Galveston in September
Find out everything about the water temperature in Galveston 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:
79.3 °F
Average:
84.4 °F
Maximum:
88.3 °F
Sea water temperature in Galveston in September
In the city of Galveston, the month of September is a great time for swimming. The minimum recorded temperature during this month was 79.3°F on September 30, 2020, with an average temperature being 84.4°F and a maximum temperature reaching 88.3°F on September 8, 2023.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Sep 1 | 85.9°F | 86.0°F | 87.7°F |
| Sep 2 | 85.9°F | 85.6°F | 87.4°F |
| Sep 3 | 85.7°F | 85.4°F | 87.3°F |
| Sep 4 | 85.8°F | 85.3°F | 88.1°F |
| Sep 5 | 85.8°F | 85.3°F | 87.8°F |
| Sep 6 | 85.6°F | 84.8°F | 87.8°F |
| Sep 7 | 85.6°F | 84.7°F | 87.4°F |
| Sep 8 | 85.5°F | 82.6°F | 88.3°F |
| Sep 9 | 85.2°F | 80.6°F | 88.1°F |
| Sep 10 | 85.2°F | 80.9°F | 87.9°F |
| Sep 11 | 84.9°F | 81.1°F | 87.6°F |
| Sep 12 | 84.6°F | 79.9°F | 87.2°F |
| Sep 13 | 84.5°F | 80.8°F | 86.8°F |
| Sep 14 | 84.3°F | 81.6°F | 86.7°F |
| Sep 15 | 84.2°F | 82.2°F | 86.1°F |
| Sep 16 | 84.0°F | 83.5°F | 86.1°F |
| Sep 17 | 83.8°F | 82.9°F | 85.4°F |
| Sep 18 | 84.1°F | 84.1°F | 85.1°F |
| Sep 19 | 84.0°F | 84.2°F | 85.4°F |
| Sep 20 | 84.1°F | 84.8°F | 85.2°F |
| Sep 21 | 84.2°F | 84.9°F | 85.0°F |
| Sep 22 | 84.3°F | 85.7°F | 84.9°F |
| Sep 23 | 84.3°F | 85.3°F | 85.9°F |
| Sep 24 | 84.1°F | 85.1°F | 86.1°F |
| Sep 25 | 83.7°F | 85.3°F | 85.8°F |
| Sep 26 | 83.5°F | 84.9°F | 85.1°F |
| Sep 27 | 83.0°F | 84.5°F | 85.1°F |
| Sep 28 | 82.7°F | 83.2°F | 85.3°F |
| Sep 29 | 82.7°F | 82.9°F | 86.4°F |
| Sep 30 | 82.2°F | 83.0°F | 85.8°F |
In Galveston, the months May through October offer comfortable swimming conditions, which amounts to 191 swimming days.
The warmest water in Galveston was recorded on August 18, 2024, reaching a 90.5°F. While the coldest temperature occurred on January 23, 2024, dipping to 51.4°F. The average readings by season are 60.0°F in Winter, 71.3°F in Spring, 85.5°F in Summer, and 77.6°F in Autumn.
September's average temperature is a slight drop from August's average of 86.8°F. In October, the temperature is expected to decrease further, potentially averaging around 78.5°F.