Bulgaria's weather institute NIMH has issued a yellow warning for heavy rain in two regions, Burgas and Yambol. Local floods are possible, and heavy rain and thunder are expected along the south coast.

A yellow warning calls on people to be careful. The rain may force outdoor activities to stop, and driving will be hard because of poor visibility and aquaplaning.

It will be cloudy across Bulgaria, with fog in the lowlands in the morning. Rain is expected in many places. The Black Sea coast will see heavy cloud, and central and eastern Bulgaria will also have thunder.