How warm is the US Virgin Islands in September?

Typical highs are about 84°F and the sea is about 86°F. That is warm enough for long swims without a wetsuit.

Is September hurricane season in the US Virgin Islands?

September falls in the tropical storm season; the typical risk on a given day is high. It peaks in September. Travel insurance and flexible bookings help.

How crowded is the US Virgin Islands in September?

Typically quiet, around Labor Day weekend and Mexican Independence Day. The quietest months are usually September and October.

The US Virgin Islands in September

September is a good month for the US Virgin Islands: a typical day grades A-, the 5th best of the 12 months. Expect highs near 84°F, water around 86°F and about a 51% chance of rain on a given day. Beaches are typically quiet (Labor Day weekend and Mexican Independence Day). It is hurricane season, with high storm risk.

Typical dayA-5th of 12 months

Highs / water84°FSea 86°F

Rain chance51%on a given day

Waves3.4 fttypical

CrowdsQuietLabor Day weekend

Storm riskHighhurricane season

The US Virgin Islands month by month

Typical grade and high for each month. Higher is better: A+ to F.

August: B+ · September: A- · October: A-. The best months are usually April, May and June, and the weakest are February and November.

Best beaches in the US Virgin Islands in September

Resorts with the best typical September, and their grades for the next few days.

Beach	Typical Sep	This week
The Westin Beach Resort & Spa at Frenchman's Reef	A-	SatA-SunA-MonATueA-WedA
Virgin Islands Camp Ground	A-	SatB+SunA-MonA-TueA-WedA-
Carib Beach Resort	A-	SatB+SunA-MonA-TueA-WedA-
The Westin St. John Resort	A-	SatA-SunA-MonA-TueA-WedA-
Caneel Bay / North Shore St. John Beaches	A-	SatA-SunA-MonA-TueA-WedA-
Frederiksted Beach Resorts	A-	SatA-SunBMonA-TueA-WedB+
Mango Mojo Villa	A-	SatA-SunA-MonA-TueA-WedA-
Gallows Point Resort	A-	SatA-SunA-MonA-TueA-WedA-

Grades for the next few days from Veabird's beach forecast, updated Oct 3, 18:00 UTC. Higher is better: A+ to F.

Better beach options in September

Further afield: Maui (A), Oʻahu (A) and Kauaʻi (A). Every destination in September.

Questions

Is September a good time to visit the US Virgin Islands?: September is a good month for the US Virgin Islands: a typical day grades A-, the 5th best of the 12 months. Expect highs near 84°F, water around 86°F and about a 51% chance of rain on a given day. Beaches are typically quiet (Labor Day weekend and Mexican Independence Day). It is hurricane season, with high storm risk.
How warm is the US Virgin Islands in September?: Typical highs are about 84°F and the sea is about 86°F. That is warm enough for long swims without a wetsuit.
Is September hurricane season in the US Virgin Islands?: September falls in the tropical storm season; the typical risk on a given day is high. It peaks in September. Travel insurance and flexible bookings help.
How crowded is the US Virgin Islands in September?: Typically quiet, around Labor Day weekend and Mexican Independence Day. The quietest months are usually September and October.

Plan it

U.S. Virgin Islands: this week's forecast, beach by beach
Caribbean Beach Report: this week, updated every Monday
Compare dates and beaches on the map

Typical-month numbers from Veabird's year-ahead outlook for the 24 resorts here (median resort): 6 years of ERA5 climate normals, the seasonal pattern of the Atlantic sargassum belt, holiday crowd calendars and historical storm tracks. Any given year can differ; check the 16-day forecast before you go.