Hawaii Freezing Temperatures. The average daytime temperature in summer at sea level is 85°f (29.4°c), while that in winter is 78°f (25.6°c). The seasonal range of sea surface temperatures near hawaii is only about 6 degrees, from a low of 73 or 74 degrees between late february and march to a high near 80 degrees in late.
December 2021, a maximum temperature reached of only 70°f / +21°c, which is the coldest daily temperature in a tropical paradise since january 1979! I think we drop our thermostat several degrees below that at night. The average daytime summer temperature at sea level is 85°.