When is it Too Hot to Hike?

“Safe” hiking temperatures can vary depending on individual tolerance, acclimatization, health/ fitness and preparedness. However, the following general guidelines can help determine the risk of the hiking conditions:

• Below 80°F: This range is typically considered safe for most hikers, provided they are adequately prepared with the ten essentials (see below). 
• 80°F – 90°F: Caution is advised. Hikers should take extra precautions to stay hydrated, rest frequently in the shade, and monitor for signs of heat-related illnesses.
• 90°F – 100°F: High risk. It’s crucial to take significant precautions such as carrying extra water, avoiding midday heat, wearing sun-protective clothing, and recognizing the early signs of heat exhaustion and heat stroke.
• Above 100°F: Extremely dangerous. Hiking in these temperatures can quickly lead to heat-related illnesses, or death, even for experienced hikers.

See: https://cvhikingclub.net/hydration-basics/

See: https://cvhikingclub.net/heat-illnesses/

(Source, Anza Borrego Foundation, 6-2024)

The information provided on this CVHC page is for general informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.