The town of Sandanski is situated on the river bank of the river Sandanski-Bistritza in the foot of the west slopes of Pirin mountain, at 224 m above the sea level.The climate of the resort is temperate continental with significant mediterranean influence. The winter is mild with transient snow cover, the spring comes early, the summer is dry and hot, the autumn is hot and long. The percipitation is weak by density and quantity (average 66 days per year, about 550 mm/m?, the maximum is in December, the minimum is in August). Low to medium cloud, the maximum is in December, the minimum is in August. Fogs are rare (average 7 days yearly). The relative humidity is very low. The wind is weak to medium.The unique climate, the unbelievable purity of air and the absolute absence of allergens make the resort especially suitable for prevention and treatment of the upper air passages and bronchial asthma. According to the scientific researches, the percentage of amelioration of all forms of bronchial asthma during any season of the year is considerable. The atopic form is the most successful to cure, it is followed by the mixed infection allergic asthma. The season and the form of the bronchial asthma influences the treatment response. The best effect in atopic asthma cure is produced by spa treatment in autumn – 96,7% and the lowest in summer – 86,8%, the best response in infection allergic bronchial asthma treatment is attained in summer – 99.3% and the lowest in spring – 79,1%, in mixed form treatment the highest response is in autumn – 92,6% and the lowest in spring – 76%.The scientific research in the sphere of remote treatment results and the observations on the patients who moved in to the resort give all grounds to state that the optimal duration of treatment of chronic non-specific respiratory apparatus diseases is about 30 days. The obtain a relatively long clinical remission among the patients with severe forms of the disease, the treatment should continue from 3 to 6 months
Meteorological еlements: Rainy days 65,6 , Foggy days 7,4 , Snow days 13,1 , Altitude 190 m, Clouds 50 %, Relative humidity 67 %, Suitable for bathing 25.04 - 15.10 , Wind speed 2,0 m/s, Air temperature 13,9 C
January: Rainy days 7,8 , Foggy days 2,0 , Snow days 6,6 , Clouds 65 %, Relative humidity 80 %, Wind speed 2,1 m/s, Air temperature 2,4 C
February: Relative humidity 74 %, Wind speed 2,6 m/s, Air temperature 4,2 C
March: Relative humidity 66 %, Wind speed 2,9 m/s, Air temperature 8,4 C
April: Rainy days 7,4 , Foggy days 0,3 , Snow days 0,0 , Clouds 55 %, Relative humidity 63 %, Wind speed 2,4 m/s, Air temperature 13,7 C
May: Relative humidity 63 %, Wind speed 2,1 m/s, Air temperature 18,1 C
June: Relative humidity 60 %, Wind speed 2,1 m/s, Air temperature 22,1 C
July: Rainy days 5,7 , Foggy days 0,0 , Snow days 0,0 , Clouds 29 %, Relative humidity 54 %, Wind speed 2,0 m/s, Air temperature 24,6 C
August: Relative humidity 53 %, Wind speed 1,8 m/s, Air temperature 24,6 C
September: Relative humidity 60 %, Wind speed 1,5 m/s, Air temperature 20,8 C
October: Rainy days 8,7 , Foggy days 0,4 , Snow days 0,0 , Clouds 48 %, Relative humidity 70 %, Wind speed 1,5 m/s, Air temperature 14,8 C
November: Relative humidity 79 %, Wind speed 1,7 m/s, Air temperature 9,1 C
December: Relative humidity 80 %, Wind speed 1,8 m/s, Air temperature 4,1 C