Pack or skip
Winter coat for San Diego in June
Verdict
Skip it
Lows stay near 64°F — a coat is overkill.
Why
San Diego in June averages highs of 77°F, lows of 64°F, 0 rainy days.
That climate means a winter coat isn't pulling its weight. Lows stay near 64°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 San Diego in June.