Pack or skip
Umbrella for Lisbon in September
Verdict
Optional
About 4 rainy days — bring a compact umbrella if you have room.
Why
Lisbon in September averages highs of 79°F, lows of 63°F, 4 rainy days.
That climate makes an umbrella a judgment call. About 4 rainy days — bring a compact umbrella if you have room.