Alaska is a state of extremes, which makes it an interesting choice for a cruise, as long as you pick the best time of the year. Temperatures in Alaska can be as warm as the 70s during the day and then below freezing that night. If you are planning a cruise to Alaska, pick a time of year that has little rain, the most moderate temperatures and the most sunlight.
Late spring is often the best time to take an Alaskan cruise. The month of May is known to be the driest in Alaska so your chances of getting soaked are lessened if you travel at this time. Many people think of snow when they think of Alaska, but this enormous state can average over 155" of rain a year. May averages only 9" of rain in total.
Choose to travel during the late spring and early summer to enjoy the warmer temperatures of Alaska. While spring and summer days in Alaska range in the 60s and 70s, the winter can plummet to below freezing on a daily basis. Traveling during the late spring and early summer will enable you to enjoy more of Alaska's wild outdoors.
Late spring and early summer are also the best times for sightseeing in Alaska because of the long daylight hours. June 21 is usually the longest day of the year, summer solstice, which can provide almost 20 hours of daylight. If you choose to travel during the winter, the daylight is much shorter and your sightseeing and chances to take pictures will be limited.