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

86.6

°F

July 24, 20:16

Trend:

stable

Yesterday:

85.9°F

Tomorrow:

86.5°F

Sunrise:

05:12

Sunset:

19:14

Day Length:

14 h. 2 min.

Niihama in July

Minimum:

54.0°F

Average:

56.0°F

Maximum:

57.8°F

Sea water temperature in Niihama today

As of now, in Niihama, the water temperature is 86.6°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 4.2°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. 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 85.7°F on 2024, while the historical minimum was 77.8°F on 2019.

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 suggests a gradual increase. The average temperature is expected to rise up to 87.3°F, with minimum temperature starting at 86.5°F, while the maximum might reach 87.9°F.

Daily water temperature in Niihama

Date Current Year

actual* / forecast**

last year 10 years average
Jul 10 78.4°F 84.3°F 78.9°F
Jul 11 80.0°F 84.4°F 79.3°F
Jul 12 79.7°F 83.5°F 79.2°F
Jul 13 80.0°F 83.6°F 79.4°F
Jul 14 83.4°F 83.2°F 80.2°F
Jul 15 83.7°F 81.7°F 80.2°F
Jul 16 83.5°F 79.9°F 80.5°F
Jul 17 85.3°F 79.8°F 80.6°F
Jul 18 84.6°F 79.8°F 80.7°F
Jul 19 85.7°F 79.4°F 80.9°F
Jul 20 86.4°F 80.5°F 81.7°F
Jul 21 86.4°F 81.8°F 81.9°F
Jul 22 85.4°F 82.9°F 82.4°F
Jul 23 85.9°F 84.6°F 82.3°F
Jul 24 86.6°F 84.7°F 82.4°F
Jul 25 86.5°F 83.9°F 82.3°F
Jul 26 86.9°F 84.2°F 82.7°F
Jul 27 87.0°F 84.0°F 82.8°F
Jul 28 87.4°F 82.2°F 83.2°F
Jul 29 87.9°F 83.2°F 83.7°F
Jul 30 87.7°F 83.6°F 83.4°F
Jul 31 87.8°F 84.2°F 83.6°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, 78.8°F in Summer, and 75.1°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Saijō 86.8°F 8mi
Matsuyama 79.6°F 32mi
Marugame 82.5°F 35mi
Fukuyama 82.8°F 36mi
Takamatsu 79.9°F 50mi
Kurashiki 83.6°F 50mi
Hiroshima 84.8°F 58mi
Okayama 84.2°F 60mi

* current water temperature in this city

** straight line distance from Niihama