When it comes to meso and micro scale features that affect the climate of Dublin Ireland, the Liffey River and Dublin harbor are really the only ones.  The Liffey River can affect Dublin because it can flood when there is excess precipitation.  Dublin Harbor can affect the climate by gathering water from the North Atlantic Current and keeps the water warmer by having it stay in the harbor.

TABLE   Graphs. These each are by 10 years from when the data began in 1881 to when it ended in 2009.  Y axis= degrees Fahrenheit  X axis= years 1- 1881 2- 1890  3- 1900  4- 1910  5-1920  6-1930  7-1940   8- 1950  9- 1960  10- 1970  11- 1980  12- 1990 13- 2000  14-2009

Everything seems to be in direct correlation except for a small spike in 1990 in the average high temperature.   The average temperature for both may have risen slightly since 1881.

Everything in January seems to be in direct correlation in the highs and lows in January but the average low in July does not spike as much as the high does in 1990.  The average temperature for both may have risen slightly since 1881.

I chose to compare Dublin Ireland to that of Surrey, England.  In general it is a very similar location and a very similar climate.  The average annual temperature of Dublin is lower by 6 to 7 degrees on the high end. The winter low in both Surrey and Dublin are about the same.  Dublin gets a little bit more rain but both locations get most rain in the winter months and the least in the summer months.  Everything else seems to be very similar and have little to no differences in any other major climate categories.

sources

http://www.ncdc.noaa.gov/cdo-web/cart?mr=t

http://weatherandclimateassignmentpost1.blogspot.com/2012/11/more-weather-info-on-charlwood-surrey.html