August weather forecast
Saint John, VI

August moves in with similar weather conditions to July, maintaining a warm and humid climate in Saint John. The tropical city welcomes visitors seeking the warm waters and abundant sunshine during this summertime. August does ramp up its rainfall, reaching 4.9" (124mm). This spike in rain showers lends a distinct monsoon touch to the month, adding to its tropical allure.

Temperature

Temperatures in Saint John, United States Virgin Islands, reach their maximum during August and September, recording an average high-temperature of 87.8°F (31°C).

Rainfall

In Saint John, in August, during 14 rainfall days, 4.88" (124mm) of precipitation is typically accumulated. In Saint John, during the entire year, the rain falls for 156 days and collects up to 49.69" (1262mm) of precipitation.

Ocean temperature

In Saint John, the average seawater temperature in August is 82.4°F (28°C).
Note: Swimming, diving, and similar water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as very agreeable and pleasurable for lengthy periods without discomfort.

Daylight

In Saint John, the average length of the day in August is 12h and 44min.
On the first day of the month, sunrise is at 5:57 am and sunset at 6:53 pm. On the last day of August, sunrise is at 6:04 am and sunset at 6:33 pm AST.

Sunshine

The months with the most sunshine 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 reading of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 12 in August translates into the following recommendations:
Adopt all important safety measures, unprotected skin may burn rapidly. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete 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. After a swim or an outdoor workout, generously apply and reapply a broad-spectrum SPF 30+ sunscreen. Alert! UV radiation becomes sharper due to reflections from sand and water.