Tyler Herro is the youngest for the Heat with 20.0+ points per game in a season. He was 22 years old in 2021-22.

miami heat youngest players to average 20+ ppg in a season

NAME	AGE	PPG	SEASON	TM	GP	MPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Tyler Herro	22	20.7	2021-22	MIA	66	32.6	5.0	4.0	0.7	0.1	2.6	7.6	17.0	44.7	2.7	6.7	39.9	2.9	3.3	86.8	2,151	1,367	329	263	44	8	174	95	+240
Tyler Herro	23	20.1	2022-23	MIA	67	34.9	5.4	4.2	0.8	0.2	2.4	7.3	16.6	43.9	3.0	8.0	37.8	2.5	2.7	93.4	2,337	1,347	360	280	51	16	158	101	+167
Dwyane Wade	23	24.1	2004-05	MIA	77	38.6	5.2	6.8	1.6	1.1	4.2	8.2	17.1	47.8	0.2	0.6	28.9	7.5	9.9	76.2	2,974	1,854	397	520	121	82	321	230	+397
Tyler Herro	24	20.8	2023-24	MIA	42	33.5	5.3	4.5	0.7	0.1	2.2	7.7	17.5	44.1	3.1	7.9	39.6	2.3	2.6	85.6	1,407	875	222	188	30	3	93	63	+31
Dwyane Wade	24	27.2	2005-06	MIA	75	38.6	5.7	6.7	1.9	0.8	3.6	9.3	18.8	49.5	0.2	1.0	17.1	8.4	10.7	78.3	2,892	2,040	430	503	146	58	268	217	+485
Glen Rice	24	22.3	1991-92	MIA	79	38.1	5.0	2.3	1.1	0.4	1.8	8.5	18.1	46.9	2.0	5.0	39.1	3.4	4.0	83.6	3,007	1,765	394	184	90	35	145	170
Bam Adebayo	25	20.4	2022-23	MIA	75	34.6	9.2	3.2	1.2	0.8	2.5	8.0	14.9	54.0	0.0	0.2	8.3	4.3	5.4	80.6	2,598	1,529	688	240	88	61	187	208	+117
Dwyane Wade	25	27.4	2006-07	MIA	51	37.9	4.7	7.5	2.1	1.2	4.2	9.3	18.9	49.1	0.4	1.5	26.6	8.5	10.5	80.7	1,931	1,397	239	384	107	62	216	117	+96
Alonzo Mourning	25	23.2	1995-96	MIA	70	38.2	10.4	2.3	1.0	2.7	3.7	8.0	15.4	52.3	0.1	0.4	30.0	7.0	10.2	68.5	2,671	1,623	727	159	70	189	262	245
Steve Smith	25	20.5	1994-95	MIA	2	31.0	3.0	3.5	1.0	0.5	2.0	5.5	14.5	37.9	1.0	6.0	16.7	8.5	11.0	77.3	62	41	6	7	2	1	4	9
LeBron James	26	26.7	2010-11	MIA	79	38.8	7.5	7.0	1.6	0.6	3.6	9.6	18.8	51.0	1.2	3.5	33.0	6.4	8.4	75.9	3,063	2,111	590	554	124	50	284	163	+619
Dwyane Wade	26	24.6	2007-08	MIA	51	38.3	4.2	6.9	1.7	0.7	4.4	8.6	18.4	46.9	0.4	1.5	28.6	6.9	9.2	75.8	1,954	1,254	214	354	87	37	224	137	-255
Glen Rice	26	21.1	1993-94	MIA	81	37.0	5.4	2.3	1.4	0.4	1.6	8.2	17.5	46.7	1.6	4.3	38.2	3.1	3.5	88.0	2,999	1,708	434	184	110	32	130	186
LeBron James	27	27.1	2011-12	MIA	62	37.5	7.9	6.2	1.9	0.8	3.4	10.0	18.9	53.1	0.9	2.4	36.2	6.2	8.1	77.1	2,326	1,683	492	387	115	50	213	96	+473
Dwyane Wade	27	30.2	2008-09	MIA	79	38.6	5.0	7.5	2.2	1.3	3.4	10.8	22.0	49.1	1.1	3.5	31.7	7.5	9.8	76.5	3,048	2,386	398	589	173	106	272	178	+216
Glen Rice	27	22.3	1994-95	MIA	82	36.8	4.6	2.3	1.4	0.2	1.9	8.1	17.1	47.5	2.3	5.5	41.0	3.8	4.5	85.5	3,014	1,831	378	192	112	14	153	203
LeBron James	28	26.8	2012-13	MIA	76	37.9	8.0	7.3	1.7	0.9	3.0	10.1	17.8	56.5	1.4	3.3	40.6	5.3	7.0	75.3	2,877	2,036	610	551	129	67	226	110	+720
Dwyane Wade	28	26.6	2009-10	MIA	77	36.3	4.8	6.5	1.8	1.1	3.3	9.3	19.6	47.6	0.9	3.2	30.0	6.9	9.1	76.1	2,792	2,045	373	501	142	82	252	181	+353
Alonzo Mourning	28	20.1	1998-99	MIA	46	38.1	11.0	1.6	0.7	3.9	3.0	7.0	13.8	51.1	0.0	0.0	0.0	6.0	9.2	65.2	1,753	924	507	74	34	180	139	161	+340
LeBron James	29	27.1	2013-14	MIA	77	37.7	6.9	6.3	1.6	0.3	3.5	10.0	17.6	56.7	1.5	4.0	37.9	5.7	7.6	75.0	2,902	2,089	533	488	121	26	270	126	+410
Dwyane Wade	29	25.5	2010-11	MIA	76	37.1	6.4	4.6	1.5	1.1	3.1	9.1	18.2	50.0	0.8	2.7	30.6	6.5	8.6	75.8	2,823	1,941	485	346	111	87	237	197	+572
Alonzo Mourning	29	21.7	1999-00	MIA	79	34.8	9.5	1.6	0.5	3.7	2.7	8.3	15.0	55.1	0.0	0.1	0.0	5.2	7.4	71.1	2,748	1,718	753	123	40	294	217	308	+270
Goran Dragic	30	20.3	2016-17	MIA	73	33.7	3.8	5.8	1.2	0.2	2.9	7.3	15.4	47.5	1.6	4.0	40.5	4.1	5.2	79.0	2,459	1,483	279	423	89	13	212	199	+66
Chris Bosh	30	21.1	2014-15	MIA	44	35.4	7.0	2.2	0.9	0.6	2.2	7.8	16.9	46.0	1.4	3.8	37.5	4.1	5.3	77.2	1,556	928	310	95	41	25	95	69	-99
Dwyane Wade	30	22.1	2011-12	MIA	49	33.2	4.8	4.6	1.7	1.3	2.6	8.5	17.1	49.7	0.3	1.1	26.8	4.8	6.1	79.1	1,625	1,082	237	225	82	63	129	110	+344