Last Updated on 2025 年 4 月 23 日 by 総合編集組
Taiwan Weather Alert: A Rainy Week with Sharp Temperature Drops Starting April 23, 2025
Taiwan is bracing for a significant weather shift as a powerful frontal system approaches, bringing four consecutive days of rain and thunderstorms from April 23 to April 26, 2025. Accompanied by a dramatic temperature drop, this weather event will transform the island’s current scorching heat into a cool, wet environment. Drawing from authoritative sources like the Central Weather Administration (CWA) and WeatherRisk, this summary outlines the upcoming weather patterns, regional impacts, and practical tips to help residents and visitors prepare. Whether you’re planning outdoor activities or daily commutes, staying informed is key to navigating this turbulent week.
April 22: Record-Breaking Heat Before the Storm
On April 22, Taiwan enjoys its final day of clear skies and intense heat, potentially marking 2025’s hottest day. Highs will range from 32°C to 35°C across most regions, with eastern Taiwan, particularly Taitung, facing a risk of föhn winds pushing temperatures to 38°C or higher. Greater Taipei and southern mountainous areas may also hit 36-37°C. The CWA has issued heat warnings for six counties, including Taitung and Pingtung, urging precautions against heatstroke. Only scattered showers are expected in mountainous areas during the afternoon, making it an ideal day for outdoor plans—provided sunscreen and hydration are prioritized.
April 23: Frontal System Arrives, Rain Begins
The weather takes a sharp turn on April 23 as the frontal system reaches Taiwan, moving from north to south. Northern and northeastern regions, including Taipei and Keelung, will see cloudy skies and short bursts of rain or thunderstorms starting in the early morning. By midday, central Taiwan and Hualien will experience showers, with some areas at risk of heavier rainfall and gusty winds.
Southern and southeastern, southeastern regions will remain relatively dry until the afternoon or evening, when localized showers are expected. Temperatures will drop noticeably in the north and northeast to 28-30°C, while central and southern areas remain muggy at 30-33°C. Fog and low clouds may reduce visibility in central and northern areas, as well as Kinmen and Matsu, prompting cautions for drivers and travelers.
April 24-26: Peak Rainfall and Cooling Trend
The most unstable weather arrives from April 24 to April 26, driven by the frontal system and an influx of moisture from the South China cloud band. Northern, central, and northeastern Taiwan will face frequent showers and thunderstorms, with localized heavy rain possible, particularly on April 24 and 25. Southern and eastern regions, including Kaohsiung and Taitung, will see lighter, intermittent showers but are not entirely spared. Temperatures will plummet further, with northern highs dropping to 21-24°C and lows reaching 16-18°C in open areas.
Central and eastern regions will hover between 24-28°C, while the south maintains warmer highs of 29-32°C. April 25 is expected to be the coldest day, with chilly mornings in the north. Mountainous areas face risks of flash floods and landslides, and coastal regions may experience strong winds, affecting maritime activities.
April 27: Gradual Improvement
By April 27, the frontal system begins to weaken, and rainfall diminishes across Taiwan. Northern and eastern regions, as well as Hengchun Peninsula, may still see brief showers, particularly in the afternoon in mountainous areas. However, the overall intensity and coverage of rain will decrease. Temperatures will rebound, with northern highs climbing to 28-29°C and southern areas reaching around 30°C, offering a more comfortable end to the week. Despite the improvement, another frontal system is forecast to approach late on April 27, potentially bringing more rain by April 28, so vigilance remains essential.
Regional Impacts and Risks
- Northern Taiwan: Expect the most significant rainfall and temperature drops, with Taipei and surrounding areas facing potential urban flooding and traffic disruptions. The sharp cooling from 35°C to 21°C demands wardrobe adjustments.
- Central Taiwan: Moderate to heavy rain, especially in mountainous areas, raises concerns about landslides and river swelling. Temperatures will cool to 24-28°C.
- Southern Taiwan: Lighter showers and milder temperature drops (29-32°C) make the south less affected, though afternoon thunderstorms are possible.
- Eastern Taiwan: Coastal winds and intermittent rain will impact Hualien and Taitung, with temperatures dropping to 22-24°C midweek.
Preparation Tips for Residents and Visitors
To navigate this rainy and cool period, consider the following:
- Carry Rain Gear: Umbrellas or raincoats are essential from April 23-26 to handle sudden downpours.
- Dress for Cooler Weather: Layered clothing, especially in the north, will help with morning lows of 16-18°C.
- Monitor Traffic and Flight Updates: Fog and rain may disrupt road and air travel, particularly in Kinmen, Matsu, and central Taiwan.
- Avoid High-Risk Areas: Steer clear of riversides and mountainous trails during heavy rain to avoid flash floods or landslides.
- Stay Informed: Check real-time updates from the CWA or weather apps to adjust plans as conditions evolve.
Conclusion
Taiwan’s weather from April 23 to April 27, 2025, will be marked by widespread rain, thunderstorms, and a significant temperature drop, transitioning from summer-like heat to autumnal chill. While the south and east will experience milder impacts, northern and central regions will bear the brunt of this frontal system. By preparing for wet and cool conditions and staying updated on forecasts, residents and visitors can minimize disruptions and stay safe. As another front looms by April 28, keeping a close eye on weather developments will be crucial for the week ahead.
