Isumi in January
Find out everything about the water temperature in Isumi in January. Average, minimum and maximum recorded temperatures as well as daily temperature in January for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in January
Minimum:
56.5 °F
Average:
61.4 °F
Maximum:
66.8 °F
Sea water temperature in Isumi in January
In the city of Isumi, the month of January is somewhat too cool for swimming. The minimum recorded temperature during this month was 56.5°F on January 14, 2022, with an average temperature being 61.4°F and a maximum temperature reaching 66.8°F on January 3, 2020.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Jan 1 | 62.9°F | 62.2°F | 64.0°F |
| Jan 2 | 63.0°F | 62.9°F | 64.4°F |
| Jan 3 | 62.8°F | 61.0°F | 63.5°F |
| Jan 4 | 62.5°F | 61.1°F | 61.3°F |
| Jan 5 | 62.1°F | 59.6°F | 60.6°F |
| Jan 6 | 62.5°F | 62.5°F | 61.1°F |
| Jan 7 | 62.2°F | 61.2°F | 61.3°F |
| Jan 8 | 62.2°F | 60.9°F | 61.6°F |
| Jan 9 | 62.3°F | 64.9°F | 61.6°F |
| Jan 10 | 62.3°F | 65.4°F | 60.0°F |
| Jan 11 | 62.3°F | 64.7°F | 58.4°F |
| Jan 12 | 61.4°F | 64.2°F | 56.7°F |
| Jan 13 | 61.6°F | 64.2°F | 57.3°F |
| Jan 14 | 61.6°F | 63.4°F | 58.2°F |
| Jan 15 | 61.2°F | 62.2°F | 58.6°F |
| Jan 16 | 61.1°F | 61.2°F | 58.9°F |
| Jan 17 | 61.2°F | 58.9°F | 59.6°F |
| Jan 18 | 61.4°F | 61.4°F | 59.9°F |
| Jan 19 | 61.0°F | 61.4°F | 60.8°F |
| Jan 20 | 61.0°F | 63.0°F | 60.6°F |
| Jan 21 | 60.7°F | 62.7°F | 61.3°F |
| Jan 22 | 60.6°F | 60.7°F | 60.4°F |
| Jan 23 | 60.5°F | 60.7°F | 60.2°F |
| Jan 24 | 60.5°F | 60.5°F | 60.3°F |
| Jan 25 | 60.1°F | 59.1°F | 58.5°F |
| Jan 26 | 60.5°F | 61.6°F | 58.9°F |
| Jan 27 | 60.5°F | 61.0°F | 59.0°F |
| Jan 28 | 60.6°F | 61.4°F | 56.9°F |
| Jan 29 | 60.7°F | 61.4°F | 59.4°F |
| Jan 30 | 61.2°F | 62.0°F | 62.0°F |
| Jan 31 | 60.5°F | 60.5°F | 59.2°F |
In Isumi, the months July through October offer comfortable swimming conditions, which amounts to 102 swimming days.
The warmest water in Isumi was recorded on August 17, 2024, reaching a 82.8°F. While the coldest temperature occurred on February 18, 2018, dipping to 56.0°F. The average readings by season are 62.0°F in Winter, 62.0°F in Spring, 74.0°F in Summer, and 73.8°F in Autumn.
January's average temperature is a slight drop from December's average of 65.0°F. In February, the temperature is expected to decrease further, potentially averaging around 59.6°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Katsuura |
63.4°F
|
8mi |
| Ichihara |
56.3°F
|
27mi |
| Kisarazu |
59.0°F
|
29mi |
| Chiba |
56.1°F
|
30mi |
| Kimitsu |
58.9°F
|
31mi |
| Futtsu |
59.8°F
|
34mi |
| Honchō |
55.7°F
|
40mi |
| Yokosuka |
60.9°F
|
42mi |
| Kawasaki |
58.0°F
|
44mi |
| Yokohama |
59.6°F
|
45mi |
* current water temperature in this city
** straight line distance from Isumi