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Ehime Weather by Month
Ehime Prefecture, located on Japan’s Shikoku Island, has a humid subtropical climate with distinct seasonal variations, offering warm summers, mild winters, and significant rainfall, particularly during the rainy season. Below is a detailed 1,000-word breakdown of Ehime’s weather by month, including minimum and maximum temperatures, weather conditions, appropriate clothing, recommended locations to visit, areas to avoid, record temperatures, rainfall, snow, wind, and the best and worst times to visit. All data is aggregated from reliable climate sources, with specific details for Matsuyama, Uwajima, and Shikokuchuo where applicable.
January
Weather: January is Ehime’s coldest month, with average maximum temperatures around 9-11°C (48-52°F) and minimums near 2-3°C (36-37°F). Days are chilly, often sunny, with low humidity. Snow is rare in coastal areas like Matsuyama but may occur lightly in higher elevations. Rainfall averages 60-87 mm, the driest month, spread over 16-17 rainy days.
Clothing: Pack a heavy winter coat, scarf, gloves, hat, and warm layers like sweaters and long pants. Waterproof boots are useful for occasional rain or rare snow.
Best Locations to Visit: Matsuyama Castle offers stunning winter views, and Dogo Onsen, one of Japan’s oldest hot springs, is perfect for warming up. Indoor attractions like the Ehime Museum of History and Culture are ideal.
Locations to Avoid: Avoid high-altitude areas like Mount Ishizuchi, where icy conditions can make hiking dangerous without proper gear.
Records: Record low temperatures can dip to -5°C (23°F), while record highs rarely exceed 15°C (59°F). Record snowfall is minimal, typically under 10 cm in coastal areas, with higher amounts in mountains. Record rainfall is about 100 mm for the month.
February
Weather: February remains cold, with maximum temperatures of 10-12°C (50-54°F) and minimums around 2-4°C (36-39°F). Sunny days dominate, but chilly winds can make it feel colder. Light snow is possible in mountainous areas, with rainfall around 70-90 mm.
Clothing: Similar to January, bring a warm coat, scarf, gloves, and layered clothing. A windproof jacket helps against breezes.
Best Locations to Visit: The Uwajima Castle and its surrounding gardens are serene in winter. The Botchan Karakuri Clock in Dogo is a charming indoor-outdoor attraction.
Locations to Avoid: Remote mountain trails, like those in the Ishizuchi range, can be slippery and risky due to occasional snow or ice.
Records: Record lows can reach -4°C (25°F), with highs up to 16°C (61°F). Snowfall remains light, with mountain areas seeing up to 15 cm in extreme cases.
Clothing: Similar to January, bring a warm coat, scarf, gloves, and layered clothing. A windproof jacket helps against breezes.
Best Locations to Visit: The Uwajima Castle and its surrounding gardens are serene in winter. The Botchan Karakuri Clock in Dogo is a charming indoor-outdoor attraction.
Locations to Avoid: Remote mountain trails, like those in the Ishizuchi range, can be slippery and risky due to occasional snow or ice.
Records: Record lows can reach -4°C (25°F), with highs up to 16°C (61°F). Snowfall remains light, with mountain areas seeing up to 15 cm in extreme cases.
March
Weather: March sees a gradual warming, with maximum temperatures of 13-15°C (55-59°F) and minimums of 5-7°C (41-45°F). Days are mostly sunny with increasing cloud cover and rainfall around 130-150 mm. Cherry blossoms begin late in the month in warmer areas.
Clothing: Layer with a medium-weight jacket, sweaters, and long pants. A light raincoat or umbrella is essential for frequent showers.
Best Locations to Visit: Matsuyama’s Shiroyama Park is ideal for early cherry blossom viewing. The Shimanami Kaido cycling route offers scenic coastal views.
Locations to Avoid: Avoid overly crowded cherry blossom spots in late March, as they attract many visitors.
Records: Record highs reach 20°C (68°F), lows around 0°C (32°F). Rainfall records hit 200 mm in wet years.
Clothing: Layer with a medium-weight jacket, sweaters, and long pants. A light raincoat or umbrella is essential for frequent showers.
Best Locations to Visit: Matsuyama’s Shiroyama Park is ideal for early cherry blossom viewing. The Shimanami Kaido cycling route offers scenic coastal views.
Locations to Avoid: Avoid overly crowded cherry blossom spots in late March, as they attract many visitors.
Records: Record highs reach 20°C (68°F), lows around 0°C (32°F). Rainfall records hit 200 mm in wet years.
April
Weather: April is comfortably warm, with maximums of 18-20°C (64-68°F) and minimums of 9-11°C (48-52°F). It’s mostly sunny with occasional showers (130-150 mm). Cherry blossoms peak early in the month.
Clothing: Light jackets, long-sleeve shirts, and jeans or trousers. Carry a foldable umbrella or raincoat.
Best Locations to Visit: The Shimanami Kaido is perfect for cycling, and Uwajima’s Tenshaen Garden is vibrant with spring blooms.
Locations to Avoid: Popular cherry blossom spots like Matsuyama Castle can be packed, reducing enjoyment.
Records: Record highs reach 25°C (77°F), lows around 4°C (39°F). Rainfall records are around 180 mm.
Clothing: Light jackets, long-sleeve shirts, and jeans or trousers. Carry a foldable umbrella or raincoat.
Best Locations to Visit: The Shimanami Kaido is perfect for cycling, and Uwajima’s Tenshaen Garden is vibrant with spring blooms.
Locations to Avoid: Popular cherry blossom spots like Matsuyama Castle can be packed, reducing enjoyment.
Records: Record highs reach 25°C (77°F), lows around 4°C (39°F). Rainfall records are around 180 mm.
May
Weather: May is pleasant, with maximums of 23-25°C (73-77°F) and minimums of 14-16°C (57-61°F). Sunny days dominate, but rainfall increases to 150-200 mm, marking the start of the rainy season in southern Ehime.
Clothing: T-shirts, light cardigans, and long skirts or pants. A raincoat and waterproof shoes are recommended.
Best Locations to Visit: Imabari’s Towel Museum is a unique indoor option, while Ozu’s historic streets are charming in mild weather.
Locations to Avoid: Coastal areas may get humid, so ensure proper hydration if visiting beaches.
Records: Highs up to 28°C (82°F), lows around 10°C (50°F). Rainfall records reach 250 mm.
Clothing: T-shirts, light cardigans, and long skirts or pants. A raincoat and waterproof shoes are recommended.
Best Locations to Visit: Imabari’s Towel Museum is a unique indoor option, while Ozu’s historic streets are charming in mild weather.
Locations to Avoid: Coastal areas may get humid, so ensure proper hydration if visiting beaches.
Records: Highs up to 28°C (82°F), lows around 10°C (50°F). Rainfall records reach 250 mm.
June
Weather: June is warm and humid, with maximums of 26-28°C (79-82°F) and minimums of 18-20°C (64-68°F). It’s the wettest month, with 274-309 mm of rainfall over 18-19 rainy days due to the rainy season.
Clothing: Light, breathable clothing like cotton shirts and shorts. A sturdy umbrella and waterproof shoes are essential.
Best Locations to Visit: Indoor attractions like the Ehime Prefectural Museum of Art. The Shimanami Kaido is still enjoyable if timed between showers.
Locations to Avoid: Avoid outdoor activities in heavy rain, especially in low-lying areas prone to flooding.
Records: Highs up to 32°C (90°F), lows around 15°C (59°F). Record rainfall reaches 400 mm in extreme cases.
Clothing: Light, breathable clothing like cotton shirts and shorts. A sturdy umbrella and waterproof shoes are essential.
Best Locations to Visit: Indoor attractions like the Ehime Prefectural Museum of Art. The Shimanami Kaido is still enjoyable if timed between showers.
Locations to Avoid: Avoid outdoor activities in heavy rain, especially in low-lying areas prone to flooding.
Records: Highs up to 32°C (90°F), lows around 15°C (59°F). Record rainfall reaches 400 mm in extreme cases.
July
Weather: July is hot and humid, with maximums of 30-32°C (86-90°F) and minimums of 22-24°C (72-75°F). Rainfall peaks at 195-373 mm, with frequent showers and occasional typhoons.
Clothing: Sleeveless tops, shorts, and wide-brimmed hats. Carry an umbrella and stay hydrated.
Best Locations to Visit: Matsuyama’s summer festivals, like the Matsuyama Festival, are vibrant. Indoor museums are good for rainy days.
Locations to Avoid: Coastal areas during typhoon warnings, as storms can disrupt travel.
Records: Highs reach 35°C (95°F), lows around 20°C (68°F). Record rainfall is around 450 mm.
Clothing: Sleeveless tops, shorts, and wide-brimmed hats. Carry an umbrella and stay hydrated.
Best Locations to Visit: Matsuyama’s summer festivals, like the Matsuyama Festival, are vibrant. Indoor museums are good for rainy days.
Locations to Avoid: Coastal areas during typhoon warnings, as storms can disrupt travel.
Records: Highs reach 35°C (95°F), lows around 20°C (68°F). Record rainfall is around 450 mm.
August
Weather: August is the hottest month, with maximums of 31-32°C (88-90°F) and minimums of 24-26°C (75-79°F). It’s sunny with 223 hours of sunshine but sees 194-221 mm of rain. Typhoon risks increase.
Clothing: Light, breathable fabrics, sunglasses, and hats. Umbrellas for sudden showers.
Best Locations to Visit: Uwajima’s Bullfighting Festival is a unique cultural event. Beaches like Futami are great for swimming.
Locations to Avoid: Avoid outdoor activities during peak heat or typhoon alerts.
Records: Record highs hit 37°C (99°F), lows around 22°C (72°F). Rainfall records are 300 mm.
Clothing: Light, breathable fabrics, sunglasses, and hats. Umbrellas for sudden showers.
Best Locations to Visit: Uwajima’s Bullfighting Festival is a unique cultural event. Beaches like Futami are great for swimming.
Locations to Avoid: Avoid outdoor activities during peak heat or typhoon alerts.
Records: Record highs hit 37°C (99°F), lows around 22°C (72°F). Rainfall records are 300 mm.
September
Weather: September remains warm, with maximums of 27-29°C (81-84°F) and minimums of 20-22°C (68-72°F). Rainfall is high at 195-221 mm, with typhoon risks. Humidity peaks at 91%.
Clothing: Light clothing, raincoats, and umbrellas. Breathable fabrics for humidity.
Best Locations to Visit: The 88 Temple Pilgrimage is scenic in early autumn. Indoor sites like the Sairin-ji Temple.
Locations to Avoid: Coastal and low-lying areas during typhoon season.
Records: Highs up to 34°C (93°F), lows around 18°C (64°F). Rainfall records hit 350 mm.
Clothing: Light clothing, raincoats, and umbrellas. Breathable fabrics for humidity.
Best Locations to Visit: The 88 Temple Pilgrimage is scenic in early autumn. Indoor sites like the Sairin-ji Temple.
Locations to Avoid: Coastal and low-lying areas during typhoon season.
Records: Highs up to 34°C (93°F), lows around 18°C (64°F). Rainfall records hit 350 mm.
October
Weather: October is mild, with maximums of 22-24°C (72-75°F) and minimums of 14-16°C (57-61°F). Rainfall decreases to 100-223 mm, and days are sunny with autumn foliage starting.
Clothing: Light jackets, long-sleeve shirts, and pants. A light umbrella for occasional rain.
Best Locations to Visit: Mount Ishizuchi for hiking and autumn colors. Saijo’s Sake Festival is a cultural highlight.
Locations to Avoid: None significant, as weather is generally favorable.
Records: Highs reach 28°C (82°F), lows around 10°C (50°F). Rainfall records are 200 mm.
Clothing: Light jackets, long-sleeve shirts, and pants. A light umbrella for occasional rain.
Best Locations to Visit: Mount Ishizuchi for hiking and autumn colors. Saijo’s Sake Festival is a cultural highlight.
Locations to Avoid: None significant, as weather is generally favorable.
Records: Highs reach 28°C (82°F), lows around 10°C (50°F). Rainfall records are 200 mm.
November
Weather: November is cool, with maximums of 16-18°C (61-64°F) and minimums of 9-11°C (48-52°F). Rainfall drops to 60-80 mm, and days are crisp and sunny.
Clothing: Sweaters, medium-weight jackets, and long pants. Layer for cooler evenings.
Best Locations to Visit: Ozu Castle for autumn foliage and the Garyu Sanso villa for serene views.
Locations to Avoid: None, as weather is ideal.
Records: Highs up to 22°C (72°F), lows around 5°C (41°F). Rainfall records are 100 mm.
Clothing: Sweaters, medium-weight jackets, and long pants. Layer for cooler evenings.
Best Locations to Visit: Ozu Castle for autumn foliage and the Garyu Sanso villa for serene views.
Locations to Avoid: None, as weather is ideal.
Records: Highs up to 22°C (72°F), lows around 5°C (41°F). Rainfall records are 100 mm.
December
Weather: December is chilly, with maximums of 11-13°C (52-55°F) and minimums of 4-6°C (39-43°F). Rainfall is low at 60-80 mm, with mostly sunny days. Light snow is possible in mountains.
Clothing: Warm coat, scarf, gloves, and layered clothing. Waterproof boots for rare snow.
Best Locations to Visit: Dogo Onsen for warmth and Matsuyama’s winter illuminations.
Locations to Avoid: Mountainous areas without proper winter gear.
Records: Highs up to 18°C (64°F), lows around 0°C (32°F). Snowfall records are under 10 cm in coastal areas.
Clothing: Warm coat, scarf, gloves, and layered clothing. Waterproof boots for rare snow.
Best Locations to Visit: Dogo Onsen for warmth and Matsuyama’s winter illuminations.
Locations to Avoid: Mountainous areas without proper winter gear.
Records: Highs up to 18°C (64°F), lows around 0°C (32°F). Snowfall records are under 10 cm in coastal areas.
Record Extremes
- Temperature: Record high of 37°C (99°F) in August; record low of -5°C (23°F) in January.
- Rainfall: Record monthly rainfall of 450 mm in July.
- Snow: Maximum snowfall of 15-20 cm in mountainous areas during February.
- Wind: Typhoon-related winds can exceed 100 km/h in August-September, with record gusts up to 120 km/h.
Best and Worst Times to Visit
- Best Time: May and October offer mild temperatures (20-26°C), moderate rainfall, and pleasant conditions for outdoor activities like cycling the Shimanami Kaido or hiking Mount Ishizuchi. Autumn foliage in October and cherry blossoms in May enhance the experience.
- Worst Time: June and July are the least favorable due to heavy rainfall (up to 373 mm) and high humidity, which can disrupt outdoor plans and make travel uncomfortable. Typhoon risks in August-September also pose challenges.
Conclusion
Ehime’s climate offers diverse experiences, from sunny spring days to humid summers and crisp autumns. By planning around the rainy season and typhoon risks, and packing appropriate clothing, visitors can enjoy Ehime’s cultural and natural attractions year-round, with May and October standing out as the most comfortable months.
Paul (Poison Fish) Manjyu Woodman
