Santorini or in Greek ( Σαντορίνη ) , pronounced ([sandoˈrini]), is an island in the southern Aegean Sea, about 200 km (120 mi) southeast of Greece's mainland. It is the largest island of a small, circular archipelago. It forms the southernmost member of the Cyclades group of islands.

With an area of approximately 73 km² and around 2011 census population of 15,550. The capital of Santorini is Fira and he currency of Santorini is the Euro and is used across all of the Greek islands.
Also there's Thirasia, a village on the nearby island with the same name visited by fewer tourists.

Now I've a brief of Santorini but what Is the specialization of this island ? 

If I will go to Santorini what I should know ? 

Climate , Visas , Transports 

• Climate 

July is the hottest month in Santorini with an average temperature of 26°C (79°F) and the coldest is January at 12°C (54°F) with the most daily sunshine hours at 14 in July. The wettest month is December with an average of 74.5mm of rain. The best month to swim in the sea is in August when the average sea temperature is 25°C (77°F).

• Visas

Santorini is an Greece Island so she has the same visa requirement and condition of Greece. Greece Is one of European country so if you have a schengen visa you can go to the Santorini without any condition (except your PASSPORT validity should have more than Six months of remaining validity ) If you're country are not a part from European country you should go to the embassy of Greece in your country.

• Transports

Santorini’s buses (KTEL) 

There is only one mode of public transportation in Santorini, the local bus system , the bus go to all villages of the island all the buses go to the main bus station at Fira . The tickets are issued from inside the bus, and the cost can vary from 2USD to 3USD per person per route.

Taxi 

Taxis will take you to most places on the island. If you are at Fira town, there is a taxi stand at the main square. If you are note, with just a phone call you can be picked up from any point. The taxi station phone number is +302286022555. The costs vary depending on the distances, from 4.50USD up to 29USD.

Car and motorbike

One of the most flexible ways to move around is by car. There are many car rental companies which will rent out a car on daily basis, manual or automatic. The cost for a car depending on the season can start from 29USD per day for low season and around 40USD in high season.
As flexible as a car, are the motorcycles and squats. Again, many companies rent both for a day, with
a bit lower prices than renting a car. Be careful with those, there are a lot of turns and bumpy roads!

Cable car

The special transport in Santorini is cable car, The cable car travels from Fira harbour up to Fira town and vice versa. The price of cable car is between 3.50USD and 7USD.

On foot 

Of course the best way to walk is on foot, you may have the chance to walk to many destinations! There are trails to follow where cars are not allowed, and the views will definitely reward you for the distance covered!