CreakingCrank

I live in a desert and have ridden in 113F. The danger of riding in dry heat is you don't know you're sweating until you stop. The ultra-dry heat coupled with the "breeze" from moving evaporates the sweat as soon as it reaches the skin's surface. You can get dehydrated quickly without realizing it.

In the end, same answer: "stay over hydrated"

John_V 

Living in Florida, there's no such thing as a day that's "too hot to ride." It's currently 83º right now and this is the middle of February.

ZIPP2001

I prefer the heat and have always enjoyed our hot humid New England days in summer.

reppans

Invested in a phase change cooling vest (uses 60F 'ice' packets) for motorcycling in hot weather. Works good mowing the lawn in hot weather, may need to try it out bicycling.

FlMTNdude

Here in Florida it is almost always “too hot” (over 65). We had some days in the 50s this winter (highs) which I was riding around in short sleeves and shorts while everyone else I saw look like they just came in from Canada. I try to keep it under 75 degrees. Not always feasible, but after 3 years here I still would fair better in the high desert/mountain weather which I loved.

Machka 

It was over 40C in the sun on the road on our on-bike thermometres during our 200K on Saturday ... but the recorded shade temperature was only 33C.

And today, our on-bike thermometres registered 37C on the trail, while the shade temperature was 32C.

It wasn't the most comfortable, but we made it.

OldsCOOL

We really dont get hot but if it hits 95 I’ll do a shorter hill ride to stay in shape. Winter is just too brutal for me to not ride because it is too hot.

andcarrotrope

I work outside so riding in the 90,s or a 100 is no problem.

sch

my limit is 90-92F. Would never start a ride at that level, but sometimes end one in that range on rides of 50-70 miles.
Hydration is a real problem at temps above 85F, you lose water faster than you can replace it. I keep track of my
weight pre/post ride to assess this and routinely see intakes of 100-140 oz of fluid but still see 50-70 oz weight
drop on a ride on rides of 60+ miles above 85F. Main reason I stopped doing centuries in the June-August
time frame. I am aware of acclimation but don't really plan to acclimate at my age (74+). Ride starts @ 6-7am
and distances < 60-70 miles gets me home before the 90F level these days in the summer.

I also became concerned at the skin changes from sun exposure on my arms 4-5 yrs ago after 20 yrs of bare arm
riding (with sunscreen always) and started riding with sunblock arm covers. I use a modern doorag on my fairly
bare scalp for same reason for >10 yrs after noticing tiger stripes on my head from vents in the helmet.
If I have to ride in pm in summer I will start after 4 when sun angle means tree shadows help leafy roads.
I also learned to hate the feeling of heat radiating UP at me from hot road surfaces at 2pm.

SJM205

I'm so looking forward to finding my limit this summer. I don't take to the cold as well as I used to. The heat definitely loosens up the knees and shoulders.

one4smoke

At 56, I can't handle the heat as well anymore. If I ride in temps over 87º it's short rides only. I try to ride either very early or very late in the summer.

LuckySailor

In 2015, I was part of a group of 13 that rode across Canada. Early in the tour in BC, we were riding up the Coquihalla Highway and it was 104. My bike computer registered 130. I drank 14 quarts of water that day and didn’t pee a drop until just before retiring that night.

bogydave

That shows how important it is
to hydrate.

Similar for me, I think I drink lots ,
but it’s always a long time after a ride
before I need to pee.

Had a “Goldilocks “ ride yesterday
20 miles @ 82°,
felt perfect
Drank 2 bottles during ride & a beer when got home,
couple hours before had to go.

Maybe I need more after ride beer