A – Alaska is an extremely profitable destination compared to other parts of the world where ships can be based. For this reason, the season has been extended to include May and September. But it is true that weather in the Gulf of Alaska does vary from month-to-month and you could be subject to a rough ride and rain showers if you go on the edge of the season. We would suggest you consider July 1st through September 5th as prime, prime season. When it comes to Alaska, you always want to book by date rather than by price.