Hi Pavni, monsoon is not a safe time for trekking , but it's the most beautiful time to see the beauty of nature in it's most raw form . Now if your not a regular trekker , you need to make sure you don't go trekking in monsoon to treks with high difficulty meter. Also when trekking in monsoon, you need to be well-prepared with your gears including water proof bag , anti-skid and water proof shoes ( Quecha offers one of the best mountaineering gears ) etc ..