Last updated: August 21, 2025
In Hanko, Finland, October brings a charming yet challenging climate as temperatures gradually cool, with a maximum of 16°C (61°F) and dipping to a chilly 1°C (35°F) at night. The average temperature settles around 10°C (49°F), creating a crisp atmosphere perfect for autumn strolls. However, anticipate frequent rainfall, with 123 mm (4.8 in) of precipitation spread over 19 days, and a notable humidity level of 90%. This combination results in a moody landscape that highlights the beauty of fall while urging residents and visitors alike to prepare for idyllic yet unpredictable weather.
As October rolls into Hanko, Finland, the temperatures begin to shift noticeably, signaling the transition from the mild autumn to the chill of winter. With minimums around 1°C (35°F) and maximums peaking at 16°C (61°F), the month presents a refreshing crispness that invites outdoor exploration. The average temperature of 10°C (49°F) marks a cool, gentle reminder of the changing seasons. Compared to the warmer September, October brings a discernible drop in warmth, as the days shorten and the atmosphere takes on a more serene, tranquil feeling. Sweaters come out of storage and the vibrant autumn foliage offers a stunning backdrop for those enjoying the beauty of nature during this picturesque time of year.
October in Hanko, Finland, marks a significant increase in precipitation, with an impressive total of 123 mm (4.8 in) recorded over 19 days. This surge makes October one of the wettest months, sharply contrasting with the dryer spells earlier in the year. As autumn settles in, the rainfall is nearly double that of September's 71 mm (2.8 in), setting a tone for the impending winter. The clustering of rainy days highlights a shift towards more persistent weather patterns, as the vibrant fall foliage is often accompanied by overcast skies and frequent showers, creating a picturesque yet damp backdrop for the season.
October in Hanko, Finland, sees a relative uptick in humidity, sitting at 90%, reminiscent of the dampness found in the earlier months of the year. This slight increase follows a trend where humidity starts high in the winter, gradually dropping to a low of 76% in May before rising again through the summer. As the year progresses into autumn, humidity levels hover around the mid-to-high 80s, peaking again in October as the chill sets in. The consistent presence of moisture in the air, especially as the temperatures cool, prepares the coastal town for the onset of winter, creating a unique atmosphere that locals and visitors alike experience as the foliage transitions and the sea air becomes brisker.
As autumn settles in Hanko, Finland, the UV Index takes a noticeable dip, showing a value of 2 in October, corresponding to a low exposure category. This marks a gradual decline from the summer highs of 7 in June and July, which required careful sun protection due to their high burn potential. With the burn time increasing to 45 minutes, there’s less urgency to seek shade compared to earlier months. Overall, October signals a comforting return to lower UV levels, allowing residents and visitors to enjoy the crisp autumn air with peace of mind. For more detailed insights about UV exposure throughout the year, visit Hanko UV Index.
UV Risk Categories
In October, Hanko, Finland, enjoys a moderate 215 hours of sunshine, marking a noticeable decline from the vibrant summer months. Following the brilliance of August and September, where daylight hours peaked at 418 and 319 respectively, October signals the onset of autumn with shorter days and fewer sunlight hours. This gradual decrease, while substantial compared to the winter months, reflects the transition into the darker half of the year, as November and December bring even less light at 135 and 73 hours. Nevertheless, October's sunny days still offer a beautiful backdrop for enjoying the stunning fall scenery, making it a cherished time for locals and visitors alike.
In Hanko, Finland, October marks a notable shift in the likelihood of sunny weather, as the chance of sunshine drops to 22%. Following the vibrant summer months, where July peaks at 61%, the arrival of autumn sees a gradual decline in sunny days, with September experiencing 31% sunshine. While October offers a retreat into cozy fall ambiance, the diminishing sunlight hints at the chill of winter approaching, making those rare sunny breaks in this month all the more precious. As the days grow shorter, the consistent pattern of decreasing sunshine invites both reflection and anticipation for the winter months ahead.
As autumn settles into Hanko, Finland, October brings a notable transition in daylight duration, offering about 10 hours of sunlight. This decline marks a shift from the vibrant, sun-soaked days of summer, where June peaks at a remarkable 18 hours of daylight. The month of October continues the downward trend initiated in August, as daylight diminishes further from 12 hours in September. While the days grow shorter, October's light still invites outdoor explorations, capturing the beauty of autumn's palette before the depths of winter set in, with November bringing just 7 hours of daylight. This rhythm of changing light not only defines Hanko's seasonal character but also prepares its residents for the cozy months ahead.
As October sweeps into Hanko, Finland, it heralds the arrival of brisk breezes, with average wind speeds peaking at 9.3 m/s (21 mph). This notable increase marks a seasonal shift from the milder winds of summer, where averages hovered around 5.8 m/s (13 mph) in July and 4.8 m/s (11 mph) in June. The transition is palpable; September’s wind speeds of 7.6 m/s (17 mph) provide a prelude to the autumn gusts that invigorate the landscape. As nature readies itself for winter, the October winds stir not only the fallen leaves but also a sense of change, reminding us that the dynamic dance of seasons is in full swing.
Weather in Hanko varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Hanko, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January present a stark contrast in weather patterns. October features milder temperatures, with a minimum of 1°C and an average of 10°C, while January experiences much colder conditions, with lows plunging to -13°C and an average of just 1°C. Additionally, October sees substantial precipitation at 123 mm over 19 days, making it a wetter month compared to January, which offers lower precipitation levels of 56 mm over 14 days. Despite January’s chill, humidity levels are slightly higher, hovering around 92% compared to October’s 90%. For a more detailed look at January conditions, check out Hanko weather in January.
October and February present quite contrasting weather conditions. In October, the temperatures range from a chilly min of 1°C (35°F) to a more moderate max of 16°C (61°F), with an average of 10°C (49°F). This month also sees significant precipitation, averaging 123 mm (4.8 in) over 19 days, coupled with high humidity at 90%. In contrast, February brings much colder temperatures, with lows plunging to -13°C (10°F) and a maximum of only 6°C (43°F), averaging -1°C (31°F). The precipitation is notably lower in February at 49 mm (1.9 in) over 11 days, while humidity remains high at 91%. For a deeper dive into February's specific conditions, you can check out this link: Hanko weather in February.
When comparing the weather in October and March, it's clear that both months experience high humidity levels of 90%. However, October is generally milder, with average temperatures ranging from a chilly 1°C (35°F) to a maximum of 16°C (61°F), while March is cooler, featuring temperatures that can drop as low as -10°C (13°F) and peak at only 7°C (44°F). Additionally, October sees significantly more precipitation, totaling 123 mm (4.8 inches) over 19 days, compared to March's 50 mm (2.0 inches) over just 10 days. For those interested in more details about the weather specifically in Hanko during March, you can check this link: Hanko weather in March.
October and April present markedly different weather conditions. In October, temperatures range from a chilly 1°C (35°F) to a mild 16°C (61°F), with an average of 10°C (49°F). The month is characterized by significant precipitation, totaling 123 mm (4.8 in) over about 19 days, coupled with high humidity at 90%. In contrast, April experiences even colder temperatures, with a minimum of -2°C (29°F) and a maximum of 9°C (49°F), averaging just 3°C (38°F). Rainfall is considerably less in April, with only 28 mm (1.1 in) over around 7 days, and a slightly lower humidity level of 87%. For more detailed insights on April weather, you can check Hanko weather in April.
October and May showcase stark contrasts in weather. In October, temperatures typically range from a chilly 1°C (35°F) at night to a mild 16°C (61°F) during the day, coupled with a high average humidity of 90%. This month also sees considerable precipitation, with 123 mm (4.8 in) falling over 19 days, making it one of the wetter months of the year. In comparison, May experiences similar minimum temperatures of 1°C (35°F), but boasts a warmer average of 8°C (46°F) and a maximum of 18°C (64°F). The month is considerably drier, receiving only 36 mm (1.4 in) of rain over just 7 days, and features a lower humidity of 76%. For more detailed insights into May's weather, you can visit Hanko weather in May.
October and June exhibit stark contrasts in weather conditions. In October, temperatures fluctuate between a chilly minimum of 1°C (35°F) and a mild maximum of 16°C (61°F), with an average temperature of 10°C (49°F). The month experiences significant rainfall, accumulating 123 mm (4.8 in) over 19 days, and humidity levels are notably high at 90%. In contrast, June boasts warmer temperatures, with a minimum of 6°C (44°F) and a pleasant maximum of 22°C (73°F), averaging around 14°C (57°F). Rainfall is considerably lower, totaling just 37 mm (1.5 in) over only 6 days, and humidity stands at a more moderate 80%. For more details, you can check Hanko weather in June.
When comparing the weather in October to that of July, notable differences emerge. October experiences significantly cooler temperatures, with a minimum of 1°C (35°F) and an average of 10°C (49°F), while July boasts much warmer conditions, having a minimum of 12°C (53°F) and an average of 17°C (63°F). In terms of precipitation, October is notably wetter, receiving 123 mm (4.8 in) over 19 days, whereas July only sees 57 mm (2.2 in) over 8 days. Additionally, October's humidity is higher at 90%, compared to July’s 80%. For more detailed insights on July weather, check Hanko weather in July.
In comparing the weather between October and August, a notable difference in temperature is evident. October features a minimum temperature of 1°C (35°F) and an average of 10°C (49°F), while August offers a much warmer minimum of 11°C (51°F) and an average of 17°C (63°F). Additionally, October experiences more precipitation, with 123 mm (4.8 in) falling over 19 days, compared to August's 94 mm (3.7 in) over 13 days. Humidity levels are also higher in October at 90%, compared to 83% in August. For more detailed insights, check out Hanko weather in August.
In September, the weather tends to be milder and more pleasant, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 20°C (68°F) and an average of 14°C (57°F). In contrast, October brings a notable drop in temperatures, with a minimum of just 1°C (35°F) and an average of 10°C (49°F), peaking at 16°C (61°F). Additionally, October is considerably wetter, with precipitation of 123 mm (4.8 in) occurring over 19 days, compared to September's 71 mm (2.8 in) over 14 days. Humidity also increases slightly in October, reaching 90% versus September's 87%. For more details on September weather, you can visit Hanko weather in September.
October and November display distinct shifts in weather patterns as autumn progresses. In October, temperatures range from a minimum of 1°C (35°F) to a maximum of 16°C (61°F), with an average of 10°C (49°F). The month sees significant rainfall, with 123 mm (4.8 in) of precipitation over 19 days and humidity levels at 90%. In contrast, November experiences colder temperatures, with a minimum of -3°C (26°F) and a maximum of 13°C (56°F), averaging 6°C (43°F). Precipitation decreases to 82 mm (3.2 in) over 17 days, accompanied by slightly higher humidity at 91%. For more detailed weather insights, you can visit Hanko weather in November.
In October, the weather tends to be milder with average temperatures ranging from a minimum of 1°C (35°F) to a maximum of 16°C (61°F). The month experiences significant rainfall, totaling 123 mm (4.8 in) over 19 days, alongside a high humidity level of 90%. In contrast, December brings a notable drop in temperatures, with averages falling between -9°C (17°F) and 8°C (46°F). Although precipitation decreases to 80 mm (3.1 in), it still occurs over the same number of days, maintaining the humidity at 90%. For a more detailed look at December weather in Hanko, you can visit Hanko weather in December.
As October settles in Hanko, the transition from the warmer months becomes evident. With temperatures gradually dropping and an increase in precipitation, this month stands out with its frequent showers and heightened humidity levels. While the lingering autumn chill brings cooler days, it also offers a unique charm to the coastal town, as the landscape transforms in vibrant hues. This weather shift from the milder summer and the cold winter prepares Hanko for the upcoming winter months. For a deeper dive into the nuances of Hanko's climate throughout the year, visit Hanko Climate.