As of 15:21 EDT

Hilton Head Island, SC weather in September

89°

Hilton Head Island, Sunday, 9 August, 15:21

Mostly clear. Feels like 102°. High 89°, low 75°.

Pressure30.09 inHg

Wind2 mph N

Humidity76%

Visibility6.2 mi

Dew point80°

See detailed hourly forecast

In September, Hilton Head Island, SC averages a high of 81.5° and a low of 72.9°. About 4.8 inches of precipitation fall over the month (14 wet days). The record high is 94.8° (2018) and the record low 52.9° (1967). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	83.3°	75.2°	58%	91.2° (1970)	66.7° (2025)
2	82.8°	74.8°	62%	92.1° (2020)	66.4° (1972)
3	83.1°	74.8°	50%	93.4° (2020)	68° (2025)
4	82.9°	74.8°	50%	93.9° (2020)	67.6° (1994)
5	82.6°	74.7°	62%	94.1° (2020)	67.1° (1967)
6	82.6°	74.1°	62%	90.7° (1983)	68.4° (1972)
7	82.8°	74.3°	55%	91.4° (2023)	68° (1972)
8	82.4°	73.9°	50%	88.9° (1998)	67.5° (1988)
9	82.2°	74.1°	47%	88.5° (2010)	67.8° (2025)
10	82.2°	73.8°	47%	90.5° (1985)	62.6° (2017)
11	82.4°	73.8°	42%	90.5° (1985)	63.3° (1998)
12	82.2°	73.8°	48%	88.9° (1984)	66.7° (1967)
13	82°	73.6°	43%	91.8° (2018)	64.6° (1964)
14	82.2°	73.2°	37%	94.8° (2018)	60.8° (1985)
15	82.4°	73.2°	43%	90° (1972)	65.1° (2001)
16	82.2°	73.4°	48%	90.3° (2005)	61° (2001)
17	81.3°	73.2°	47%	90.3° (2019)	62.6° (1961)
18	81.5°	72.7°	45%	89.4° (1972)	62.8° (1961)
19	81°	72.3°	45%	90.5° (2018)	60.4° (1981)
20	80.8°	72.3°	52%	90° (2010)	60.8° (2020)
21	81°	72.7°	48%	88.9° (1990)	60.4° (2020)
22	80.8°	72.1°	38%	91.8° (2022)	59° (2020)
23	80.6°	71.2°	35%	86.4° (1980)	61.9° (1983)
24	79.7°	71.1°	37%	87.3° (2019)	59.7° (1963)
25	79.9°	71.4°	42%	87.4° (2023)	61.7° (1990)
26	80.1°	71.4°	50%	88.9° (2022)	61.7° (1982)
27	80.1°	72°	40%	88.9° (2017)	60.8° (1982)
28	80.2°	70.7°	38%	90.7° (2017)	60.4° (1962)
29	78.8°	70°	38%	87.1° (2019)	57.2° (1967)
30	78.3°	69.1°	37%	88.3° (2019)	52.9° (1967)