Best time to visit St John
The best time to visit St John in the U.S. Virgin Islands is anytime from early-December to mid-April, with the driest weather during the months of January, February and March.
You can expect an average hightemperature of 29°C (84°F) and a low of 23°C (73°F).
St John, U.S. Virgin Islands weather
The U.S. Virgin Islands has a hot tropical climate year-round, with a relatively cooler period from December to March, with average highs around 29°C (84°F), and a hot and sultry period from May to October, with highs around 32°C (90°F), during which the high heat is tempered by easterly trade winds.
You can expect rainfall throughout the year in St John. The months with the least rainfall are January through March.
What is the best month to visit St John, USVI?
January, February and March are the best months to visit St John, since this is the driest time of year, with warm, sunny weather, mainly clear skies and good conditions for swimming.
December and April are also acceptable months, although with an increase in rainfall
Which is the hottest month in St John?
The hottest time of year in St John is normally August. Expect maximum daytime temperatures to reach 32°C (89°F) with high heat and humidity, and a low of 26°C (78°F).
The hot season lasts from mid-June to mid-October, with an average daily high temperature above 31°C (88°F).
Which is the coldest month in St John?
The coldest month of the year in St John is January, with an average high of 29°C (84°F) and low of 23°C (73°F).
The cool season lasts from mid-December through March, with an average daily high temperature below 29°C (84°F).
Which is the sunniest month in St John?
The sunniest time of year in St John is usually March and April, with bright sunshine on average for 73% of daylight hours; that's nine hours of sunshine per day.
What is the humidity in St John?
St John experiences little seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 70% – 75% over the course of the year.
What do the humidity conditions feel like in St John?
We derive the humidity comfort level – what conditions feel like – from the dew point temperature, which measures moisture content in the atmosphere: a higher dew point feels more humid, while a lower dew point feels drier.
Meteorologists agree that dew point temperature is a more consistant indication of 'absolute humidity' than relative humidity, which fluctuates with temperature.
The average annual dew point in St John is 22°C (71°F), and varies over the course of the year from humid at 20°C (68°F) to muggy at 24°C (75°F).
The more humid time of year in St John lasts from April through to mid-January, when you can expect the comfort level to be muggy at least 80% of the time.
The months with the most muggy days in St John are May through November, when almost every day in each month is muggy or worse.
The month with the fewest number of muggy days is February, with around 21 days that are muggy.
When is the sea warmest in St John?
The sea is usually at its warmest in St John in August when the water temperature averages 30°C (86°F), which is pleasant for swimming.
The sea in the U.S. Virgin Islands is warm enough to swim year-round.
Which month has the most rain in St John?
November is usually the wettest month in St John with 160mm (6in) of rainfall on average distributed across eight days.
The wet season lasts from May through November, with a greater than 20% chance of any given day being a wet day.
The months with the most rainfall are September, October and November. Downpours are usually followed by hot and sunny weather.
The drier season lasts from December through April. The month with the fewest wet days in St John is March.
What are the windiest months in St John?
The windiest month in St John is July, with an average hourly wind speed of 25 kilometres per hour (13 knots; 15mph).
The windy part of the year lasts from early-June through August, with average wind speeds of more than 22 kilometres per hour (12 knots; 14mph).
The calmer time of year lasts from September through May. The month with the least amount of wind month of the year in St John is October, with an average hourly wind speed of 19 kilometres per hour (10 knots; 12mph).
The predominant average hourly wind direction in St John is from the east throughout the year.
Is there a risk of a tropical storm in St John?
The likelihood of a tropical storm in St John is greatest during the hurricane season with a risk of 3.7% in September. The hurricane season lasts from June to early November.
St John Weather Averages
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average high temperature (°C) | |||||||||||
| 29 | 29 | 29 | 29 | 30 | 31 | 32 | 32 | 32 | 31 | 30 | 29 |
| Average low temperature (°C) | |||||||||||
| 23 | 23 | 23 | 24 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 24 |
| Average daily sunshine (hrs) | |||||||||||
| 8 | 8 | 9 | 9 | 8 | 8 | 9 | 9 | 8 | 8 | 7 | 7 |
| Average daily daylight (hrs) | |||||||||||
| 11 | 11 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 11 | 11 | 11 |
| Comfort level – heat | |||||||||||
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| Comfort level – humidity (#muggy days) | |||||||||||
| 25 | 21 | 23 | 26 | 30 | 29 | 30 | 30 | 29 | 30 | 28 | 27 |
| Average dew point temperature (°C) | |||||||||||
| 21 | 20 | 20 | 21 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 21 |
| Average relative humidity (%) | |||||||||||
| 72 | 71 | 70 | 71 | 73 | 71 | 71 | 73 | 75 | 75 | 75 | 73 |
| UV Index (max) | |||||||||||
| 8 | 10 | 11+ | 11+ | 11+ | 11+ | 11+ | 11+ | 11+ | 10 | 8 | 7 |
| Average days of rainfall (≥1mm) | |||||||||||
| 4 | 3 | 3 | 4 | 8 | 6 | 6 | 8 | 10 | 10 | 8 | 5 |
| Average monthly rainfall (mm) | |||||||||||
| 70 | 55 | 52 | 60 | 89 | 77 | 99 | 117 | 142 | 151 | 160 | 83 |
| Average wind speed (km/h) | |||||||||||
| 24 | 24 | 22 | 21 | 21 | 24 | 25 | 23 | 20 | 20 | 22 | 24 |
| Average sea temperature (°C) | |||||||||||
| 26 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Cruz Bay, Saint John, USVI | |||||||||||
Holiday seasons
High Season: Mid-December to mid-April; Low season: Mid-April to mid-November when many hotels slash prices by as much as 50 per cent.
Source: Meteorological data for St John (USVI) is based on weather statistics gathered for the 30-year period 1991 to 2020 from the closest weather station: Cyril E. King Airport (STT), located on the southwest side of St Thomas Island less than 5km (3mi) west of the capital, Charlotte Amalie, and around 20km (12mi) west of St John Island. Additional climate data is sourced from the United States National Oceanic and Atmospheric Administration (NOAA).
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
Latest update: Best time to visit St John: 16 May, 2024
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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