25 °C outfit by wind, rain and effort
The same 25 °C can call for very different clothes. Harder running warms you up, so you can dress a level lighter; wind and rain make it feel colder. Rows that change the outfit are marked.
| Situation | Level | Top | Bottom | Hands & head |
|---|---|---|---|---|
| Easy or long run, calm and dry | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
| Tempo or interval workout | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
| Race | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
| Easy run, 10 mph (16 km/h) wind wind adds little at this temperature | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
| Easy run, 20 mph (32 km/h) wind wind adds little at this temperature | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
| Light rain or drizzle Cap with a brim; no cotton | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
| Heavy rain Cap with a brim; accept getting wet; anti-chafe balm | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
| You usually feel the cold | Warm ● | Short-sleeve technical tee | Shorts | Cap or visor |
| You usually run hot | Hot | Singlet or light tank top | Short running shorts | Visor or cap, sunglasses |
● a different outfit level from the calm, easy-run outfit. "Feel the cold" and "run hot" shift the temperature by 7 °F (4 °C); workouts by 5 °F and races by 10 °F.
Shorts or tights at 25 °C?
Shorts, as short and light as you are comfortable in. If you feel the cold, dress for the warm level; if you run hot, the hot level is usually enough.
Is 25 °C too hot to run?
No, but it is warm enough to slow you down. Expect easy runs to feel harder than usual, drink regularly on runs over an hour, and run in the shade or at cooler times of day when you can.
Staying cool at 25 °C
At 25 °C the question is how little to wear. Choose light colours and loose, wicking fabrics, protect yourself from the sun, and slow your pace on longer runs. The heat pace calculator shows how much slower to run, and the sweat rate calculator how much to drink.
What to wear at other temperatures
In Fahrenheit: what to wear running at 75 °F. Every temperature in one table: what to wear running calculator.
- National Weather Service. Wind chill chart and formula (2001 revision).
- El Helou N. et al. (2012). Impact of environmental parameters on marathon running performance. PLoS ONE 7(5): e37407.
- Outfit levels are a practical guide compiled from common coaching advice; adjust them to how you feel on your own runs. Last reviewed October 2026.