Gangtok is beautiful in Feb. However, if you wish to visit places like Yumthank and Gurudongmaar in north Sikkim it might become inconvenient as every year that part witnesses heavy snowfall and roads remain blocked. April is a good time though.
Feb is a good time to visit North-east...Yumthang valley (north sikkim) would be covered with snow (it will be cold so go well prepared), the blooms are visible during April. Shillong is good any time.of the year except monsoon. I suggest you add Cherapunji, Mawsynram, Guwahti and Kaziranga to your itinerary.
Sikkim is best in my opinion and then Gangtok..
if you wait for 1 month, then there is valley of flowers Which blossom in the month of April.
and don't try to cover every place if you planning for short trip, it will be very hectic
February is definitely a good time. Most of the Northeast region has a problem with road connectivity so, February being a dry month it's definitely a good time and Northeast look beautiful anytime of the year. But let me tell you it will be cold so make sure to carry warm clothes and you are good to go. if you are going Sikkim go to North, it has exciting adventure sight and for Meghalaya I would suggest Sohra they are mainstream but if it's your first time you should definitely see those places.
Yes, winter is good time to visit Shillong, or other places in Meghalaya. However extreme snowfall may block your roads towards Sikkim or Arunachal. A visit to any other north east state is also a good idea to travel during winter.
Hey I'm From shillong and I would like to suggest you to these beautiful places like, Cherapunjee where you can find and enjoy with numbers of Waterfalls apart from that you can also visit arwah and mawsmai caves in cherapunjee roots, also try to visit krang-suri waterfalls which is in jowai in Jaintia Hills district of Meghalaya 3rd place you can visit is dawki river which is like 40KM far from krang-suri falls.4th is Mawynsynram which is known for Asia's Highest rainfall, 5th one is Mawlynglong vilages know fot its cleaness and it is also popular for Asia's cleanest village, coming back to City you can visit in elephant Falls, lady hydrilla park, Ward's lake, Shillong peak as well as Golf course and last one is Umniam lake which is in Barapani while you will come to Shillong from Guwahati airport then before reaching Shillong you can find this amazing and beautiful lake of which.For more details please ping me in instagram @portrait_photography.in