Last updated: August 21, 2025
In October, Naantali, Finland transforms into a captivating autumn landscape, where average temperatures hover around 7°C (46°F), peaking at a mild 17°C (62°F) but occasionally dipping to a chilly -5°C (23°F). The month is marked by significant precipitation, accumulating to 86 mm (3.4 in) over 17 rainy days, contributing to the region's lush scenery. This time of year brings a high humidity level of 90%, creating a crisp, invigorating atmosphere that showcases the stunning hues of fall while inviting locals and visitors alike to relish in the seasonal beauty.
In October, Naantali, Finland, experiences a notable shift as summer yields to autumn. The temperatures begin to dip, with minimums around -5°C (23°F), providing a crisp, cooler atmosphere that hints at the approaching winter. The average temperature settles at 7°C (46°F), offering a refreshing, brisk climate perfect for enjoying the vibrant fall foliage. Daytime highs can reach up to 17°C (62°F), making for pleasant days, yet as the month progresses, the cool nights become more pronounced. This trend illustrates the transition from the warm embrace of summer, with temperatures now significantly lower than the previous months, setting the stage for the chilling winter ahead.
In October, Naantali, Finland experiences a significant shift in precipitation patterns, receiving 86 mm (3.4 in) of rainfall over the course of 17 days. This marks one of the wetter months of the year, with rainfall surpassing both September and August’s totals. The uptick in precipitation highlights a seasonal transition as the days grow shorter and the weather turns cooler, contributing to the vibrant autumnal landscape. This month stands out not just for the volume of rain but also for the increase in rainy days, underscoring a trend towards wetter conditions in the fall that prepares the region for the colder months ahead.
In October, Naantali, Finland experiences a notable rise in humidity, reaching 90%, which aligns closely with the high levels seen in the early winter months of January and February. This increase is a shift from the milder summer months, where humidity dipped to 77% in May and stayed consistent at around 78% through July. As autumn settles in, the transition is characterized by a gradual increase in moisture, peaking in September at 86% before October's surge. This pattern underscores how Naantali's climate shifts dramatically as the year progresses, preparing the region for the chillier, more humid days of fall and winter.
As October rolls into Naantali, Finland, the UV Index settles at a low 2, offering a welcome reprieve after the summer months of higher exposure. With a burn time of 45 minutes, outdoor enthusiasts can enjoy the crisp autumn air without the worry of quick sunburn that often accompanies the intense rays of summer. This trend of decreasing UV levels in autumn contrasts sharply with the peak figures seen in July and August, where the index reached highs of 7, indicating a need for more caution and sun protection. As we transition towards winter, both November and December will see the UV Index drop to 1, maintaining the low exposure category. For more detailed insights, you can explore the Naantali UV Index.
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In October, Naantali enjoys a pleasant shift as daylight begins to wane, offering 211 hours of sunshine, a clear transition from the exuberant brightness of summer. The month stands out as a time when the fading warmth of September's 315 hours of sunlight gives way to the more subdued glow of autumn. As the days shorten, the steady decline from the peak summer months – which boasted 494 hours of sunshine in June – is evident. This decline continues into the colder months, with November and December expected to offer significantly less light, further emphasizing the beauty of October's golden rays before winter's embrace. The rhythmic ebb and flow of sunlight here highlights the cyclical nature of seasonality, creating a unique charm that defines Naantali's October landscape.
In Naantali, Finland, the likelihood of sunny weather takes a noticeable dip in October, with only an 18% chance of sunshine. This marks a decline from the preceding months, where the summer peaks in June and July offer over half of the month bathed in sunlight. The trend reveals a gradual decrease as autumn sets in, with sunny days becoming less frequent as winter approaches. The pattern highlights a contrast to the early months of the year, where percentages remain notably low, culminating in March's 37% before the sunniest stretch in late spring. As October arrives, the days grow shorter and cloudier, emphasizing the transition from the warmth of summer to the crispness of fall in this picturesque Finnish locale.
As October arrives in Naantali, Finland, the days continue their gentle decline toward winter. After basking in the long, sun-drenched days of summer—with up to 18 hours of daylight in June and July—the daylight hours drop to a more subdued 10 hours this month. This transition marks the tail end of autumn, where the golden hues of the shortening days create a picturesque backdrop. Following the vibrant splendor of August's 15 hours and September's 12 hours, October signals a shift in the rhythms of daily life, as the community begins to prepare for the longer nights ahead. With each passing month, the variation in daylight emphasizes the beauty of the changing seasons, inviting residents and visitors alike to embrace the tranquil charm of Naantali's autumn.
As October sweeps into Naantali, Finland, it brings with it a notable increase in wind speed, with an average of 5.3 m/s (12 mph) that stands out from the more gentle breezes of the earlier months. This brisk shift marks a transition from the calmer summer and early autumn winds, highlighting a trend that sees October as the month of the strongest gusts. Compared to the average speeds of 3.3 to 4.5 m/s during the summer and early fall, October's winds invigorate the atmosphere, hinting at the approaching winter months. The fresh, lively air invites both locals and visitors to embrace the invigorating chill as autumn deepens, making it an ideal time to enjoy outdoor activities amidst the stunning seasonal changes.
Weather in Naantali varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Naantali, focusing on differences in temperature, rainfall, humidity, and UV levels.
In October, the weather in Naantali features a milder temperature range, with averages around 7°C (46°F) and daily highs reaching up to 17°C (62°F), while lows can dip to -5°C (23°F). The month experiences considerable precipitation, with about 86 mm (3.4 in) falling over 17 days, accompanied by high humidity levels around 90%. In stark contrast, January brings much colder conditions, with average temperatures around -2°C (29°F), and nighttime lows plummeting to -21°C (-6°F). While January has less overall precipitation at 48 mm (1.9 in) over just 9 days, the humidity remains slightly high at 92%, contributing to the crispness of the winter air. For a closer look at January weather, you can visit Naantali weather in January.
When comparing the weather in October and February, notable differences emerge in both temperature and precipitation. October boasts milder conditions, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 17°C (62°F) and an average of 7°C (46°F). In contrast, February is considerably colder, featuring minimum temperatures of -20°C (-4°F) and a maximum of only 7°C (44°F), resulting in an average temperature of -3°C (27°F). Additionally, October experiences more precipitation, with 86 mm (3.4 in) falling over 17 days, while February sees only 42 mm (1.7 in) over 8 days, yet both months maintain a humidity level of 90%. To learn more about February weather specifically, you can visit Naantali weather in February.
October and March showcase distinctly different weather patterns. In October, temperatures range from a minimum of -5°C (23°F) to a maximum of 17°C (62°F), with an average of 7°C (46°F). The month experiences relatively high precipitation levels at 86 mm (3.4 in) over 17 days and maintains a humidity of 90%. In contrast, March is colder, with temperatures varying from -23°C (-9°F) to a maximum of 11°C (52°F) and an average of 0°C (32°F). Precipitation is lower at 44 mm (1.7 in) across 9 days, with humidity slightly decreased at 89%. For a more detailed look at March weather specifically, you can check out Naantali weather in March.
When comparing the weather in October and April, notable differences emerge. October typically features a milder temperature range with average highs of 17°C (62°F) compared to April's 21°C (70°F) maximum. However, April experiences slightly colder minimum temperatures, dipping to -9°C (16°F), while October's lowest is -5°C (23°F). In terms of precipitation, October is much wetter, receiving 86 mm (3.4 in) over 17 days, whereas April sees only 32 mm (1.3 in) across 9 days. Humidity levels are comparable, with October at 90% and April at 85%. For further details on April weather, you can visit Naantali weather in April.
October and May present contrasting weather experiences. In October, temperatures typically range from a chilly -5°C (23°F) at night to a mild 17°C (62°F) during the day, accompanied by significant precipitation of 86 mm (3.4 in) over 17 days, resulting in high humidity levels of 90%. In contrast, May offers a more temperate climate with minimum temperatures of -4°C (26°F) and a comfortable maximum of 26°C (79°F), along with a total precipitation of 44 mm (1.7 in) spread across just 9 days and a lower humidity of 77%. For a closer look at the weather specifics in May, including temperature and precipitation details, you can check Naantali weather in May.
October and June present stark contrasts in weather. In October, temperatures can drop to a chilly -5°C (23°F) at night, with an average of 7°C (46°F) and a maximum of 17°C (62°F). The month experiences significant precipitation, totaling 86 mm (3.4 in) over 17 days, coupled with high humidity at 90%. In contrast, June offers much milder conditions, with temperatures ranging from a minimum of 3°C (38°F) to a pleasant maximum of 28°C (83°F), averaging around 16°C (61°F). Rainfall in June is considerably less, at 43 mm (1.7 in) over just 7 days, with a lower humidity level of 78%. For more details on June weather, you can check Naantali weather in June.
When comparing the weather of October and July, notable differences emerge. October experiences significantly cooler temperatures, with a minimum of -5°C (23°F) and an average of 7°C (46°F), while July enjoys a warmer climate, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 31°C (89°F). July also boasts higher humidity levels at 78% compared to October's 90%, although October has more precipitation days, totaling 17 compared to July's 11. This results in October receiving 86 mm (3.4 in) of precipitation, while July sees 75 mm (3.0 in) over its shorter rainy period. For more detailed insights, check out Naantali weather in July.
In comparing the weather of October and August, one can see notable differences in temperature and humidity levels. October experiences cooler temperatures, with a minimum of -5°C (23°F) and an average of 7°C (46°F), whereas August's temperatures are much milder, ranging from a minimum of 6°C (43°F) to an average of 17°C (62°F) and peaking at 28°C (83°F). Precipitation levels are fairly similar, with October recording 86 mm over 17 days and August slightly lower at 87 mm across 14 days. Additionally, October has a higher humidity rate of 90% compared to August's 79%, contributing to a more overcast and damp atmosphere. For more details, you can explore Naantali weather in August.
October's weather reflects a notable drop in temperatures compared to September, with average highs falling from 23°C (73°F) to just 17°C (62°F). The minimum temperatures also decline, dipping from -1°C (31°F) in September to -5°C (23°F) in October. Additionally, October experiences more precipitation, with 86 mm (3.4 in) over 17 days, compared to September’s 72 mm (2.8 in) over 12 days. The humidity rises slightly as well, reaching 90% in October, compared to 86% in September. For more detailed information, check out Naantali weather in September.
October and November present a notable shift in weather as autumn deepens. In October, temperatures range from a minimum of -5°C (23°F) to a maximum of 17°C (62°F), with an average of 7°C (46°F). The month sees around 86 mm (3.4 inches) of precipitation spread over 17 days, coupled with a high humidity level of 90%. By November, temperatures drop slightly, with minimums reaching -8°C (17°F) and a maximum of 13°C (56°F), averaging at 4°C (39°F). Precipitation decreases to 59 mm (2.3 inches) over 12 days, while humidity remains relatively high at 91%. The transition from October to November brings cooler temperatures and reduced rainfall, typical of late fall. For more details, you can check Naantali weather in November.
October and December present distinct weather patterns. In October, temperatures range from a chilly -5°C (23°F) at night to a pleasant 17°C (62°F) during the day, with an average of 7°C (46°F). Precipitation is relatively high at 86 mm (3.4 in) over 17 days, while humidity remains at 90%. In contrast, December brings much colder conditions, with temperatures dipping to a low of -18°C (-1°F) and peaking at 7°C (45°F), averaging around 0°C (32°F). The month sees slightly less precipitation at 79 mm (3.1 in) across 15 days, with humidity just a bit lower at 89%. For an in-depth look at December conditions, check out Naantali weather in December.
As October unfolds in Naantali, the weather takes on a more chilly and damp character compared to the preceding months. The temperature starts to dip, marking a transition from the mild autumn warmth, while the high humidity at 90% adds to the crispness in the air. Frequent rain brings about 17 days of precipitation, making October notably wetter than its dryer summer counterparts. Those looking to explore this coastal gem should prepare for the occasional chill, as well as the vibrant hues of autumn foliage that accompany the shift in climate. For a more in-depth look at the seasonal variations, check out Naantali Climate.