Current Sea Water Temperature:
+88.2°F
| Maximum Sea Water Temperature in May: | 89.0°F |
| Minimum Sea Water Temperature in May: | 81.2°F |
| Average water temperature in May: | 85.0°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 30 | 88.2°F | May 25 | 87.2°F |
| May 29 | 87.6°F | May 24 | 85.8°F |
| May 28 | 87.6°F | May 23 | 85.8°F |
| May 27 | 87.4°F | May 22 | 85.8°F |
| May 26 | 87.2°F | May 21 | 86.4°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 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 2025 for Hoi An was 88.9°F. The maximum and minimum values were 86.8°F and 90.4°F respectively.
Vietnam Resorts:
NAME
F°
| Cam Ranh |  |
+84 |
| Da Lat | |
+72 |
| Da Nang |  |
+92 |
| Doc Let Beach |  |
+86 |
| Ha Long | |
+94 |
| Ha Noi | |
+100 |
| Ho Chi Minh |  |
+92 |
| Hoi An | |
+92 |
| Mui Ne | |
+84 |
| Nha Trang | |
+88 |
| Phan Rang | |
+84 |
| Phan Thiet | |
+84 |
| Phu Quoc | |
+88 |
| Vinpearl | |
+86 |
| Vung Tau | |
+94 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hoi An
Local time: 12:29
31 may, sunday
| 1500 |  |
92°F | SW 10 mph |
| 1800 |  |
86°F | W 5 mph |
| 2100 |  |
82°F | N 4 mph |
01 jun, monday
| 0000 | |
80°F | NE 6 mph |
| 0300 | |
78°F | NE 5 mph |
| 0600 |  |
80°F | NE 5 mph |
| 0900 | |
90°F | NW 4 mph |
| 1200 | |
94°F | W 13 mph |