Water temperature in Isumi
68.3
°F
May 18, 20:36
Trend:
increasingYesterday:
67.1°FTomorrow:
68.8°F
Sunrise:
Sunset:
Day Length:
14 h. 4 min.Isumi in May
Minimum:
56.8°FAverage:
61.9°FMaximum:
66.3°FSea water temperature in Isumi today
As of now, in Isumi, the water temperature is 68.3°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 3.5°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable 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 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 65.5°F on 2024, while the historical minimum was 63.5°F on 2017.
Daily water temperature in Isumi
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| May 4 | 66.7°F | 61.2°F | 62.7°F |
| May 5 | 64.0°F | 60.9°F | 62.5°F |
| May 6 | 63.3°F | 61.5°F | 62.7°F |
| May 7 | 64.0°F | 62.3°F | 63.2°F |
| May 8 | 65.4°F | 61.4°F | 63.4°F |
| May 9 | 60.5°F | 62.8°F | 63.2°F |
| May 10 | 62.3°F | 63.4°F | 63.8°F |
| May 11 | 62.5°F | 64.0°F | 64.4°F |
| May 12 | 60.3°F | 63.4°F | 63.8°F |
| May 13 | 62.5°F | 63.4°F | 63.8°F |
| May 14 | 63.6°F | 62.9°F | 63.8°F |
| May 15 | 64.5°F | 64.1°F | 64.3°F |
| May 16 | 65.9°F | 64.6°F | 64.7°F |
| May 17 | 67.1°F | 64.9°F | 64.8°F |
| May 18 | 68.3°F | 65.4°F | 64.8°F |
| May 19 | 68.8°F | 65.6°F | 65.2°F |
| May 20 | 68.7°F | 63.2°F | 65.2°F |
| May 21 | 69.2°F | 65.9°F | 65.7°F |
| May 22 | 69.5°F | 65.9°F | 66.0°F |
| May 23 | 69.9°F | 66.1°F | 66.4°F |
| May 24 | 70.4°F | 66.1°F | 66.8°F |
| May 25 | 70.3°F | 66.2°F | 66.7°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** |
|---|---|---|
| Katsuura |
71.9°F
|
8mi |
| Ichihara |
68.3°F
|
27mi |
| Kisarazu |
67.8°F
|
29mi |
| Chiba |
68.5°F
|
30mi |
| Kimitsu |
68.1°F
|
31mi |
| Futtsu |
67.7°F
|
34mi |
| Honchō |
70.6°F
|
40mi |
| Yokosuka |
68.3°F
|
42mi |
| Kawasaki |
70.5°F
|
44mi |
| Yokohama |
70.1°F
|
45mi |
* current water temperature in this city
** straight line distance from Isumi