The Palestinian health ministry said there were no immediate reports of injuries.
The rockets fell in open space near the Sha'ar Hanegev Regional Council, causing no casualties or damage.
Last March a rocket fired from Gaza struck an open area in Israeli territory, causing no injuries.
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Missiles and rockets are periodically fired at Israel, generally by hardline Islamist groups opposed to Hamas.
The fire came as Gaza is coping with a spiraling crisis since Israel has decreased the electricity it provides for the besieged Palestinian enclave after the Palestinian National Authority said it will pay only 70 percent of Gaza's electricity bill.
The Israeli military frequently bombs the Gaza Strip, with civilians being the main target of such attacks.
Israel holds Gaza's Hamas rulers responsible for all fire out of the seaside strip even rockets launched by any of the various militant groups challenging Hamas.