It usually is “summer” within Punta Cana and you'll enjoy the beach locations any time of this year.
The weather in Punta Cana is exotic and humid, the normal temperature level remains basically consistent throughout the year, about 28-29 degrees Celsius.
Otherwise for the storms that are developing in the Caribbean, Punta Cana would certainly be an excellent location for visiting and for enjoying the sunlight and beach in any sort of period. However, as nearly all visitor locations in the Caribbean, this beach location is also had an effect on by storms and storms. The storm period begins in very early June and finishes in late October. With August and September being the busiest months of strong winds. Practically, these months are the slow season and hotels offer great prices and rebates.
The best time to take a trip to Punta Cana outside the storm and hurricane period in the Caribbean. That is in the months from mid November to late April. In those months, the rainfalls are much less frequent and consequently there is much less moisture, being more pleasant to be outdoors. Moreover, the sunlight is not as strong as throughout the summer months, this makes it the optimal duration to be on the beach appreciating the sunlight.