October weather forecast
Saint John, VI

Beautiful scenery with green vegetation and the vast blue water around the islands in St John, Virgin Islands
Beautiful scenery with green vegetation and the vast blue water around the islands in St John, Virgin Islands

Weather in October

October, like September, is another tropical autumn month in Saint John, United States Virgin Islands, with an average temperature ranging between max 86°F (30°C) and min 75.2°F (24°C).

Temperature

In Saint John, United States Virgin Islands, the average high-temperature in October is essentially the same as in September - a still hot 86°F (30°C). In October, in Saint John, the average low-temperature is 75.2°F (24°C).

Rainfall

The wettest months are October and November, with an average 6.34" (161mm) of rainfall.

Ocean temperature

The months with the warmest seawater in Saint John are September and October, with an average ocean temperature of 84.2°F (29°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in October is 11h and 43min.
On the first day of the month, sunrise is at 6:09 am and sunset at 6:07 pm. On the last day of October, sunrise is at 6:18 am and sunset at 5:46 pm AST.

Sunshine

In October, the average sunshine in Saint John, United States Virgin Islands, is 8h.

UV index

In Saint John, the average daily maximum UV index in October is 10. A UV Index estimate of 8 to 10 represents a very high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In October, the average maximum UV index of 10 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in October in Saint John?

The average high-temperature, in October, in Saint John, is 86°F (30°C), while the average low-temperature is 75.2°F (24°C).

What is the rainiest month in Saint John?

The months with the most rainfall in Saint John, United States Virgin Islands, are October and November, with an average 6.34" (161mm) of precipitation.

How many days does it rain in October in Saint John?

In Saint John, during October, the rain falls for 16 days and regularly aggregates up to 6.34" (161mm) of precipitation.

When is the ocean warmest in Saint John?

September and October, with an average ocean temperature of 84.2°F (29°C), are months with the warmest seawater.

What is the water temperature in October in Saint John?

In Saint John, in October, the average water temperature is 84.2°F (29°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.

How many hours of daylight does Saint John have in October?

In October, the average day length is 11h and 43min.

When is the sunrise / sunset in October in Saint John?

In October, on the first day of the month, sunrise is at 6:09 am and sunset at 6:07 pm. On the last day of the month, in Saint John, sunrise is at 6:18 am and sunset at 5:46 pm AST.

How long on average sun shines in October in Saint John?

In Saint John, the average sunshine duration in October is 8h.

What is the UV index reading in October in Saint John?

The average daily maximum UV index in October is 10. A UV Index reading of 8 to 10 represents a very high health vulnerability from unsafe exposure to Sun's UV rays.
Average rainfall days
Average sunshine
Average UV index

Average temperature in October
Saint John, VI

Average temperature in October - Saint John, VI
  • Average high temperature in October: 86°F

The warmest months (with the highest average high temperature) are August and September (88°F).
The months with the lowest average high temperature are January, February, March and December (82°F).

  • Average low temperature in October: 75°F

The months with the highest average low temperature are June, July, August, September and October (75°F).
The coldest months (with the lowest average low temperature) are January, February and March (70°F).

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Average rainfall in October
Saint John, VI

Average rainfall in October - Saint John, VI
  • Average rainfall in October: 6.3"

The wettest months (with the highest rainfall) are October and November (6.3").
The driest month (with the least rainfall) is February (2.1").

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Average rainfall days in October
Saint John, VI

Average rainfall days in October - Saint John, VI
  • Average rainfall days in October: 16 days

The months with the highest number of rainy days are September and October (16 days).
The month with the least rainy days is April (9 days).

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Average sea temperature in October
Saint John, VI

Average sea temperature in October - Saint John, VI
  • Average sea temperature in October: 84°F

The best months for swimming (with the highest average sea temperature) are September and October (84°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (79°F).

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Average daylight in October /
Average sunshine in October
Saint John, VI

Average daylight in October / Average sunshine in October - Saint John, VI
  • Average daylight in October: 11h and 43min

The month with the longest days is June (Average daylight: 13h and 13min).
The month with the shortest days is December (Average daylight: 11h and 3min).

  • Average sunshine in October: 8h

The months with the most sunshine are March, April, July and August (Average sunshine: 9h).
The months with the least sunshine are November and December (Average sunshine: 7h).

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Average UV index in October
Saint John, VI

Average UV index in October - Saint John, VI
  • Average UV index in October: 10

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).

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