${\mathrm{\Delta S}}_{\mathrm{surrounding}}=\frac{-{\mathrm{q}}_{\mathrm{process}}}{{\mathrm{T}}_{\mathrm{surrounding}}}$

If $\mathrm{\Delta H}>0$, on increasing temperature, ${\mathrm{K}}_{\mathrm{equilibrium}}$ also increase, so ${\mathrm{\Delta S}}_{\mathrm{surrounding}}<0$ (Surrounding is unfavourable).

If $\mathrm{\Delta H}<0$, on increasing temperature ${\mathrm{K}}_{\mathrm{equilibrium}}$, decreases, so ${\mathrm{\Delta S}}_{\mathrm{surrounding}}>0$ (Surrounding is favourable).