A method for manufacturing a hot press formed steel member, the method comprising heating a steel sheet and subjecting the steel sheet to at least one time of hot press forming, the steel sheet consisting of, as a chemical composition in mass percent (hereinafter the same for chemical composition), C in a content of 0.15% to 0.4%; Si in a content of greater than 1.0% to 1.65%; Al in a content of 0.5% or less (excluding 0%); Mn in a content of 1% to 3.5%; Ti in a content of 0.10% or less (excluding 0%); and B in a content of 0.005% or less (excluding 0%), optionally, at least one element selected from the group consisting of: (a) Cr in a content of 5% or less (excluding 0%); (b) at least one element selected from the group consisting of Ni and Cu in a total content of 0.5% or less (excluding 0%); (c) Mo in a content of 1% or less (excluding 0%); (d) Nb in a content of 0.1% or less (excluding 0%); (e) P in a content of 0.02% or less; (f) S in a content of 0.02% or less; and (g) N in a content of 0.01% or less, with the remainder being iron and inevitable impurities, wherein: a temperature (heating temperature) for the heating is equal to or higher than Ac 3 transformation temperature, a starting temperature of the hot press forming is in a range from the heating temperature to martensite start (Ms) temperature, and cooling from [(Ms temperature) - 150°C] down to 80°C is performed at an average cooling rate of 20°C/s or less so that a tempering parameter (λ) as specified by Expression is in a range from 7100 to 8030, Expression expressed as follows: [Math. 1] λ = 293 × log ∑ n = 1 5000 t n ' 3600 + 20 − 430 × Si where λ represents the tempering parameter; [Si] represents the content (in mass percent) of Si in the steel; and t n ' represents a value as specified by Expression: [Math. 2] t n ' = 3600 × 10 ∧ T n − 1 + 273 293 × log t n − t n − 1 3600 + 20 − 20 where t n represents an "n-th" time (in second) when a total cooling time from [(Ms temperature) - 150°C] down to 80°C is divided into 5000 equal parts; T n represents a temperature (°C) at the n-th time t n, where t 0 is 0 second, and T 0 is [(Ms temperature) - 150°C]; and 10^{} represents {}-th power of 10. (a) Cr in a content of 5% or less (excluding 0%); (b) at least one element selected from the group consisting of Ni and Cu in a total content of 0.5% or less (excluding 0%); (c) Mo in a content of 1% or less (excluding 0%); (d) Nb in a content of 0.1% or less (excluding 0%); (e) P in a content of 0.02% or less; (f) S in a content of 0.02% or less; and (g) N in a content of 0.01% or less, a temperature (heating temperature) for the heating is equal to or higher than Ac 3 transformation temperature, a starting temperature of the hot press forming is in a range from the heating temperature to martensite start (Ms) temperature, and cooling from [(Ms temperature) - 150°C] down to 80°C is performed at an average cooling rate of 20°C/s or less so that a tempering parameter (λ) as specified by Expression is in a range from 7100 to 8030, Expression expressed as follows: [Math. 1] λ = 293 × log ∑ n = 1 5000 t n ' 3600 + 20 − 430 × Si where λ represents the tempering parameter; [Si] represents the content (in mass percent) of Si in the steel; and t n ' represents a value as specified by Expression: [Math. 2] t n ' = 3600 × 10 ∧ T n − 1 + 273 293 × log t n − t n − 1 3600 + 20 − 20 where t n represents an "n-th" time (in second) when a total cooling time from [(Ms temperature) - 150°C] down to 80°C is divided into 5000 equal parts; T n represents a temperature (°C) at the n-th time t n, where t 0 is 0 second, and T 0 is [(Ms temperature) - 150°C]; and 10^{} represents {}-th power of 10.