The Japan Meteorological Agency has issued an early warning regarding unusually high temperatures expected across the country starting from May 14, 2025. This forecast suggests that temperatures may reach levels typically seen only once every decade during this time of year. The agency's announcement on May 8 has raised concerns about heat-related health risks, especially as the summer season approaches.
According to the agency, several regions will experience significant temperature increases. In Hokkaido, for instance, temperatures are predicted to be considerably high, with a five-day average temperature difference of at least +2.9°C compared to the seasonal average. Similarly, the Tohoku region is expected to see a notable rise, with a forecasted average temperature difference of +2.1°C. The Kanto Koshin region will also be affected, with temperatures projected to exceed the average by +2.0°C or more.
As the weather heats up, the Hokuriku region is forecasted to experience a similar pattern, with temperatures expected to be at least +2.2°C above average. The Tokai region will also see considerably high temperatures, with a minimum difference of +1.6°C. Meanwhile, in the Kinki region, the temperature is projected to rise by +1.8°C, and the Chugoku region is expected to experience an increase of +1.9°C. These forecasts indicate a nationwide trend of elevated temperatures that could pose risks for heat-related illnesses.
Weather News has reported that the middle of May will be particularly hot, necessitating caution against heatstroke. In western and eastern Japan, temperatures may approach 30°C on sunny days, while northern regions are expected to see summer-like conditions with temperatures exceeding 25°C. The agency emphasizes that the heat will likely continue beyond May, with the average temperature for the month projected to be higher than normal across the country.
In addition to the heat, the Japan Meteorological Agency's one-month forecast highlights increased rainfall in certain areas. The Kanto and Tokai regions are expected to experience higher-than-average precipitation, while Okinawa and Amami will see many cloudy and rainy days as they approach the rainy season. The forecast indicates that the Kanto Koshin and Tokai regions will have rainfall levels above the seasonal average, while western Japan, Hokuriku, and Tohoku may see precipitation near or above average. Hokkaido, on the other hand, is expected to have cyclical weather patterns with a near-average outlook.
As the temperatures rise, health experts are urging the public to take precautions against heat-related illnesses. Staying hydrated, avoiding strenuous outdoor activities during peak heat hours, and wearing appropriate clothing are essential steps to mitigate the risks associated with the upcoming heatwave. The Japan Meteorological Agency is expected to continue monitoring the situation closely and provide updates as necessary.
In summary, Japan is bracing for a significant heatwave starting mid-May, with temperature increases expected across all regions. The Japan Meteorological Agency's early warning serves as a reminder for residents to prepare for the heat and stay informed about weather updates. With the combination of high temperatures and increased rainfall in certain areas, it is crucial for individuals to remain vigilant and prioritize their health and safety during this period.
