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

86.4

°F

August 24, 02:25

Trend:

decreasing

Yesterday:

86.5°F

Tomorrow:

86.3°F

Sunrise:

05:34

Sunset:

18:44

Day Length:

13 h. 10 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 86.4°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 2.1°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 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 86.8°F on 2024, while the historical minimum was 81.7°F on 2021.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 86.3°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Niihama

Date Current Year

actual* / forecast**

last year 10 years average
Aug 10 86.0°F 84.5°F 83.5°F
Aug 11 85.9°F 84.5°F 83.6°F
Aug 12 83.8°F 83.8°F 83.5°F
Aug 13 83.9°F 83.7°F 83.9°F
Aug 14 82.9°F 84.8°F 84.0°F
Aug 15 82.4°F 85.2°F 84.4°F
Aug 16 83.3°F 85.3°F 84.4°F
Aug 17 83.6°F 85.9°F 84.3°F
Aug 18 83.4°F 85.5°F 83.9°F
Aug 19 84.2°F 86.2°F 83.9°F
Aug 20 85.2°F 85.8°F 84.0°F
Aug 21 84.6°F 85.4°F 84.2°F
Aug 22 84.7°F 86.3°F 84.5°F
Aug 23 86.5°F 85.6°F 84.4°F
Aug 24 86.4°F 85.6°F 84.3°F
Aug 25 86.3°F 85.5°F 84.2°F
Aug 26 86.5°F 85.2°F 84.5°F
Aug 27 86.3°F 85.6°F 84.2°F
Aug 28 86.3°F 85.9°F 84.2°F
Aug 29 86.3°F 86.1°F 84.2°F
Aug 30 86.3°F 86.7°F 84.2°F
Aug 31 86.1°F 86.1°F 84.0°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 86.1°F 8mi
Matsuyama 80.3°F 32mi
Marugame 84.2°F 35mi
Fukuyama 86.5°F 36mi
Takamatsu 83.2°F 50mi
Kurashiki 85.7°F 50mi
Hiroshima 83.4°F 58mi
Okayama 85.4°F 60mi

* current water temperature in this city

** straight line distance from Niihama