It is certainly the week to always have plenty of water and to keep in mind the signs of heatstroke.
Today's high is 26 and the rest of the week will see temperatures in the 30s.
It's recommended that you avoid working or exercising outside during this week's heatwave. If you can't avoid it, take regular breaks, drink lots of water, and avoid high-protein foods.
It's always important to apply sunscreen to your skin prior to being outside and if you plan on being outside for an extended period of time, re-apply the sunscreen as needed. And it's recommended that you wear loose-fitting clothes, a brimmed hat, and sunglasses.