All data are in degrees Fahrenheit

en

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

70.0

°F

November 21, 02:21

Trend:

decreasing

Yesterday:

70.3°F

Tomorrow:

69.9°F

Sunrise:

06:55

Sunset:

17:17

Day Length:

10 h. 22 min.

Nagasaki in November

Minimum:

59.2°F

Average:

60.4°F

Maximum:

62.5°F

Sea water temperature in Nagasaki today

As of now, in Nagasaki, the water temperature is 70.0°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.2°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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 70.7°F on 2024, while the historical minimum was 67.5°F on 2022.

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 shows a gradual cooling trend. The average temperature is expected to be 69.2°F, the minimum temperature may reach 68.8°F, and the maximum might stay at 69.9°F.

Daily water temperature in Nagasaki

Date Current Year

actual* / forecast**

last year 10 years average
Nov 7 73.0°F 73.2°F 71.4°F
Nov 8 71.8°F 73.1°F 71.0°F
Nov 9 71.6°F 72.8°F 70.7°F
Nov 10 71.5°F 72.7°F 70.6°F
Nov 11 73.0°F 72.8°F 70.8°F
Nov 12 72.7°F 72.4°F 70.3°F
Nov 13 72.4°F 72.3°F 70.3°F
Nov 14 70.6°F 72.0°F 69.9°F
Nov 15 70.2°F 71.6°F 69.9°F
Nov 16 69.6°F 71.4°F 69.7°F
Nov 17 70.4°F 72.3°F 69.7°F
Nov 18 70.6°F 72.2°F 69.5°F
Nov 19 70.4°F 71.7°F 69.4°F
Nov 20 70.3°F 70.9°F 69.0°F
Nov 21 70.0°F 70.7°F 68.7°F
Nov 22 69.9°F 70.9°F 68.6°F
Nov 23 69.7°F 70.6°F 68.5°F
Nov 24 69.3°F 69.2°F 68.0°F
Nov 25 69.0°F 69.5°F 67.8°F
Nov 26 69.0°F 69.4°F 67.7°F
Nov 27 68.8°F 69.2°F 67.6°F
Nov 28 68.9°F 69.0°F 67.7°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 133 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 60.7°F in Winter, 62.5°F in Spring, 78.5°F in Summer, and 75.4°F in Autumn.