Primorsko is a town and seaside resort in southeastern Bulgaria, part of Burgas Province. A well-known resort on the Bulgarian Black Sea Coast, it is located on a gore 52 km south of Burgas and has a beach strip of about 1 km². The average temperature is 29 °C in July, often reaching 30-33 °C and making Primorsko a favourable place for tourism. Sea temperature in July and August is 27-28 °C. Primorsko enjoys more than 2300 sunshine hours a year, mostly in summertime. The rivers Ropotamo and Dyavolska reka run close to the town. The Ropotamo nature reserve and Snake Island reserve are also nearby.