Last updated July 2026
Lake Wiritoa is a coastal dune lake on the south-western edge of Whanganui, set within five hectares of park-like grounds. It offers one of the district’s reliable freshwater swimming spots with consistently low bacteria levels under normal conditions. Horizons Regional Council monitors the lake weekly during the summer season. The lake also supports water skiing, boating, kayaking and fishing.
Practical Information
| Location | Kaitoke Road, south-west Whanganui (end of Kaitoke Road off State Highway 3) |
| Entry | Free |
| Swimming | Generally suitable; monitored weekly during summer by Horizons Regional Council |
| Blue-green algae | Check current status before swimming as blooms can occur |
| Activities | Swimming, water skiing, boating, kayaking, canoeing, fishing |
| Facilities | Toilets at beach area, picnic areas, boat ramp, car parking |
| Water quality | LAWA — Lake Wiritoa |
About Lake Wiritoa
Lake Wiritoa is a natural coastal dune lake formed behind the sandhills along Whanganui’s south-western coast. The lake lies within a reserve featuring grassed areas, mature vegetation and picnic spots that remain pleasant outside the main swimming season.
Water quality at the lake is generally suitable for swimming. Horizons Regional Council monitors it weekly from early November to early April for E. coli bacteria and cyanobacteria. Bacteria levels remain very low under normal conditions, making the lake safe for swimming except when blue-green algae blooms are present. Always check the latest LAWA results or Horizons alerts before entering the water, particularly after warm spells or heavy rain.
The setting supports a variety of water-based recreation. Motorised boating and water skiing take place alongside non-motorised options such as kayaking and canoeing. Fishing is also popular. Toilets are available at the beach area on Kaitoke Road.
Recreational Activities
Swimming is a primary draw, with the lake providing calm freshwater conditions suitable for families. Water skiing and jet-skiing are permitted, and the lake has a boat ramp for easy access. Kayaking and canoeing offer quieter exploration of the shoreline. Fishing targets species such as perch, subject to current regulations from Fish and Game New Zealand.
What Visitors Often Say
A lovely local lake with calm, clean water and a nice grassy area for setting up for the day. It works well for young children who want to swim without ocean surf.
A real gem for water skiing and one of the better spots in the region. The picnic areas are pleasant and the site is free, making it ideal for a family day out.
Where to Learn More
LAWA — Lake Wiritoa Swim Site: Weekly water quality results and current swim suitability status.
Horizons Regional Council — Lake Wiritoa: Monitoring programme details and safety information.
Whanganui District Council — Lake Wiritoa: Facilities, location and park information.
Frequently Asked Questions
Is Lake Wiritoa safe for swimming?
Generally yes. The lake has very low bacteria levels and is monitored weekly during the summer season. The main exception is blue-green algae blooms, which can make the water unsafe. Always check the LAWA website for the current status before swimming.
What is blue-green algae and why does it matter?
Blue-green algae (cyanobacteria) blooms can occur in warm, still conditions. The toxins they produce are harmful to people and animals. Do not swim in or drink the water when a bloom is present. Horizons Regional Council posts alerts when blooms are detected.
Can I water ski at Lake Wiritoa?
Yes. Water skiing and motorised boating operate on the lake. Check with Whanganui District Council for any current rules around boat use and speed zones.
Is there fishing at Lake Wiritoa?
Yes. The lake supports fishing. Check current fishing regulations with Fish and Game New Zealand.
What facilities are at Lake Wiritoa?
Toilets are available at the beach area. The grounds include grassed picnic areas and a boat ramp. There is no café or equipment hire on site.
How do I get to Lake Wiritoa?
The lake is reached via Kaitoke Road, a right turn off State Highway 3 approximately 3 km south of Whanganui city centre.
Are dogs allowed at Lake Wiritoa?
Dogs are permitted in the beach and boat ramp area under Whanganui District Council dog access rules.
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