The study of Irish climatic conditions for 2021-60 indicates average monthly temperatures will increase by about 1.5 degrees centigrade above today's levels by mid-century.

The largest temperature increases will be in the southeast and east of Ireland with the greatest warming occurring in July.

Rainfall changes will be most significant in June and December.

June rainfall will drop by about 10 percent compared with the current climate, noticeably in the southern half of the country.

In December, rainfall will increase by about 10 percent in the southeast and by 25 percent in the northwest.

The study says there will be an increase in the frequency of intense storms over the Atlantic in the vicinity of Ireland and extra winter rainfall will raise the risk of flooding.

Launching the study, Environment Minister Dick Roche said the country must prepare for the future effects of climate change.

"Climate change is likely to have significant impacts on Irish society and on its economy," he said.

"For Ireland to adapt successfully to these changes, it is vital that we arm ourselves with detailed information on the nature of these impacts."

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