The Hong Kong Observatory issued a special weather advisory and a thunderstorm warning on May 6, 2025, as unstable weather conditions began to affect the region. At approximately 4:45 PM, officials indicated that a rainstorm area associated with a low-pressure trough was impacting the Pearl River Estuary. Heavy rain and squally thunderstorms were projected for parts of the New Territories in the next two to three hours, prompting residents to stay alert.
By 8:00 PM, the Observatory had re-issued a thunderstorm warning, forecasting localized thunderstorms over Tai Mo Shan and the western and northern New Territories. The warning remained in effect until 10:30 PM, highlighting the potential for severe weather in these areas.
As the evening progressed, the Observatory reported that heavy rain and thunderstorms were affecting Shenzhen and the northern New Territories, with some locations recording over 10 millimeters of rainfall. This was compounded by a low-pressure area bringing further instability to the central South China Sea.
In its weather forecast update at 4:30 PM, the Observatory noted that the current low-pressure trough affecting Guangdong was expected to weaken gradually. This would lead to hotter weather in coastal areas over the next few days, with fewer rain showers anticipated. However, another low-pressure trough was predicted to approach the southern China coast by the weekend, bringing back the likelihood of unstable weather.
Looking ahead to the coming days, the forecast indicated that May 7, 2025, would be partly sunny and hot, with maximum temperatures reaching around 31 degrees Celsius in urban areas and a couple of degrees higher in the New Territories. Light to moderate easterly to southeasterly winds were expected to accompany the heat, with temperatures ranging from 26 to 31 degrees Celsius.
On Thursday, May 8, 2025, the weather was expected to be partly sunny with a few showers, while Friday, May 9, 2025, would also be hot during the day, with maximum temperatures climbing to between 27 and 32 degrees Celsius. However, later in the day, a few showers and thunderstorms were anticipated.
As the weekend approached, the forecast for Saturday, May 10, 2025, indicated a significant shift in weather patterns. A low-pressure trough was set to influence the region, causing temperatures to drop by approximately 8 degrees Celsius compared to the previous day. The forecast high was expected to be around 29 degrees Celsius, with cloudy skies and occasional showers and thunderstorms.
Mother's Day, falling on Sunday, May 11, 2025, is predicted to be unstable as well, with cloudy skies and a few showers, including localized thunderstorms initially. The temperature is expected to range from 23 to 27 degrees Celsius, continuing the trend of variable weather.
From May 12, 2025, to May 15, 2025, the forecast suggests that showers will persist. On May 12, 2025, the weather will be partly sunny during the day, with temperatures rising slightly to between 24 and 28 degrees Celsius. Following this, temperatures are expected to gradually increase, with minimum temperatures rising to 26 and 27 degrees Celsius on May 14 and May 15, 2025, and maximum temperatures reaching up to 31 degrees Celsius, indicating hot weather during the day.
As residents prepare for the upcoming weather changes, the Hong Kong Observatory continues to monitor conditions closely, urging the public to remain vigilant and stay updated on weather advisories.
