Pack or skip
Insect repellent for Seattle in May
Verdict
Pack it
Warm (66°F) plus 9 rainy days = mosquito conditions.
Why
Seattle in May averages highs of 66°F, lows of 48°F, 9 rainy days.
That climate means insect repellent earns its space in the bag. Warm (66°F) plus 9 rainy days = mosquito conditions.