Water temperature in Niihama
71.9
°F
June 30, 10:29
Trend:
increasingYesterday:
71.2°FTomorrow:
72.4°F
Sunrise:
Sunset:
Day Length:
14 h. 24 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 71.9°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 4.3°F lower 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 rise a bit.Recent sea temperature and forecast
Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 80.7°F on 2025, while the historical minimum was 73.2°F on 2016.
Daily water temperature in Niihama
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jun 16 | 71.4°F | 70.0°F | 71.9°F |
| Jun 17 | 73.7°F | 71.9°F | 72.5°F |
| Jun 18 | 73.3°F | 74.9°F | 72.8°F |
| Jun 19 | 74.2°F | 74.6°F | 72.9°F |
| Jun 20 | 73.9°F | 75.8°F | 73.0°F |
| Jun 21 | 73.3°F | 75.4°F | 73.0°F |
| Jun 22 | 72.2°F | 73.9°F | 73.1°F |
| Jun 23 | 72.6°F | 74.0°F | 73.3°F |
| Jun 24 | 72.3°F | 73.9°F | 73.7°F |
| Jun 25 | 71.9°F | 73.9°F | 73.7°F |
| Jun 26 | 73.0°F | 76.3°F | 74.2°F |
| Jun 27 | 72.2°F | 77.1°F | 74.3°F |
| Jun 28 | 73.2°F | 77.3°F | 74.6°F |
| Jun 29 | 71.2°F | 79.9°F | 75.6°F |
| Jun 30 | 71.9°F | 80.7°F | 76.2°F |
| Jul 1 | 72.4°F | 82.6°F | 76.7°F |
| Jul 2 | 72.8°F | 82.8°F | 77.1°F |
| Jul 3 | 73.0°F | 81.9°F | 77.4°F |
| Jul 4 | 73.7°F | 84.1°F | 78.0°F |
| Jul 5 | 73.8°F | 83.0°F | 78.1°F |
| Jul 6 | 74.4°F | 83.3°F | 78.7°F |
| Jul 7 | 74.4°F | 81.6°F | 78.7°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 |
71.3°F
|
8mi |
| Matsuyama |
69.8°F
|
32mi |
| Marugame |
71.1°F
|
35mi |
| Fukuyama |
70.4°F
|
36mi |
| Takamatsu |
71.4°F
|
50mi |
| Kurashiki |
71.4°F
|
50mi |
| Hiroshima |
70.2°F
|
58mi |
| Okayama |
72.0°F
|
60mi |
* current water temperature in this city
** straight line distance from Niihama