Average ambient temperature in Cabo San Lucas in winter is 66F/19C, with water temperature around 73F/23C. Ambient temperature in summer is around 84F/29C, with water temperature around 78F/25C. Water in the Pacific is always 5-10C/10-15F cooler than in the Sea of Cortez. Rainy season lasts from May to September.
What to see
While scuba diving here divers can see tuna, barraducas, rays, mantas, parrotfish, wrasse, angelfish, stonefish, jacks, nudibranch, moray eels, whale sharks, and many others.