Hydration in the Local Climate: How Much and What to Drink in Wollongong

This June, Wollongong residents have faced record-breaking heat instead of the usual chill, with Sydney logging its warmest June since 1859 and coastal New South Wales feeling the effects. With locals flocking to city rock pools or heading up Mount Keira for a morning hike, the message from local wellness groups is clear: hydration needs close attention now more than ever.

Rising Temperatures and Old Habits

The warmer weather isn’t just a talking point for surfers and cyclists. According to Illawarra Shoalhaven Local Health District’s community advisory bulletin, people often underestimate their fluid needs during winter. “We think about hydration in summer,” their June 30th notice warns, “but heavy activity in unexpectedly warm winter weather can dehydrate you before you realise.” Rock pool group Swimmers of North Wollongong and cycling club Wollongong Freewheelers report more members turning up with reusable water bottles—and more pausing mid-workout to hydrate.

At Stuart Park, a group fitness instructor who runs sessions for the North Wollongong Fitness Collective said participation in dawn bootcamps has stayed strong, but warned dehydration can creep up quickly. The city council recently topped up filtered water stations on Cliff Road and in West Wollongong’s Beaton Park to encourage hydration on the go. Meanwhile, part of the new wellness walk at Nan Tien Temple includes a shaded water break and a hydration reminder sign, added in April after several visitors reported headaches or light-headedness after their walk.

Facts, Figures and Local Recommendations

While the old guideline of “eight glasses a day” remains a useful starting place, Wollongong practitioners say it’s too simple for days when temperatures spike above 23°C in midwinter, as they have this year. According to the Bureau of Meteorology, Wollongong experienced six days over 23°C in June—double the average since 2000. Local supermarkets are seeing a 14% uptick in sales of electrolyte drinks compared to June 2025, according to Coles Crown Street’s store manager.

The Illawarra Shoalhaven Health District advises adults to drink 2 to 2.7 litres daily as a baseline, depending on body size and activity levels. But on hot or active days—like hiking the Sublime Point Track or running along Corrimal Beach—add at least 500 mL per hour of strenuous activity. Water remains the gold standard, but health educators recommend mixing in low-sugar electrolyte tabs if sweating heavily. Prices at local chemists for a pack of Hydralyte start at $11.95. “We see extra lines at the water refill station near Flagstaff Hill when the hot wind blows in,” said a staffer at Diggies Café, where chilled still and sparkling water are free for customers with a reusable flask.

Next Steps and Everyday Hydration Habits

Local organisers hope the region’s new hydration signage and updated advice spill over into households. Pack a bottle for hikes along the Illawarra Escarpment trails, and don’t wait until you’re thirsty to drink. Avoid overreliance on sweetened sports drinks or energy drinks—plain water or natural coconut water from the Keiraville IGA (often on special at $3 per litre) offer better all-day hydration.

Ultimately, as weather patterns change and more residents swap indoor routines for outdoor exercise, building simple but consistent hydration habits will keep Wollongong active, alert and feeling well through the so-called "off-season" heatwaves. When in doubt, check urine colour (pale is best), carry a flask, and use any of Wollongong City Council's 22 public water refill points. It’s a simple step that makes braving the region’s changing climate far safer—and a good deal more enjoyable.