The Taiwan weather forecast from May 9 to 12: A weather front will bring thunderstorms and cooler temperatures, and the weather will stabilize after the 12th.

From May 9 to 11, Taiwan will be affected by a weather front, bringing scattered showers or thunderstorms to northern and central-southern Taiwan, with an 80% chance of precipitation. Some areas may experience brief heavy rain and lightning strikes. Temperatures in the north and northeast will drop to highs of 23 to 26 degrees Celsius, while central and southern regions will remain muggy with temperatures exceeding 30 degrees Celsius. Once the front moves south to the Bashi Channel on May 12, the weather will stabilize, becoming mostly sunny to partly cloudy across the island, making it ideal for outdoor activities.

Front Arrives: Weather Changes Starting Afternoon of May 9

On May 9 (Friday) during the day, Taiwan will still have sunny and hot weather, with southern temperatures reaching up to 36°C, and a chance of foehn winds in the southeastern regions. However, from the afternoon, the atmosphere will become unstable, with localized thunderstorms appearing in the north, Yilan, Hualien, and central and southern mountainous areas. In the evening, as the front approaches, areas from central Taiwan northward will experience brief showers or thunderstorms, possibly accompanied by short-duration heavy rain.

Temperature-wise, the high in the north will be around 33°C, 34°C in the central region, and over 36°C in the south, with lows generally between 23 to 26°C. Due to increased moisture, the air will be humid and feel muggy, so outdoor activities require sun protection and hydration.

Weekend Weather Overview: Rain Across Taiwan, Temperatures Drop on May 10-11

May 10 (Saturday): Rain Expands, Cooler in the North

The front will officially pass through Taiwan on the 10th, with significant rainfall in the western and northeastern regions, especially along the northern and central coasts, where convective systems will be highly active, possibly bringing thunderstorms, strong winds, and sudden heavy rain. Mountain areas should be particularly cautious of short-duration heavy rain, landslides, and rapid river rises.

Temperature-wise, highs in the north and northeast will drop to 23-26°C, around 27-30°C in the central and Hualien-Taitung regions, while the south can still reach above 30°C. In the evening, lows in areas from central Taiwan northward and in Yilan and Hualien will further drop to 19-21°C, feeling noticeably cooler.

May 11 (Sunday): Mother's Day Rain Shifts South, Eases in Central and Northern Regions

As the front gradually moves south to southern Taiwan, the rain hotspot will shift from north to south. Rain in the north and Yilan may ease or even stop in the afternoon, and rain in the central region will gradually weaken in the evening. However, the south and Taitung will continue to have chances of rain, with possible localized heavy rain.

In terms of temperature, highs in the north will further drop to 18-22°C, 20-23°C in the central region, and remain at 23-27°C in the south. Overall, it will be cooler throughout the day in areas from central Taiwan northward and in Hualien-Taitung, with a chill in the morning and evening in other regions.

May 12 (Monday): Front Moves Away, Weather Stabilizes

By the morning of the 12th, the front will have moved southward to the Bashi Channel, with weather turning to partly cloudy to sunny in the north, central, and Hualien-Taitung regions. In the afternoon, there may be isolated brief showers in the northern mountainous areas. The south and Taitung will still have localized brief showers or thunderstorms in the first half of the day, but the weather will gradually stabilize in the afternoon.

Temperature-wise, highs in the north will rise to 26-29°C, around 26-28°C in the central and southern regions, with lows generally between 20-23°C. The overall weather pattern will stabilize, making it suitable for outdoor activities and delayed Mother's Day celebrations.

Weather Overview by Region (May 9-12)

Region	May 9	May 10	May 11	May 12
North	Cloudy with afternoon thunderstorms, high 33°C	Showers or thunderstorms, high 24-26°C	Showers transitioning to cloudy, high 22°C	Partly cloudy to sunny, high 27°C
Central	Cloudy with afternoon thunderstorms, high 34°C	Showers or thunderstorms, high 27-30°C	Showers transitioning to cloudy, high 23°C	Partly cloudy to sunny, high 28°C
South	Cloudy with afternoon thunderstorms, high 36°C	Showers or thunderstorms, high 30-32°C	Showers, high 27°C	Showers transitioning to cloudy, high 27°C
East	Cloudy with afternoon thunderstorms, high 30°C	Showers or thunderstorms, high 26-29°C	Showers, high 26°C	Cloudy, high 27°C
Islands	Cloudy with brief showers, high 30°C	Showers or thunderstorms, high 27-30°C	Showers, high 26°C	Cloudy, high 28°C

Severe Weather Alerts and Life Suggestions

During the weekend (May 10-11), the front will have a significant impact, so people should bring rain gear when going out and be aware of lightning, strong winds, and short-duration heavy rain.
Mountain activities should be cautious of landslides, falling rocks, and rapid river rises, and it is advisable to avoid high-risk areas.
In the north and northeast, temperatures will drop sharply, so it is recommended to add clothing to avoid catching a cold.
From the 12th, the weather will stabilize, making it suitable for outdoor activities, but there may still be isolated afternoon thunderstorms in the mountains, so it is advised to avoid hiking or camping in the afternoon.