Ireland's currency is the Euro. Shops, restaurants etc won't accept any other currency, but you can use credit or debit cards everywhere. You can also withdraw Euro banknotes from ATMs using your debit or credit card.
Dublin's weather is changeable and unpredictable, so hope for the best but prepare for the worst! This is briefly what to expect: WINTER - typically cold and often wet, with temperatures ranging from 3-9C / 36-47F; SPRING - a little warmer, temperatures ranging from 4-14C / 39-57F; SUMMER - warmer but rarely ‘hot’, temperatures ranging 10-20C / 50-68F; AUTUMN - generally cloudy and gets progressively colder: average temp in September is 13C/55F but 7C/45F in November.
Ireland uses Type G electrical sockets and plugs [the ones with three rectangular pins in a triangular pattern] and operates on a 230V supply voltage and 50Hz. You'll need a travel adaptor - which lets any electrical appliance be plugged into an Irish electrical socket - but this doesn't convert the voltage, so you may also need a voltage converter. Check the 'rating plate' on your electrical appliance - some are 'dual voltage rated' and can operate within a voltage range, but others are 'single voltage rated' so need a converter.
