Weather Forecast for Cardiff

Information on update: Likelihood of medium impacts increased, including some tweaks to the warning area (mainly to extend northwards across Wales). Outbreaks of rain will become persistent and heavy on Monday night into Tuesday morning, and whilst the rain may be more intermittent during Tuesday daytime some occasional heavy bursts will still be possible. There will naturally be some variation in rainfall totals across the area, but accumulations of 20-40 mm are likely in quite a few places, with 60-80 mm over Dartmoor and high ground in Wales. There is a small chance of 80-100 mm falling over the most exposed, prone hills. Given the saturated nature of the ground, this is likely to lead to some flooding in places and transport disruption. Rain will also be accompanied by strengthening southerly winds, which may exacerbate impacts. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Check if your property could be at risk of flooding. If so, consider preparing a flood plan and an emergency flood kit. Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.

At 07:10 on December 8, 2025, Suining Meteorological Observatory issued a yellow warning signal for heavy fog: Yangdu Street, Ciyin Street, Jiulian Street, Jiahe Street, Guangde Temple Street, Yucai Road Street, Zhenjiang Temple Street, Kaixuan Road Street, Jiefu Road Street, Nanjin Road Street, Fuyuan Road Street, Xining Street, Tangjia Township, Baosheng Town, Laochi Town, Beigu Town, Yongxing Town, Guihua Town, Xinqiao Town, Hesha Town, Longfeng Town, Renli Town, Lingquan Street, Nanqiang Street in Chuanshan District, Rougang Street, Fenghuang Street, Changyi Town, Juxian Town, Moxi Town, Ximei Town, Yufeng Town, Sanqiang Street in Anju District. There may be fog with visibility less than 500 meters within 12 hours in towns (streets) such as Jiazhen, Baoshi Town, Lanjiang Town, Shidong Town, Fenshui Town, Dongchan Town, Huilong Town, Hengshan Town, Zhongxing Town, Baima Town, Anju Town, etc. Driving in foggy weather, remind drivers to use lights reasonably, drive cautiously, and prevent traffic accidents from happening.

1. The government and relevant departments should prepare for anti fog measures; 2. Airports, railways, highways, shipping and other units should strengthen traffic management to ensure safety; 3. Drivers should pay attention to changes in fog and drive carefully; 4. Pay attention to safety during outdoor activities, and minimize outdoor activities for the elderly, weak, sick, and young.

At 10:45 on December 8, 2025, Suining Meteorological Observatory issued a yellow warning signal for heavy fog.

South to southwesterly winds will strengthen on Monday night and remain strong and gusty into Tuesday morning, before gradually easing through Tuesday afternoon. Peak gusts of 40-50 mph are expected fairly widely, but gusts of 60-70 mph will be possible along some exposed coasts and over/to the north of high ground. There is a small chance of gusts in excess of 70 mph over northwest Wales. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. If you are on the coast, stay safe during stormy weather by being aware of large waves. Even from the shore large breaking waves can sweep you off your feet and out to sea. Take care if walking near cliffs; know your route and keep dogs on a lead. In an emergency, call 999 and ask for the Coastguard. Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.