Cruz Bay

Saint Croix Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Saint Croix, US Virgin Islands in September.

🔎
Christiansted Frederiksted Cruz Bay

Are you planning a trip a to Saint Croix, US Virgin Islands in September and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Saint Croix in September

Saint Croix, US Virgin Islands is a region in US Virgin Islands. September in Saint Croix generally has warm temperatures, with high precipitation.

Temperatures

You can expect warm maximum daytime temperatures of around 30°C (86°F) and nighttime temperatures around 27°C (81°F) in Frederiksted. While the given temperatures for day and night are typical, there may be days that feel warmer. Make sure you're dressed in a way that keeps you cool and comfortable.

For specific regional insights in Saint Croix, US Virgin Islands, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From high rainfall in Cruz Bay with an average of 146 mm (5.7 in) to high rainfall in Frederiksted with 155 mm (6.1 in). Based on our climate, it is the month with the most precipitation throughout the year in Frederiksted.

Explore Saint Croix by month

Pick a month to see the average temperature, rainfall and sunshine in Saint Croix — and find the best time to visit. (based on Christiansted)

January27°C (81°F) February27°C (81°F) March27°C (81°F) April28°C (82°F) May28°C (82°F) June29°C (84°F) This monthJuly29°C (84°F) August30°C (86°F) September30°C (86°F) October29°C (84°F) November29°C (84°F) December28°C (82°F)
Best Time to Visit Saint Croix →

Best Places to Visit in Saint Croix in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Saint Croix.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Saint Croix

What is the weather like in September for some of the most popular destinations in Saint Croix, US Virgin Islands?

Temperature range in Saint Croix (September)

Precipitation variation in Saint Croix (September)

Frederiksted

In September Frederiksted generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
29°C (84°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly rainfall
118 mm (4.6 in)
155 mm (6.1 in)
140 mm (5.5 in)
Monthly rainy days
19 days
18 days
19 days
Weather conditions
tolerable
tolerable
pleasant
Climate in Frederiksted →

Cruz Bay

In September Cruz Bay generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
29°C (84°F)
Min temperature
27°C (81°F)
27°C (81°F)
26°C (79°F)
Monthly rainfall
112 mm (4.4 in)
146 mm (5.7 in)
140 mm (5.5 in)
Monthly rainy days
20 days
18 days
19 days
Weather conditions
tolerable
tolerable
pleasant
Climate in Cruz Bay →

Christiansted

In September Christiansted generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
30°C (86°F)
29°C (84°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly rainfall
117 mm (4.6 in)
154 mm (6.1 in)
140 mm (5.5 in)
Monthly rainy days
19 days
18 days
19 days
Weather conditions
tolerable
tolerable
pleasant
Climate in Christiansted →

Is your destination not in the list? Have a look at all destinations in Saint Croix, in US Virgin Islands.

In our records: US Virgin Islands September extremes

Notable September records observed across cities in US Virgin Islands in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest September day in US Virgin Islands reached 44°C (111°F) in Frederiksted on September 14, 2013.

Popular cities in September

Day & night temperatures, rainfall and average weather in Saint Croix in September.

City Weather Day temp Night temp Rainfall
Christiansted 30°C (86°F) 27°C (81°F) 154 mm (6.1 in)
Frederiksted 30°C (86°F) 27°C (81°F) 155 mm (6.1 in)
Cruz Bay 30°C (86°F) 27°C (81°F) 146 mm (5.7 in)

Saint Croix weather in September: frequently asked questions

What is the weather like in Saint Croix, US Virgin Islands in September?

Saint Croix, US Virgin Islands typically experiences unpleasant weather in September, part of the season. Daytime highs in Frederiksted average around 30°C (86°F), and temperatures drop to about 27°C (81°F) at night.

What is the average temperature in Saint Croix, US Virgin Islands in September?

Average temperatures in Saint Croix, US Virgin Islands during September range from a nighttime low near 27°C (81°F) to a daytime high around 30°C (86°F) in Frederiksted.

Does Saint Croix, US Virgin Islands get a lot of rain in September?

Saint Croix, US Virgin Islands sees substantial rainfall in September. Frederiksted typically averages about 155 mm (6.1 in), a mix of wet and dry days, but bring an umbrella.

Is September a Good Time to Visit Saint Croix, US Virgin Islands?

In our view, September might not be the best time to travel to Saint Croix, US Virgin Islands with often tolerable weather in Frederiksted.

Generally speaking, the best visiting conditions can be found in January, February, March, April, May, June, July and December offering mostly perfect weather in Frederiksted. On the other hand, the weather in August and September tend to be unpleasant.

Interested in more climate information?

We have much more information about the climate in Saint Croix.

Weather and climate has detailed information for every country in the world. Are you going to US Virgin Islands? Get detailed historical weather averages for many cities in US Virgin Islands.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.