Weather in September
In September, the sea temperature reaches a high of 85°F (29.4°C) in the Virgin Islands National Park, maintaining the trend from the previous month. Despite the high temperatures, the park’s diverse species continue to thrive. As the foliage turns deeper shades of green, the contrasting blues of the sea make for scenic views. A variety of outdoor activities remain inviting, captivated by the park’s natural charm.
Note: Swimming, diving, and other activities in water temperatures between 77°F (25°C) and 84.2°F (29°C) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.
On the first day of the month, sunrise is at 6:04 am and sunset at 6:32 pm. On the last day of September, sunrise is at 6:09 am and sunset at 6:08 pm AST.
Ocean temperature
September is the month with the warmest seawater, with an average ocean temperature of 84.9°F (29.4°C).Note: Swimming, diving, and other activities in water temperatures between 77°F (25°C) and 84.2°F (29°C) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.
Daylight
In September, the average length of the day in Virgin Islands National Park is 12h and 14min.On the first day of the month, sunrise is at 6:04 am and sunset at 6:32 pm. On the last day of September, sunrise is at 6:09 am and sunset at 6:08 pm AST.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
When is the ocean warmest?
With an average ocean temperature of 84.9°F (29.4°C), September is the month with the warmest seawater.
What is the water temperature in September?
In Virgin Islands National Park, in September, the average water temperature is 84.9°F (29.4°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.
What is the average length of the day in September?
The average day length in September is 12h and 14min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 6:04 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 6:08 pm AST.
Average sea temperature in September
Virgin Islands National Park, VI
- Average sea temperature in September: 85°F
The best month for swimming (with the highest average sea temperature) is September (85°F).
The coldest month (with the lowest average sea temperature) is February (78.7°F).
Average daylight in September
Virgin Islands National Park, VI
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
Virgin Islands National Park, United States Virgin Islands, USA
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