January weather forecastSaint John, VI

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

January

Weather in January

Saint John ushers in the year with typically maritime tropical weather, featuring warm temperatures, ample sun, moderate rain. Moving from December, the city witnesses little fluctuation, both in the degree of temperatures and rainfall. A notable feature of January weather is the occurrence of 14 rainy days with 2.7" (69mm) of precipitation. The weather tends to be relatively consistent throughout January, offering locals and visitors a predictable climate for starting the new year.

Temperature

Saint John experiences its coldest period in January through March and December, averaging a high-temperature of 82.4°F (28°C).

Rainfall

In Saint John, during January, the rain falls for 14 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, there are 156 rainfall days, and 49.69" (1262mm) of precipitation is accumulated.

Ocean temperature

January through April, with an average ocean temperature of 78.8°F (26°C), are months with the coldest seawater.
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.

Daylight

The average length of the day in January is 11h and 11min.
On the first day of the month, sunrise is at 6:50 am and sunset at 5:53 pm. On the last day of January, sunrise is at 6:52 am and sunset at 6:12 pm AST.

Sunshine

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

UV index

In January, the average daily maximum UV index in Saint John is 8. A UV Index reading of 8 to 10 represents a very high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 8 in January translates into the following instructions:
Always take precautions; unprotected eyes and skin can be damaged rapidly. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Watch out! Reflections from sand and water can surge UV radiation exposure.

Updated: Jul 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The months of January through March and December bring the lowest temperatures, averaging a high of 82.4°F (28°C).

During January, Saint John experiences an average high-temperature of 82.4°F (28°C) and a low-temperature of 69.8°F (21°C).

In Saint John, during January, the rain falls for 14 days and regularly aggregates up to 2.68" (68mm) of precipitation.

The months with the coldest seawater are January through April, with an average ocean temperature of 78.8°F (26°C).

In Saint John, the average seawater temperature in January is 78.8°F (26°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

In January, the average day length in Saint John, United States Virgin Islands, is 11h and 11min.

In January, on the first day of the month, sunrise is at 6:50 am and sunset at 5:53 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:12 pm AST.

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

The average daily maximum UV index in January is 8. A UV Index estimate of 8 to 10 represents a very high health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

82°F

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in January
Saint John, VI

Average high temperature in January: 82°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 January: 70°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).

Average rainfall in January
Saint John, VI

Average rainfall in January: 2.7"

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

Average rainfall days in January
Saint John, VI

Average rainfall days in January: 14 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).

Average sea temperature in January
Saint John, VI

Average sea temperature in January: 79°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).

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

Average daylight in January: 11h and 12min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

Average sunshine in January: 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).

Average UV index in January
Saint John, VI

Average UV index in January: 8

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).