Tochigi Prefecture Free Weather Report 2025

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世界逆転宣言！【セカセン！】@sekai_gyakuten

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

🌨️ January
Cold and dry. Utsunomiya averages −2 to 7°C. Snow is rare in lowlands but common in mountainous areas like Nikkō. Skies are often clear, with crisp air and minimal rainfall.

🌨️ February
Still wintry. Highs reach 6–9°C, with lows near freezing. Snow continues in elevated regions. Sunshine increases slightly, but mornings remain frosty.

🌧️ March
Spring begins. Temperatures rise to 9–15°C. Snow melts in lower regions, replaced by rain. Plum blossoms bloom, and foggy mornings are frequent inland.

🌸 April
Mild and blooming. Highs reach 14–20°C. Cherry blossoms peak across the prefecture, especially around Nikkō and Utsunomiya Castle Ruins Park. Rain showers alternate with sunny spells.

🌼 May
Warm and pleasant. Temperatures climb to 18–25°C. Rainfall is light, and skies are mostly clear. Ideal for hiking in the Nasu Highlands and visiting flower parks.

🌦️ June
Start of the rainy season. Highs range from 22–28°C. Humidity rises, and afternoon showers are frequent. Rivers swell, and vegetation flourishes.

🌧️ July
Hot and wet. Temperatures reach 26–32°C. Rainfall peaks, and thunderstorms are common. Inland areas feel muggy, while mountain retreats offer cooler air.

☀️ August
Still hot. Highs remain between 27–33°C. Rain decreases slightly, and sunshine dominates. Summer festivals and lakeside escapes are popular.

🌧️ September
Transition to autumn. Temperatures ease to 23–29°C. Rain returns due to typhoon activity. Nights begin to cool, and 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 dry. Highs hover around 12–18°C, with lows near 6°C. Rain is minimal, and fog blankets valleys. Early frosts appear in higher elevations.

🌨️ December
Winter returns. Temperatures range from 3–9°C. Snowfall resumes in mountainous areas. Coastal towns see more rain than snow. Festive lights brighten city streets.

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Weather in Tochigi, Japan: A Month-by-Month AnalysisTochigi Prefecture, located in the northern Kantō region of Japan, experiences a humid subtropical climate (Köppen classification: Cfa) characterized by distinct seasonal variations, significant rainfall throughout the year, and a temperature range that reflects Japan’s temperate climate. This report provides a detailed month-by-month breakdown of Tochigi’s weather, including average temperatures, precipitation, humidity, sunshine hours, and notable weather patterns, based on historical and climatological data. The analysis draws from reliable sources to offer insights for travelers, residents, and researchers interested in Tochigi’s climate.January: Cold and DryJanuary is one of the coldest months in Tochigi, with average high temperatures around 8°C (46°F) and lows dipping to -1.8°C (28.7°F). The mean daily temperature hovers around 2.2°C (35.9°F). Precipitation is minimal, with an average of 56 mm (2.2 inches) of rainfall and about 4–6 rainy days, making it one of the driest months. Snowfall is notable, particularly in higher-altitude areas like Nikko, with an average of 3.1 inches of snow accumulation over a 31-day period. Relative humidity is relatively low at 66–72%, and the region enjoys about 6.8–7.8 hours of sunshine daily. The weather is generally poor for outdoor activities, especially in Nikko, where temperatures can feel frigid, requiring warm clothing.

February: Slightly Warmer, Still WintryFebruary remains cold, with average highs of 8.5–9°C (47.4–48.2°F) and lows around -0.9°C (30.3°F). The mean temperature is approximately 3.2°C (37.8°F). Precipitation increases slightly to 61 mm (2.4 inches) with 5–9 rainy days, and snowfall peaks with an average of 3.3 inches, particularly in February’s early weeks. Humidity stays around 67–73%, and sunshine hours are similar to January, averaging 6.4–7.8 hours daily. Like January, February is considered a winter month with poor weather conditions in higher areas like Nikko, though lower-altitude areas like Mooka may feel slightly less harsh. Visitors should prepare for cold, occasionally snowy conditions.

March: Transition to SpringMarch marks the beginning of spring, with temperatures warming to an average high of 11.8–13°C (53.3–55.4°F) and lows around 2.2°C (36°F). The mean temperature rises to about 7°C (44.5°F). Precipitation increases to 105 mm (4.1 inches) with 7–12 rainy days, and snowfall decreases significantly to 1.5 inches, mostly early in the month. Humidity remains stable at 66–73%, and sunshine hours average 6.3–9.5 hours daily. The weather ranges from poor in Nikko to unpleasant in Mooka, but cherry blossoms begin to appear late in the month, making it a transitional period ideal for early spring activities.

April: Mild and PleasantApril brings milder weather, with average highs of 17.8–18°C (64.1–64.4°F) and lows around 7.5°C (45.4°F). The mean temperature is about 12.3°C (54.1°F). Rainfall increases to 124 mm (4.9 inches) with 9–16 rainy days, reflecting the start of the wetter season. Humidity rises to 71–73%, and sunshine hours range from 6.1–12.1 hours daily. The weather is tolerable in Utsunomiya and pleasant in Mooka, making April a popular time for cherry blossom viewing and outdoor activities. Visitors should bring light jackets and umbrellas for occasional showers.

May: Warm and ComfortableMay is one of the most pleasant months, with average highs of 22.5–23°C (72.5–73.4°F) and lows around 12.8°C (55°F). The mean temperature is approximately 17.3°C (63.2°F). Rainfall increases to 158 mm (6.2 inches) with 8–15 rainy days, and humidity rises to 70–74%. Sunshine hours peak at 6.5–12.9 hours daily, with May offering the most daily sunshine (around 8.75 hours). The weather ranges from tolerable in Nikko to pleasant in Nasushiobara, making it ideal for hiking and exploring Tochigi’s natural attractions. Light clothing and rain gear are recommended.

June: Warm and RainyJune marks the start of the rainy season (tsuyu), with average highs of 25–26°C (77–78.8°F) and lows around 17.3°C (63.2°F). The mean temperature is about 20.8°C (69.5°F). Rainfall peaks at 180 mm (7.1 inches) with 11–20 rainy days, and humidity climbs to 78–82%. Sunshine hours drop to 4.5–12.6 hours daily due to cloudier conditions. The weather ranges from poor in Nikko to pleasant in Mooka, but high humidity can make it feel muggy. Visitors should prepare for frequent rain and consider indoor activities or rain-resistant gear.

July: Hot and WetJuly is a summer month with average highs of 28.3–30°C (83–86°F) and lows around 21.4°C (70.6°F). The mean temperature is about 24.6°C (76.2°F). It is the wettest month, with 204 mm (8 inches) of rainfall and 13–23 rainy days, driven by the rainy season’s end and typhoon activity. Humidity peaks at 83–85%, and sunshine hours are low at 4.6–12.5 hours daily. The weather is tolerable in Mooka but poor in Nikko due to heat and humidity. Light, breathable clothing and umbrellas are essential.

August: Hottest MonthAugust is the warmest month, with average highs of 30.4–31°C (86.8–88°F) and lows around 22.6°C (72.7°F). The mean temperature is approximately 25.7°C (78.2°F). Rainfall remains high at 173 mm (6.8 inches) with 11–21 rainy days, and humidity is 81–83%. Sunshine hours increase slightly to 5.9–12.3 hours daily. The weather is tolerable in Mooka but challenging in Nikko due to heat and humidity. Posts on X highlight temperatures reaching 36–38°C (97–100°F) in early August, emphasizing the need for hydration and light clothing.

September: Warm and RainySeptember remains warm, with average highs of 25.8–27°C (78.4–80.6°F) and lows around 19.1°C (66.4°F). The mean temperature is about 22.1°C (71.9°F). It is the rainiest month, with 223 mm (8.8 inches) of rainfall and 10–21 rainy days, often due to typhoons. Humidity stays high at 80–83%, and sunshine hours are low at 4.1–10.2 hours daily. The weather ranges from poor in Nikko to tolerable in Mooka. Autumn foliage begins late in the month, attracting visitors despite frequent rain.

October: Pleasant and MildOctober offers pleasant conditions, with average highs of 20.4–21°C (68.8–69.8°F) and lows around 13°C (55.4°F). The mean temperature is about 16.4°C (61.5°F). Rainfall decreases to 200 mm (7.9 inches) with 8–16 rainy days, and humidity drops to 75–80%. Sunshine hours range from 4.9–9.6 hours daily. The weather is pleasant in Mooka and tolerable in Nikko, making it ideal for autumn foliage viewing. Light layers and rain gear are recommended.

November: Cool and CrispNovember brings cooler weather, with average highs of 15.4–16°C (59.7–60.8°F) and lows around 6.4°C (43.5°F). The mean temperature is about 10.3°C (50.6°F). Rainfall drops to 95 mm (3.7 inches) with 5–11 rainy days, and humidity is 70–77%. Sunshine hours average 5.5–7.9 hours daily. The weather is tolerable in Utsunomiya but unpleasant in Nikko. Autumn foliage peaks, making it a scenic time to visit.

December: Cold and DryDecember sees a return to winter conditions, with average highs of 10.5–12°C (50.9–53.6°F) and lows around 0.6°C (33.1°F). The mean temperature is about 4.6°C (40.3°F). Rainfall is minimal at 55 mm (2.2 inches) with 4–8 rainy days, and snowfall begins, averaging 0.8 inches. Humidity is 66–72%, and sunshine hours are 6.4–7.9 hours daily. The weather is poor in Nikko and unpleasant in Utsunomiya, requiring warm clothing.

Summary and RecommendationsTochigi’s climate features cold, snowy winters (December–February), a mild spring (March–May), a hot and rainy summer (June–August), and a pleasant, colorful autumn (September–November). The best times to visit are May and October for mild temperatures and scenic beauty, though September and October bring heavy rainfall. Travelers should prepare for high humidity in summer and cold, snowy conditions in winter, especially in higher-altitude areas like Nikko. Always check local forecasts, as typhoons and extreme heat can occur in summer.

This report provides a comprehensive overview of Tochigi’s weather, enabling informed planning for any season. For real-time updates, resources like japanweather.org or meteoprog.com offer detailed forecasts.

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