As spring takes hold across Japan, residents can expect a marked change in weather patterns starting March 21, 2025. A shift from cold to warm air is anticipated to bring pleasant temperatures nationwide, as indicated by meteorological experts.
On March 20, 2025, stable and sunny conditions will dominate the weather across the nation, coinciding with the vernal equinox. In Shizuoka, for instance, sunset is forecast for 5:58 PM, highlighting the lengthening days of spring. This day will serve as a transition, where morning and evening temperatures remain cool, but the warmth of spring is just around the corner.
According to forecasts, the cold air that has characterized much of the season will be replaced by warm air from the southwest as it moves across Japan. This change will lead to significantly warmer daytime temperatures, rising to around 18°C in regions from Kanto to Kyushu. In many parts of western Japan, temperatures may even exceed 20°C, which is a welcome development as the country gradually shakes off the chill of winter.
In specific areas, high temperatures are projected as follows: Miyazaki will reach 21°C, Tottori, Kochi, Fukuoka, Oita, and Kagoshima are expected to hit 20°C, while cities like Maebashi, Kumagaya, Shizuoka, Nagoya, Saga, and Kumamoto may see maximums around 19°C. Central Tokyo will not lag behind either, with predictions suggesting a high of 18°C, which is consistent with early April norms.
However, the shift does come with a caveat, especially for those located north of the Hokuriku region. Here, humid warm air combining with remnants of cold air will lead to rain and thunderstorms. Meteorologists warn that the conditions in the Sea of Japan region, particularly along the western coasts of Tohoku, will be unstable. Thus, residents should remain cautious for sudden gusts of wind, lightning, and even tornadoes, alongside the risk of hail.
Moreover, the bright day's reality brings a warning in the form of pollen counts, which are already on the rise. For example, in Hamamatsu, the pollen count is reported to be ‘very high.’ Allergies could flare up as the trees begin to bloom with the arrival of spring.
Looking toward the weekend of March 22 and 23, we can expect pleasantly sunny days with temperatures predicted to exceed 20°C in various areas, inviting outdoor activities and early spring excursions. However, as next week progresses, high temperatures might peak, with central Tokyo reaching a likely 25°C on March 26, a typical summer day. These warmer temperatures will also coincide with a predicted bloom for cherry blossoms from Kanto to Kyushu, enhancing the atmosphere with festive spring sights.
Despite the optimistic forecast, meteorologists caution that the warmer conditions may be followed by a return to winter-like weather towards the end of next week. This temperature fluctuation signals the unpredictable nature of spring weather in Japan, which is known for its rapid changes.
In summary, as Japan prepares for the transition to spring, many can look forward to a warmth-filled week ahead, with pleasant temperatures arriving just in time for weekend outings and cherry blossom viewing. However, with the accompanying risks related to storms and pollen, it’s wise to stay informed about the weather to enjoy the season safely.
