All data are in degrees Fahrenheit

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Water temperature in Nagasaki

Detailed information about the current water temperature in Nagasaki. 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 Nagasaki now

76.3

°F

June 19, 21:23

Trend:

stable

Yesterday:

76.6°F

Tomorrow:

76.4°F

Sunrise:

05:12

Sunset:

19:31

Day Length:

14 h. 19 min.

Nagasaki in June

Minimum:

59.4°F

Average:

61.0°F

Maximum:

62.6°F

Sea water temperature in Nagasaki today

As of now, in Nagasaki, the water temperature is 76.3°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.2°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 stay about the same.

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 76.1°F on 2023, while the historical minimum was 72.2°F on 2017.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 76.7°F, with minimum temperature starting at 76.4°F, while the maximum might reach 77.1°F.

Daily water temperature in Nagasaki

Date Current Year

actual* / forecast**

last year 10 years average
Jun 5 72.2°F 68.8°F 70.8°F
Jun 6 72.4°F 69.8°F 71.0°F
Jun 7 73.3°F 70.0°F 71.2°F
Jun 8 74.6°F 70.1°F 71.5°F
Jun 9 74.2°F 70.3°F 71.8°F
Jun 10 73.5°F 70.4°F 72.2°F
Jun 11 73.3°F 70.5°F 72.2°F
Jun 12 74.0°F 70.7°F 72.5°F
Jun 13 73.0°F 70.8°F 72.6°F
Jun 14 73.7°F 71.0°F 73.0°F
Jun 15 74.5°F 71.7°F 73.4°F
Jun 16 74.5°F 71.7°F 73.4°F
Jun 17 75.3°F 72.8°F 73.9°F
Jun 18 76.6°F 73.0°F 73.9°F
Jun 19 76.3°F 74.0°F 74.1°F
Jun 20 76.4°F 75.5°F 74.2°F
Jun 21 76.5°F 75.4°F 74.3°F
Jun 22 76.8°F 76.7°F 74.6°F
Jun 23 76.7°F 76.6°F 74.4°F
Jun 24 76.8°F 76.4°F 74.6°F
Jun 25 76.8°F 76.4°F 74.6°F
Jun 26 77.1°F 76.4°F 74.9°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 Nagasaki by month

In Nagasaki, the months July through October offer comfortable swimming conditions, which amounts to 137 swimming days.
The warmest water in Nagasaki was recorded on August 5, 2024, reaching a 88.0°F. While the coldest temperature occurred on February 27, 2025, dipping to 54.7°F. The average readings by season are 60.8°F in Winter, 62.7°F in Spring, 78.8°F in Summer, and 75.6°F in Autumn.