For years, hydration advice in Ireland came with a shrug. Sure, drink your water, but it is hardly Spain out there, is it?
This summer has changed the talk. Ireland has already had record May warmth and a full heatwave in late June, with temperatures climbing above 30 degrees inland. As I write, another hot spell has arrived, with heat warnings in place across much of the country. Two heatwaves in one Irish summer is rare. The last time it happened was back in 1976.
So hydration is no longer something we can wave away as a worry for hotter countries. This year, it is an Irish issue, in Irish homes, right now.
Why Hydration Matters So Much in This Summer's Heat
Met Éireann calls it a heatwave when temperatures reach 25 degrees or more for five days in a row. That may sound modest next to Spain, but our bodies do not work on comparisons. They work on what they are used to.
And Irish bodies are used to soft, mild weather. When a hot spell arrives, we sweat more than we realise. Our homes hold the heat, because they are built to keep warmth in. Warm, muggy nights mean we keep losing fluid while we sleep. And most of us do not change our drinking habits when the weather turns, so it is easy to fall behind.
There is a second layer to this. Even on the cooler, cloudy days between hot spells, your body still loses water through sweat, breathing, and daily life. Ireland's long summer evenings pull us outdoors for walks, matches, and gardening late into the night. The loss is steady all summer long. The heat just speeds it up.
Signs of Poor Hydration: Are You Drinking Enough Water?
Mild dehydration rarely announces itself. It shows up as small complaints that are easy to blame on a busy day or a bad night's sleep in the heat. Common dehydration symptoms include:
- Headaches
- Tiredness or low energy
- A dry mouth
- Poor focus, or an afternoon fog
- Muscle cramps
- Urine that is darker than usual
Here is the part that surprises many people. Thirst is not always the first warning sign. It tends to come late, once your body is already running behind. Some people, older adults above all, may feel very little thirst at all. So it helps to watch for the quieter signs above, and to drink through the day rather than waiting for your body to ask.
Summer Hydration: How Much Water Should You Drink?
The general advice from the HSE is around 2 litres of fluid over the day for most adults, or roughly six to eight glasses. Water is the best choice, though milk, tea, and water rich foods all count.
In a summer like this one, treat that figure as a floor, not a ceiling. You need more when you are:
- Out in hot weather, even just sitting in the sun
- Exercising, even a light session
- Gardening on a warm afternoon
- Out walking or hiking
- Playing sports
- Working outdoors
- Pregnant or breastfeeding, when fluid needs are higher
A simple habit beats any formula. Drink small amounts often through the day, add a little more before and after any activity, and top up again on warm nights. Do not wait until you feel thirsty.
Who Needs to Pay Extra Attention to Hydration?
Hot weather does not affect everyone equally. Some people in the house need a closer eye than others.
Children lose fluid fast and forget to drink when they are busy playing. A filled bottle and a gentle reminder go a long way, above all on sports days and beach days.
Older adults often have a weaker sense of thirst. They can become dehydrated without ever feeling thirsty. A drink with each meal and snack is a good routine, and a phone call to check in during a hot spell is never wasted.
Active adults, from runners to weekend hurlers, lose more sweat than they think. Drinking before, during, and after activity beats one big glass at the end.
Anyone spending long spells in the sun should drink more than usual. A sea breeze can hide how much you are sweating, and this summer's warnings have come with real heat behind them.
And one member of the family is easy to forget. Your pets need extra water in hot weather too. Keep bowls full and in the shade, and bring water on longer walks.
Simple Hydration Tips You Can Use
Healthy hydration is built on small habits, not willpower. A few that work, in any weather:
- Start your morning with a glass of water, before your tea or coffee
- Carry a reusable bottle when you leave the house
- Keep water visible on your desk, because seeing it prompts you to drink
- Add lemon, mint, or a few berries if plain water bores you
- Drink before you feel thirsty, a little and often
- Keep a jug of chilled water in the fridge, a small luxury on a hot day
None of these takes effort once they become routine. Together they can move you from barely one litre a day to a healthy intake without counting a single glass.
Does Water Quality Affect Your Hydration?
There is one more piece of the puzzle, and it is the one hydration advice tends to skip. People drink more water when they enjoy it.
If your tap water has a strong chlorine taste or smell, you may reach for it less often without noticing. This is common across Ireland, where mains water is treated with chlorine before it reaches your home. Many families turn to bottled water instead, and in a hot summer the packs vanish fast. It is costly, heavy to carry home, and creates a steady stream of plastic waste.
Filtered drinking water offers a simpler path. A home system, such as a reverse osmosis unit fitted under the kitchen sink, removes the chlorine taste and smell along with a wide range of other unwanted extras. The result is fresh, clean tasting water straight from the tap, ready whenever anyone wants a drink.
When the water at home tastes good and is always there, drinking enough stops being a chore. Children fill their bottles without a fuss. The fridge jug is emptied and refilled all day. In a summer like this one, that steady supply of cold, clean water earns its place in the house.
For families thinking about this route, the ArkkZ Water Filtration System from Renewell Water is a reverse osmosis system that delivers purified water from its own kitchen tap. Installation is included across Ireland and Northern Ireland. You can learn more here: ArkkZ Water Filtration System.
Make Hydration a Healthy Habit
This summer has given Ireland a taste of real heat, and it may not be the last time. Whether the next few weeks bring more warnings or a return to soft grey skies, the habit is worth keeping. Hydration is one of the simplest ways to support your health, and it costs almost nothing.
Start tomorrow with a glass of water. Put a bottle by the door and a jug in the fridge. Add watermelon or strawberries to the shopping list. Keep an eye on the children, the grandparents, and the dog.
Small daily habits make a big difference. And having clean, refreshing water ready at home makes staying hydrated easier for the whole family, through this heatwave and every summer after it.
This article is for general information only and is not medical advice. If you have concerns about your health, please speak to your GP.
