site.btaThe Weather on May 18
Colder weather. Rain showers with thunder across the country with chances of torrents and hailstorms. Calmer weather and fewer clouds after noon. Rain will stop almost everywhere by midnight, and wind will drop. Highs: 15C to 16C, up to 25C in the Upper Thracian Plain, around 19C in Sofia.
The Black Sea coast: Mostly cloudy and windy with rain showers which will subside after noon. Moderate to strong northeasterly wind will bring in a colder front. Highs: n13C to 16C. Seawater temperature: 16C.
The mountains: Mostly cloudy and rainy weather with chances of thunderstorms. Moderate to strong northeasterly wind will bring temperatures down considerably. Highs: 13C at 1,200 m, around 6C at 2,000 m.
Source: National Institute of Meteorology and Hydrology.