Go to the following website:
http://weather.noaa.gov/weather/current/MDPC.html
It is from the the U.S. National Weather Service. Weather information sent from the Punta Cana airport is gathered there, providing a hourly breakdown of local conditions with the exception of some nightime hours. It provides the time, date, temperature in C/F, dew point, barometric pressure, and wind speed in mph.
The information will give you a handle on local conditions, especially the wind.
It is a given that you are from Toronto, why worry about the wind? Punta Cana's warm weather even with wind is a blessing compared to the cold artic expresses traveling over Toronto this time of year.
Welcome and regards,
PJT