Current Sea Water Temperature:
+89.8°F
| Maximum Sea Water Temperature in September: | 91.8°F |
| Minimum Sea Water Temperature in September: | 85.6°F |
| Average water temperature in September: | 89.4°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| September 11 | 89.8°F | September 06 | 89.8°F |
| September 10 | 89.8°F | September 05 | 89.8°F |
| September 09 | 89.6°F | September 04 | 89.4°F |
| September 08 | 89.8°F | September 03 | 88.6°F |
| September 07 | 90.0°F | September 02 | 88.4°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 2026 for Hoi An was 90.1°F. The maximum and minimum values were 88.8°F and 91.0°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 88.8°F. The maximum and minimum values were 86.2°F and 91.0°F respectively.
Vietnam Resorts:
NAME
F°
| Cam Ranh |  |
+82 |
| Da Lat | |
+64 |
| Da Nang | |
+82 |
| Doc Let Beach | |
+82 |
| Ha Long |  |
+78 |
| Ha Noi |  |
+80 |
| Ho Chi Minh |  |
+80 |
| Hoi An | |
+82 |
| Mui Ne | |
+78 |
| Nha Trang | |
+82 |
| Phan Rang | |
+82 |
| Phan Thiet | |
+78 |
| Phu Quoc | |
+80 |
| Vinpearl | |
+82 |
| Vung Tau | |
+76 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hoi An
Local time: 21:58
12 sep, saturday
| 0000 |  |
80°F | S 12 mph |
| 0300 |  |
80°F | SE 18 mph |
| 0600 | |
80°F | S 24 mph |
| 0900 | |
80°F | S 19 mph |
| 1200 | |
80°F | S 21 mph |
| 1500 | |
78°F | SE 17 mph |
| 1800 | |
80°F | SE 19 mph |
| 2100 | |
80°F | S 16 mph |