Saitama Prefecture Free Weather Report 2025

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世界逆転宣言！【セカセン！】@sekai_gyakuten

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

❄️ January
Cold and dry. Saitama City averages 1–9°C. Snow is rare but possible inland. Skies are mostly clear with crisp air and low humidity—ideal for winter walks and illuminations.

🌨️ February
Still chilly. Highs reach 10–12°C, with lows around 2–4°C. Occasional frost in rural areas. Rainfall remains low, and sunshine gradually increases.

🌱 March
Spring begins. Temperatures rise to 12–17°C. Plum blossoms bloom in parks like Omiya and Gongendo. Rainfall increases slightly, and mornings are often foggy.

🌸 April
Mild and blooming. Highs reach 17–22°C. Cherry blossoms peak across the prefecture, especially along the Shingashi River and in Hitsujiyama Park. Rain showers alternate with sunny spells.

🌼 May
Warm and pleasant. Temperatures climb to 21–26°C. Rainfall is light, and skies are mostly clear. Perfect for hiking in Chichibu and enjoying flower festivals.

☀️ June
Start of the rainy season. Highs range from 24–29°C. Humidity rises, and afternoon showers are frequent. Rivers swell, and greenery flourishes.

🔥 July
Hot and humid. Temperatures reach 28–34°C. Rainfall peaks early, then tapers off. Summer festivals begin, and evenings stay warm and muggy.

🏖️ August
Still hot. Highs remain between 29–35°C. Rain is infrequent, and sunshine dominates. Fireworks festivals and river escapes are popular.

🍂 September
Transition to autumn. Temperatures ease to 25–31°C. Rain returns gradually, and typhoon activity may affect the region. Nights begin to cool.

🌦️ October
Cooler and clearer. Highs drop to 19–26°C. Rainfall decreases, and autumn foliage begins in parks and temple grounds. Ideal for travel and photography.

🌫️ November
Chilly and dry. Highs hover around 14–21°C, with lows near 8°C. Rain is minimal, and foggy mornings are common. Fall colors peak in Chichibu and Nagatoro.

🎄 December
Winter returns. Temperatures range from 5–12°C. Snow is rare, but frost is common. Skies are mostly clear, and festive lights brighten city streets and shopping districts.

Would you like seasonal travel tips or festival highlights for Saitama? I’ve got some great ones!

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Weather Report: Saitama, Japan – Monthly Climate AnalysisSaitama, Japan, located in the Greater Tokyo Area, experiences a humid subtropical climate (Köppen classification: Cfa), characterized by hot, humid summers, mild winters, and significant precipitation year-round. This report provides a detailed breakdown of Saitama’s weather by month, covering temperature, precipitation, humidity, sunshine hours, and other climatic factors, based on historical data and averages. The information draws from reliable sources such as weather-atlas.com, weatherspark.com, and climate-data.org, offering insights for residents, travelers, and planners.

JanuaryJanuary is Saitama’s coldest month, with average high temperatures of 8.5°C (47.3°F) and lows dropping to 2°C (35.6°F). The mean daily temperature hovers around 5.7°C (42.2°F). Precipitation is minimal, with an average of 57 mm (2.2 inches) of rainfall over approximately 4-6 rainy days, making it one of the driest months. Light snowfall is possible, accumulating about 1.3 inches over 1-2 days, though it rarely persists. Humidity is at its lowest, around 59-65%, and sunshine hours average 6.7-8 hours daily, totaling about 205-255 hours for the month. January’s clear skies (74% clear or partly cloudy) and low UV index (2) make it ideal for winter outdoor activities, though cold mornings require warm clothing.

FebruaryFebruary remains cold, with average highs of 9.5°C (49.1°F) and lows of 2.6°C (36.7°F). The daily mean temperature is around 6.6°C (43.9°F). Precipitation slightly increases to 61 mm (2.4 inches) over 5-6 days, with light snow possible (1.3 inches on average, 1.8 snowfall days). Humidity rises slightly to 60-66%, and sunshine hours range from 6-7.6 hours daily. Cloud cover increases compared to January, with skies clear or partly cloudy about 65% of the time. The low UV index (2) and occasional snowfall create a crisp winter atmosphere, less ideal for tourism but suitable for indoor activities or winter hikes.

MarchMarch marks the transition to spring, with average highs of 13.3°C (55.9°F) and lows of 5.6°C (42.1°F). The mean temperature rises to 10.3°C (50.5°F). Rainfall increases significantly to 98 mm (3.9 inches) over 8-9 days, and snowfall diminishes (0.3 inches). Humidity remains steady at 62-65%, while sunshine hours increase to 7.9-9.4 hours daily. Cloud cover is more prevalent (56% clear), reflecting the shift to wetter conditions. The blooming of cherry blossoms in late March makes this a picturesque time to visit, though rain gear is advisable.

AprilApril brings milder weather, with average highs of 18°C (64.4°F) and lows of 10°C (50°F), yielding a mean temperature of 15.1°C (59.2°F). Rainfall rises to 107-129 mm (4.2-5.1 inches) over 7-9 days, signaling the start of the wetter season. Humidity increases to 64-69%, and sunshine hours range from 8.4-11.9 hours daily. Skies are partly cloudy (49% clear), and the UV index rises to 4, indicating moderate sun exposure. April’s pleasant temperatures and blooming flora make it an excellent time for outdoor activities, though occasional showers require preparation.

MayMay offers comfortable conditions, with average highs of 23.7°C (74.7°F) and lows of 15.8°C (60.4°F). The mean temperature is around 20.9°C (69.6°F). Rainfall totals 132-133 mm (5.2 inches) over 8-9 days, with humidity at 65-72%. Sunshine hours peak at 9-12.8 hours daily, totaling about 279 hours for the month. Cloud cover increases (43% clear), but the pleasant temperatures and moderate UV index (5) make May one of the best months for tourism, ideal for exploring Saitama’s parks and cultural sites.

JuneJune ushers in early summer and the rainy season (tsuyu), with average highs of 26°C (78.8°F) and lows of 19.3°C (66.7°F). The mean temperature is 23.7°C (74.6°F). Rainfall peaks at 154-181 mm (6-7.1 inches) over 11-13 days, the highest number of rainy days annually. Humidity climbs to 73-79%, and cloud cover is significant (32% clear). Sunshine hours drop to 7.9-12.7 hours daily due to frequent showers. The UV index reaches 6, suggesting sun protection. June’s warm, wet conditions are less ideal for outdoor plans but vibrant for festivals.

JulyJuly is hot and humid, with average highs of 30.3°C (86.5°F) and lows of 23.5°C (74.3°F). The mean temperature is 27.9°C (82.2°F). Rainfall remains high at 153-176 mm (6-6.9 inches) over 10-13 days, with humidity peaking at 73-81%. Sunshine hours range from 8.2-12.8 hours, but cloud cover persists (34% clear). The UV index hits 7, the highest of the year, necessitating sunscreen. July’s heat and humidity make outdoor activities challenging, but summer festivals, like those noted in travel.com, thrive.

AugustAugust is the hottest month, with average highs of 31.9°C (89.4°F) and lows of 25.2°C (77.4°F), with a mean of 29.5°C (85.1°F). Rainfall slightly decreases to 128-136 mm (5-5.4 inches) over 8-12 days, but humidity remains high at 69-78%. Sunshine hours are 8.2-12.6 hours daily, with 47% clear skies. The UV index stays at 7. August’s sweltering conditions, occasionally exceeding 35°C (95°F), make indoor activities or shaded outings preferable, though summer festivals continue. Recent posts note extreme heat, with temperatures reaching 41.8°C (107.2°F) in nearby Gunma Prefecture in 2025.

SeptemberSeptember sees a gradual cooling, with average highs of 27.5°C (81.5°F) and lows of 21.6°C (70.9°F). The mean temperature is 25.3°C (77.5°F). Rainfall peaks at 188-210 mm (7.2-8.3 inches) over 10-12 days, often due to typhoons. Humidity is high at 70-79%, and sunshine hours drop to 7.3-10.3 hours (47% clear). The UV index lowers to 5. September’s warm, wet conditions signal the transition to autumn, with cooler evenings offering relief.

OctoberOctober brings comfortable autumn weather, with average highs of 21.6°C (70.9°F) and lows of 15.8°C (60.4°F). The mean temperature is 19.3°C (66.7°F). Rainfall remains high at 189-217 mm (7.4-8.5 inches) over 9-10 days, the wettest month. Humidity is 69-77%, and sunshine hours are 6.8-9.2 hours (58% clear). The UV index is 4. October’s mild temperatures and vibrant foliage make it a prime time for tourism, though rain gear is essential.

NovemberNovember cools further, with average highs of 16.2°C (61.2°F) and lows of 10°C (50°F). The mean temperature is 14°C (57.2°F). Rainfall drops to 88-101 mm (3.5-4 inches) over 6-7 days, and humidity decreases to 64-75%. Sunshine hours are 6.8-7.6 hours (66% clear), and the UV index is 3. November’s crisp weather and colorful leaves make it ideal for outdoor exploration.

DecemberDecember heralds winter, with average highs of 10.9°C (51.6°F) and lows of 4.8°C (40.6°F). The mean temperature is 8.5°C (47.3°F). Rainfall is minimal at 53-64 mm (2.1-2.5 inches) over 4-5 days, the driest month. Humidity drops to 56-69%, and sunshine hours are 7.3-9.8 hours (74% clear). Light snowfall is rare (0.3 inches). December’s clear, cold days are perfect for winter activities.

Seasonal Overview and RecommendationsSaitama’s climate features distinct seasons. Spring (March-May) offers mild temperatures (13.3-23.7°C) and moderate rainfall, ideal for cherry blossom viewing. Summer (June-August) is hot (26-31.9°C), humid, and rainy, best for indoor activities or festivals. Autumn (September-November) provides comfortable temperatures (16.2-27.5°C) and vibrant foliage, though typhoons increase rainfall. Winter (December-February) is cold (8.5-9.5°C) and dry, with occasional light snow, suitable for indoor cultural experiences. The best times to visit are May and October for pleasant weather and lower humidity.

ConclusionSaitama’s weather varies significantly by month, with temperatures ranging from 2°C in January to 31.9°C in August, and precipitation peaking in October (189-217 mm). Humidity fluctuates from 59% in January to 81% in July, while sunshine hours are highest in May (279 hours) and lowest in June (163 hours). Travelers should plan according to seasonal patterns, packing for rain in summer and autumn, and warm clothing for winter. This comprehensive monthly analysis aids in preparing for Saitama’s diverse climate.

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