Pack or skip
Winter coat for Porto in September
Verdict
Skip it
Lows stay near 60°F — a coat is overkill.
Why
Porto in September averages highs of 76°F, lows of 60°F, 6 rainy days.
That climate means a winter coat isn't pulling its weight. Lows stay near 60°F — a coat is overkill.
What to bring instead
Consider packable down jacket instead →
See the pack-or-skip verdict for packable down jacket in Porto in September.