Last updated: August 21, 2025
October in Sisimiut, Greenland presents a striking transition into the heart of autumn. With a maximum temperature reaching 7°C (44°F), the average hovers around a brisk -1°C (30°F), plunging to a minimum of -12°C (11°F) during the chilly nights. This month is marked by a significant precipitation total of 75 mm (2.9 in), occurring over approximately 11 days, contributing to the region's lush, albeit frosty, landscape. The air is notably humid, with humidity levels at 86%, making October a month of rich contrasts and captivating Nordic beauty in this remote Arctic town.
In October, Sisimiut, Greenland, experiences a significant transition as temperatures begin to dip with the approach of winter. The month registers a minimum of -12°C (11°F), an average of -1°C (30°F), and a maximum of 7°C (44°F), signaling the end of the relative mildness felt in the previous summer months. This chilling trend marks a gradual descent from the warmer temperatures of late summer, which showcased highs around 13°C (56°F) in August and 9°C (49°F) in September. The crisp air invites the vibrant hues of autumn, while the icy breath of winter looms just around the corner, showcasing Sisimiut's dramatic climate shifts throughout the year.
In October, Sisimiut, Greenland experiences a notable uptick in precipitation, with 75 mm (2.9 in) of rainfall falling over 11 days. This increase marks a significant rise compared to the drier summer months, such as July and August, where precipitation levels peaked at 80 mm and 66 mm, respectively. The transition into autumn brings a consistent rhythm of rainfall, as October aligns with November, both receiving the same amount of moisture. As the year progresses, it’s evident that the cooler months indulge in more frequent wet days, setting the stage for a dramatic shift in the landscape as winter approaches. This pattern highlights the region's dynamic weather shifts that keep both residents and visitors on their toes.
As October settles in Sisimiut, Greenland, the humidity reaches 86%, marking a slight increase from the previous month. Throughout the year, a clear trend emerges: after a peak in the winter months, where humidity levels hover around a striking 93-96%, the summer months see a gradual dip; July enjoys the driest conditions at 81%. However, as autumn progresses, humidity levels begin to rise again, hinting at the inevitable approach of winter. The transition from the more arid summer to the moist autumn months illustrates the dynamic climate of this coastal town, where the crisp air of October melds with a prevailing dampness.
As October rolls into Sisimiut, Greenland, the UV Index dips to a modest 2, reflecting a return to low exposure levels. This is a pleasant contrast to the peak summer months of June and July, when the index reached a high of 6. In October, residents and visitors can enjoy outdoor activities with a burn time of 45 minutes before the sun's rays become significant, reminiscent of the winter months of January and February, which also boast a low UV Index of 1. The transition from summer to fall showcases a gradual decrease in UV exposure, making October a safe time for outdoor adventures. For more detailed information, check out the comprehensive guide on the Sisimiut UV Index.
UV Risk Categories
October in Sisimiut, Greenland, is a fascinating transitional month as the long summer days wane into the crisp embrace of winter. With 136 hours of sunlight, October showcases a significant drop from September's 229 hours, marking the end of the longer daylight period. This reduction continues the trend of diminishing sunlight as the year progresses, following the peak of 356 hours in May and the subsequent summer months filled with near-midnight sun. However, even as daylight begins to dwindle, October's gentle glow offers a beautiful contrast to the relentless darkness that descends in November, where sunlight plummets to a mere 41 hours. The interplay between fading light and the approach of winter creates a serene atmosphere, making October a unique time to experience the tranquil beauty of Sisimiut.
In October, Sisimiut, Greenland enjoys a 36% chance of sunny weather, offering a refreshing contrast to the preceding months. Following the slightly higher likelihood of sunshine in September at 57%, October marks a slight decline, yet remains one of the more favorable times as days begin to shorten. This month sits comfortably between summer's more vibrant sunshine and the harsher, cloudy days of winter, showcasing a transitional quality. Overall, October provides an ideal opportunity for outdoor enthusiasts and nature lovers to experience the crisp autumn air and the stunning natural landscapes amidst a moderate chance of sunshine.
In October, Sisimiut, Greenland experiences a notable reduction in daylight, with only 9 hours illuminating the landscape. This decline continues the downward trend from the summer months, where residents enjoyed a near-constant 23 hours of daylight in June. As the year progresses, the diminishing hours of sunlight serve as a shift from the vibrant summer days towards the long, dark winters, emphasized by November's drop to just 5 hours. Despite the shorter days, October remains a transitional month, casting a beautiful autumnal glow across the region, reminding locals of the brilliance of daylight that lingered just a season before.
As October arrives in Sisimiut, Greenland, the winds begin to pick up, averaging 4.2 m/s (9 mph). This marks a slight increase from the more subdued breezes of summer, where the average dipped as low as 3.3 m/s (7 mph) in May. The transition into autumn sees the winds gradually intensifying, with September's average sitting at 4.0 m/s (9 mph). While October's winds are softer than the gusts of November and December, which soar to 4.3 m/s (10 mph) and 4.8 m/s (11 mph) respectively, they still carry with them the crisp bite of winter's approach. This consistent trend of rising wind speeds through the fall months serves as a reminder of the changing seasons and the dynamic atmosphere surrounding this picturesque Greenlandic town.
Weather in Sisimiut varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Sisimiut, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January present significantly different weather conditions. In October, temperatures range from a low of -12°C (11°F) to a maximum of 7°C (44°F), with an average temperature around -1°C (30°F). The month experiences approximately 75 mm (2.9 in) of precipitation over 11 days, accompanied by a humidity level of 86%. In contrast, January is much colder, with temperatures dropping to a minimum of -23°C (-8°F) and an average of -12°C (11°F), reaching a maximum of only 2°C (37°F). Precipitation decreases to 49 mm (1.9 in) over 12 days, while humidity rises to a higher level of 96%. For a detailed look at January's weather in Sisimiut, visit Sisimiut weather in January.
October and February present contrasting weather conditions. In October, temperatures range from a chilly -12°C (11°F) to a milder maximum of 7°C (44°F), with an average of -1°C (30°F) and 75 mm (2.9 in) of precipitation over 11 days. The humidity sits at a relatively high 86%, contributing to the cool, damp feel of the season. By contrast, February is much colder, with temperatures dipping as low as -30°C (-21°F) and averaging -17°C (2°F), peaking at just -3°C (27°F). Precipitation is less frequent in February, amounting to only 19 mm (0.8 in) over 5 days, but the humidity is even higher at 93%, creating an intensely frigid atmosphere. For a closer look at February weather specifics, check out Sisimiut weather in February.
When comparing the weather in October and March, October tends to be milder, with average temperatures around -1°C (30°F) and a maximum of 7°C (44°F), while March is significantly colder, with an average temperature of -13°C (8°F) and a maximum of 0°C (32°F). October experiences more precipitation, totaling 75 mm (2.9 in) over about 11 days, while March sees less at 44 mm (1.8 in) spread across 10 days. Additionally, the humidity in March is slightly higher at 94%, compared to 86% in October, which contributes to the chilliness felt during the early spring months. For more details on March weather, you can visit Sisimiut weather in March.
In comparing the weather of October and April, we find notable differences in temperatures and overall conditions. October has a milder temperature range with a minimum of -12°C (11°F) and an average of -1°C (30°F), while April experiences colder temperatures, dipping as low as -20°C (-3°F) and averaging -6°C (21°F). Both months see a similar amount of precipitation, with October receiving 75 mm (2.9 in) over approximately 11 days and April slightly less at 51 mm (2.0 in) over 10 days. Humidity also remains high in both months, with October at 86% and April at 89%. For further details on April’s weather, you can check Sisimiut weather in April.
October and May in Sisimiut present quite distinct weather patterns, though both months share similar average temperatures hovering around -1°C (30°F). In October, temperatures can drop to a chilly minimum of -12°C (11°F), reaching a maximum of 7°C (44°F), while May sees slightly warmer conditions with minimum temperatures of -11°C (12°F) and a maximum of 9°C (48°F). Precipitation also varies significantly; October experiences more rain, totaling 75 mm (2.9 in) over 11 days, compared to May's lighter rain of 21 mm (0.8 in) over just 4 days. Despite the modest differences in humidity—86% in October and 87% in May—it's clear that October welcomes more moisture and gloom, whereas May begins to hint at the approaching summer. For more details on the weather specifics during this month, you can visit Sisimiut weather in May.
When comparing the weather in October and June, notable differences emerge in both temperature and precipitation. October experiences colder temperatures, with a minimum of -12°C (11°F) and an average of -1°C (30°F), while June is milder, with a minimum of -2°C (28°F) and an average of 3°C (38°F). Additionally, October sees more precipitation, totaling 75 mm (2.9 in) over 11 days, compared to June's 35 mm (1.4 in) over 9 days. Despite the slightly lower humidity in June at 82% versus October's 86%, both months present a contrast in climate, emphasizing October's wintry conditions and June's cooler spring-like atmosphere. For more detailed information on June weather, you can visit Sisimiut weather in June.
In comparing the weather of October and July, October is notably colder, with average temperatures hovering around -1°C (30°F) and a maximum reaching only 7°C (44°F). In contrast, July offers milder conditions, with average temperatures of 6°C (43°F) and a high of 14°C (57°F). Both months experience similar levels of precipitation, approximately 75-80 mm (2.9-3.2 in) over 11 days, but October has a higher humidity at 86%, compared to July's 81%. For more details on July conditions specifically, you can check this link: Sisimiut weather in July.
October and August present notably different weather conditions. In October, temperatures drop significantly, with a minimum of -12°C (11°F) and an average of -1°C (30°F), compared to August's warmer range of 2°C (35°F) to a maximum of 13°C (56°F). While both months experience precipitation over 11 days, October sees slightly more rain at 75 mm (2.9 in), compared to August's 66 mm (2.6 in). Humidity levels are fairly high in both months, but October's 86% is marginally lower than August's 89%. For a deeper look at August weather, visit Sisimiut weather in August.
October weather in Sisimiut is markedly colder than September, with average temperatures dropping from 3°C (37°F) in September to a chilly -1°C (30°F) in October. While both months experience significant humidity, October's average humidity sits at 86%, slightly higher than September's 85%. Precipitation also increases in October, with 75 mm (2.9 in) recorded over 11 days, compared to 53 mm (2.1 in) over 10 days in September. This shift signals a transition into more wintry conditions as October progresses. For a detailed look at September's weather, visit Sisimiut weather in September.
In comparing the weather between October and November, October tends to be slightly milder with average temperatures hovering around -1°C (30°F) and maximums reaching 7°C (44°F). However, November sees a noticeable drop in temperatures, with averages around -6°C (22°F) and a maximum of only 4°C (39°F), reflecting a deeper onset of winter. Precipitation levels remain consistent in both months at approximately 75 mm, but November experiences a few more wet days, totaling 14 compared to October's 11. Humidity also rises in November, reaching 89% compared to October's 86%. For a more detailed look at November's weather, you can visit Sisimiut weather in November.
In October, temperatures in Sisimiut range from a minimum of -12°C (11°F) to a maximum of 7°C (44°F), with an average of -1°C (30°F) and a precipitation of 75 mm (2.9 in) over about 11 days. The humidity is relatively high at 86%, contributing to a chilly atmosphere. By December, the weather takes a turn for the colder, with temperatures dropping further to a minimum of -16°C (4°F) and an average of -7°C (19°F). Maximum temperatures reach only 5°C (41°F), and while precipitation is slightly lower at 70 mm (2.8 in), it occurs over more days, totaling 14. Additionally, humidity increases to 90%, making the cold feel even more pronounced. For more details, check out Sisimiut weather in December.
As October sets in, Sisimiut experiences a notable shift in weather, characterized by cooler temperatures and increased precipitation compared to preceding months. The average chill of -1°C heralds the arrival of early winter, while the humidity levels peak at 86%, leaving the air crisp and refreshing. The frequent rain, accumulating to 75 mm over roughly 11 days, transforms the landscape into a dramatic interplay of autumn hues and moisture-laden skies. This transition marks a departure from the milder summer months, inviting visitors to experience the unique beauty and atmosphere of Sisimiut during this time. For more detailed insights, explore the Sisimiut Climate.