Katsuura in July
Find out everything about the water temperature in Katsuura in July. Average, minimum and maximum recorded temperatures as well as daily temperature in July for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in July
Minimum:
68.1 °F
Average:
75.4 °F
Maximum:
82.2 °F
Sea water temperature in Katsuura in July
In the city of Katsuura, the month of July is a great time for swimming. The minimum recorded temperature during this month was 68.1°F on July 1, 2024, with an average temperature being 75.4°F and a maximum temperature reaching 82.2°F on July 23, 2025.
| Date | 10 years average | 2026 | 2025 |
|---|---|---|---|
| Jul 1 | 72.1°F | 72.0°F | 74.8°F |
| Jul 2 | 72.2°F | 72.6°F | 76.0°F |
| Jul 3 | 72.8°F | 72.5°F | 74.7°F |
| Jul 4 | 73.1°F | 72.7°F | 76.1°F |
| Jul 5 | 73.4°F | 72.9°F | 75.9°F |
| Jul 6 | 73.7°F | 73.2°F | 76.0°F |
| Jul 7 | 73.9°F | 72.8°F | 79.3°F |
| Jul 8 | 74.2°F | 73.5°F | 79.6°F |
| Jul 9 | 74.6°F | 75.7°F | 80.7°F |
| Jul 10 | 74.3°F | 76.2°F | 80.5°F |
| Jul 11 | 74.8°F | 76.6°F | 80.2°F |
| Jul 12 | 74.8°F | 76.2°F | 80.3°F |
| Jul 13 | 75.1°F | 76.3°F | 80.8°F |
| Jul 14 | 75.2°F | 77.4°F | 80.2°F |
| Jul 15 | 75.7°F | 78.3°F | 80.0°F |
| Jul 16 | 75.6°F | 77.1°F | 79.7°F |
| Jul 17 | 75.5°F | 79.5°F | 78.3°F |
| Jul 18 | 75.8°F | 78.7°F | 79.8°F |
| Jul 19 | 76.0°F | 77.2°F | 79.5°F |
| Jul 20 | 76.2°F | 77.1°F | 81.4°F |
| Jul 21 | 76.1°F | 77.9°F | 81.5°F |
| Jul 22 | 76.8°F | 78.0°F | 81.3°F |
| Jul 23 | 76.6°F | 78.4°F | 82.2°F |
| Jul 24 | 77.2°F | 79.8°F | 82.1°F |
| Jul 25 | 77.4°F | 80.5°F | 80.9°F |
| Jul 26 | 77.2°F | 80.1°F | 78.3°F |
| Jul 27 | 77.2°F | 77.0°F | 77.2°F |
| Jul 28 | 77.3°F | 78.7°F | 79.0°F |
| Jul 29 | 77.5°F | 80.5°F | 80.0°F |
| Jul 30 | 77.6°F | 80.2°F | 80.2°F |
| Jul 31 | 77.7°F | 80.2°F | 81.2°F |
In Katsuura, the months July through October offer comfortable swimming conditions, which amounts to 118 swimming days.
The warmest water in Katsuura was recorded on September 16, 2024, reaching a 83.3°F. While the coldest temperature occurred on April 16, 2025, dipping to 56.7°F. The average readings by season are 63.3°F in Winter, 62.8°F in Spring, 75.0°F in Summer, and 75.1°F in Autumn.
The average temperature in July is slightly warmer than June's average of 70.2°F. And in August, the temperature is expected to rise further, potentially reaching an average of 79.3°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Isumi |
78.7°F
|
8mi |
| Kisarazu |
79.2°F
|
27mi |
| Ichihara |
79.7°F
|
29mi |
| Kimitsu |
79.5°F
|
29mi |
| Futtsu |
79.3°F
|
30mi |
| Chiba |
79.6°F
|
33mi |
| Yokosuka |
79.9°F
|
38mi |
| Yokohama |
82.5°F
|
42mi |
| Kawasaki |
82.7°F
|
42mi |
| Honchō |
79.5°F
|
43mi |
* current water temperature in this city
** straight line distance from Katsuura