Yes, temperature can affect the performance and accuracy of your CGM (Continuous Glucose Monitor) sensor. Extreme heat or cold can interfere with the sensor’s ability to measure glucose levels accurately. Below, we’ll explore how different temperatures impact CGM performance and how to manage these effects.
1. How Heat Affects Your CGM Sensor
🌡️ High temperatures (e.g., hot weather, saunas, heated workouts) can:
Increase glucose readings due to increased blood flow to the skin.
Weaken the adhesive, making the sensor more likely to come loose.
Potentially damage the sensor, especially if exposed to prolonged heat.
💡 Tips to Prevent Heat-Related Issues:
✅ Avoid prolonged exposure to direct sunlight or high heat environments (e.g., saunas, hot tubs, steam rooms).
✅ If exercising in hot weather, consider applying an extra adhesive patch to keep the sensor secure.
✅ Store CGM sensors at room temperature as per the manufacturer’s guidelines.
2. How Cold Temperatures Affect Your CGM Sensor
❄️ Cold temperatures (e.g., winter weather, ice baths) can:
Slow down glucose readings, making them appear lower than expected.
Reduce blood circulation to the skin, affecting sensor accuracy.
Make the sensor adhesive less sticky, leading to detachment.
💡 Tips to Prevent Cold-Related Issues:
✅ If exposed to cold weather, wear layers to keep your sensor area warm.
✅ Avoid direct contact with ice or cold water, such as ice baths or prolonged exposure to freezing conditions.
✅ If your glucose readings appear unusually low after being in the cold, wait 15–30 minutes in a warmer environment before rechecking.
3. What to Do If Temperature Affects Your Sensor Accuracy
If you notice unexpected glucose fluctuations due to temperature exposure:
🔄 Give it time – Move to a moderate-temperature environment and allow the sensor to adjust.
📉 Check trends – Compare glucose patterns over time rather than relying on a single reading.
Final Thoughts
Temperature fluctuations can impact CGM accuracy, adhesive strength, and overall sensor performance. By keeping your sensor at a stable temperature, you can ensure more consistent and reliable glucose readings.
We do not recommend cryotherapy while wearing the sensor.