Devin (Девин, [ˈdevin]) is a town in Smolyan Province in the far south of Bulgaria.
The Devinska river runs through it and numerous other brooks and rivers (namely Krichim, Muglenska and Trigradska) are found nearby, all tributaries of the Vacha river. The altitude is uneven owing to the mountainous location, ranging from 684 m to around 800 m above sea level.
Devin's climate is described as having mild winters, cool summers with prolonged spells of sunny days. The air is pleasantly cool and crisp and humidity is normal. The mean annual temperature is 4 to 10 °C, depending on altitude. The lowest winter temperature is around -10 °C while the maximum summer temperature is in the region of 30 to 33°C. Devin is protected from cold and violent westerly and north westerly winds due to the ridges that surround the town.
A popular brand of mineral water being sold under the name Devin is bottled there.
The situation of Devin offers access to nearby gorges, rock formations, caves, forests, natural reserves with protected and endemic species, and most of all, clean air. Namely Trigrad gorge, the Devil's Throat cave and Yagodinska cave. The Trigrad-Yagodina region has a karst scenery and has tens of other, albeit inhospitable, caves and rock formations. The protected region "Chairité" attracts visitors with an abundance of lakes, meadows and spruce and beech forests, one of which is called "the Drunken Forest" (Bulgarian: Пияната гора.) "Kastraklii", "Kazanite" and "Shabanitza" are natural reserves in the region around Devin with centuries-old pine and spruce forests and protected plant and animal communities.