August 18 will be predominantly sunny with more clouds in the eastern regions of the country during the afternoon. Rainfalls can be expected in the northeastern regions. Daytime temperatures will rise and the highest will be between 33°C and 38°C, in Sofia around 33°C.

It will be mostly sunny at the Black Sea coast, but in the afternoon cumulus clouds will form and rainfalls are possible. The highest temperature will reach 29°C - 34°C. The temperature of the sea water is 25-27°C.

It will be mostly sunny over the mountains, with more clouds in the afternoon. In some places there will be rainfalls and thunderstorms. The highest temperature at 1200 meters will be around 26°C, at 2000 meters - around 19°C.