Excellent choice — #3 of 31 Hemp ranks #3 of 31 fabrics for excessive sweating. It is one of the best fabrics for this. Ranked on breathability and moisture handling, penalised for weight. The top pick is Merino.
Hemp measures 90/100 for breathability, 12% moisture regain, 20/100 warmth, at 200 gsm. For excessive sweating, high breathability and strong moisture absorption decide comfort — and its low warmth avoids trapping heat against the skin.