April weather forecast
Saint John, VI

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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 April

Navigating from March, April in Saint John witnesses moderate changes. The city continues its journey through the year maintaining its tropical climate characteristics, with a slight rise in temperatures making for a warmer month. The noticeable shift in weather this month lies in the 3.5" (89mm) of rainfall, a pronounced jump from March. While the weather remains largely predictable, April is slightly more prone to wet spells.

Temperature

The shift into April uncovers an average high-temperature of a still moderately hot 84.2°F (29°C), subtly different from the previous month. Throughout April nights, Saint John registers an average low-temperature of 71.6°F (22°C).

Rainfall

In Saint John, United States Virgin Islands, in April, it is raining for 9 days, with typically 3.46" (88mm) of accumulated precipitation. In Saint John, during the entire year, the rain falls for 156 days and collects up to 49.69" (1262mm) of precipitation.

Ocean temperature

January through April, with an average ocean temperature of 78.8°F (26°C), are months with the coldest seawater.
Note: Surface water temperatures between 77°F (25°C) and 84.2°F (29°C) offer outstanding conditions for any water activity, providing extreme pleasure for extended periods.

Daylight

In April, the average length of the day is 12h and 34min.
On the first day of the month, sunrise is at 6:12 am and sunset at 6:32 pm. On the last day of April, sunrise is at 5:51 am and sunset at 6:40 pm AST.

Sunshine

The months with the most sunshine are March, April, July and August, with an average of 9h of sunshine.

UV index

The months with the highest UV index in Saint John are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In April, the average maximum UV index of 12 translates into the following recommendations:
Carry out all important precautions, unprotected skin could get burns in no time. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Apply generously and frequently reapply a sunscreen with SPF 30 or more even on cloudy days, particularly after a swim or outdoor exercise. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.

Frequently asked questions

How hot is it in April?

During April, Saint John experiences an average high-temperature of 84.2°F (29°C) and a low-temperature of 71.6°F (22°C).

How many days does it rain in April?

In April, in Saint John, the rain falls for 9 days. Throughout April, 3.46" (88mm) of precipitation is accumulated.

What months are the ocean coldest?

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

What is the ocean temperature in April?

In April, the average ocean temperature 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.

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

In April, the average day length is 12h and 34min.

What time are sunrise and sunset in April in Saint John?

On the first day of April, sunrise is at 6:12 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 6:40 pm AST.

What is the month with the most sunshine?

March, April, July and August, with an average of 9h of sunshine, are months with the most sunshine.

How long on average sun shines in April?

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

What is the month with the highest UV index?

March through September, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index reading in April?

In April, the average daily maximum UV index is 12. A UV Index of 11, and more, symbolizes an extreme health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in April
Saint John, VI

Average temperature in April - Saint John, VI
  • Average high temperature in April: 84°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 April: 72°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 April
Saint John, VI

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

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 April
Saint John, VI

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

Average sea temperature in April - Saint John, VI
  • Average sea temperature in April: 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 April /
Average sunshine in April
Saint John, VI

Average daylight in April / Average sunshine in April - Saint John, VI
  • Average daylight in April: 12h and 4min

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 April: 9h

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 April
Saint John, VI

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

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).

Saint John, United States Virgin Islands, USA

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