Visiting Sikkim i July is not otherwise adviseable as it is Rainy Season and there can be cases of land slide and road blocking. Anyhow itinerary will be:
1. Arrival At Pakyong Airport (Sikkim)/ Bagdogra Airport- Transfer to Gangtok. Local Sight Seeing/ MExplore Markets as per available time at your disposal.
2. Visit- Nathula Border, Baba Harbhajan Mandir and Tsomgo Lake. Enroute a waterfall.
3. Visit- Lachen enroute enjoy man water falls and scheneic beauty.
4. Early morning visit to Gurudongmar Lake, Chopta Valley and transfer to Lachung.
5. Visit to Yomthang and Yumesamdong/ Zero Point and return to Gangtok.
6. Local Sight Seeing and transfer to Pelling.
7. Nearby sight seeing and return to Pakyong/ Bagdogra.
Meghalaya is well known for its forests and waterfalls in the hills. Rainy season is best for Meghalaya trip and definitely not Sikkim. Visit Sikkim from March to May.
Sikkim is good. Best Time to visit Sikkim is October to December and March to May. Below is the itinerary we followed when we visited Sikkim:
Day-1:Flight to Bagdogra and reached Siliguri
Day-2:Siliguri to Gangtok and applied for necessary permits.Sight-seeing in Gangtok.
Day-3:Gangtok to Lachen.
Day-4:Gurudongmar Lake and Kaala Patthar. Reached Lachung by evening.
Day-5:Yumthang Valley and Zero Point.Back to Gangtok.
Day-6:Nathula Pass and Tsomgo Lake.
Day-7:Char Dham in Namchi. Reached Ravangla and visited Buddha Park.
Day-8:Rabdenste Ruins and back to Siliguri.