Numazu Climate & Monthly Temperature Overview – Japan

Winter (December – February)

Numazu experiences mild winters with average temperatures hovering between 5°C (41°F) and 10°C (50°F). The city receives minimal snowfall, making it a relatively snow-free destination during this time of year. However, the weather can be unpredictable, with occasional cold snaps and strong winds bringing the temperature down to freezing point. Nonetheless, the mild conditions and generally sunny skies make it a pleasant season to visit.

Spring (March – May)

As spring arrives in Numazu, the temperature gradually rises, with average highs reaching 15°C (59°F) in April and 20°C (68°F) in May. The city awakens from its winter slumber, with blooming flowers adding vibrant colors to the landscape. Rainfall increases slightly during this season, but it does not deter outdoor activities such as cherry blossom viewing and nature walks. The pleasant weather and blooming flora make spring an ideal time to explore Numazu’s natural beauty.

Summer in Numazu

Numazu, Japan, experiences hot and humid summers with average temperatures ranging from 25°C to 30°C (77°F to 86°F). The average high temperature in August, the warmest month, is around 32°C (90°F), while the average low temperature is 24°C (75°F). The high humidity levels during this season can make the heat feel even more intense, especially during the day. It is important to stay hydrated and avoid prolonged exposure to the sun during the peak heat hours. Rainfall is common during the summer months in Numazu, with frequent thunderstorms and occasional typhoons passing through the region.

Winter in Numazu

Numazu’s winters are mild and relatively dry, with average temperatures ranging from 5°C to 10°C (41°F to 50°F). The coldest month is January, with an average high temperature of 9°C (48°F) and an average low temperature of 2°C (36°F). Snowfall is rare in Numazu, but it can occasionally occur during particularly cold spells. The city experiences frequent clear and sunny days during the winter months, making it a popular destination for outdoor activities such as hiking and cycling. The wind chill factor can make temperatures feel colder than they actually are, so it is important to dress warmly when venturing outside during the winter.

Location and Formation

Numazu, a city on the east coast of Japan’s Izu Peninsula, is often shrouded in clouds due to its proximity to the ocean and the influence of the warm Kuroshio Current. The warm waters of the current contribute to the formation of clouds as they cool the moist air above. Additionally, the surrounding mountains create a barrier that forces the air to rise, further promoting cloud formation.

Types of Clouds

Numazu experiences a variety of cloud types, including cumulus, stratus, and cirrus clouds. Cumulus clouds are puffy and have a cotton-like appearance, while stratus clouds are flat and gray, often covering the entire sky. Cirrus clouds, on the other hand, are thin and wispy, composed of ice crystals and often appearing at high altitudes. The prevalence of these different cloud types depends on factors such as temperature, humidity, and atmospheric pressure.

Rainfall Distribution

Numazu lies on the eastern coast of Japan, facing the Suruga Bay. The city experiences moderate to heavy rainfall throughout the year, with a significant portion of this precipitation occurring during the summer months. The average annual precipitation in Numazu is around 2,300 mm, with the wettest month being July, averaging over 400 mm of rainfall. During this period, the city is prone to heavy downpours and occasional thunderstorms.

Seasonality of Precipitation

The rainfall pattern in Numazu follows a distinct seasonal trend. Summer months, from June to August, bring the most abundant precipitation due to the influence of the warm Kuroshio Current, which transports moisture-laden air from the tropics. Autumn sees a slight decrease in rainfall, while winter brings the driest conditions, with average monthly precipitation dropping to around 100 mm. Spring, from March to May, also experiences a gradual increase in rainfall as the temperature rises and the atmosphere becomes more humid.

Annual Precipitation

Numazu, Japan experiences a humid subtropical climate, characterized by abundant rainfall throughout the year. Annual precipitation typically exceeds 2,000 millimeters (78.7 inches), with the highest rainfall occurring during the months of June and September when the city is affected by the monsoon season. The city also receives frequent rainfall during the winter months, typically in the form of light drizzle or rain, due to the influence of moist air from the Pacific Ocean. Numazu is situated on the east coast of the Izu Peninsula, which is exposed to warm currents from the Kuroshio Current, further enhancing the city’s humidity and rainfall.

Seasonal Variations

Rainfall in Numazu exhibits distinct seasonal variations. During the spring (March-May), rainfall is generally moderate, averaging around 150 millimeters (5.9 inches) per month. However, during the summer (June-August), rainfall increases significantly, reaching its peak in July and August when it averages around 300 millimeters (11.8 inches) per month. This heavy rainfall is primarily associated with the monsoon season, which brings strong winds and torrential rain to the region. During the autumn (September-November), rainfall gradually decreases, but still remains relatively high, averaging around 200 millimeters (7.9 inches) per month. The winter months (December-February) tend to have the least precipitation, with monthly rainfall averaging around 100 millimeters (3.9 inches). Nevertheless, even during the drier months, Numazu experiences occasional periods of rainfall or drizzle.

Historical Averages and Notable Events

Numazu, a Japanese city located on the Pacific coast of central Honshu, experiences limited snowfall throughout the year. The mean annual snowfall is around 1.2 inches (3 cm), with occasional exceptions in particularly cold winters. The snowfall typically occurs during the months of January and February, and most of it melts away quickly due to the moderate temperatures that usually range from 30 to 50 degrees Fahrenheit (-1 to 10 degrees Celsius).

On average, Numazu sees more than 0.4 inches (1 cm) of snow accumulation on the ground just once every two years. However, the city has witnessed several notable snowfall events in its history. In January 1955, a rare snowstorm brought approximately 16 inches (40 cm) of snow to Numazu, causing significant disruptions to daily life. Additionally, in February 2014, the city experienced a record-breaking snowfall of 5 inches (12.7 cm), which paralyzed traffic and led to school closures.

Weather Conditions in Numazu, Japan

Numazu, Japan, is known for its pleasant climate, with warm temperatures year-round. During the summer months (June to August), the average high temperature hovers around 29°C (84°F), while the average low temperature is approximately 22°C (72°F). Visitors can expect sunshine and clear skies for the majority of the summer season, with occasional periods of rain. The humidity levels in Numazu are relatively high during the summer, ranging from 60% to 80%, which can make the heat feel more oppressive. However, the proximity to the ocean provides a refreshing breeze, making the summer heat more bearable.

Sun exposure

The summer months in Numazu offer ample opportunities for sun exposure, as the city receives an average of 6 to 8 hours of sunshine per day. With its pristine beaches and scenic lakes, Numazu provides plenty of options for outdoor activities that allow visitors to soak up the summer sun. Visitors should be aware of the potential for sunburn and should take appropriate precautions, including wearing sunscreen, sunglasses, and protective clothing. Additionally, staying hydrated is crucial, as excessive sun exposure can lead to dehydration. In the event of extreme heat or prolonged exposure to the sun, it is advisable to seek shelter or shade to avoid heatstroke.

Moonlight over Numazu Bay

Numazu, a picturesque coastal city nestled by Suruga Bay, offers an unforgettable spectacle as the moon ascends over the tranquil waters. As night descends, the bay transforms into a canvas painted with shimmering silver hues. The gentle lapping of waves upon the shore creates a serene ambiance, while the twinkling reflections of the stars dance upon the surface of the water. The moonlight casts an ethereal glow upon the moored boats and fishing nets, casting long shadows across the sandy expanse.

Beneath the lunar canopy, the city of Numazu fades into a soft slumber. The bustling streets give way to a peaceful stillness, as the moon’s radiance envelops buildings and homes. The faint glow of distant streetlights illuminates the pathways, guiding solitary figures who wander in the ethereal night. The air is filled with the gentle scent of blooming flowers, carried by the cool evening breeze. The moon reigns supreme, casting its spell over the sleeping city and the tranquil waters of Numazu Bay.

Seasonal Humidity Variations

Numazu, located on the eastern coast of central Japan, experiences significant seasonal variations in humidity. During the warm and humid summer months (June to August), the average humidity levels hover around 80-90%, creating a sticky and uncomfortable atmosphere. The high humidity is attributed to the warm, moisture-laden air carried by the prevailing southwesterly winds from the Pacific Ocean.

In contrast, winter (December to February) brings relatively low humidity levels, averaging around 40-50%. The cold, dry air masses from the Siberian High pressure system dominate during this time, suppressing precipitation and reducing moisture in the atmosphere. This creates a crisp and dry winter climate, with occasional periods of low visibility due to fog formation.

Humidity and Health

High humidity levels can impact human health, particularly during the summer months. Excessive heat and humidity can lead to heat exhaustion, heat cramps, and heat stroke, especially for vulnerable populations like the elderly and young children. To minimize these risks, it is crucial to stay hydrated, avoid strenuous activities during peak heat hours, and use air conditioning or fans for indoor cooling.

Conversely, low humidity levels can also pose health concerns, especially during the winter. Dry air can irritate the eyes, nasal passages, and skin. It can also exacerbate respiratory issues like asthma and bronchitis. Maintaining indoor humidity levels within a comfortable range (40-60%) using humidifiers or other methods can help alleviate these symptoms and improve overall well-being.

Wind Characteristics and Patterns

Numazu, a coastal city in Japan, experiences a maritime climate that influences its wind patterns. The prevailing winds in Numazu typically blow from the southwest, bringing warm and humid air from the Pacific Ocean. During the summer months, the southwest winds can be particularly strong and can bring significant rainfall. In contrast, during the winter months, the winds tend to be weaker and more variable, with occasional cold and dry winds from the northwest.

Seasonal Variations

The strength and direction of the wind in Numazu vary significantly throughout the year. During the spring and fall, the winds are generally weaker and more consistent, while in the summer and winter, the winds can be more variable and extreme. The strongest winds are typically experienced during the months of July and August, when tropical storms and typhoons can bring gusts of up to 100 kilometers per hour (62 miles per hour). In the winter, the winds can be particularly harsh and biting, especially during snowstorms and cold fronts.

Best Time to Visit Numazu, Japan

The best time to visit Numazu, a coastal city in central Japan, depends on one’s preferences and the activities they plan to engage in. During the spring (April-May), the weather is mild with pleasant temperatures, making it ideal for outdoor activities such as hiking, cycling, and exploring the scenic Mount Fuji, which offers stunning views from the city. Additionally, the cherry blossoms are in full bloom during this time, creating picturesque landscapes and attracting numerous visitors to the area.

For those seeking warm weather and beach activities, summer (June-August) is an excellent time to visit Numazu. The city’s beaches, such as Katahama Beach and Orito Beach, offer opportunities for swimming, sunbathing, and water sports. However, it is essential to be aware of the high temperatures and humidity during this season.

Solar Potential in Numazu

Numazu, a coastal city on the Izu Peninsula in Japan, possesses significant solar energy potential due to its favorable climatic conditions. Located in the southern region of the country, Numazu receives an average of over 2,000 sunshine hours annually, making it an ideal location for photovoltaic (PV) solar installations. The city’s proximity to the ocean also contributes to its solar potential, as the reflection of sunlight off the water surface enhances solar irradiance levels.

Government Initiatives and Solar Adoption

The Japanese government has implemented several policies and incentives to promote the adoption of solar energy, including feed-in tariffs and tax credits. Numazu has actively embraced these initiatives, resulting in a notable increase in solar installations in recent years. The city government has designated several areas as solar promotion zones, offering additional incentives to developers and homeowners installing solar systems. As a result, Numazu has emerged as a leader in solar energy utilization in Japan, with an installed capacity of over 100 megawatts (MW) and plans for further expansion in the future.

Coastal Geography and Surrounding Mountains

Numazu lies on the eastern shore of Suruga Bay, backed by the foothills of the Tanzawa Mountains. The city’s coastal landscape is characterized by a gentle slope towards the bay, dotted with sandy beaches and small harbors. The coastline provides access to the Pacific Ocean and is an important economic hub for fishing and tourism.

To the west and north of Numazu, the terrain rises gradually into the Tanzawa Mountains. These mountains are part of the Southern Alps and are known for their scenic beauty and hiking trails. The highest peak in the Tanzawa Mountains, Mount Tanzawa, stands at 1,670 meters above sea level and offers panoramic views of the surrounding region.

Nearest Airport: Shizuoka Airport (FSZ)

Numazu’s nearest airport is Shizuoka Airport (FSZ), located approximately 50 kilometers (31 miles) southwest of the city. It serves as a regional hub for Central Japan, offering domestic flights to major cities such as Tokyo, Osaka, and Nagoya. FSZ offers convenient connections to the rest of the country, making it an ideal gateway for visitors to Numazu.

Alternative Airport: Haneda Airport (HND)

For international travelers, Haneda Airport (HND) in Tokyo is the nearest major airport to Numazu. Located about 140 kilometers (87 miles) northeast of the city, HND provides frequent flights to destinations worldwide. While it requires a longer transfer time, HND offers a wider range of international connections than Shizuoka Airport. Travelers can take the Tokaido Main Line express train from Tokyo Station to Numazu Station in approximately 1 hour 30 minutes.

Geography and Economy

Numazu is a city located in Shizuoka Prefecture, Japan, on the coast of Suruga Bay. It is known for its scenic beauty and abundant natural resources. The city is renowned for its fishing industry, with a vast fish market that attracts both locals and tourists alike. Numazu is also a significant producer of tea and citrus fruits. In recent years, the city has expanded its economy to include tourism, with numerous hot springs, historical sites, and scenic spots attracting visitors from around the country.

Culture and History

Numazu has a rich cultural heritage dating back to the Edo period. The city is home to several notable temples and shrines, including the Numazu Hachiman Shrine and the Kannonji Temple. These sites offer glimpses into the city’s past and provide opportunities for visitors to experience traditional Japanese architecture and religious practices. Additionally, Numazu is known for its vibrant culinary scene, with numerous restaurants serving local specialties such as Numazu-don, a dish consisting of fresh seafood served over a bowl of rice.