Gunma Weather Today

The Climate and Weather in Gunma-ken, Japan

Gunma-ken, located in the Kanto region of Japan, experiences a diverse climate and a variety of weather conditions throughout the year. Situated inland, the prefecture is known for its beautiful landscapes, hot springs, and mountainous terrain. Let's explore the climate and weather patterns in Gunma-ken, and what you can expect when visiting this captivating region.

Seasonal Overview:

Gunma-ken has four distinct seasons: spring, summer, autumn, and winter. Each season brings its own unique weather characteristics, offering visitors a chance to experience a wide range of outdoor activities and natural beauty.

Spring (March to May):

During spring, Gunma-ken begins to emerge from the cold winter months. The temperatures gradually rise, and the landscapes come to life with cherry blossoms and other blooming flowers. The average temperature ranges from 10°C (50°F) to 20°C (68°F), making it a pleasant time to explore the prefecture's scenic parks and gardens.

Summer (June to August):

Summers in Gunma-ken are hot and humid, with average temperatures ranging from 20°C (68°F) to 30°C (86°F). July and August are the wettest months, with occasional heavy rainfall and thunderstorms. Despite the humidity, summer is a popular time for outdoor activities such as hiking, river rafting, and visiting the numerous hot springs in the region.

Autumn (September to November):

Autumn in Gunma-ken is a breathtaking season that offers vibrant foliage and comfortable temperatures. The average temperature ranges from 10°C (50°F) to 20°C (68°F), making it an ideal time for hiking through the prefecture's mountainous areas and enjoying the stunning autumn colors. Many tourists visit Gunma-ken during this season to experience the beauty of places like Mount Akagi and Mount Haruna.

Winter (December to February):

Winter in Gunma-ken brings cold temperatures and heavy snowfall, making it a popular destination for winter sports enthusiasts. The average temperature during this season ranges from -5°C (23°F) to 5°C (41°F). The mountainous regions, such as Mount Tanigawa and Mount Asama, become covered in snow, providing excellent conditions for skiing, snowboarding, and other winter activities.

Annual Weather Patterns:

Gunma-ken's climate is influenced by its inland location and the surrounding mountain ranges. The region experiences a significant temperature variation between day and night throughout the year. Summers are generally hot and humid, while winters are cold and snowy. The average annual precipitation in Gunma-ken is around 1,200 mm (47 inches), with the majority of rainfall occurring during the summer months. The precipitation is evenly distributed throughout the year, but July and August receive the highest amount of rainfall. The following table provides an overview of the average monthly temperatures and rainfall in Gunma-ken:

Month	Average Temperature (°C)	Rainfall (mm)
January	-3 to 4	30
February	-2 to 5	30
March	1 to 10	60
April	6 to 16	100
May	11 to 20	100
June	16 to 24	120
July	20 to 29	200
August	21 to 31	200
September	16 to 26	160
October	10 to 18	120
November	4 to 12	60
December	-1 to 5	40

Extreme Weather Events:

Gunma-ken, being located in an earthquake-prone region of Japan, is occasionally affected by seismic activity. It is important to stay informed about earthquake safety and follow any instructions provided by local authorities. In addition to earthquakes, Gunma-ken can also experience typhoons during the summer and early autumn months. These tropical cyclones bring strong winds, heavy rainfall, and occasionally cause flooding. It is recommended to monitor weather forecasts and take necessary precautions during typhoon season.

Conclusion:

Gunma-ken, Japan, offers a diverse climate and a range of weather conditions throughout the year. From the beautiful cherry blossoms of spring to the snowy mountains of winter, the prefecture provides a variety of outdoor activities and stunning natural landscapes. Whether you enjoy hiking, skiing, or simply exploring picturesque towns, Gunma-ken has something to offer in every season. References: - Japan Meteorological Agency (JMA) - Gunma Prefecture Tourism Website