When tropical storms or hurricanes pass offshore, the Narragansett seawall is a popular spot to watch the waves.  If you are planning on doing this today (Sunday), it will be cooler with more clouds than sun.  Therefore, the light jacket or long sleeve shirt might be a good thing to take with you. There will be a chance of showers, especially during the morning.  However, most of the time it will not be raining. – Pete Mangione