I surfed every day but three including a final Sunday morning session before departing the warm weather and waters of mainland Mex for home. Sayulita is on the north side of Punta de Mita and breaks best on a northwest swell, but it does see a south if the angle isn't too steep. It was surfable just about every day, if not in Sayulita, then on the Punta de Mita side.
The wave quality never went above 2.5 on a scale of 5 in my estimation. All the gringo locals I met said that this winter has not been a good one for northwest swells. The mild La Nina seems to have affected this region just like back home. The waves have a beach break quality, even though they break over reef-like rock piles. Last summer proved to be violently wet and during one particularly stormy patch several parts of the new back road that connects Sayulita with Punta de Mita, and the bridge on the main road into Sayulita were washed away. The locals say this extreme outflow moved boulders and sand away from usual locations, and changed the wave shape some. I'll have to take their word for it. From what I've read, the best season for surf is still summer, when the south swells blast up from the southern hemisphere.
There is a party, good-time atmosphere in the water at both breaks in Sayulita, and it's usually always crowded. Lots of beginners populate the spots, and since SUP is catching on everywhere, there are more than a fair share of folks out for the first time. Therefore I never surfed past 10 o'clock in the morning, preferring the somewhat less crowded dawn patrol. The only locals in Sayulita are the Mexicans, and there are many excellent Mexican surfers and pros who hail from Sayulita. They demand and deserve respect.
If you're looking for solitude, it isn't spelled Sayulita. But the vibe overall is good, so many people are just having fun in a warm and inviting place. We look forward to going back one of these days.