The climate in Alaska during cruise season (May to September) is generally cool and mild, with temperatures ranging from the low 40s to mid 60s Fahrenheit (5-18 Celsius). The northern regions of Alaska can be quite chilly, with temperatures dropping to the low 30s Fahrenheit (0-2 Celsius) in the evening. The coastal areas tend to be more mild and comfortable, with temperatures in the mid to high 50s Fahrenheit (13-15 Celsius). Rain is common in Alaska, with the majority of the precipitation falling between May and September. The best time to cruise Alaska is in the summer months, when the days are long and the weather is mild.