Bulgaria's National Institute of Meteorology and Hydrology (NIMH) has issued an orange code for strong wind in nine regions and a yellow code in 17 others.

The orange code covers Burgas, Varna, Vratsa, Dobrich, Montana, Stara Zagora, Shumen, Haskovo and Yambol.

The yellow code covers Veliko Tarnovo, Vidin, Gabrovo, Kardzhali, Kyustendil, Lovech, Pazardzhik, Pernik, Pleven, Plovdiv, Razgrad, Ruse, Silistra, Sliven, Sofia region, Sofia city and Targovishte.

The wind will be moderate and blow from the south-southwest. In eastern Bulgaria and along the northern mountain slopes, it will become strong and stormy. Cloud cover will vary.

Highs will be between 20C and 25C, which is warm for the time of year. In places sensitive to a southerly wind, temperatures will reach 27-28C, while Sofia will see about 21C.

Towards evening, cloud from the northwest will thicken and spread, and rain will fall.