Swimmers and bathers have been reminded of a number of key points to remember when taking to the water over the bank holiday weekend.
The Irish Coast Guard, the RNLI and Water Safety Ireland have issued a joint appeal as temperatures are set to reach 24C in some places this weekend.
Speaking on RTÉ's Brendan O'Connor programme, Water Safety Officer with Cork County Council Caroline Casey warned people that the water remains cold despite the weather.
She said: "Swim where there are lifeguards. You'll know they are on duty because you will see the red-over-yellow flags flying on the beach.
"The water is still quite cold, especially if you're not swimming on a regular basis.
"So in this type of weather our body temperatures are warmer and if we go very quickly into the water, you could get cold water shock."
Ms Casey said it is about acclimatising yourself to the water, slowly entering the water.
She said a good tip is to put some water into your hands and put it over the back of your neck about ten times before you enter the water.
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The officer also said it is important for swimmers to become familiar with the area they are swimming in.
"Know what you are getting into. Know the area where you are going swimming. Know your ability and stay within your depth and swim within your depth.
"And above all, if you have children with you at the beach, please make sure and supervise them. And supervise means holding their hands, be it on the sand and in the water," she said.
Ms Casey said the full moon tonight may lead to stronger rip currents on the coast.
She also said the low tide can be lower when there is a full moon, which could lead to people getting trapped on beaches.
"There is an attraction if there is more sand there for people to go walking, and it is lovely, but you need to know the tides of the beach you are walking on.
"And if there is a danger of being cut off on rocks or on sand banks when the tide is coming in to hide tides, so just be aware of that this weekend," Ms Casey said.
She also warned people who are paddleboarding to make sure they wear a life jacket and to have a method of communication on them, let someone know what time they are going out and what time they will be back.
Ms Casey also highlighted the importance of not swimming against the current.
"If you do fall into the water or if you are caught in a current of some sort, it is always better not to swim against the current.
"Turn on to your back, your arms and legs, you're moving them gently, you're lying on your back, giving yourself thinking time so you can gather your thoughts and then you're calling for help," she said.
Temperatures to reach mid-20s
Met Éireann meteorologist Siobhán Ryan said today and tomorrow "remains best in the west" when it comes to high temperatures.
Speaking on the same programme, she said: "Temperatures over the west and southwest are getting up to the mid-20s in some parts."
Ms Ryan said that temperatures in Dublin's Phoenix Park yesterday "only got up to 15.6C".
She said the sun has shone through nationwide over the last number of days and even though there is an easterly breeze, it is not very noticeable.
Ms Ryan said that by Monday temperatures in the east will begin to rise, but there may be a slight change in the weather later next week.
"We might get some rain belts moving up," she said.
"But actually, where last week, temperatures were around two or three degrees above average generally speaking, obviously not along the east coast, actually for the week ahead, temperatures are going to be three or four degrees above average.
"So actually, it's not only going to be warm, it may turn hot later this week so it's a good news weather story for most of us."
