A curable silicone composition comprising: an organopolysiloxane having at least two alkenyl groups with 2 to 12 carbon atoms and at least one aryl group with 6 to 20 carbon atoms in each molecule; a polyoxyalkylene compound represented by the general formula: XO-(C 2 H 4 O) p (C n H 2n O) q r -X wherein, each X represents the same or different hydrogen atom, alkyl group with 1 to 12 carbon atoms, alkenyl group with 1 to 12 carbon atoms, aryl group with 6 to 20 carbon atoms, acryl group, or methacryl group, provided that at least one X in each molecule is the alkenyl group, the acryl group, or the methacryl group, Y represents a divalent hydrocarbon group with 2 to 20 carbon atoms, n represents an integer of 3 to 6, p and q are integers satisfying: 2 ≤ p ≤ 100 and 0 ≤ q ≤ 50, and r represents 0 or 1; an organopolysiloxane having at least two silicon bonded hydrogen atoms in each molecule; a catalyst for a hydrosilylation reaction,and a diorganosiloxane oligomer having at least one aryl group with 6 to 20 carbon atoms and not having a hydrosilylation reactive functional group in each molecule. wherein the content of component is an amount such that the total amount of units represented by the formula: C 2 H 4 O in component is 0.4 to 40 mass% with respect to the total amount of components to, wherein the content of component is an amount such that the silicon bonded hydrogen atoms in component are 0.1 to 5 mol per 1 mol of the total aliphatic unsaturated carbon-carbon bonds in components and, and wherein the content of component is a sufficient amount to promote curing of the present composition, wherein the content of Component is an amount of 1 to 50 parts by mass with respect to 100 parts by mass of the total of components to. and wherein component is a diorganosiloxane oligomer represented by the general formula: wherein, each R is the same or different monovalent hydrocarbon group with 1 to 12 carbon atoms not having an aliphatic unsaturated bond, provided that at least one R in each molecule is an aryl group with 6 to 20 carbon atoms, while x is an integer of 3 to 10. an organopolysiloxane having at least two alkenyl groups with 2 to 12 carbon atoms and at least one aryl group with 6 to 20 carbon atoms in each molecule; a polyoxyalkylene compound represented by the general formula: XO-(C 2 H 4 O) p (C n H 2n O) q r -X wherein, each X represents the same or different hydrogen atom, alkyl group with 1 to 12 carbon atoms, alkenyl group with 1 to 12 carbon atoms, aryl group with 6 to 20 carbon atoms, acryl group, or methacryl group, provided that at least one X in each molecule is the alkenyl group, the acryl group, or the methacryl group, Y represents a divalent hydrocarbon group with 2 to 20 carbon atoms, n represents an integer of 3 to 6, p and q are integers satisfying: 2 ≤ p ≤ 100 and 0 ≤ q ≤ 50, and r represents 0 or 1; an organopolysiloxane having at least two silicon bonded hydrogen atoms in each molecule; a catalyst for a hydrosilylation reaction,and a diorganosiloxane oligomer having at least one aryl group with 6 to 20 carbon atoms and not having a hydrosilylation reactive functional group in each molecule. wherein the content of component is an amount such that the total amount of units represented by the formula: C 2 H 4 O in component is 0.4 to 40 mass% with respect to the total amount of components to, wherein the content of component is an amount such that the silicon bonded hydrogen atoms in component are 0.1 to 5 mol per 1 mol of the total aliphatic unsaturated carbon-carbon bonds in components and, and wherein the content of component is a sufficient amount to promote curing of the present composition, wherein the content of Component is an amount of 1 to 50 parts by mass with respect to 100 parts by mass of the total of components to. and wherein component is a diorganosiloxane oligomer represented by the general formula: wherein, each R is the same or different monovalent hydrocarbon group with 1 to 12 carbon atoms not having an aliphatic unsaturated bond, provided that at least one R in each molecule is an aryl group with 6 to 20 carbon atoms, while x is an integer of 3 to 10.