Pack or skip
Insect repellent for Portland in May
Verdict
Pack it
Warm (67°F) plus 10 rainy days = mosquito conditions.
Why
Portland in May averages highs of 67°F, lows of 49°F, 10 rainy days.
That climate means insect repellent earns its space in the bag. Warm (67°F) plus 10 rainy days = mosquito conditions.