What to wear by temperature
The question before leaving home is always the same: what do I wear today? The chart below uses the default thresholds of the HIRKA app. Values are feels-like temperatures, so wind and humidity are already counted. Use the "feels like" value from your weather app.
Outfit chart by feels-like temperature
| Feels like (°F) | Feels like (°C) | HIRKA level | What to wear |
|---|---|---|---|
| 100°F and above | 38°C+ | Bugün çıkma (stay in) | Extreme heat. Stay in shade, drink water, avoid the midday hours if you can. |
| 70 - 99°F | 21 - 37°C | Atlet havası (tank-top) | Tank top, thin cotton or linen, shorts. Sunscreen and a hat. |
| 61 - 68°F | 16 - 20°C | Atlet havası (tank-top) | T-shirt and light trousers. If you will be out until evening, carry something thin. |
| 55 - 59°F | 13 - 15°C | Hırka havası (cardigan) | Light jacket, or a thin layer over a shirt. |
| 50 - 54°F | 10 - 12°C | Hırka havası (cardigan) | Cardigan or sweater and long trousers. Close the collar if it is windy. |
| 36 - 48°F | 2 - 9°C | Mont havası (coat) | Coat over a sweater or thermal top. A beanie and thin gloves help. |
| 19 - 34°F | -7 - 1°C | Mont havası (coat) | Heavy coat, scarf, beanie, gloves. Dress in layers. |
| 18°F and below | -8°C and below | Bugün çıkma (stay in) | Dangerously cold. Stay in unless you must go, and cover exposed skin. |
How the chart shifts for you
The same weather does not feel the same to everyone. HIRKA moves the two thresholds based on three things:
- Your cold setting: choose "easily chilled" and thresholds go up, so you are advised to dress warmer in the same weather. Choose "hardly ever cold" and they go down.
- How you get around: cycling shifts thresholds up by about 1.5°C because of wind, public transport down by about 1°C and driving down by about 2°C.
- Your feedback: answer "a bit cool" or "a bit warm" at the end of the day and HIRKA learns you.
What else to check besides temperature
- Wind: wind above about 20 km/h (12 mph) makes the same temperature feel colder. What to wear in rain and wind
- Swing during the day: 9°C in the morning and 18°C at noon needs layers. See layering for changing weather.
- Rain: if it rains, bring an umbrella or rain jacket whatever the temperature.
HIRKA does this maths for you and answers in one sentence. See the four levels or read how cardigan weather is calculated.
Frequently asked questions
What should I wear at 15°C (59°F)?
A light jacket or a thin layer over a shirt is enough. HIRKA calls this range cardigan weather (Hırka havası).
What should I wear at 10°C (50°F)?
A cardigan or sweater with long trousers. Add a windproof layer if it is windy. Under 10°C feels-like, HIRKA switches to coat weather by default.
What should I wear at 20°C (68°F)?
A T-shirt and light trousers. Carry a thin cardigan if you will be out in the evening.
What should I wear at 5°C (41°F)?
A coat over a sweater or thermal top, plus a beanie and thin gloves.
Why use the feels-like temperature?
Wind and humidity change how cold the air feels. A windy 10°C feels noticeably colder than a calm 10°C, so HIRKA decides based on the feels-like value.