World Resorts Vietnam Hoi An Weather

Hoi An sea water temperature

Current sea water temperature:
+84.9°F
Minimum sea water temperature in July: 86.9°F
Maximum sea water temperature in July: 80.6°F
Average sea water temperature in July: 84.5°F

Sea water temperature for the last 10 days:

July 15 84.9°F July 10 84.2°F
July 14 84.9°F July 9 83.7°F
July 13 84.6°F July 8 83.1°F
July 12 84.9°F July 7 82.6°F
July 11 84.0°F July 6 83.7°F

When is the warmest sea in Hoi An?

Based on the data about daily sea water temperature for the last three years the warmest sea in Hoi An was noticed in August, September and July.

Monthly Sea Temperatures in Hoi An, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 85.4°F. The highest and lowest sea temperatures during the month were 86.0°F and 84.6°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 85.0°F. The highest and lowest sea temperatures during the month were 86.4°F and 84.0°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 84.2°F. The highest and lowest sea temperatures during the month were 85.1°F and 82.6°F.

Best time for vacation in Hoi An

Sunniest months:
April 17 days
May 16 days
June 16 days
Warmest months:
June 90.8 °F
August 90.3 °F
July 89.8 °F
Warmest sea temp:
August 85.5 °F
September 85.4 °F
July 84.5 °F
Coldest months:
January 73.9 °F
December 74.7 °F
February 76.1 °F
Rainiest months:
December 15 days
November 14 days
October 13 days
Windiest months:
December 7.8 mph
November 7.3 mph
April 7.2 mph

Hoi An on a weather map

Hoi An
+84°F
NW 2 mph
Feels like: +90°F
Precip.: 6%
Places in Vietnam:
Name
°F
+82°F
+66°F
+84°F
+82°F
+84°F
+84°F
+82°F
+82°F
+84°F
+82°F
+81°F
+90°F
+81°F
+84°F
+82°F
24 Hours Forecast
Hoi An
Local time: 17:42
July 15, wednesday
1800
84°F
NW
2 mph
2100
82°F
NE
7 mph
July 16, thursday
0000
81°F
NE
9 mph
0300
81°F
NE
7 mph
0600
81°F
NE
9 mph
0900
88°F
NE
11 mph
1200
88°F
NE
11 mph
1500
86°F
E
4 mph

Best place for vacation:

Units of measurement: °C / °F