All data are in degrees Fahrenheit

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Water temperature in Hoi An

Detailed information about the current water temperature in Hoi An. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Hoi An now

84.5

°F

May 31, 02:48

Trend:

increasing

Yesterday:

84.4°F

Tomorrow:

84.7°F

Sunrise:

05:14

Sunset:

18:14

Day Length:

13 h. 0 min.

Hoi An in June

Minimum:

73.8°F

Average:

74.8°F

Maximum:

77.0°F

Sea water temperature in Hoi An today

As of now, in Hoi An, the water temperature is 84.5°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 1.0°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 84.8°F on 2024, while the historical minimum was 82.1°F on 2025.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 84.9°F, with minimum temperature starting at 84.7°F, while the maximum might reach 85.2°F.

Daily water temperature in Hoi An

Date Current Year

actual* / forecast**

last year 10 years average
May 17 82.6°F 81.4°F 81.8°F
May 18 82.7°F 81.0°F 81.7°F
May 19 82.6°F 81.6°F 81.8°F
May 20 83.8°F 80.9°F 82.1°F
May 21 82.7°F 81.4°F 82.1°F
May 22 82.2°F 80.9°F 82.1°F
May 23 82.3°F 81.2°F 82.2°F
May 24 82.2°F 82.0°F 82.4°F
May 25 83.5°F 82.5°F 82.8°F
May 26 83.4°F 82.3°F 83.0°F
May 27 83.6°F 82.8°F 83.3°F
May 28 83.8°F 82.7°F 83.2°F
May 29 83.9°F 81.9°F 83.2°F
May 30 84.4°F 82.0°F 83.4°F
May 31 84.5°F 82.1°F 83.5°F
Jun 1 84.7°F 81.9°F 83.6°F
Jun 2 84.7°F 82.4°F 83.7°F
Jun 3 85.2°F 83.0°F 84.1°F
Jun 4 84.8°F 82.5°F 83.8°F
Jun 5 84.9°F 82.6°F 83.9°F
Jun 6 85.1°F 82.6°F 84.0°F
Jun 7 85.1°F 83.3°F 84.1°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Hoi An by month

In Hoi An, the water temperature is comfortable for swimming all year round.
The warmest water in Hoi An was recorded on September 9, 2017, reaching a 87.6°F. While the coldest temperature occurred on February 15, 2018, dipping to 68.4°F. The average readings by season are 74.9°F in Winter, 78.3°F in Spring, 84.8°F in Summer, and 82.9°F in Autumn.