Like much of the Caribbean, the Turks & Caicos have become a year-round destination. December to April is the high season, and temperatures range from the mid-70s to the mid-80sF. June to November (especially August and October) is much hotter with temperatures ranging from the 80s to over 100F. Hurricane season is June to October, but there's no cause for panic: satellite forecasts give enough warning that precautions can be taken.
Note: flight, boat, train and bus timetables change constantly, and airlines come and go, so please do not rely solely on this information for your travel planning. Check with relevant companies, or a flight search engine like Skyscanner, first.
The main airports are Providenciales Airport and Grand Turk International Airport.
From the UK:
Providenciales Airport is served by British Airways from London.
From the USA:
American Airlines flies to Providenciales from Miami, New York, Boston and Dallas, Delta flies from Atlanta, US Airways flies from Philadelphia, and Air Canada has services from Toronto.
From the Airport:
Providenciales Airport (PLS) is about an hour's speedboat ride from Parrot Cay. Most hotels will meet you at the airport.