The town has a convenient location, a mild to warm climate (with the highest average annual temperature in the country, +16°C) and relatively high concentration of thermal water springs, which all make it a popular destination for relaxation and recreation.
Sandanski has developed in an amphitheatrical fashion on the outer south-west flanks of Pirin Mountains along the lower reaches of Sandanska Bistritsa River. The town's altitude varies between 240 and 300 meters. Its geographical location between Kresna and Rupel Gorges determines the town's mild winter and unpleasant summer temperatures. Statistically Sandanski has the warmest temperatures in Bulgaria with a total of around 2700 annual sunshine hours.
Within a short drive from Sandanski is Melnik, the smallest town in Bulgaria in terms of population, but an attractive tourist destination for its authentic architecture and wine production. In a close proximity are the village of Rozhen and Rozhen Monastery. The Ancient Roman city of Parthicopolis was located nearby.[3]
Climate
Sandanski has a temperate climate (Köppen Climate Classification: Cfa). Summers are very hot and dry with occasional thunderstorms and during heat waves the temperature may exceed 40 °C reaching to 45 °C, the highest recorded temperature in the city. Winters are damp and relatively mild, lasting for about three months from December through February. Springs and falls are generally about two months each. The summer is the longest season in Sandanski, lasting 4 months – from early June to late September. Precipitation is evenly distributed throughout the year except for July and August when droughts often occur.
Climate table:
Climate data for Sandanski (1991–2020), Extremes 1961-2020
^"История" (in Bulgarian). Archived from the original on 2008-10-02. Retrieved 18 September 2016.
^Kantor, Georgy (2021). Lavan, Myles; Ando, Clifford (eds.). Roman and local citizenship in the long second century CE. New York, NY. p. 236 n. 21. ISBN978-0-19-757389-1.{{cite book}}: CS1 maint: location missing publisher (link)