Will I be hot?
Will I be hot in Stockholm in April?
Verdict
No — No, comfortable.
Highs cap at 52°F — no heat-management gear needed.
Day vs. night
Day
52°F
Cool
Sweater weather with the option to add a light shell.
Night
36°F
Cold
Cold enough that a hat and gloves become mandatory.
Why
Stockholm in April averages highs of 52°F, lows of 36°F, 8 rainy days.
Temperature is comfortable across the day; pack for style and weather resistance, not heat management.