -8°C (17°F). The average temperature also falls in October to -4°C (25°F), while the daytime highs slightly decrease from 8°C (46°F) in September to 6°C (42°F). Precipitation remains similar, with October experiencing 34 mm (1.3 in) over 8 days, just marginally more than September's 31 mm (1.2 in) during the same number of days. Humidity increases from 87% in September to 90% in October, contributing to a more chilly and damp atmosphere. For more detailed information, you can refer to Uummannaq weather in October.
In September, the weather is relatively mild with average temperatures around 0°C (32°F), while November brings a notable drop, with averages plunging to -7°C (19°F). September typically sees a maximum temperature of 8°C (46°F) and a minimum of -8°C (17°F), whereas November's temperatures can dip as low as -16°C (4°F). Precipitation remains fairly consistent, with September recording 31 mm (1.2 in) over 8 days, compared to November's 36 mm (1.4 in) across 10 days. Humidity levels are slightly higher in November at 90%, compared to 87% in September. For those interested in more details, you can check out Uummannaq weather in November.
September and December in Uummannaq showcase a stark contrast in weather. In September, temperatures range from a minimum of -8°C (17°F) to a maximum of 8°C (46°F), with an average around 0°C (32°F), accompanied by 31 mm of precipitation over 8 days. The humidity is relatively high at 87%, giving the air a crispness typical of early autumn.
By December, the atmosphere becomes significantly colder, with temperatures dropping to a minimum of -18°C (0°F) and a maximum of just 3°C (38°F), while the average temperature settles at -8°C (18°F). Precipitation remains relatively similar at 30 mm over 9 days, but the humidity increases slightly to 88%, creating an even more frigid environment. For more details, visit Uummannaq weather in December.
As September unfolds in Uummannaq, the weather presents a distinct transition from the warmth of summer to the chill of autumn. With average temperatures hovering around freezing and increased precipitation, the month is characterized by a notable rise in humidity, reaching 87%. This marks a significant shift from the drier summer months, leading to a more overcast and occasionally rainy atmosphere. While the temperature may drop to a brisk 8°C (46°F) at its peak, September serves as a beautiful prelude to the wonders of winter, painting the landscape in soft hues and invigorating the senses. For a deeper understanding of Uummannaq's unique climatic patterns, explore the detailed insights at Uummannaq Climate.