What temperature is it?
A quick google shows a range of SFP+ devices with a maximum of 85°
I have three 4 devices all with Cisco 10Gb SFP+ modules
CRS310-8G+2S+ : 38°
CRS328-24P-4S+ : 46°, 43° and 44°
RB5009UG+S+ : 43°
CRS326-24G-2S+ : 44°
Chances are yours is fine!