Water temperature in Niihama
85.2
°F
August 30, 04:34
Trend:
stableYesterday:
85.2°FTomorrow:
85.0°F
Sunrise:
Sunset:
Day Length:
12 h. 58 min.Niihama in September
Minimum:
52.9°FAverage:
55.5°FMaximum:
57.8°FSea water temperature in Niihama today
As of now, in Niihama, the water temperature is 85.2°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 1.0°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 closely matches the previous two weeks' average, indicating a stable trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 86.7°F on 2025, while the historical minimum was 81.7°F on 2019.
Daily water temperature in Niihama
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| 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 | 84.5°F |
| Aug 24 | 86.7°F | 85.6°F | 84.5°F |
| Aug 25 | 87.3°F | 85.5°F | 84.5°F |
| Aug 26 | 87.4°F | 85.2°F | 84.7°F |
| Aug 27 | 87.7°F | 85.6°F | 84.5°F |
| Aug 28 | 85.6°F | 85.9°F | 84.3°F |
| Aug 29 | 85.2°F | 86.1°F | 84.2°F |
| Aug 30 | 85.2°F | 86.7°F | 84.2°F |
| Aug 31 | 85.0°F | 86.1°F | 84.0°F |
| Sep 1 | 84.9°F | 86.2°F | 83.9°F |
| Sep 2 | 84.7°F | 88.0°F | 83.7°F |
| Sep 3 | 84.5°F | 87.5°F | 83.5°F |
| Sep 4 | 84.3°F | 87.0°F | 83.3°F |
| Sep 5 | 84.1°F | 86.0°F | 83.1°F |
| Sep 6 | 83.9°F | 85.3°F | 82.9°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.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Saijō |
85.6°F
|
8mi |
| Matsuyama |
81.2°F
|
32mi |
| Marugame |
85.1°F
|
35mi |
| Fukuyama |
86.4°F
|
36mi |
| Takamatsu |
84.6°F
|
50mi |
| Kurashiki |
84.9°F
|
50mi |
| Hiroshima |
82.6°F
|
58mi |
| Okayama |
85.2°F
|
60mi |
* current water temperature in this city
** straight line distance from Niihama