All data are in degrees Fahrenheit

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Water temperature in Niihama

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

86.3

°F

August 8, 21:52

Trend:

decreasing

Yesterday:

87.5°F

Tomorrow:

85.9°F

Sunrise:

05:23

Sunset:

19:02

Day Length:

13 h. 39 min.

Niihama in August

Minimum:

53.3°F

Average:

55.7°F

Maximum:

57.6°F

Sea water temperature in Niihama today

As of now, in Niihama, the water temperature is 86.3°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 1.9°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 fall a bit.

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 87.5°F on 2024, while the historical minimum was 82.2°F on 2020.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 85.7°F, the minimum temperature may reach 85.1°F, and the maximum might stay at 86.5°F.

Daily water temperature in Niihama

Date Current Year

actual* / forecast**

last year 10 years average
Jul 25 88.0°F 83.9°F 82.8°F
Jul 26 87.5°F 84.2°F 83.1°F
Jul 27 87.4°F 84.0°F 83.2°F
Jul 28 88.8°F 82.2°F 83.7°F
Jul 29 88.2°F 83.2°F 84.1°F
Jul 30 87.1°F 83.6°F 83.8°F
Jul 31 87.1°F 84.2°F 83.9°F
Aug 1 87.0°F 83.2°F 83.9°F
Aug 2 87.4°F 82.8°F 84.3°F
Aug 3 87.8°F 85.9°F 84.9°F
Aug 4 88.6°F 85.6°F 85.0°F
Aug 5 87.6°F 84.8°F 84.7°F
Aug 6 87.7°F 87.3°F 85.1°F
Aug 7 87.5°F 87.0°F 85.0°F
Aug 8 86.3°F 85.6°F 84.5°F
Aug 9 85.9°F 85.2°F 84.1°F
Aug 10 85.1°F 84.3°F 83.2°F
Aug 11 85.2°F 84.4°F 83.3°F
Aug 12 85.3°F 83.8°F 83.4°F
Aug 13 85.8°F 83.7°F 83.9°F
Aug 14 86.1°F 84.8°F 84.2°F
Aug 15 86.5°F 85.2°F 84.6°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 Niihama by month

In Niihama, the months July through October offer comfortable swimming conditions, which amounts to 124 swimming days.
The warmest water in Niihama was recorded on August 3, 2024, reaching a 88.8°F. While the coldest temperature occurred on February 26, 2022, dipping to 48.0°F. The average readings by season are 55.9°F in Winter, 58.7°F in Spring, 78.9°F in Summer, and 75.1°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Saijō 85.6°F 8mi
Matsuyama 77.8°F 32mi
Marugame 83.2°F 35mi
Fukuyama 84.3°F 36mi
Takamatsu 82.8°F 50mi
Kurashiki 84.6°F 50mi
Hiroshima 84.3°F 58mi
Okayama 84.5°F 60mi

* current water temperature in this city

** straight line distance from Niihama