Fukushima Prefecture Free Weather Report 2025

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🇯🇵 Fukushima Prefecture Weather Report – Month-by-Month Overview

🌨️ January
Cold and snowy, especially in inland and mountainous areas like Aizu. Fukushima City averages −2 to 5°C. Snowfall is frequent in the west, while coastal areas like Iwaki are milder and less snowy.

🌨️ February
Still wintry. Highs reach 4–8°C, with lows near freezing. Snow continues inland, while coastal zones may see sleet. Sunshine increases slightly, but mornings remain frosty.

🌧️ March
Spring begins. Temperatures rise to 8–14°C. Snow melts in lower regions, replaced by rain. Plum blossoms bloom, and foggy mornings are common in valleys.

🌸 April
Mild and blooming. Highs reach 14–20°C. Cherry blossoms peak across the prefecture, especially in Hanamiyama Park and along the Shirakawa River. Rain showers alternate with sunny spells.

🌼 May
Warm and pleasant. Temperatures climb to 18–24°C. Rainfall is light, and skies are mostly clear. Ideal for hiking in Bandai-Asahi National Park and countryside travel.

🌦️ June
Start of the rainy season. Highs range from 22–27°C. Humidity rises, and afternoon showers are frequent. Rivers swell, and vegetation flourishes.

🌧️ July
Hot and wet. Temperatures reach 26–31°C. Rainfall peaks, and thunderstorms are common. Inland areas feel muggy, while coastal towns offer slight relief.

☀️ August
Still hot. Highs remain between 27–32°C. Rain decreases slightly, and sunshine dominates. Summer festivals and beach visits are popular across the region.

🌧️ September
Transition to autumn. Temperatures ease to 23–29°C. Rain returns due to typhoon activity. Winds pick up, and nights begin to cool. Foliage starts to shift.

🍂 October
Cooler and clearer. Highs drop to 17–24°C. Rainfall decreases, and autumn colors peak in forests and temple grounds. Crisp air makes it ideal for travel.

🌫️ November
Chilly and damp. Highs hover around 12–18°C, with lows near 6°C. Rain is frequent, and fog blankets valleys. Early frosts appear in higher elevations.

🌨️ December
Winter returns. Temperatures range from 3–9°C. Snowfall resumes inland, while coastal towns see more rain than snow. Festive lights brighten city streets.

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Weather in Fukushima, Japan: A Month-by-Month AnalysisFukushima, Japan, located in the northern part of the country, experiences a humid continental climate (Köppen classification Dfb) with distinct seasonal variations. The region is characterized by cold, snowy winters and warm, humid summers, with significant precipitation throughout the year. This report provides a detailed month-by-month analysis of Fukushima’s weather, including temperature, precipitation, humidity, sunshine hours, and seasonal characteristics, based on historical climate data and recent observations. The information draws from reliable sources, including weather data for Fukushima City and nearby areas, to offer a comprehensive overview for residents, travelers, and researchers.JanuaryJanuary is Fukushima’s coldest month, marking the peak of winter. Average daytime temperatures hover around 3.4°C (38.2°F), with nighttime lows dropping to -4.2°C (24.4°F). Record lows can reach as far as -18°C (0°F), making it a frigid period. Precipitation averages 73 mm (2.9 inches), with snowfall being significant, accumulating around 4.7 inches over a 31-day period. Snowy days occur approximately 7 times, contributing to the region’s winter sports appeal, particularly in mountainous areas like Kitashiobara. Humidity levels are high at 78%, and cloud cover averages 35%, resulting in partly cloudy skies. Sunshine hours are limited, averaging 4.9 hours per day, making January one of the least sunny months. The cold and snowy conditions make warm clothing essential, but the clear, crisp days can be ideal for winter activities like skiing.

FebruaryFebruary remains firmly in winter’s grip, with slightly milder conditions than January. Average high temperatures reach 4.5°C (40.1°F), while lows average -3.5°C (25.6°F). Precipitation is at its lowest, averaging 62 mm (2.4 inches), making it the driest month. Snowfall decreases to about 3.8 inches, with fewer snowy days (around 5–8). Humidity drops slightly to 75%, and cloud cover is around 40%, allowing for clearer skies compared to January. Sunshine hours increase marginally to 5.4 hours per day. February’s weather is still poor for outdoor activities, but the reduced precipitation and occasional clear days offer opportunities for winter exploration, especially in areas like Iwaki, where temperatures are slightly higher (up to 8°C).

MarchMarch signals the transition from winter to spring, with average highs rising to 9°C (48.3°F) and lows around -0.2°C (31.6°F). Precipitation increases to 95 mm (3.7 inches), with a mix of rain and occasional snow (1.4 inches of snowfall). The chance of wet days rises to about 8–10 days, with rain becoming more common than snow. Humidity decreases to 70%, the lowest of the year, and cloud cover is around 46%. Sunshine hours improve to 6.5 hours per day, reflecting the clearer part of the year beginning. March’s weather remains generally poor, but the warming trend and longer daylight hours (averaging 12 hours) make it suitable for early spring activities like hanami (cherry blossom viewing) toward the end of the month.

AprilApril brings a noticeable shift to milder conditions, with average highs of 15.4°C (59.7°F) and lows of 5°C (40.9°F). Precipitation rises to 101 mm (4 inches), spread over 9 rainy days, with snowfall becoming negligible (0.2 inches). Cloud cover peaks at 51%, marking the start of the cloudier season. Humidity is around 71%, and sunshine hours increase to 7.7 hours per day. The longer daylight hours (13.2 hours) and moderate temperatures make April a pleasant time for outdoor activities, though occasional showers require preparation. In areas like Koriyama, temperatures can reach 16°C, making it ideal for sightseeing.

MayMay is one of Fukushima’s most pleasant months, with average highs of 20.6°C (69.1°F) and lows of 10.6°C (51°F). Precipitation averages 109 mm (4.3 inches) across 9 days, with no significant snowfall. Humidity rises to 74%, and cloud cover is around 56%. Sunshine hours peak at 8.6 hours per day, the highest of the year, providing ample daylight (14.2 hours). The comfortable temperatures and moderate rainfall make May ideal for exploring Fukushima’s natural attractions, such as its parks and historical sites. Koriyama sees highs around 21°C, marking it as a pleasant destination.

JuneJune marks the onset of summer and the rainy season (baiu), with average highs of 23.6°C (74.5°F) and lows of 15.4°C (59.7°F). Precipitation increases significantly to 142 mm (5.6 inches) over 11 rainy days, reflecting the wetter season’s start. Humidity rises to 81%, and cloud cover peaks at 63%, making it one of the cloudier months. Sunshine hours drop to 7.5 hours per day due to frequent overcast skies. Despite the rain, June’s pleasant temperatures (up to 24°C in Shirakawa) make it suitable for indoor activities or outdoor exploration with proper gear. The long daylight hours (14.7 hours) enhance opportunities for travel.

JulyJuly is the wettest month, with average rainfall of 185 mm (7.3 inches) spread over 14 rainy days, coinciding with the peak of the rainy season. Average highs reach 26.8°C (80.3°F), with lows at 19.7°C (67.4°F). Humidity peaks at 86%, and cloud cover is at its highest (64%), making skies mostly cloudy. Sunshine hours drop to 6.9 hours per day, the lowest of the year. The warm, muggy conditions can be uncomfortable, but temperatures in areas like Shirakawa (up to 28°C) support summer festivals and outdoor events when rain subsides. July’s heavy precipitation requires waterproof clothing.

AugustAugust is Fukushima’s hottest month, with average highs of 27.9°C (82.2°F) and lows of 20.8°C (69.5°F). Recent records indicate extreme heat, with temperatures reaching 41.8°C (107.2°F) in nearby areas like Isesaki in 2025, though Fukushima typically sees highs around 29°C in Koriyama. Precipitation remains high at 170 mm (6.7 inches) over 12 days, with humidity at 85%. Cloud cover decreases slightly to 56%, and sunshine hours are 6.8 hours per day. The warm, humid conditions are ideal for summer festivals, but heat precautions are necessary due to high wet-bulb temperatures.

SeptemberSeptember sees a cooling trend, with average highs of 24°C (75.2°F) and lows of 17°C (62.6°F). Precipitation is high at 177 mm (7 inches) over 11 days, as the rainy season lingers. Humidity remains at 85%, and cloud cover is 56%. Sunshine hours are 6.1 hours per day. The pleasant temperatures (up to 25°C in Koriyama) make September a good time for sightseeing, though rain gear is essential. The transition to autumn begins, with foliage starting to change in higher elevations.

OctoberOctober offers pleasant weather, with average highs of 18.4°C (65.1°F) and lows of 10.5°C (50.9°F). Precipitation decreases to 148 mm (5.8 inches) over 8 days, and humidity drops to 81%. Cloud cover reduces to 43%, marking the clearer season’s start. Sunshine hours are 5.9 hours per day. The comfortable temperatures and vibrant autumn foliage make October one of the best months to visit, particularly in areas like Shirakawa.

NovemberNovember brings cooler weather, with average highs of 12.6°C (54.7°F) and lows of 4.3°C (39.8°F). Precipitation drops to 77 mm (3 inches) over 8 days, with minimal snowfall (0.2 inches). Humidity is 80%, and cloud cover is 36%. Sunshine hours are 5.4 hours per day. The crisp weather is ideal for outdoor activities, though temperatures in Kitashiobara can dip to 11°C.

DecemberDecember ushers in winter, with average highs of 6.5°C (43.7°F) and lows of -1°C (30.3°F). Precipitation is low at 64 mm (2.5 inches) over 9 days, with snowfall increasing to 2 inches. Humidity is 78%, and cloud cover is 33%, the clearest of the year. Sunshine hours are 5 hours per day. The cold, snowy conditions signal the start of winter sports season.

ConclusionFukushima’s climate offers a diverse range of conditions, from snowy winters to warm, wet summers. May, June, and October are the most pleasant months for travel, with moderate temperatures and manageable precipitation. July and August are hot and humid, ideal for festivals but requiring heat precautions. Winter months (December–February) attract snow sports enthusiasts, while spring and autumn provide scenic beauty. The region’s high precipitation (1450 mm annually) and humidity necessitate preparation year-round. For precise planning, refer to sources like Weather Spark or Climate-Data.org for detailed data.

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