Current Sea Water Temperature:
+84.4°F
| Maximum Sea Water Temperature in May: | 89.0°F |
| Minimum Sea Water Temperature in May: | 81.2°F |
| Average water temperature in May: | 84.9°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 10 | 84.4°F | May 05 | 82.4°F |
| May 09 | 84.4°F | May 04 | 81.6°F |
| May 08 | 84.6°F | May 03 | 81.8°F |
| May 07 | 84.4°F | May 02 | 81.4°F |
| May 06 | 82.8°F | May 01 | 81.2°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 |  |
+92 |
| Cat Ba Island |  |
+86 |
| Da Lat | |
+88 |
| Da Nang | |
+90 |
| Doc Let Beach | |
+92 |
| Ha Long |  |
+88 |
| Ha Noi |  |
+90 |
| Ho Chi Minh | |
+106 |
| Mui Ne | |
+96 |
| Nha Trang | |
+94 |
| Phan Rang | |
+92 |
| Phan Thiet | |
+96 |
| Phu Quoc | |
+92 |
| Vinpearl | |
+92 |
| Vung Tau | |
+106 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Hoi An
Local time: 10:35
11 may, monday
| 1200 |  |
90°F | SW 9 mph |
| 1500 |  |
90°F | W 11 mph |
| 1800 | |
84°F | W 6 mph |
| 2100 |  |
82°F | N 4 mph |
12 may, tuesday
| 0000 | |
80°F | N 5 mph |
| 0300 | |
78°F | NE 4 mph |
| 0600 | |
78°F | NE 5 mph |
| 0900 | |
90°F | NW 5 mph |