Here are some ways to avoid temperature-related MS flares:
Avoid extreme temperatures. They may worsen your MS symptoms.
Don’t exercise on hot and humid days, and never exercise to the point of fatigue.
Use air conditioning. If hot and humid conditions worsen your MS, try to stay in cool and dry areas as much as possible. A home air conditioner may be tax-deductible for some people with MS; talk to your doctor about this if you need. Some people use a cooling vest on very warm days.