Saint John
United States Virgin Islands, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Saint John, VI

Beautiful scenery with green vegetation, and the vast blue water around the islands in St John, a cloudy and sunny sky with a great beach scene
Beautiful scenery with green vegetation, and the vast blue water around the islands in St John, a cloudy and sunny sky with a great beach scene
April, like March, in Saint John, United States Virgin Islands, is a moderately hot spring month, with temperature in the range of an average low of 71.6°F (22°C) and an average high of 84.2°F (29°C).

Temperature

In Saint John, the average high-temperature is relatively the same as in March - a still moderately hot 84.2°F (29°C). In Saint John, in April, the average low-temperature is 71.6°F (22°C).

Rainfall

In Saint John, during 9 rainfall days, 3.5" (88mm) of precipitation is typically accumulated. Throughout the year, there are 156 rainfall days, and 49.7" (1262mm) of precipitation is accumulated.

Ocean temperature

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

Daylight

The average length of the day in Saint John is 12.6h.

Sunshine

Months with the most sunshine in Saint John are March, April, July and August, with an average of 9h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme health hazard from the exposure to the Sun's UV rays for average individuals.
The average daily UV index of 12 transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in April in Saint John?

In April, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 71.6°F (22°C).

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

In Saint John, in April, it is raining for 9 days, with typically 3.5" (88mm) of accumulated precipitation.

What months are the ocean coldest in Saint John?

January through April, with an average ocean temperature of 78.8°F (26°C), are months with the coldest seawater in Saint John, United States Virgin Islands. 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.

What is the ocean temperature in April in Saint John?

In Saint John, the average seawater temperature in April 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.

What is the average length of the day in April in Saint John?

In April, the average length of the day in Saint John, United States Virgin Islands, is 12.6h.

What is the month with the most sunshine in Saint John?

Months with the most sunshine in Saint John are March, April, July and August, with an average of 9h of sunshine.

How many hours of sunshine does Saint John have in April?

In April, the average sunshine in Saint John is 9h.

What is the month with the highest UV index in Saint John?

Months with the highest UV index in Saint John, United States Virgin Islands, are March through September, with an average maximum UV index of 12.

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

The average daily maximum UV index in April in Saint John, United States Virgin Islands, is 12. A UV Index of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV rays.
Average temperature in April - Saint John, VI
  • Average high temperature in April: 84°F

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

  • Average low temperature in April: 72°F

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

Average rainfall in April - Saint John, VI
  • Average rainfall in April: 3.5"

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

Average rainfall days in April - Saint John, VI
  • Average rainfall days in April: 9 days

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

Average sea temperature in April - Saint John, VI
  • Average sea temperature in April: 79°F

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

Average daylight in April / Average sunshine in April - Saint John, VI
  • Average daylight in April: 12.6h

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in April: 9h

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

Average UV index in April - Saint John, VI
  • Average UV index in April: 12

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).