Current Sea Water Temperature:
+90.6°F
| Maximum Sea Water Temperature in July: | 91.0°F |
| Minimum Sea Water Temperature in July: | 84.0°F |
| Average water temperature in July: | 88.3°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| July 30 | 90.6°F | July 25 | 91.0°F |
| July 29 | 89.8°F | July 24 | 90.4°F |
| July 28 | 90.4°F | July 23 | 90.0°F |
| July 27 | 90.2°F | July 22 | 88.8°F |
| July 26 | 90.6°F | July 21 | 88.6°F |
When is the Warmest Sea for Hoi An?
According to our data for the last three years for Hoi An the highest average sea water temperature was in August, September and July.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Hoi An was 89.3°F. The maximum and minimum values were 88.4°F and 90.0°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Hoi An was 88.9°F. The maximum and minimum values were 87.8°F and 90.4°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for Hoi An was 88.7°F. The maximum and minimum values were 86.2°F and 91.0°F respectively.
Vietnam Resorts:
NAME
F°
| Cam Ranh |  |
+80 |
| Da Lat |  |
+66 |
| Da Nang |  |
+80 |
| Doc Let Beach | |
+80 |
| Ha Long | |
+82 |
| Ha Noi |  |
+82 |
| Ho Chi Minh | |
+80 |
| Hoi An | |
+80 |
| Mui Ne | |
+80 |
| Nha Trang | |
+80 |
| Phan Rang | |
+80 |
| Phan Thiet | |
+80 |
| Phu Quoc | |
+84 |
| Vinpearl | |
+80 |
| Vung Tau | |
+78 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hoi An
Local time: 01:21
31 jul, friday
| 0300 |  |
80°F | NE 6 mph |
| 0600 |  |
80°F | NE 4 mph |
| 0900 |  |
84°F | E 2 mph |
| 1200 | |
86°F | SW 6 mph |
| 1500 |  |
88°F | S 6 mph |
| 1800 |  |
84°F | SW 6 mph |
| 2100 | |
84°F | N 3 mph |
01 aug, saturday
| 0000 | |
82°F | NE 5 mph |