Saint Lucia Estuary in September
Find out everything about the water temperature in Saint Lucia Estuary 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:
69.5 °F
Average:
71.8 °F
Maximum:
74.5 °F
Sea water temperature in Saint Lucia Estuary in September
In the city of Saint Lucia Estuary, the month of September is somewhat comfortable for swimming. The minimum recorded temperature during this month was 69.5°F on September 15, 2021, with an average temperature being 71.8°F and a maximum temperature reaching 74.5°F on September 28, 2016.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Sep 1 | 71.4°F | 71.2°F | 71.3°F |
| Sep 2 | 71.1°F | 71.0°F | 70.4°F |
| Sep 3 | 71.3°F | 71.2°F | 71.5°F |
| Sep 4 | 71.4°F | 71.4°F | 71.0°F |
| Sep 5 | 71.5°F | 71.3°F | 71.1°F |
| Sep 6 | 71.7°F | 71.2°F | 72.1°F |
| Sep 7 | 71.7°F | 71.3°F | 71.0°F |
| Sep 8 | 71.8°F | 71.9°F | 71.4°F |
| Sep 9 | 71.8°F | 72.7°F | 70.9°F |
| Sep 10 | 71.6°F | 72.9°F | 70.6°F |
| Sep 11 | 71.7°F | 72.8°F | 70.1°F |
| Sep 12 | 71.8°F | 72.6°F | 70.4°F |
| Sep 13 | 71.4°F | 71.5°F | 70.6°F |
| Sep 14 | 71.7°F | 72.1°F | 72.4°F |
| Sep 15 | 71.7°F | 71.7°F | 72.5°F |
| Sep 16 | 71.7°F | 71.9°F | 72.9°F |
| Sep 17 | 71.7°F | 71.9°F | 72.6°F |
| Sep 18 | 71.6°F | 72.4°F | 72.5°F |
| Sep 19 | 71.6°F | 71.5°F | 72.3°F |
| Sep 20 | 71.6°F | 71.6°F | 71.9°F |
| Sep 21 | 71.7°F | 71.7°F | 71.4°F |
| Sep 22 | 71.9°F | 71.8°F | 71.5°F |
| Sep 23 | 72.2°F | 72.1°F | 72.2°F |
| Sep 24 | 72.4°F | 72.5°F | 72.6°F |
| Sep 25 | 72.4°F | 72.2°F | 72.4°F |
| Sep 26 | 72.5°F | 71.9°F | 72.3°F |
| Sep 27 | 72.4°F | 71.5°F | 72.2°F |
| Sep 28 | 72.6°F | 71.8°F | 72.1°F |
| Sep 29 | 72.4°F | 71.2°F | 72.1°F |
| Sep 30 | 72.5°F | 71.1°F | 72.7°F |
In Saint Lucia Estuary, the months November through June offer comfortable swimming conditions, which amounts to 242 swimming days.
The warmest water in Saint Lucia Estuary was recorded on February 20, 2017, reaching a 83.0°F. While the coldest temperature occurred on July 5, 2025, dipping to 67.9°F. The average readings by season are 79.3°F in Winter, 78.4°F in Spring, 72.6°F in Summer, and 73.4°F in Autumn.
The average temperature in September is slightly warmer than August's average of 71.6°F. And in October, the temperature is expected to rise further, potentially reaching an average of 73.1°F.