First year I kept an eye on oil and water temps with the phone app Torque but after some trackdays where the temps never ran away I stopped and has since then relied only on the built in temp meter in the car instrument cluster (non LCI). This year I've started including the temps in the logs/videos but it's stil cold weather. Tuesday it was 10-15 degrees celsius, 15 minute stints at really full attack on some stints and oil kept under 120 degrees celsius. Not very useful information, we'll see later in the year how it works. But surely there are many on this forum that have pushed their cars hard in hot weather and know what to expect?
Here are two videos from Tuesday, at the Sviestad track outside Linköping: