Island next week?

I was hoping to spend a few days on Ko Samet next week (Mon-Thu approx) on my way between Bangkok and Cambodia, but the weather forecasts don’t seem to be looking too great for the area. Are boats running? Is it worth spending time on an island or am I better off skipping that and trying again another time in non-rainy season? Or if Ko Samet isn’t any good, are there any other recommendations that wouldn’t take me too far off route?