All data are in degrees Fahrenheit

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Water temperature in Ōita

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

77.8

°F

September 13, 01:59

Trend:

decreasing

Yesterday:

77.9°F

Tomorrow:

77.7°F

Sunrise:

05:55

Sunset:

18:24

Day Length:

12 h. 29 min.

Ōita in September

Minimum:

57.6°F

Average:

59.2°F

Maximum:

60.7°F

Sea water temperature in Ōita today

As of now, in Ōita, the water temperature is 77.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.2°F lower 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 minimum temperature for this date. The maximum temperature recorded for this date was 82.7°F on 2024, while the historical minimum was 76.7°F on 2018.

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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 77.0°F, the minimum temperature may reach 76.1°F, and the maximum might stay at 77.7°F.

Daily water temperature in Ōita

Date Current Year

actual* / forecast**

last year 10 years average
Aug 30 84.2°F 84.5°F 81.8°F
Aug 31 84.4°F 84.6°F 81.7°F
Sep 1 84.0°F 83.7°F 81.3°F
Sep 2 82.9°F 84.3°F 81.1°F
Sep 3 80.9°F 83.5°F 80.7°F
Sep 4 81.0°F 82.2°F 80.5°F
Sep 5 80.2°F 81.4°F 80.3°F
Sep 6 80.0°F 81.1°F 80.1°F
Sep 7 79.4°F 81.6°F 80.1°F
Sep 8 79.3°F 82.7°F 79.9°F
Sep 9 78.9°F 82.6°F 79.6°F
Sep 10 78.7°F 82.1°F 79.8°F
Sep 11 78.1°F 83.5°F 79.9°F
Sep 12 77.9°F 83.8°F 80.1°F
Sep 13 77.8°F 82.7°F 80.0°F
Sep 14 77.7°F 82.6°F 79.9°F
Sep 15 77.4°F 82.5°F 79.6°F
Sep 16 77.4°F 82.3°F 79.6°F
Sep 17 77.2°F 82.5°F 79.4°F
Sep 18 77.0°F 82.2°F 79.2°F
Sep 19 76.6°F 81.7°F 78.8°F
Sep 20 76.1°F 81.6°F 78.3°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 Ōita by month

In Ōita, the months July through October offer comfortable swimming conditions, which amounts to 117 swimming days.
The warmest water in Ōita was recorded on August 5, 2024, reaching a 87.4°F. While the coldest temperature occurred on March 26, 2025, dipping to 49.6°F. The average readings by season are 59.2°F in Winter, 59.5°F in Spring, 76.9°F in Summer, and 74.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Beppu 78.0°F 7mi
Kumamoto 80.6°F 60mi
Kitakyushu 81.4°F 61mi
Shimonoseki 80.3°F 63mi
Iwakuni 78.2°F 73mi

* current water temperature in this city

** straight line distance from Ōita