June in Wanaka, New Zealand, brings average daily highs of 8°C and overnight lows of 3°C in the 2016–2025 historical record. Warm layers deserve space in the bag. Keep longer outdoor plans easy to adjust, and allow places to stop between walks so that a colder day does not determine the whole itinerary.
In the record, at least 1 mm of rain or snow falls on 10 of 30 days on average, a daily chance of 34%. Leave some freedom to swap an outdoor day with a sheltered one. There is no need to read the average as a fixed number of lost days; it says nothing about how long rain lasts on each occasion.
The calculated day length, sunrise to sunset, averages about 9 hours. Sunshine averages 5 hours a day. Use the daylight window to plan the length of excursions, and check local sunrise and sunset times for the dates of your stay. Sunshine is a separate measure, and those hours need not arrive in one uninterrupted stretch.
For nature trips or walks, keep the longest outings movable and check route conditions locally; a monthly climate average cannot establish whether a particular path is accessible. If food is a reason for the trip, leave time around meals rather than filling every gap with another journey. Check the places you choose for current opening hours.
July has an average daily high of 7°C, 1°C lower than June. Its historical rain-day chance is 38%, compared with 34% this month. If your dates are flexible, compare those trade-offs with the kind of days you want. Neither set of averages predicts the conditions of one particular holiday.