Saint Croix weather

Our guide to the weather in Saint Croix during August

29

Average high

6

UV Index

200mm

Monthly rainfall

77%

Humidity

We've looked at the most up-to-date weather data for Saint Croix, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Saint Croix weather in August.

How warm is it in Saint Croix during August?

The temperature is extremely stable in August with average highs of 29℃ and lows just 1℃ lower at 28℃. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Saint Croix during August?

On average, there will be 8 rainy days during the month, amounting to 199.9mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, August will see just 4 days that produce a storm.

Is it windy in Saint Croix during August?

Expect moderate breeze becoming stronger at times during August, with occasional gusts up to 20mph. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.

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Weather in Saint Croix

Our month-by-month guide to the weather and climate in Saint Croix

26.3

Saint Croix weather in

January
26.1

Saint Croix weather in

February
26.1

Saint Croix weather in

March
26.8

Saint Croix weather in

April
27.5

Saint Croix weather in

May
28.3

Saint Croix weather in

June
28.5

Saint Croix weather in

July
28.8

Saint Croix weather in

August
29.1

Saint Croix weather in

September
28.8

Saint Croix weather in

October
28.0

Saint Croix weather in

November
27.1

Saint Croix weather in

December