Pack or skip
Thermal underwear for Tbilisi in July
Verdict
Skip it
Lows near 67°F — you'll overheat.
Why
Tbilisi in July averages highs of 86°F, lows of 67°F, 6 rainy days.
That climate means thermal underwear isn't pulling its weight. Lows near 67°F — you'll overheat.