✔ 最佳答案
你可參考以下london official travel website 包括weather forcast.
http://www.visitlondon.com/weather/
Spring (Mar - May)
Quite unpredictable with a good mixture of sun, rain and cloud. Temperatures average between 11°C and 15°C. Take a jacket when you go out.
倫敦天氣是很反常, 我前年4-5月去的時候, 8日真的是日日不同. 晴天,陰天,雨天都有.