July- Sunrise 5:16 am; Sunset 9:45 pm

TEMPERATURE (degrees Celsius) jul

mean daily max. 18.9
mean daily min. 11.4
mean 15.1
absolute max. 27.6
absolute min. 4.8

RELATIVE HUMIDITY (%)

mean at 0900UTC 78
mean at 1500UTC 68

SUNSHINE (hours)

mean daily duration 5.4
greatest daily duration 15.4
mean no. of days with no sun 1

TIDAL

Full information on tides in Dublin Bay available here.

RAINFALL (mm)

mean monthly total 50
greatest daily total 34.8

WIND (knots)

mean monthly speed 8.1
max. gust 54

WEATHER

(mean no. of days with...)
thunder 0.7
fog 3.6

DUBLIN BAY WATER TEMP

Surface variation (degrees C) 8-15

What Sailing Gear to wear on Dublin Bay in July?
Given an air temperature on the bay between 12 and 24 degrees Celsius and a 12 degrees average surface water temperature, youth sailors on Dublin Bay in July would normally wear at least a wetsuit with a spray top.

See figures for Dublin Airport in the attached table. Note, out on the water on Dublin Bay is usually a couple of degrees cooler.

Useful links for weather information:
Irish Met service http://www.met.ie/
Dun Laoghaire Harbour company website site http://www.dlharbour.ie/ (see weather archive)
Wind Guru: http://www.windguru.com/