The seven-time world champion achieved a stunning 104th career victory at the British Grand Prix, crossing the line ahead of championship leader Max Verstappen.
"The Mercedes has always been strong in the cooler conditions, and they looked to have things pretty much in control.
"Then Lewis came alive as it started to rain, and then the McLaren really came alive and passed both of us. So, it was moving around depending on what was going on.
"In those conditions, you'd expect Max to then really come alive as well, but he was struggling at that point.
"Then, as the circuit started to dry out, the pace arrived back and we were at times six, seven-tenths a lap quicker than Lewis and Lando [Norris]."
F1 returns for the Hungarian Grand Prix on July 21, where Red Bull and Verstappen will be looking to prove they haven't lost their dominant form.