Here are some of the best treks which can be done in Monsoons:

Valley Of Flowers, Uttarakhand.

Kashmir Great Lakes, Jammu & Kashmir.

Beas Kund, Himachal Pradesh.

Indrahar Pass Trek, Himachal Pradesh

Hi,

The monsoon season is one of the best times to go since it allows you to see the genuine hues of nature. The sight of lush green colour combined with the earthy smell is like a drug to your spirit, whetting your appetite for more. Though there are numerous locations where trekking in the monsoon would be difficult, the picturesque grandeur of the area would be worth the effort.

1.  Harischandragad Trek, Maharashtra
2. Valley Of Flowers, Uttarakhand. ...
3. Sinhagad Trek, Pune. ...
4. Kashmir Great Lakes, Jammu & Kashmir. ...
5. Beas Kund, Himachal Pradesh. ...
6. Hampta Pass, Himachal Pradesh. ...
7. Pin Parvati Trek, Himachal Pradesh. ...
8. Dzongri Trek, Sikkim.
9. Torna Fort Trek, Pune
10. Mullayyanagiri Trek, Karnataka
11. Bhrigu Lake, Himachal Pradesh
12. Indrahar Pass Trek, Himachal Pradesh

You can do the following treks during monsoon in India

1. Harischandragad Trek, Maharashtra: You would be mesmerized with the photographic beauty of the valley and the Konkan Khada here. You can explore the Stone Age caves (Kedareshwara caves) with its three broken pillars where the legend is that the earth would come to an end when the fourth pillar breaks. So why choose this trek in monsoon? It's because this place gives you the scenic beauty in monsoon. Exploring the caves in the rain you would feel relaxed and peaceful. This is a tough trek but you can do this based on your trekking skills.

• Duration- 2 Day
• Difficulty- Moderate
• Altitude- 4690 ft.
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• 2.Valley of Flowers ,Uttarakhand: The monsoon rains cast a spell over this valley by decorating it with a colorful bedsheet of flowers and thus makes the view mesmerizing. The amazing weather is an added bonus to the multihued scenery. You can always spot colorful butterflies, birds, and animals like Musk Deer.

• Duration- 6 Days
• Difficulty- Easy
• Altitude- 15,200ft
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• 3. Sinhagad Trek, Pune: Sinhagad is a hill fortress that provides you an amazing trek experience along with a perfect picnic spot. The beautiful views of sunrise and sunset from this fort are worth capturing. It also blows you off with scenic series of mountains and hills. The monsoon season would make this place much more fascinating adding to it's lush green views. The royal fortress exudes a haunted Qila experience too with its eerie thunder noises.
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Duration- 2 Days

Difficulty- Moderate

Altitude- 4304ft

4. Kashmir Great Lakes, Jammu & Kashmir: In Kashmir Great Lakes trek we can see seven alpine lakes appear , no less. The best part is that every lake is unique and boasts of its own beauty. The season of rains would make this trip much more memorable when all you see around you would be green meadows decorated with colourful flowers. The freshness of it is overwhelming.

• Duration- 8 Days
• Difficulty- Moderate
• Altitude- 13,750ft
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• 5. Beas Kund, Himachal Pradesh: This place is quite close to Manali and also it has been a popular place to trek because during the journey you trek up close to a few of Manali's biggest mountains. You would mostly find grand peaks like, Friendship Peak, Hanuman Tibba, Shitidhar, and Seven Sisters along your side. The monsoon season might make this trek a bit tricky but you would surely enjoy the views. Moreover, it would be a short duration trek and won't be much difficult.
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Duration- 4 Days

Difficulty- Moderate

Altitude- 12,770ft

6. Hampta Pass, Himachal Pradesh: This is an ideal trek for both novice and proficient trekkers as Hampta Pass Trek is famous for the enchanting beauty of the rugged mountains during the monsoon months. This trek would make you experience both types of landscapes- lush green and barren. Kullu would be filled with pine forests and apple trees, streams and waterfalls, but as soon as you cross it, the land would become arid and coloured in stark browns and greys with barren footpaths and vertical rock walls. You would also witness the beautiful Chandratal Lake filled with blue, clear water. Though trekking would be a little tough in the season of the monsoon but you would get to experience the best colours of nature in this beautiful place.

• Duration- 5 Days
• Difficulty- Moderate
• Altitude- 14,010ft
  
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• 7. Pin Parvati Trek, Himachal Pradesh: This is an alternate route to the striking Spiti Valley(Jibi). Since Pin Parvati is one of the oldest treks in the Himalayas it is also known as the 'Valley of Gods'. This valley offers mesmerizing views to the trekkers. It's perfect for seasonal trekkers, passingthrough the woods of Great Himalayan National Park. Monsoon Season is the best to visit this valley because the water would be gushing at full speed and you would get to experience the greenery around you all the time with birds chirping at their melodic best.
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• Duration- 11 Days
• Difficulty- Difficult
• Altitude- 7,500ft
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• there are many more treks which can be covered during monsoon .The above listed are some sorted out ones.
  
  

Yes, I can suggest you some of the best treks to do in Monsoon Season :

1. Hampta Pass Trek, Himachal Pradesh - This is an ideal trek fro beginners and skilled trekkers as the trek is famous for the enchanting beauty of the rugged mountains.

Altitude - 14,010ft

Duration - 4 days

Trek - Moderate

2. Valley of Flowers, Uttrakhand -

This is the best place to visit in Monsoon. The monsoon rains enthralls the valley by decorating it with colorful flowers and makesthe view mesmerizing.

Altitude - 15,200ft

Duration - 5 days

Trek - Easy

3. Bhrigu Lake - It's also considered as the best trek to do Monsoon. It's situated in the upper kullu valley.

In the Monsoon season, many people wish to visit this place.

Altitude - 14,010ft

Duration - 3 days

Trek - Easy

4. Pin Parvati Trek, Himachal Pradesh - Since, Pin Parvati is one of the Oldest treks in the Himalayas it's also known as 'Valley of Gods'. It's the best trek to do in Monsoon you'll get the totally unique experience here.

Altitude - 7,500ft

Duration - 10 Days

Trek - Difficult