This weekend will be a great one for beachcombing, with some of the lowest tides of the year.

The Seattle-area will see a -3.6 foot tide Friday at 11:39 a.m., a -3.5 foot tide Saturday at 12:26 p.m., and a -2.9 foot tide Sunday at 1:14 p.m.

Tacoma and Everett will see similar extreme low tides about the same time all weekend.

TIDE TABLES: Seattle | Tacoma | Everett (via NOAA)

The lowest tide of the year, -3.7 feet in Seattle and Tacoma, was last month.

Tides are measured relative to the mean sea level and are caused by the gravitational pull of the sun and the moon. They tend to have greater swings around the full and new moons, according to the National Oceanic and Atmospheric Administration.

If you skip the beach this weekend, very low tides return in August with a -2.8 foot tide in the Seattle-area August 10 and 11 around midday.