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Kagoshima Weather by Month
Kagoshima, located on Japan’s Kyushu Island, has a humid subtropical climate (Cfa per Köppen-Geiger), characterized by hot, humid summers, mild winters, and significant rainfall year-round, with a pronounced rainy season in June. Below is a detailed breakdown of Kagoshima’s weather by month, including minimum and maximum temperatures, weather conditions, clothing recommendations, best locations to visit, areas to avoid, record temperatures, rainfall, snow, wind, and the best and worst times to visit. All data is based on historical averages from 1991–2021, with records noted where available.
January: Cold and Relatively Dry
- Average Temperatures: Min 4.6°C (40.3°F), Max 12.8°C (55°F)
- Weather Conditions: January is Kagoshima’s coldest month, with chilly days and occasional light snow (2.3 days, 30mm/1.18″ snowfall). It’s relatively dry, with 73mm (2.87″) of rain over 8–9 days, and sunny spells (5.7 hours daily sunshine). Humidity is low at 65%.
- Clothing: Layered clothing, including a warm coat, scarf, gloves, and waterproof boots for potential snow or rain. A hat is useful for chilly evenings.
- Best Locations to Visit: Sengan-en Garden for winter scenery and historical charm; Shiroyama Park for panoramic views. Indoor attractions like the Museum of the Meiji Restoration are ideal.
- Locations to Avoid: Coastal areas like Sakurajima can be windy and cold, making ferry trips less pleasant.
- Records: Lowest temperature 2°C (35.6°F, 2016); highest 20°C (68°F). Record snowfall 30mm (1.18″). Record rainfall 150mm (5.9″) in a single event. Record wind 12.9 knots (14.8 mph, moderate breeze).
- Notes: Low tourist crowds make January budget-friendly, but outdoor activities are limited by cold.
February: Cold with Occasional Snow
- Average Temperatures: Min 5.2°C (41.4°F), Max 13.5°C (56.3°F)
- Weather Conditions: Slightly warmer than January, with 80mm (3.15″) of rain over 9 days and rare snow (1–2 days, 10mm/0.39″). Sunny periods increase (6 hours daily). Humidity remains low at 65%.
- Clothing: Warm layers, a waterproof jacket, and sturdy shoes. A scarf and gloves are still needed for evenings.
- Best Locations to Visit: Sakurajima Volcano for dramatic winter views (if winds are calm); Kagoshima Aquarium for indoor exploration.
- Locations to Avoid: High-altitude areas like Kirishima may have icy trails, posing risks for hikers.
- Records: Lowest temperature 2°C (35.6°F); highest 22°C (71.6°F). Record snowfall 10mm (0.39″). Record rainfall 200mm (7.87″). Record wind 12.9 knots.
- Notes: February is mild but still chilly. It’s a good time for cultural sites with fewer crowds.
March: Transition to Spring
- Average Temperatures: Min 7.8°C (46°F), Max 16.5°C (61.7°F)
- Weather Conditions: Spring begins, with warmer days and 157mm (6.18″) of rain over 14 days. Snow is absent. Sunshine averages 6 hours daily, with a mix of cloudy and clear skies. Winds peak at 6.9 knots (7.9 mph).
- Clothing: Light layers (sweater, long-sleeve shirt), a rain jacket, and umbrella. Comfortable shoes for walking.
- Best Locations to Visit: Chiran Samurai District for early cherry blossoms; Amami Oshima for nature trails.
- Locations to Avoid: Coastal areas may be windy, so check ferry conditions for island trips.
- Records: Highest rainfall 250mm (9.84″). Max temp 25°C (77°F); min 8°C (46.4°F). Record wind 15 knots (17.3 mph).
- Notes: March is ideal for spring festivals and mild outdoor exploration.
April: Pleasant Spring
- Average Temperatures: Min 12.1°C (53.8°F), Max 21°C (69.8°F)
- Weather Conditions: Warm and comfortable, with 205mm (8.07″) of rain over 12 days. Sunshine increases to 6.5 hours daily, supporting blooming flora. Humidity rises to 70%.
- Clothing: Light jacket, long-sleeve shirts, and rain gear. Breathable fabrics for warmer days.
- Best Locations to Visit: Kirishima-Yaku National Park for hiking; Sengan-en for cherry blossoms.
- Locations to Avoid: Low-lying areas prone to flooding during heavy rain.
- Records: Max temp 28°C (82.4°F); min 10°C (50°F). Record rainfall 300mm (11.81″).
- Notes: April is a prime time for nature lovers, with vibrant greenery.
May: Warm and Rainy
- Average Temperatures: Min 16.4°C (61.5°F), Max 24.5°C (76.1°F)
- Weather Conditions: Summer approaches, with 230mm (9.06″) of rain over 12 days. Sunny days (8.76 hours) dominate, but humidity climbs to 72%. No snow.
- Clothing: Short-sleeve shirts, light pants, and a raincoat. Sunglasses and sunscreen for sunny days.
- Best Locations to Visit: Ibusuki for hot sand baths; Yakushima for forest hikes.
- Locations to Avoid: Avoid remote trails during heavy rain due to mudslide risks.
- Records: Max temp 30°C (86°F); min 12°C (53.6°F). Record rainfall 350mm (13.78″).
- Notes: May is busy with tourists, but the weather is great for outdoor activities.
June: Rainy Season Peak
- Average Temperatures: Min 20.1°C (68.2°F), Max 27.2°C (81°F)
- Weather Conditions: Wettest month, with 452–523mm (17.8–20.6″) of rain over 18 days. Humidity peaks at 78%, with only 3.6 hours of sunshine daily. Cloudy and muggy.
- Clothing: Waterproof clothing, umbrellas, and quick-dry fabrics. Light, breathable layers.
- Best Locations to Visit: Indoor sites like Kagoshima City Museum of Art; Reimeikan Museum.
- Locations to Avoid: Sakurajima and coastal areas due to heavy rain and potential ferry disruptions.
- Records: Record rainfall 670mm (26.38″). Max temp 32°C (89.6°F); min 15°C (59°F).
- Notes: June is the least favorable month due to intense rain and low visibility.
July: Hot and Humid
- Average Temperatures: Min 24°C (75.2°F), Max 31°C (87.8°F)
- Weather Conditions: Hot and sticky, with 325mm (12.8″) of rain over 15 days. Sunshine increases to 6 hours daily. Typhoon season begins, with occasional storms.
- Clothing: Lightweight, breathable clothing, hats, and sunscreen. Rain gear for sudden showers.
- Best Locations to Visit: Beaches like Iso Beach; indoor attractions during rain.
- Locations to Avoid: Low-lying areas during typhoons or heavy rain.
- Records: Record rainfall 3257.76mm (128.3″) in a single event. Max temp 35°C (95°F); min 20°C (68°F).
- Notes: July is hot but manageable with indoor options during rain.
August: Hottest Month
- Average Temperatures: Min 25.6°C (78.1°F), Max 32.5°C (90.5°F)
- Weather Conditions: Peak summer heat, with 250mm (9.84″) of rain over 12 days. Sunniest month (7 hours daily). Sea temperatures reach 28.3°C (82.9°F), ideal for swimming.
- Clothing: Shorts, t-shirts, sandals, and sun protection (hats, SPF 30+). Light raincoat.
- Best Locations to Visit: Amami Oshima for beaches; Sakurajima for volcanic tours.
- Locations to Avoid: Avoid crowded tourist spots during peak season.
- Records: Highest temp 37°C (98.6°F, 2016); min 22°C (71.6°F). Record rainfall 400mm (15.75″).
- Notes: August is vibrant but expensive due to high tourist demand.
September: Warm with Typhoon Risk
- Average Temperatures: Min 22.8°C (73°F), Max 30.1°C (86.2°F)
- Weather Conditions: Warm and humid, with 211mm (8.31″) of rain over 10 days. Sunshine drops to 5.5 hours. Typhoon season peaks, bringing strong winds.
- Clothing: Light clothing, waterproof shoes, and a raincoat. Sun protection remains essential.
- Best Locations to Visit: Kirishima for autumn foliage; indoor museums during storms.
- Locations to Avoid: Coastal areas during typhoons.
- Records: Max temp 34°C (93.2°F); min 18°C (64.4°F). Record rainfall 500mm (19.69″).
- Notes: September is less crowded but risky due to typhoons.
October: Comfortable Autumn
- Average Temperatures: Min 17.5°C (63.5°F), Max 25.6°C (78.1°F)
- Weather Conditions: Pleasant, with 100mm (3.94″) of rain over 7 days (driest month for rain days). Sunshine averages 6 hours, with mild temperatures and 70% humidity.
- Clothing: Light layers, a sweater for evenings, and a light jacket.
- Best Locations to Visit: Shiroyama Park for autumn views; Yakushima for hiking.
- Locations to Avoid: None significant; October is generally safe.
- Records: Max temp 30°C (86°F); min 12°C (53.6°F). Record rainfall 200mm (7.87″).
- Notes: October is one of the best months to visit, with mild weather and low rainfall.
November: Cool and Dry
- Average Temperatures: Min 11.9°C (53.4°F), Max 20.3°C (68.5°F)
- Weather Conditions: Cool and comfortable, with 92mm (3.62″) of rain over 6 days. Sunshine averages 5.5 hours. No snow, low humidity (68%).
- Clothing: Sweaters, long pants, and a light jacket. A scarf for cooler evenings.
- Best Locations to Visit: Chiran for historical sites; Sengan-en for autumn foliage.
- Locations to Avoid: None; November is ideal for most activities.
- Records: Max temp 25°C (77°F); min 8°C (46.4°F). Record rainfall 150mm (5.9″).
- Notes: November offers excellent weather and fewer tourists.
December: Mild Winter
- Average Temperatures: Min 6.7°C (44.1°F), Max 15.3°C (59.5°F)
- Weather Conditions: Driest month, with 88mm (3.46″) of rain over 9 days and occasional light snow (10mm/0.39″). Sunshine averages 5.6 hours, with a UV index of 3 (lowest).
- Clothing: Warm layers, a coat, and waterproof shoes. A hat for chilly days.
- Best Locations to Visit: Kagoshima Aquarium; Shiroyama Park for winter views.
- Locations to Avoid: Sakurajima during windy conditions.
- Records: Max temp 20°C (68°F); min 5°C (41°F). Record rainfall 100mm (3.94″). Record snowfall 10mm (0.39″).
- Notes: December is quiet and budget-friendly, with mild weather.
Summary of Extremes and Recommendations
- Record Temperatures: Highest 37°C (98.6°F, August 2016); lowest 2°C (35.6°F, January 2016).
- Record Rainfall: 3257.76mm (128.3″) in July (single event); monthly max 670mm (26.38″, June).
- Record Snowfall: 30mm (1.18″, January). Annual snow totals 50mm (1.97″) over 5.4 days.
- Record Wind: 15 knots (17.3 mph, March).
- Best Time to Visit: October and November offer mild temperatures (20–25°C), low rainfall (92–100mm), and comfortable humidity (68–70%). Autumn foliage and fewer tourists enhance the experience.
- Worst Time to Visit: June is the least favorable due to heavy rainfall (452–523mm), high humidity (78%), and limited sunshine (3.6 hours). July and September are also challenging due to typhoon risks and heat.
General Tips
Kagoshima’s climate requires preparation for rain year-round, especially from April to September. Always carry a compact umbrella or raincoat. For summer, prioritize sun protection (SPF 30+, hats) due to high UV indices (up to 12.4 in July). Winter visitors should pack warm layers, as temperatures can dip to 4°C at night. The city’s volcanic landscape, including Sakurajima, is a highlight, but check weather conditions before visiting, especially during windy or rainy periods. Kagoshima’s mix of cultural sites, natural beauty, and coastal attractions makes it a year-round destination, with October–November offering the optimal balance of weather and accessibility.
Paul (Poison Fish) Manjyu Woodman
