No. It is warm: most people are comfortable in short sleeves. Short sleeves by day, one light layer in reserve for the evening.

Outfit guide · 25°C · 77°F

What to wear in 25°C (77°F) weather

Short sleeves by day, one light layer in reserve for the evening.

The formula

Outer layer: Unlined cotton overshirt or a light linen jacket, for the evening
Top: Short-sleeve knit polo, cotton tee, fluid blouse
Bottom: Cotton chinos, light straight-leg denim, linen-blend trousers
Shoes: Clean leather sneakers, loafers without socks
Extras: A light scarf for air conditioning

Fabrics. Cotton, linen blends, fine-gauge knit

Palette. Ecru, light grey and sand, with a navy accent.

Squarely in the middle of this range: the formula above works as written.

If the morning sits around 20°C, start with the outer layer from the mild guide; by an afternoon near 28°C you will want it off.

If it rains at 25°C: swap the outer layer for a water-resistant one and choose leather or rubber-soled shoes.

Air-conditioned offices run cold. A thin layer saves the afternoon.

No. It is warm: most people are comfortable in short sleeves.

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Every range, from the outer layer down to the shoes.

Temperature	Feels	Outer layer
28°C and above	Hot	None. Carry a thin overshirt only for air-conditioned rooms
23–27°C	Warm	Unlined cotton overshirt or a light linen jacket, for the evening
20–22°C	Mild	Optional: a cotton cardigan or an unstructured blazer
17–19°C	Fresh	Light jacket, overshirt or a cotton trench worn open
12–16°C	Cool	Trench coat, wool-blend jacket or a light suede jacket
9–11°C	Chilly	Light wool coat or a lined trench
5–8°C	Cold	Wool or cashmere-blend overcoat
0–4°C	Very cold	Down coat, padded parka or a heavy double-faced wool coat
Below 0°C	Freezing	Long down coat with a hood