Definitions for "Moderate breeze"
Keywords:  beaufort, mph, knots, wind, scale
Beaufort force 4. Sustained wind speeds in the range of 11 to 16 knots. Small waves, becoming longer, fairly frequent white horses.
wind moving 13-18 knots; 4 on the Beaufort scale
In the Beaufort wind scale, a wind whose speed is from 11 to 16 knots (13 to 18mph).