17/08/2026
Many people notice their blood glucose behaves differently during hot weather.
There are a few reasons why:
๐ง Dehydration can make blood glucose readings appear higher because glucose becomes more concentrated in the bloodstream.
๐โโ๏ธ Summer often means more walking, gardening, holidays and outdoor activity. Increased activity can improve insulin sensitivity and help lower glucose levels.
๐ If you use insulin, hot weather may increase insulin absorption, meaning insulin can work faster than usual and potentially increase the risk of hypos.
๐ก๏ธ Heat can also affect diabetes equipment. Insulin that becomes too warm may lose effectiveness, leading to unexpectedly higher readings.
Top tips for managing your blood glucose in warmer weather:
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Stay well hydrated
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Check glucose levels more frequently during heatwaves
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Be prepared for extra activity
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Keep insulin and diabetes supplies cool
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Plan ahead when travelling
The weather might change, but understanding the reasons behind your glucose patterns can help you stay one step ahead.