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: