I checked the link you provided to me, i don't think the BME680 is not wel soldered on the board which will cause your current issue of higher temperature.
What is your room temperature as reference here?
In general, i will say 33 degrees from BME680 API looks bit higher than expectation.
I need more details from your setup up which includes picture of system, position of BME680, sensor read out raw value, all calibration parameters from sensor, for better understanding the root cause of this issue.
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