Some rapid, somewhere. We had blue skies much of the trip but it was often cool enough that you wanted to stay dry — the water is quite chilly (about 45°F, 7°C). In the summer, the air temperature is often around 100°F to 110°F (38°C to 43°C) during the day and it cools down to 90°F (32°C) at night...no thanks. If you go, spring is best and fall is good too.