Japan's weather is set for significant fluctuations as we enter early January 2025, marked by the influence of two low-pressure systems and associated fronts. Rain is expected to span across the country, with specific impacts noted for various regions.
On January 6, widespread rain is anticipated, particularly affecting western Japan as the low-pressure fronts approach. According to reports, the initial rain will start to calm, but scattered showers may persist, especially during the evening. The combination of frontal systems will bring about cold airflows, leading to potential precipitation transitions from rain to snow.
Specifically, the Japan Meteorological Agency forecasts temperatures across regions like the Hokuriku and Tokai areas will rise, with daytime highs expected to exceed 10 degrees Celsius, representing about 2 to 3 degrees higher than the previous day. Nevertheless, cold northern winds may create discomfort, especially on the Sea of Japan side.
Throughout January 7, the winter weather pattern will likely continue, maintaining cloud cover across the regions, with possibilities of rainfall especially along the Coast of the Sea of Japan. By January 8, the pressure systems are expected to lead to significant weather changes as colder air flows dominate, particularly near mountainous terrains.
On January 9, the potential for inland and urban areas to receive snowfall rises as winter weather intensifies. The Japan Meteorological Agency advises commuters to prepare for traffic disruptions due to possible snow accumulation on roads and paths, particularly during the morning commute. Meteorologist Akihiro Akiyama highlights the need for caution on mountain roads and said, "Flexibility will be necessary as the conditions can rapidly change."
Meanwhile, the Okinawa Islands will also experience their share of weather changes, with cloudy skies and regional showers initially, but expected to clear as high pressure reclines over the region. Despite this, strong northwestern winds will persist, influencing sea conditions significantly.
Overall, January 9 may mark the coldest weather condition of the season, prompting advisories for heavy snow or blizzards primarily directed toward the Sea of Japan coast. The Pacific side, contrastingly, is projected to retain drier and sunny weather, yet caution is needed as variations can lead to abrupt shifts from humid to dry air.
Residents across Japan are encouraged to stay updated with local forecasts and exercise appropriate weather precautions during this dynamic start to the new year.