Short answer: In New Zealand, the national whitebaiting season runs from 1 September to 30 October inclusive. If you’re on the Chatham Islands, the season runs from 1 December to the last day of February inclusive. Details and regional notes

• National season: 1 September to 30 October inclusive each year. This applies to most of the main islands. During daylight saving, fishing times are typically 5:00–8:00 pm (or 6:00–9:00 pm depending on local regulations). Always confirm local timings with the Department of Conservation or your regional council before you fish. [season dates: national] [timing guidelines: DOC]
• West Coast of the South Island: Regulation differences can apply; verify local bylaws via the West Coast regional authorities or DOC. [regional note] [documentation]
• Chatham Islands: Separate season from 1 December to the last day of February inclusive. [Chatham Islands]

Practical tips

• Always check the latest official guidance before you go, as seasons or rules can be updated and may vary by region. [official guidance]
• Adhere to daylight saving changes in your area to ensure you’re fishing within permitted hours. [timing guidance]
• Follow safety, environmental, and gear regulations to avoid penalties. [regulations]

If you’d like, I can pull the most up-to-date official pages for your exact location (e.g., your district or river) and confirm current seasonal dates and permissible hours.