The Whitsunday Seasons are really known as either dry or wet. The 'wet' season is from January-March, the windiest months are March-May, the driest months are August-October.
From mid-late September onwards the trade winds abate and the best cruising weather in the Whitsundays is between August to early November. At any time of the year though, you can almost always be assured of having enough wind for a pleasant sail. The temperature is pleasant almost any time of the year in the Whitsundays, with temperatures seldom above 30 degrees in summer nor below 18 degrees in winter. You can swim year-round. The trade winds are re-established after the summer monsoon in April-May, providing brisk sailing for the most part throughout the winter; the weather is generally more settled after June and the winds get progressively lighter after mid September.| Month | Max | Min | Month | MM | |
| January |
30.5 |
24.8 | January | 253 | |
| February | 30.2 | 24.9 | February | 278 | |
| March | 29.6 | 24.1 | March | 314 | |
| April | 28.1 | 22.7 | April | 150 | |
| May |
26.0 | 20.4 | May | 145 | |
| June | 23.4 | 17.1 | June | 62 | |
| July |
23.1 | 16.6 | July | 45 | |
| August | 24.3 | 17.4 | August | 24 | |
| September | 25.9 | 19.2 | September | 15 | |
| October | 27.5 | 21.3 | October | 40 | |
| November |
29.5 | 23.4 | November | 58 | |
| December | 30.4 | 24.5 | December | 114 | |
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