How can I reduce my room humidity?

I finally got a hygrometer and checked the humidity of my grow room. Now I wish I hadn't (lol). It's 82% and rising along with the room temp. (74 deg.) My understanding is during flowering, humidity shouldn't be any higher than 40% and even lower during the last week. My girls are 3 weeks into flowering now, no signs of mold, mildew etc. at this point but the bud growth is thick and I can't see deeply into it. I have 2 rotating fans on the plants going 24/7. The room is 12'x13'x8'. Also I live around 1 1/2 mi. from the ocean, and less than a mile from a river. So the normal outside humidity is high (in fact it is 89% right now). How can I get this down? I don't think one of those little closet dehumidifiers will do the trick. Thanks in advance for the help. HH

A fan or blower should help with the humidity problems

Thanks, but, sorry I forgot to put in that I have 2 rotating fans going 24/7. Appreciate the input. I'll edit my post. HH

try using a an inline fan or a squirel cage fan, drawing air in from the outside, not air within the room.

how are you ventilating the room? if you're just blowing air around inside the grow room, that will not help humidity. you have to take air in from a room other than your grow room and expel it into another room. the faster the air within the grow room is exchanged, the less heat and humidity will have a chance to build up.

yeah what johnny said

Thanks guys! The humidity in the room was lower all day than the humidity outside. I do have a window open during the day to help with heat. By 8pm last night (lights off time starts) humidity was down to 76%. Outside humidity was 84%. Right now (6:40am) outside humidity is 95%. I think I need something in the room to soak this up? Anymore ideas?? Thanks again, HH

aside from a dehumidifier, you will need to ventilate. if you don't do one or the other, there is a pretty good chance with your humidity being that high that you will suffer from bud rot. which would suck.

TY, TY. Guess I'll have to check into a dehumidifier. As I noted I'm venting into outside air which is actually higher than inside. Right now 75% outside 73% inside. lol what a county! HH

You need to get yourself a dehumidifier. The humidity should be between 40% and 50%.

I know an old post...but 95%???? is there water dripping from your walls?