There is metered parking at the town pier. It is not operated by us, but the town. It’s somewhere around $1-$2 an hour. I suggest calling that office directly if you would like the exact price: (508) 295-3883
I parked across from onset beach in a parking lot up the hill. Public meter parking $1 per hour. 3 hours. Not bad.
Park at onset Beach lot. Its right there. Don't rember the cost but its reasonable
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