Mae Hong Son has several tour operators that specialise in trekking. Treks are designed to expose visitors to splendor nature and a variety of hilltribes. The adventure may combine jungle walks with elephant riding and river rafting. The cool winter months of November to February are the best time to travel. Avoid the height of the rainy season in August and September. In the dry months between March and May, the temperature can soar uncomfortably high for strenuous mountain hikes.