I've been diving in Puerto Madryn last August.
Now December, we are entering summer time and temperatures are rising, buy water is still cold enough to need a dry suit for a 2 dive day several days. Water will not be higher that 14 degrees.
I've been diving with Abramar Buceo (
ABRAMAR buceo - Puerto Madryn - Patagonia Argentina). They are in the waterfront, near the downtown.
The dive sites could be the following, at least what I'm aware of :
Folias wreck : is an old fishing ship that can be seen from the beach south of the city. It can be dived on high tide.
Albatros wreck : is a fishing ship sunk as an artificial reef. 22 m depth on low tide. The cargo hold can be penetrated.
Miralles wreck : is a war ship sunk as an artificial reef. 27 m depth.
Loberia Punta Loma : to dive with sea lions. shallow dive, lots of sea lions. Also available for snorkeling with sea lions.
Parque Piedras : it's a diving place used for photo contests. Nice little reef.
There are several other diving sites with small reefs.
Fishes can only be seen in the wrecks, as they are protected from the sea lions.
Prices are around US$ 80 per 2 tank day. If the excursion also involves diving with sea lions, the prices can rise up to US$ 170 per 2 tank day (as the dive operator has to pay several municipal taxes).
Visibility is pretty variable, though you cannot expect more that 6 meters is the very best day.
The picture in my avatar was taken in Punta Loma diving with sea lions last August.
If you cannot speak Spanish, it could be hard for you to understand the operators.