Obviously use low ESR capacitors.
The bridge rectifier you're using is rated to 150oC, so 53oC is no problem.
What is the temperature rating of the capacitors? I've not seen any rated to any less than 85oC, so 45oC is no problem.
The components are clearly working at well below their maximum temperature ratings, with plenty of headroom to spare. You should only be worried if you plan to use the device in an environment 35oC hotter, than where you tested it and measured these temperatures. If so, use higher temperature rating capacitors: 105oC is pretty common nowadays. The bridge rectifier can stand much higher temperatures before being damaged and the forward voltage has a negative temperature coefficient, so power dissipation, thus heating will decrease, with increasing temperature.