Fog on the Mountain section, and wet patches at various locations around the course put paid to this evening's TT practice session.
A decision to call it off was made by 6.30pm, with no riders going out at all.
The clerk of the course had initially gone for a 20 to 30-minute delay, to see if conditions would improve, but that was not to be the case.
Manx Radio TT's Chris Kinley described the scene at the Grandstand, after the announcement was made:
Football: Corinthians beat Onchan to reach Railway Cup final
Premier league leaders hit four at The Bowl to progress
Cricket: Isle of Man's opponents confirmed for 2028 T20 world cup qualifiers
Manx squad to contest qualifier phase in Finland in August 2026
Snooker: Blinders and PSM Legion both win to go joint-top
Co-leaders claim home victories in latest fixtures
MGP Supporters club considering winding down operations
Organisation celebrated 50th anniversary this year
