Last updated: March 17, 2025
In Keflavik, Iceland, October weather presents a captivating mix of chill and moisture, making it an intriguing time to experience the unique landscapes of the region. With maximum temperatures reaching 12°C (53°F) and an average of 6°C (44°F), the crisp air signals the transition into winter. However, brisk conditions can bring minimum temperatures plummeting to -1°C (30°F), so visitors should prepare for the cold. The month sees 18 days of precipitation, accumulating to 119 mm (4.7 in), contributing to the lush, vibrant scenery that characterizes this stunning locale. With an average humidity of 85%, the air feels alive, enhancing the dramatic charm of Keflavik during this special autumn period.
In October, Keflavik, Iceland, transitions into a crisp autumn atmosphere, marked by a noticeable drop in temperatures. The month starts off with minimums averaging around -1°C (30°F) and peaks at 12°C (53°F). With an overall average temperature of 6°C (44°F), October experiences a comforting shift from the summer warmth. This cooling trend is a precursor to the chillier months ahead, setting the stage for the winter frost that follows in November, where temperatures slide even further. As daylight shortens, visitors can enjoy the stunning fall foliage while preparing for the wintry landscapes that define the Icelandic experience.
In October, Keflavik experiences an average precipitation of 119 mm (4.7 in), consistent with the rainy pattern established in previous months. With 18 days of rain, October maintains a steady rhythm, reflective of the increasing trend seen since September's peak of 171 mm. This month bridges the transition into the deeper autumn, where the weather can often be unpredictable. Compared to the drier summer months, October stands out for its balanced yet persistent rainfall, suggesting a time where umbrellas and raincoats become essential for daily life. As autumn sets in, the frequent showers become a hallmark of Keflavik's charm, inviting visitors to experience the moody beauty of Icelandic landscapes under a veil of cloud and rain.
In Keflavik, Iceland, October's humidity holds steady at 85%, reflecting a consistent trend as the year transitions towards winter. This level of humidity is similar to the preceding months, particularly in September, which also recorded an 85% mark. Interestingly, the summer months of July and August experienced the highest humidity levels, peaking at 87% and 88%, respectively. As the seasons shift, humidity shows a marked fluctuation, dipping slightly in November to 81%. Overall, the data suggests a persistent dampness in the air throughout the year, with a slight elevation in the late summer that gradually stabilizes into the autumn months.
In October, Keflavik, Iceland experiences a UV Index of 2, categorized as low, which means the risk of harm from unprotected sun exposure is relatively minimal. This reflects a trend of gradually decreasing UV levels as summer transitions into autumn. Following the peak months of June and July, where the UV Index reached 6 and posed a high exposure risk, the subsequent months saw a decline, aligning with the shorter days and cooler temperatures. With a burn time of 45 minutes, October offers a comfortable cushion for outdoor activities without immediate concern for sunburn. Visitors and locals can enjoy the crisp autumn air while staying mindful of the sun's rays. For more detailed insights, check the full Keflavik UV Index.
UV Risk Categories
In Keflavik, Iceland, the month of October marks a pivotal shift in daylight hours, basking in 146 hours of sunshine. This is a noticeable decrease from the vibrant summer months, where May and June bask in over 340 hours each, highlighting the fleeting warmth of the season. As autumn takes its hold, the sunshine begins to wane, following a pattern set from September's generous 207 hours. While October's hours are brighter than the bleakness of winter months like December, with its meager 28 hours, the gradual decline in daylight serves as a reminder of the encroaching winter, making those bright, crisp October days all the more precious in this starkly beautiful landscape.
In Keflavik, Iceland, the likelihood of enjoying sunny weather in October is marked by a 26% chance, a modest increase compared to the bleak winter months. As summer fades and autumn settles in, there is a slight rebound in sunny prospects from the 12-18% range seen during the preceding months. While the sunny days are still scarce, October stands out as a transitional period, nestled comfortably between the more overcast early autumn months and the brighter, more temperate late spring days in May with a notable 49% chance of sun. This month’s weather offers visitors a unique opportunity to experience the stunning autumn hues, even if sunshine remains a rare companion.
As autumn settles in Keflavik, Iceland, October brings a noticeable shift in daylight duration, offering approximately 9 hours of sunlight. This marks a gradual decline from the vibrant 12 hours of daylight in September, as the days grow shorter leading into winter. The trend reflects a clear pattern: daylight hours increase steadily from January's meager 5 hours to a peak in June with 20 hours, before tapering off through the latter months of the year. October's moderate daylight serves as a gentle transition, inviting residents and visitors alike to savor the cozy charm of the Icelandic fall while preparing for the long, dark winter ahead.
As October unfolds in Keflavik, Iceland, the wind begins to build in intensity with an average speed of 6.8 m/s (15 mph), slightly brisker than the gentle breezes of late summer. Following the relative calm of August and September, where the winds softened to around 4.8 m/s (11 mph), October marks a transition back to the more blustery patterns that characterize the autumn months. Notably, the wind speed in October is a prelude to the increasing gales of late fall, as November introduces a rise back to 7.1 m/s (16 mph). This trend underscores a seasonal shift, where the winds dance playfully through the changing leaves, hinting at the robust winter ahead. The October winds in Keflavik are not merely a meteorological detail; they embody the vibrant essence of Iceland's dynamic climate.
The weather in Keflavik changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Keflavik and find detailed weather information for every month.
When comparing the weather in October and January, October tends to be milder, with average temperatures around 6°C (44°F) compared to January's colder average of 2°C (36°F). The minimum temperatures also reflect this difference, with October dipping to a minimum of -1°C (30°F) while January can drop as low as -6°C (22°F). Both months experience similar levels of precipitation, with October receiving 119 mm (4.7 in) over 18 days, and January seeing 117 mm (4.6 in) over 17 days. However, October is slightly more humid at 85%, compared to January's 80%. For more detailed information about January weather, you can visit Keflavik weather in January.
October and February present notably different weather patterns. In October, temperatures range from a minimum of -1°C (30°F) to a maximum of 12°C (53°F), with an average of 6°C (44°F). The month experiences 119 mm (4.7 in) of precipitation over 18 days, coupled with high humidity at 85%. In contrast, February is colder, with a minimum temperature of -9°C (16°F), an average of 2°C (36°F), and a maximum of 8°C (47°F). Precipitation slightly increases to 126 mm (5.0 in) over 19 days, but humidity is lower at 77%. For a detailed look at February weather, visit Keflavik weather in February.
When comparing the weather in October and March, a few notable differences emerge. October typically features milder temperatures, with averages around 6°C (44°F) and a maximum of 12°C (53°F), while March sees cooler conditions, with an average of 2°C (37°F) and a maximum of 8°C (47°F). Precipitation levels are similar in both months, with October receiving 119 mm (4.7 in) and March slightly less at 110 mm (4.3 in), although both months experience rain on approximately 18 days. Humidity is high in both months, but October is slightly more humid at 85% compared to March's 82%. For more detailed insights into March weather, you can check Keflavik weather in March.
When comparing the weather between October and April, both months experience similar average temperatures, with October slightly warmer at an average of 6°C (44°F) compared to April's 5°C (41°F). However, April can be colder at night, with a minimum temperature of -7°C (20°F), while October rarely drops below freezing, with a minimum of -1°C (30°F). Precipitation is quite similar, with October receiving 119 mm (4.7 in) and April slightly higher at 133 mm (5.2 in), both over approximately 18 rainy days. Interestingly, April has slightly lower humidity levels at 80% compared to October's 85%. For a more detailed comparison of weather patterns, check out Keflavik weather in April.
In comparing the weather in October and May, both months feature similar maximum temperatures, reaching around 12°C (54°F). However, October tends to be cooler overall, with an average temperature of 6°C (44°F) compared to May's 7°C (44°F). Precipitation levels are also quite close, with October receiving 119 mm (4.7 in) over 18 days, while May has slightly less at 115 mm (4.5 in) across 16 days. Both months experience high humidity at 85%, but October's chillier temperatures can make the dampness feel more pronounced. For those interested in more details about May's climate, you can check out Keflavik weather in May.
October weather is characterized by cooler temperatures, with a minimum of -1°C (30°F) and an average of 6°C (44°F), compared to June's milder conditions where temperatures range from a minimum of 4°C (39°F) to an average of 9°C (48°F). While both months experience high humidity at 85%, October sees more precipitation, with 119 mm (4.7 in) over 18 days, versus June’s 87 mm (3.4 in) spread across 15 days. This difference in precipitation highlights October's tendency for wetter, chillier weather compared to the comparatively drier and warmer June. For more details, you can check Keflavik weather in June.
In comparing the weather of October and July, significant differences emerge. October experiences much cooler temperatures, with an average of 6°C (44°F), peaking at 12°C (53°F), whereas July offers a milder climate with temperatures averaging 11°C (52°F) and reaching up to 19°C (66°F). Moreover, October sees greater precipitation, totaling 119 mm (4.7 in) over 18 days, compared to July's 78 mm (3.1 in) across the same number of days. Humidity levels in both months are similar, with October at 85% and July at 87%, creating a damp and cool atmosphere in October versus the relatively warm and humid conditions in July. For further details on July weather, visit Keflavik weather in July.
In comparing the weather of October and August, we see a notable shift towards cooler and wetter conditions in October. October features a minimum temperature of -1°C (30°F) and an average of 6°C (44°F), while August maintains milder temperatures, ranging from a minimum of 7°C (45°F) to an average of 11°C (52°F). In terms of precipitation, October is significantly wetter, with 119 mm (4.7 in) falling over 18 days, compared to August's 89 mm (3.5 in) over just 13 days. Humidity levels are slightly lower in August at 88%, compared to October's 85%, making the latter feel more brisk and damp. For more detailed insights, you can visit Keflavik weather in August.
October's weather tends to be cooler than that of September, with average temperatures dropping from 9°C (48°F) in September to 6°C (44°F) in October. The minimum temperatures also dip below freezing in October, reaching a low of -1°C (30°F), whereas September's minimum is a milder 1°C (34°F). Precipitation remains significant in both months, with October receiving 119 mm (4.7 in) over 18 days compared to September's 171 mm (6.7 in) over 21 days. Despite the increase in rainfall days in September, humidity levels are consistent at 85% throughout both months. For more detailed insights on September's weather, you can visit Keflavik weather in September.
In comparing the weather of October and November, we see a gradual drop in temperatures. October typically ranges from a minimum of -1°C (30°F) to a maximum of 12°C (53°F), with an average temperature of 6°C (44°F). In contrast, November sees a slightly colder range, with minimum temperatures dropping to -4°C (25°F) and a maximum of 10°C (51°F), averaging around 4°C (39°F). Both months experience similar precipitation levels of 119 mm (4.7 in) over approximately 18 days, although November has a slightly lower humidity level at 81% compared to October's 85%. For a closer look at weather specifics during this time, you can visit Keflavik weather in November.
In October, temperatures range from a chilly -1°C (30°F) to a mild 12°C (53°F), with an average of 6°C (44°F), while December experiences even colder conditions, with temperatures dropping to a minimum of -6°C (21°F) and a maximum of 9°C (49°F). Both months see similar levels of precipitation, totaling 119 mm (4.7 in) over approximately 18 days; however, October has a higher humidity at 85%, compared to December's 80%. For more detailed information on the weather conditions in December, you can visit Keflavik weather in December.
As October settles in Keflavik, the weather transitions into a crisp embrace, marked by cooler temperatures and increased precipitation compared to the milder months of summer. With average highs dipping to around 6°C (44°F), the chill in the air is a stark reminder that winter is on the horizon. This month also witnesses a significant uptick in humidity, hovering around 85%, which contributes to the frequent rain, with 18 days experiencing measurable precipitation. As you explore the dynamic climate of this coastal town, you'll find October's blend of brisk air and vibrant landscapes offers a unique charm, inviting adventurers to experience Iceland's beauty in a whole new light. For more detailed insights on the weather patterns throughout the year, check out Keflavik Climate.