Saint John Weather in September

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

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Saint John

Thinking about venturing to Saint John, US Virgin Islands this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Saint John in September

Saint John, US Virgin Islands is a region in US Virgin Islands. September in Saint John 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 Saint John. 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.

To explore the conditions in Saint John, US Virgin Islands in more detail, check the map below.

Precipitation

September is a rainy month with an average rainfall of around 145 mm (5.7 in) in Saint John. Looking at the climate data spanning the last 30 years, this month sees the heaviest rainfall of the year in Saint John.

Explore Saint John by month

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Best Places to Visit in Saint John in September

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

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 John

What is the weather like in September for the most popular destinonation in Saint John, US Virgin Islands?

Saint John

In September Saint John 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)
145 mm (5.7 in)
140 mm (5.5 in)
Monthly rainy days
20 days
19 days
19 days
Weather conditions
tolerable
tolerable
pleasant
Climate in Saint John →

Is your destination not in the list? Have a look at all destinations in Saint John, 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.

Saint John weather in September: frequently asked questions

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

September in Saint John, US Virgin Islands brings unpleasant weather. In Saint John, daytime temperatures are typically around 30°C (86°F) and nighttime lows hover near 27°C (81°F).

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

In Saint John, the average daytime high in September is 30°C (86°F), while nighttime temperatures drop to around 27°C (81°F).

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

Saint John, US Virgin Islands sees substantial rainfall in September. Saint John typically averages about 145 mm (5.7 in), a mix of wet and dry days, but bring an umbrella.

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

Given the typically tolerable weather conditions in Saint John, September may not be the ideal time to visit Saint John, US Virgin Islands.

Generally speaking, the best visiting conditions can be found in January, February, March, April, May, June, July and December offering mostly perfect weather in Saint John. 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 John.

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.