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Wanaka weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Wanaka?
For a warm holiday, the best week has been 11–17 February (Weather Index 82). Favourable start dates for a 7-day trip run from 5 February to 16 February. January and February are warmest (22°C), March is driest and January, November and December have the most sun.
- Warmest
- January and February 22°C
- Coolest
- July 7°C
- Driest
- March 29% rain-day chance
- Wettest
- December 47% rain-day chance
- Sunniest
- January, November and December 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Wanaka
Wanaka historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 22.2 | 12.4 | 35.5 | 11.0 | 93.8 | 11.8 |
| February | 22.0 | 12.1 | 33.2 | 9.3 | 97.9 | 11.4 |
| March | 19.8 | 10.5 | 29.4 | 9.1 | 86.8 | 9.7 |
| April | 16.2 | 7.6 | 34.7 | 10.4 | 95.0 | 8.0 |
| May | 12.6 | 5.1 | 38.4 | 11.9 | 98.9 | 6.2 |
| June | 8.5 | 2.5 | 34.3 | 10.3 | 69.3 | 5.2 |
| July | 7.4 | 1.4 | 38.4 | 11.9 | 117.1 | 5.0 |
| August | 9.4 | 2.4 | 38.1 | 11.8 | 74.9 | 7.1 |
| September | 12.2 | 3.8 | 45.3 | 13.6 | 146.2 | 9.0 |
| October | 14.9 | 6.2 | 44.5 | 13.8 | 136.3 | 10.1 |
| November | 18.2 | 8.9 | 44.3 | 13.3 | 109.6 | 11.5 |
| December | 20.3 | 11.2 | 47.1 | 14.6 | 113.5 | 12.1 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.