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Help with high indoor humidity

Hi there - I recently bought a house in the SF Bay Area and have been experiencing high indoor humidity that ranges from 70-74% in the mornings to 63-70% in the afternoon, and it creeps back up to 70-74% at night. We have some condensation on a few of the windows.

We think it's probably moisture in the crawlspace and we've heard of several solutions but want to get an understanding of the most efficient while cost-effective solution for us. Part of the challenge is - we live in the Bay Area so it's usually dry most of the year. It's only been the past few months with El Nino that it has rained more. It might be why the previous homeowners didn't have this much of an issue with the indoor humidity. So meaning, is this problem that will naturally get better over the next few months? If so, what would be a good stop-gap solution to put in place?

A couple things to know about our house:
- The crawl space doesn't have really good ventilation. There is a lot of dirt to the point where some places under the house isn't really accessible.
- Part of the property slopes toward the house. We had a 2nd sump pump installed in this area. This area is under our hallway bathroom, that's right next to the kitchen. Our 2 kitchen windows have condensation.

We're getting some people to come out and take a look at the property but wanted to see if the forum had any ideas as well. Thanks!

Re: Help with high indoor humidity

As an immediate solution try a dehumidifier and see if it helps.

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