Regional Exress Airlines (REX Airlines) fly daily to Kingscote Airport from Adelaide Airport and can be booked on line.
Alternatively, book your car onto the Kangaroo Island Ferry, Sealink, departing the port of Cape Jervis, which is around a 1.5 hours drive south of Adelaide. (110 kms) and arrives at the port of Penneshaw on the Island.
It's normally less than 1.5 hours driving from Adelaide to the ferry terminal at Cape Jervis. Then a 45 minute crossing on the Sealink Ferry.
Flying takes about 30 minutes from Adelaide Airport through REX Airlines.
Kangaroo Island has four distinct seasons.
The winters between June and September are mild and wet, the summers are warm and dry.
Tempered by the ocean, particularly on the coastline, maximum temperatures in summer can reach 40 degrees Celsius with the average around 30 degrees.
Average temperatures in August range between 13 to 16 degrees and in February, the hottest month, between 20 and 40 degrees.
Between May and September the island receives 2/3 of its annual rainfall, varying from 450 mm in Kingscote to around 900 mm near Roo Lagoon on the top of the central plateau. The wettest month is July. 
Average Annual Temperature: 14 - 22 °C
Average January Temperature: 20 - 32 °C
Average July Temperature: 10 - 18 °C
Traveller Magazine - Dec 2010
Best beach for surfing?
The [local surfers] are going to kill me but D’Estrees Bay. On a howling north westerly has to be the best surf break in South Australia, if not the entire country.
Little Hanson Bay.
Emu Bay or the rock pool at Stokes Beach.
A nude frolic?
Western River Cove beach. There are loads of tall cliffs for shelter and a gentle swell rolls past.
Romantic bottle of bubbles?
A stroll on Pennigton Bay.
To rub shoulders with the wealthy?
Island Beach for sure: it’s millionaire’s row.
· Visitors must notify the Kangaroo Island Council if they are bringing a dog or cat to the island. This is per Council By-Laws 5 (dogs) and 6 (cats). To notify the council, simply call Customer Services on 8553 4500. Permission MUST ALSO BE OBTAINED if wanting to take a pet to one of our pet friendly properties. A bond may be applicable for your pet's holiday.
Kangaroo Island’s remoteness and isolation has created a special environment and many of Australia’s pests and diseases are not found here. Please help us keep it that way.
The island depends on primary industries and nature-based tourism as a major part of its economy and the introduction of just one new pest or disease could have devastating consequences.
There are some items that you CANNOT BRING TO KANGAROO ISLAND. Please dispose of any prohibited items before travelling to Kangaroo Island. Severe penalties apply.
· Bees, bee handling equipment and honey products (yes that means no jars of honey!). Kangaroo Island is a sanctuary to the only Ligurian bee population in the world. Help keep this species pure and disease free.
· Potatoes for consumption or planting. Unwashed or dirty potatoes may carry disease, which could devastate the island’s seed potato industry. Please leave them behind. Washed or brushed potatoes in new packaging are permitted for consumption only. For more information contact: Primary Industries and Resources SA 08 8553 4949 or 1300 666 010.
· Foxes, rabbits and declared weeds. The introduction of these pests would create an environmental disaster. For further information contact: Kangaroo Island Natural Resources Management Board on 08 8553 4300 or www.kinrm.sa.gov.au
· Residual plant material may be on your vehicle, camping equipment and hiking boots. Make sure they are free of soil before visiting Kangaroo Island.
· Aquatic pests are a major threat to marine environments. Please clean your boat and equipment carefully before leaving for Kangaroo Island.
· Vine cuttings from interstate must be inspected and certified. Help keep our vineyards disease free.
For further information on Biosecurity on Kangaroo Island, contact Primary Industries and Resources on 08 85532 4949 or the Hotline on 1300 666 010.