The weather is beautiful in the Grand Circle region and the water at Lake Powell is surprisingly warm for most of the season. It can
get pretty hot in July and August, so you may want to schedule your vacation for the milder months of May, June or September.
Springtime (March, April & May) can be very
windy and the water is still cold (you'll need a wetsuit for skiing). Spring weather is highly unpredictable and a cold snap in March is not
uncommon. The advantage of travelling this time of year is that availability of accommodations
and rentals are greater. June, July and August tend to be very hot, very crowded and availability
can be tough. September is the ideal month for travel to Lake Powell as the air temperature has
cooled off a bit, yet the water is still extremely warm and the crowds have dispersed somewhat. It
usually rains a great deal in September. Early October is surprisingly a great time to visit Lake
Powell as long as the weather holds. The lake is relatively empty and the water is usually still
warm enough for skiing or swimming -- even into the third week of the month. However, is seems
as if more and more visitors have discovered that travelling during the "shoulder season" is better than the summer months.
Average water temperatures fluctuate from a chilly 46 degrees F in February to an inviting 80
degrees F in August. Cold water months: January, 47; March, 52; December, 53; April 54;
November 62. Warmest water months: July and September, 76; June, 70; May, 64, October, 69. Don't let cold water scare you away, there's always fishing!
Water Temperatures are available through the National Park Service at 928-608-6404 -- Carl
Hayden Visitor Center keeps track.
Average high, average low and water temperatures in degrees farenheit are as follows: