What to Wear Running in 85°F Weather
85°F is 29°C. Everything below applies to either reading — the kit does not care which scale you think in.
Warm and comfortable. Light, breathable layers and sun protection are all you need.
What to Wear
Running kit for 85°F
- ●Light tee or singlet
- ●shorts
- ●thin socks
- ●SPF 30-50
Women's variation
- ●Light tee or tank
- ●shorts
- ●thin socks
- ●SPF 30-50
What 85°F actually feels like once you are moving
At 85°F running is heat-limited rather than cold-limited, and the number that decides the outing is not on most forecasts. A runner produces roughly three times a walker's metabolic heat and sheds it almost entirely by evaporating sweat — so humidity, not temperature, sets the ceiling. Above about 65°F of dewpoint the sweat stops evaporating efficiently and your pace at a given effort falls away regardless of fitness. At 6 mph you make only 6 mph of airflow to help, which is far less than a cyclist has at the same temperature.
Dress for the finish, not the doorstep
Your own engine is worth about 18°F once you are going. The practical rule is to dress for 103°F standing still rather than the 85°F on the forecast. Running gets the largest correction of the three because it makes the most heat, and runners still under-apply it. If you are comfortable on the doorstep at 85°F you are dressed for a walk, and you will be carrying a soaked layer by the second mile.
Not sure of the temperature? Enter your city in the free tool for live conditions, a Ride Score, and rain- and wind-adjusted advice.
Open the live toolThe first ten minutes
Start slower than feels right. At 85°F you reach working temperature within a few minutes and have nothing left to shed, so the only adjustment available to you after that is pace — and it is much easier to give up thirty seconds a mile at the start than four minutes at the end.
What changes at 85°F when it is wet, windy or bright
Rain
Rain at 85°F runs like roughly 75°F dry, but it troubles a runner less than it troubles anyone else here: you are making enough heat to stay ahead of it, and you are out for less time than a walker. A light shell helps; a heavy one will have you wetter from the inside than the rain would have made you.
Wind
A 15 mph headwind at 85°F adds meaningfully to the 6 mph you make yourself, and it lands hardest on an out-and-back — the half you run into it will feel colder and slower than the half with it behind. A thin windproof front is the right answer; run out into the wind and back with it where the route lets you choose.
Sun
Direct sun at 85°F can add the better part of 10°F to what you feel, and UV does not track temperature — clear, cool days burn people who never gave it a thought. Sunscreen on whatever the kit leaves out, and something over the eyes.
The mistake people make at 85°F
At 85°F the mistake is holding pace. Runners treat heat as a clothing problem when it is an effort problem: your kit is already close to minimal, and the thing that ruins the run is refusing to run slower. Go by effort, not by watch, and move the session earlier if the day allows.
Hands, feet and ears
Nothing needs covering for warmth at 85°F. A cap and eye cover are worth having for sun and sweat; everything else is a hindrance.
Frequently asked
What should I wear running in 85°F?
For 85°F, wear: Light tee or singlet, shorts, thin socks, SPF 30-50. Dress for about 103°F rather than 85°F, because your own effort is worth roughly 18 degrees once you are moving.
Does 85°F feel colder when you are running?
Not in the way cold does. Above 50°F the airflow from moving at 6 mph mostly helps, by evaporating sweat — so 85°F feels cooler in motion than standing still. The risk at 85°F is overheating when you stop, not chilling while you move.
Should I dress differently running at 85°F than for cycling or walking?
Yes. A runner makes about three times a walker's heat, so you need noticeably less at 85°F than a walker does — but you make only 6 mph of airflow against a cyclist's 16, so you need less wind protection than a rider. Running is the least-clothed of the three at almost any temperature.
Is 85°F too cold to go running?
No — 85°F is comfortable for running with the right layers, and plenty of people consider it close to ideal once they are moving.
Do I need a jacket at 85°F?
Not for warmth. Carry a light wind shell in your waist or a vest pocket for the shade, the descent or the walk home, but leave it off at the start.
What should I wear running in 29°C?
29°C is 85°F, so the answer on this page is the one you want: Light tee or singlet, shorts, thin socks, SPF 30-50. Nothing about the advice changes with the scale — only the number you read off the forecast.
What changes if it rains at 85°F?
Treat it as roughly 75°F. Add a windproof or water-resistant shell over the same kit rather than adding insulation underneath — wet insulation holds water against the skin and is worse than none.