Hilton Head Island in July
Find out everything about the water temperature in Hilton Head Island in July. Average, minimum and maximum recorded temperatures as well as daily temperature in July for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in July
Minimum:
81.6 °F
Average:
84.9 °F
Maximum:
88.3 °F
Sea water temperature in Hilton Head Island in July
In the city of Hilton Head Island, the month of July is a great time for swimming. The minimum recorded temperature during this month was 81.6°F on July 3, 2015, with an average temperature being 84.9°F and a maximum temperature reaching 88.3°F on July 31, 2025.
| Date | 10 years average | 2025 | 2024 |
|---|---|---|---|
| Jul 1 | 83.5°F | 85.7°F | 85.0°F |
| Jul 2 | 83.5°F | 84.9°F | 84.9°F |
| Jul 3 | 83.9°F | 85.1°F | 85.1°F |
| Jul 4 | 83.9°F | 84.5°F | 84.8°F |
| Jul 5 | 84.1°F | 85.0°F | 85.0°F |
| Jul 6 | 84.3°F | 84.4°F | 85.3°F |
| Jul 7 | 84.3°F | 84.1°F | 85.8°F |
| Jul 8 | 84.4°F | 84.3°F | 85.7°F |
| Jul 9 | 84.5°F | 84.4°F | 85.7°F |
| Jul 10 | 84.6°F | 85.0°F | 85.2°F |
| Jul 11 | 84.7°F | 85.0°F | 86.7°F |
| Jul 12 | 84.8°F | 84.2°F | 86.5°F |
| Jul 13 | 84.8°F | 83.9°F | 86.6°F |
| Jul 14 | 85.0°F | 84.6°F | 86.6°F |
| Jul 15 | 85.0°F | 84.6°F | 87.2°F |
| Jul 16 | 85.1°F | 85.5°F | 87.3°F |
| Jul 17 | 85.2°F | 85.3°F | 86.8°F |
| Jul 18 | 85.2°F | 85.6°F | 87.1°F |
| Jul 19 | 85.3°F | 85.1°F | 86.2°F |
| Jul 20 | 85.4°F | 86.8°F | 85.4°F |
| Jul 21 | 85.5°F | 86.5°F | 85.3°F |
| Jul 22 | 85.5°F | 86.9°F | 85.3°F |
| Jul 23 | 85.5°F | 86.7°F | 86.6°F |
| Jul 24 | 85.6°F | 87.0°F | 87.5°F |
| Jul 25 | 85.6°F | 86.6°F | 87.2°F |
| Jul 26 | 85.5°F | 86.6°F | 86.9°F |
| Jul 27 | 85.6°F | 86.8°F | 86.8°F |
| Jul 28 | 85.6°F | 88.1°F | 86.0°F |
| Jul 29 | 85.4°F | 88.0°F | 85.3°F |
| Jul 30 | 85.4°F | 87.7°F | 85.0°F |
| Jul 31 | 85.4°F | 88.3°F | 85.3°F |
In Hilton Head Island, the months May through October offer comfortable swimming conditions, which amounts to 162 swimming days.
The warmest water in Hilton Head Island was recorded on August 1, 2025, reaching a 88.8°F. While the coldest temperature occurred on January 24, 2025, dipping to 44.6°F. The average readings by season are 56.6°F in Winter, 67.8°F in Spring, 83.6°F in Summer, and 74.4°F in Autumn.
While July's temperature is warmer than June's average of 81.1°F, as August takes over, the temperature remains steady at 84.9°F.