Measurements:
°C
°F
Hoi An
78°F
SW 14 mph
Feels like: 84°F
Precip: 66%
World Resorts Vietnam Hoi An Weather

Hoi An Sea Water Temperature

Current Sea Water Temperature:
+87.4°F
Maximum Sea Water Temperature in November: 88.2°F
Minimum Sea Water Temperature in November: 80.0°F
Average water temperature in November: 83.4°F

Sea Water Temperature for the Last 10 Days:

November 10 87.4°F November 05 87.4°F
November 09 88.2°F November 04 86.8°F
November 08 87.8°F November 03 87.2°F
November 07 87.4°F November 02 87.2°F
November 06 87.4°F November 01 86.6°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

Select Year: 2026 2025 2024

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

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Hoi An was 88.9°F. The maximum and minimum values were 87.8°F and 90.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

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.

Best Time to Visit Hoi An
The most sunny months:
April 17 days
May 16 days
June 16 days
The most warm months:
June 95.4 °F
August 94.7 °F
July 94.1 °F
Warmest sea temperature:
August 89.5 °F
September 89.3 °F
July 88.4 °F
The most cold months:
January 76.6 °F
December 77.5 °F
February 79.0 °F
The most rainy months:
December 15 days
November 14 days
October 13 days
The most windy months:
December 7 mph
November 7 mph
April 7 mph

Hoi An on the Weather Map

Vietnam Resorts:
NAME
F°
Cam Ranh +78
Cat Ba Island +70
Da Lat +68
Da Nang +78
Doc Let Beach +82
Ha Long +70
Ha Noi +68
Ho Chi Minh +88
Mui Ne +90
Nha Trang +82
Phan Rang +78
Phan Thiet +90
Phu Quoc +84
Vinpearl +82
Vung Tau +88
24 Hours Weather Forecast
Hoi An
Local time: 10:22
11 nov, wednesday
1200 80°F
SW
13 mph
1500 80°F
SW
12 mph
1800 78°F
SW
13 mph
2100 78°F
SW
11 mph
12 nov, thursday
0000 78°F
SW
7 mph
0300 78°F
S
4 mph
0600 78°F
S
3 mph
0900 80°F
SW
2 mph

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