Keeping an eye on the weather forecast on the Oregon Coast will keep you prepared for the day.
Can you sport a tank top and shorts or do you need to break out the umbrella? Honestly, either way, you're going to have a terrific time and find something to enjoy.
If it rains, check out some of the local tourist shops, go antiquing, look around for some great arts and crafts, hit the local aquarium.
If it's sunny and warm, DO EVERYTHING ELSE!;) The coastal city of Seaside has a ton of indoor things to do.
If it's less than stellar weather, as long as I have a warm place to stay, a pot of hot coffee, and either a television or a radio, it can do whatever it likes outside and I'm perfectly alright with it,
Either way, it's always nice to be a good little boy or girl scout and come prepared.
As you can see in the video below, on my visit to Port Orford on the southern beaches, it's not always sunny and bright at the Oregon coast. However, it is exactly what you make it.
You'll find that the locals tend to be oblivious to what it decides to do outside. Sun rays or large drops of rain do not bother them. It's all part of the package and they will be out in force, rain or shine, to serve you and make your visit enjoyable.
Keep in mind that the opportune times to find treasures along the sandy beaches are after a really good storm. Shells, agates, and Japanese glass floats are there for the taking. All you have to do is wait a storm out and then hit to beach to look. Once, we even had a enormous dock from Japan come for a visit!
Rather than listing forecasts for every city along the coast, I've pretty much split them up into Northern, Central and Southern sections. I hope that will work for you.
Oregon Coast Weather Forecasts