Best time to visit Assam is in between November to May because at this time you can find moderate weather due to the winds blowing from himalayan sides towards Assam. Winds from mountain sides also reduce the heat and humidity and provide a cool breeze for all living beings of Assam.

Bihu festival is celebrated between March and May when these beautiful and stunning orchids bloom. This time is also considered as a joy rhythm for the local peoples because at this period of time they celebrate their harvesting festival called as Bihu.

Some best things to do in Assam are as Follows:
Go for a river cruise: The Brahmaputra river that flows through Assam offers you an opportunity to do a river cruise in it. It also allows you to witness underwater lifes. There are different-different types of cruises available with dinner and other inclusion facilities.
Do a wildlife safari: Assam serves various endangered species in its lap and the best way to observe them is through a wildlife exploration in their required zones or regions. Some must visit places to witness them are Kaziranga National Park, Manas National Park, Orang National Park etc.
Watch the traditional festival of Assam: Bihu, a traditional festival of Assam which is celebrated three times in a year; January, April and October respectively. It is considered as the biggest festival of Assam which includes dancing and folk music, cultural activities, fares etc.
Enjoy adventure activities: Assam is considered as a home of enormous water-bodies which helps its visitors to do a lot of water activities like boating, fishing, rafting etc.

Wildlife exploration: Assam is home to ⅔ of the world largest population of one horned Rhinoceros along with various endangered species like tigers, leopards, wild cats etc. you can witness them by doing a safari in their regions.
Rafting: Like Brahmaputra there are many other rivers flowing through Assam which allows its visitors to perform this rafting activity on their high tides and currents.
Trekking: Mesmerising landscapes of mixed lands around the town of Lilabari and Adamail zone gives an excellent site for trekking.
Camping: you can experience a camping activity in the middle of a natural setting in Assam. You can do this activity near Lilabari town and one of the best things about this camping activity is you can witness the charming views of himalayas from it.

Some best places are as follows:
Kaziranga National Park: This is one of the famous sites to visit in Assam, as it serves some of the endangered species in its lap like tiger, leopard, wild cats, swamp deer etc along with the largest population of one-horned rhinoceros in entire India. Apart from it you can also witness a variety of plants and animals in a particular habitat.
Majuli Island: It is known as the world’s largest island situated on a river, it covers an area of 352 square Km. During monsoon most of the parts of this island goes underwater. This island is supposed to be a part of heaven for birds-watchers as they can witness varieties of migratory birds on this island.
Haflong lake: The required lake is considered as the heart of Haflong city, it is also considered as the popular attraction among the locals. You can perform various water-sports here like fishing, boating etc. This lake also has a great number of tortoises in it.

In terms of natural luxury Assam is considered as a great state in north-east India as you can find several wildlife reserves, natural attractions, tea-gardens, tribal culture, local heritages etc here. All these things make Assam a worthwhile place.

You will be needing a 6-7 days trip to explore all the beautiful and adventure sites of Assam. During these days you are able to do sightseeing, activities, and shopping. You can also interact with local peoples and their culture for a lifetime remembrance.

Some of the well known resorts situated within the state of Assam are:
Resort Borgas
Aarian woods resort
United 21 Grassland Resorts
Brahmaputra Jungle Resort
Zizina Resort

Yes, Assam is extremely safe for visiting but there is only one thing the visitors have to keep in mind that avoid visiting during monsoon season because at this time Assam suffers from heavy flood. Apart from monsoon season you can visit Assam at any period of time.

In Assam monsoon season starts from the end of May and lasts till October, the required temperature at this point of time is nearly 35 degree celsius. You can also plan a trip to Assam during monsoon season if you are a water-sports lover.