Pack or skip
Insect repellent for Tokyo in June
Verdict
Pack it
Warm (78°F) plus 12 rainy days = mosquito conditions.
Why
Tokyo in June averages highs of 78°F, lows of 65°F, 12 rainy days.
That climate means insect repellent earns its space in the bag. Warm (78°F) plus 12 rainy days = mosquito conditions.