Nope. Weather service forecast updates typically not frequent enough to help much. Not all that accurate either. You basically can now get your horoscope with numbers and graphics on it. I've used satellite weather service on a bigger boat. Minimum utility-checked it once per day at most. Slightly more utility if you spend extended time in the islands where VHF marine weather channels not available. Even there someone usually broadcasts weather forecast on VHF on daily basis. Unless you're just gadget-happy, spend the money on something else.