Why such sweating when walking even when it's cool?

Please do ask your doctor. Heavy sweating may be fine, but it could be that there's a negative reason for the sweating. It's definitely something that should be looked at. Then, if you get the all clear sign, keep walking.

I will add that some medications cause excessive sweating, so that's another thing to discuss with your doctor.

I hope all is well,
Carol

Not sure. You should check with your doctor to rule out anything serious. Have you always perspired or does this seem like something new? Consider taking a cold water with you and sipping often while you walk and see if that helps alleviate. Also, dampen a hand towel and keep in freezer over night. Drape around your neck while you exercise and see if it helps. Make sure you are hydrated and have a small snack like yogurt, peanut butter cracker or protein bar before you head out.

Let us know if these suggestions help.

My mother sweats a lot whenever she goes for a walk. For her it is because she has pain and the walking takes a lot of effort. If you are weak walking again takes a lot of effort and you will work up a sweat. You may also be feeling stress, which can add to the sweating. Sweating is annoying. My mother has to take a shower after her walk because she sweats so much. You are much younger than she is, though, so there is a good chance you'll stop perspiring so much as you get stronger on your feet.

Sweating is good, takes some load off the kidneys, cools you and lubricates the skin. Enjoy it for what it is, and then take a nice rinsing shower without soap to preserve the natural oils.

Maybe it's a good sign, that you are working hard and building up your strength. Do you get out of breath too? I always sweat, but usually after I stop exercising.

You should at least call your doctor's office to make sure it's not a sign of anything. Also be sure you are getting some natural potassium from a banana or something.