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Yonago in September

Find out everything about the water temperature in Yonago in September. Average, minimum and maximum recorded temperatures as well as daily temperature in September for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in September
Minimum:

72.7 °F

Average:

78.9 °F

Maximum:

86.9 °F

Sea water temperature in Yonago in September

In the city of Yonago, the month of September is a great time for swimming. The minimum recorded temperature during this month was 72.7°F on September 30, 2022, with an average temperature being 78.9°F and a maximum temperature reaching 86.9°F on September 2, 2025.

The watter temperature range during this month provides a satisfying and enjoyable experience in the water. Throughout the month of September, the sea temperature gradually gets colder. Starting with an average temperature of 80.7°F at the beginning of the month, it steadily decreases to around 76.7°F by the end.
Date 10 years average 2025 2024
Sep 1 81.5°F 86.6°F 83.3°F
Sep 2 81.2°F 86.9°F 82.5°F
Sep 3 80.9°F 86.2°F 82.0°F
Sep 4 80.7°F 85.5°F 81.4°F
Sep 5 80.7°F 85.4°F 81.8°F
Sep 6 80.5°F 85.1°F 81.9°F
Sep 7 80.6°F 85.7°F 82.2°F
Sep 8 80.3°F 85.4°F 82.3°F
Sep 9 80.1°F 85.2°F 82.6°F
Sep 10 80.0°F 84.6°F 82.0°F
Sep 11 80.0°F 84.3°F 82.8°F
Sep 12 79.8°F 84.1°F 82.6°F
Sep 13 79.7°F 83.7°F 83.4°F
Sep 14 79.6°F 83.4°F 83.4°F
Sep 15 79.4°F 83.0°F 83.5°F
Sep 16 79.3°F 82.9°F 83.1°F
Sep 17 79.4°F 84.2°F 83.9°F
Sep 18 79.3°F 84.1°F 83.9°F
Sep 19 79.0°F 83.5°F 84.9°F
Sep 20 78.7°F 83.0°F 84.8°F
Sep 21 78.5°F 82.3°F 85.2°F
Sep 22 78.0°F 81.3°F 84.3°F
Sep 23 77.5°F 80.6°F 83.4°F
Sep 24 77.0°F 79.9°F 82.3°F
Sep 25 76.6°F 79.3°F 81.5°F
Sep 26 76.4°F 78.7°F 80.9°F
Sep 27 76.0°F 78.2°F 80.2°F
Sep 28 75.9°F 77.8°F 80.8°F
Sep 29 75.8°F 77.5°F 78.9°F
Sep 30 75.6°F 78.0°F 79.1°F

Sea water temperature in Yonago by month

In Yonago, the months July through September offer comfortable swimming conditions, which amounts to 104 swimming days. The warmest water in Yonago was recorded on September 2, 2025, reaching a 86.9°F. While the coldest temperature occurred on March 1, 2025, dipping to 50.3°F. The average readings by season are 57.7°F in Winter, 58.4°F in Spring, 77.3°F in Summer, and 72.7°F in Autumn. September's average temperature is a slight drop from August's average of 82.8°F. In October, the temperature is expected to decrease further, potentially averaging around 72.3°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
Kurashiki 80.3°F 64mi
Okayama 78.9°F 64mi
Fukuyama 78.8°F 66mi

* current water temperature in this city

** straight line distance from Yonago