Water temperature in Niihama
83.5
°F
July 15, 15:39
Trend:
increasingYesterday:
83.4°FTomorrow:
83.8°F
Sunrise:
Sunset:
Day Length:
14 h. 13 min.Niihama in July
Minimum:
54.0°FAverage:
56.0°FMaximum:
57.8°FSea water temperature in Niihama today
As of now, in Niihama, the water temperature is 83.5°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 3.6°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 rise 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 81.7°F on 2025, while the historical minimum was 77.0°F on 2019.
Daily water temperature in Niihama
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jul 1 | 70.8°F | 82.6°F | 76.2°F |
| Jul 2 | 71.4°F | 82.8°F | 76.6°F |
| Jul 3 | 71.0°F | 81.9°F | 76.8°F |
| Jul 4 | 71.5°F | 84.1°F | 77.4°F |
| Jul 5 | 72.9°F | 83.0°F | 77.6°F |
| Jul 6 | 73.3°F | 83.3°F | 78.2°F |
| Jul 7 | 74.9°F | 81.6°F | 78.4°F |
| Jul 8 | 73.4°F | 84.3°F | 78.6°F |
| Jul 9 | 76.0°F | 82.9°F | 78.5°F |
| 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 | 79.8°F |
| Jul 15 | 83.5°F | 81.7°F | 79.9°F |
| Jul 16 | 83.8°F | 79.9°F | 80.2°F |
| Jul 17 | 83.8°F | 79.8°F | 80.2°F |
| Jul 18 | 83.9°F | 79.8°F | 80.3°F |
| Jul 19 | 84.0°F | 79.4°F | 80.4°F |
| Jul 20 | 84.8°F | 80.5°F | 81.2°F |
| Jul 21 | 85.0°F | 81.8°F | 81.4°F |
| Jul 22 | 85.7°F | 82.9°F | 82.1°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 |
80.7°F
|
8mi |
| Matsuyama |
77.7°F
|
32mi |
| Marugame |
77.7°F
|
35mi |
| Fukuyama |
80.6°F
|
36mi |
| Takamatsu |
76.9°F
|
50mi |
| Kurashiki |
78.6°F
|
50mi |
| Hiroshima |
81.9°F
|
58mi |
| Okayama |
78.7°F
|
60mi |
* current water temperature in this city
** straight line distance from Niihama