Yes. While the sealed design of an IP68 enclosure prevents water and dust ingress, it limits natural ventilation, making internal heat dissipation difficult. Power supplies, controllers, communication modules, and other electrical components generate heat, requiring thermal evaluation based on power ratings, ambient temperatures, and duty cycles.

Additionally, internal-external temperature shifts and humidity changes can cause condensation—particularly in outdoor galvanized or stainless steel wall-mount IP68 electrical enclosures. Thermal management solutions such as insulation, anti-condensation heaters, thermal conduction structures, or other methods must be integrated without compromising the target ingress rating.

Using fans or vents requires verifying that sealing integrity is preserved; for fully sealed structures, internal temperatures must be regulated via component layout and conduction design. IP68 ingress protection and thermal management must be co-engineered, not retrofitted with drilled vents.