Lake Weyba is a large, shallow saltwater lake located in Noosaville, within the Shire of Noosa, Queensland, approximately 4 kilometres south of Noosa Heads on the Sunshine Coast. It sits at the southern end of the Noosa Everglades system, which forms part of a UNESCO-designated Biosphere Reserve. The lake connects to a network of winding estuaries, including Eenie Creek and Keyser Creek, offering paddlers the option to explore beyond the main lake into sheltered channels.

The lake is notably shallow throughout much of its extent, making it well suited to kayaks, canoes, and paddleboards rather than larger motorised craft. Its calm, glassy water is appropriate for paddlers of all skill levels. Kite surfers also use the lake when wind conditions allow, so paddlers should be aware of this activity sharing the water. Some sections are deep enough for small motorised boats such as tinnies.

Vehicle access from Noosa is via Lake Weyba Drive; from the Sunshine Coast more broadly, Eumarella Road connects to Lake Weyba Drive. There is a single-lane concrete boat ramp on Lake Weyba Drive in Noosaville that provides access to the lake via the Noosa River, suited primarily to smaller craft. A small park at the southern end of the lake, also accessible via Lake Weyba Drive, includes a launch spot specifically for kayaking into the everglades. There are no hire facilities at the lake itself, though hire companies in the Noosa area offer kayaks, canoes, and paddleboards. Parking is available at the lake, and rubbish bins are provided, though there are no public toilets or BBQ facilities at the main access area.

Juvenile stingrays are commonly encountered in the shallows and can often be seen gliding beneath kayaks. Paddlers are advised to watch where they place their feet in shallow areas; the rays typically move away when noise is made. The surrounding ecosystem supports over 700 animal species and 1,300 plant species, including diverse birdlife, mangroves, eucalypts, and wildflowers. The lake is also home to fish species including whiting, flathead, bream, and trevally.

The area is designated as a council-approved on-leash dog zone along the lakeside. A small airstrip used by light aircraft is located near the southern park area.