South Island (Queenstown) has no ideal window. No month clears the bar for comfortable travel outright, but Jan–Apr comes closest — rated fair rather than too hot, too cold or too wet.
Alpine; four distinct seasons
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 16.0 | 61 | 54% | Fair |
| February | 16.0 | 61 | 52% | Fair |
| March | 13.7 | 57 | 51% | Fair |
| April | 10.1 | 50 | 57% | Fair |
| May | 6.6 | 44 | 65% | Too wet |
| June | 3.3 | 38 | 63% | Too cold |
| July | 2.7 | 37 | 58% | Too cold |
| August | 4.4 | 40 | 62% | Too cold |
| September | 7.2 | 45 | 61% | Too wet |
| October | 9.5 | 49 | 64% | Too wet |
| November | 11.8 | 53 | 60% | Too wet |
| December | 14.3 | 58 | 61% | Too wet |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
March is the driest month, with rain on 51% of days and daytime highs near 13.7°C (57°F). May is the wettest, at 65%. The warmest month is January at 16.0°C (61°F); the coolest is July at 2.7°C (37°F). The record rules out too wet in May, Sep–Dec; too cold in Jun–Aug.