Tomorrow (June 9) the air mass will be unstable, dense cumulus and cumulus-rain clouds will develop. There will be showers and thunderstorm activity, more significant in the southwestern half of the country. There will also be conditions for hail. Winds will be light across most of the country, moderate in the eastern areas. Maximum temperatures will be between 23°C and 28°C, around 23°C in Sofia.

There will be cumulus clouds and light rain over the mountains. In southwestern Bulgaria, rain amounts will be significant. Moderate to strong winds will blow from the north-northeast. Maximum temperature at 1200 m - about 17°C, at 2000 m - about 10°C.

Over the Black Sea coast the cloudiness will be considerable, with short-term precipitation on the southern coast. Moderate south-easterly wind will blow. Maximum air temperatures will be 21°-23°C, the same as the sea water temperature. Sea swell will be 1-2 bar.