South Male Atoll
is an atoll being the nearest one to the south of Maldives International Airport. This is a great option, if you don't want to spend a lot of time or money for transfer. In general, its beaches
are pretty good by the Maldivian standards, though not the best in the country. Maafushi is the most famous island. It's notable as the first local island in the Maldives with international guesthouses. Shore and seabed: sand, stones. 
Budget travelers prefer Maafushi, as well as other local islands. Price fares and service can vary greatly from hotel to hotel, so it is best to read the latest reviews.
As for the islands resorts, it is worth mention inexpensive Fihalhohi and Biyadhoo. Or you may stay at Maafushi, and take daily tours to private islands. Please note, that all island resorts have a limit on the daily guests. So sometimes you won't be able to get anywhere. Find hotels in South Male Atoll
How to get there 
Fly to Male International Airport (MLE)
. Next get by the speedboat of your hotel (about US$150 per person per way).
To get to the local islands, it is best to take public government ferry # 311
or # 310
). These are ships being large enough. The service is good, while the ticket costs less than US$5 (paid in a local currency). Find flights to South Male Atoll
When to go 
The high season in Maldives is a dry period in the winter half of the year. However, the summer has also many great sunny days.
Water temperature, C
Wind speed, meter/sec