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Weather to turn cooler this week under the influence of the northeast monsoon

Weather to turn cooler this week under the influence of the northeast monsoon

2022-12-04

The weather in northern regions became noticeably cooler on Sunday as cold air from the north descended on the island. The coldest periods during this wave are forecast to be in the early hours of Monday and Tuesday, when lows in the northern regions are expected to average 17 degrees. It’ll warm up a little on Wednesday before a second wave of cold air arrives on Thursday. This will send the mercury plunging again to 16 degrees. While the central and southern regions won’t be affected as much, the CWB says residents there should expect large temperature swings between daytime and nighttime.

Saturday’s slightly warmer temperatures proved to be ephemeral as the mercury dropped again on Sunday. The island’s plains saw temperatures of 20 degrees. The current drop in temperatures is just the first of two waves of cold air that will arrive this week.

Liu Pei-teng
CWB forecaster
The first wave started to pick up today and will affect us on Monday and Tuesday. On Wednesday, the northeast monsoon will weaken a little, and temperatures will bounce back a little. But after Thursday, there will be another wave of the northeast monsoon. This next wave will likely be stronger, and temperatures could drop to 16 or 17 degrees.

The first wave of the northeast monsoon already started to make itself felt on Sunday. The forecaster says Taiwan’s northern and eastern regions, particularly in Keelung and along the north coast and mountainous regions in greater Taipei and Yilan, will be prone to localized heavy rains on Monday and Tuesday. Temperatures in northern Taipei will dip to as low as 17 degrees as a result of this first wave of cold air. On Wednesday, the northeast monsoon will weaken, and the weather will warm up. However, on Thursday, another wave of the northeast monsoon will arrive, and its influence will last into the weekend. The northern regions could see lows of 16 and 17 degrees. Even though this will only have a minor impact on the central and southern regions, the CWB reminds the public to pay attention to temperature swings between daytime and nighttime.

Liu Pei-teng
CWB forecaster
The change in rainfall patterns won’t be very great. People in the northern and eastern regions should watch for the possibility of rainfall this coming week. Rainfall on Wednesday will taper off. However, people in the northeastern regions that are on the island’s windward side, along with Keelung and the north coast should watch for heavy rain. Daytime temperatures in the central and southern regions could reach 25 or 26 degrees. So in the coming week, people in the southern and central regions should watch for nighttime and daytime temperature shifts.

The gap between the two waves of cold air won’t feel obvious. Northern Taiwan will get the brunt of the northeast monsoon all week. As the CWB’s Director-General Cheng Ming-dean wrote on Facebook, we’re already into a Taipei winter.

東北季風南下 北部降溫.中南部日夜溫差大

2022-12-04

好天氣不到一天,今天北部明顯感受到降溫,因為有冷空氣南下,這波最冷時間點在週一、週二清晨,北部低溫大約17度,週三有短暫回溫空檔,但週四緊接著,又有一波冷空氣南下,北部低溫下探16度,雖然中南部影響小,但氣象局也提醒,得留意日夜溫差。

週六才回暖一天,週日氣溫又下降,平地低溫都在20度以下,而且接力兩波冷空氣報到。

[[氣象局預報員 劉沛滕]]
“第一波就是從今天開始增強,禮拜一、禮拜二影響我們,週三的時候東北季風稍微減弱,氣溫略微回升一點點。但是很快的週四以後,又有下一波東北季風增強,下一波的東北季風可能再強一點,可能來到16、17度。”

東北季風假日開始影響,緊接著週一、週二,北部東半部,尤其基隆北海岸、大台北山區,以及宜蘭容易出現局部大雨,第一波冷空氣北台灣低溫大致在17度。週三東北季風減弱,氣溫稍回升,但下一波東北季風週四開始增強,持續影響到週末,北部低溫約16、17度左右。雖然中南部影響小,但氣象局也提醒,要留意日夜溫差。

[[氣象局預報員 劉沛滕]]
“降雨雨型變化並不是非常大,北部、東半部未來這一週都要留意可能會有降雨情形。週三這天北部降雨稍微減緩一點,不過在迎風面東北部跟基隆北海岸,還是要留意較大雨勢。中南部白天高溫可能還有25、26度,所以未來這一週中南部都要留意日夜溫差大的型態。”

兩波冷空氣空檔不明顯,北台灣幾乎整週都是迎風面,中央氣象局長鄭明典也在臉書形容,已經進入典型台北冬季。

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