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    U.S. Virgin Islands

    Saint Thomas weather and climate

    U.S. Virgin Islands

    Saint Thomas weather and climate

     

    Day

    28 °C

     

    Night

    21 °C

     

    Sea

    26 °C

     

    Precipitation

    50 mm

    in month

     

    Rainy days

    8 days

    in month

     

    Daylight

    12 hours

    average

     

    Sunshine

    9 hours

    average

     

    Humidity

    73 %

     

    Day

    28 °C

     

    Night

    21 °C

     

    Sea

    26 °C

     

    Precipitation

    50 mm

    in month

     

    Rainy days

    8 days

    in month

     

    Daylight

    12 hours

    average

     

    Sunshine

    9 hours

    average

     

    Humidity

    73 %

    Overview: Saint Thomas
    Saint Thomas, located in the U.S. Virgin Islands, is characterized by its warm, tropical climate with consistent temperatures and an enticingly warm sea. Daily temperatures usually range between 28 °C (82 °F) in the cooler month of January to a peak of 31 °C (88 °F) in the warmest month of August. When the sun sets, the island cools slightly, with night temperatures varying from 21 °C (70 °F) in February to 24 °C (75 °F) in July. Moreover, sea temperatures are warmest in September, reaching 29 °C (84 °F), and cool to their lowest point at 26 °C (79 °F) in February. The island sees the least amount of rainfall in March, with only 8 days of precipitation, whereas the rainiest period is observed in November with 14 days. As you plan your visit, consider these climatic nuances to fully enjoy the island's natural beauty and offerings.

    Weather charts for Saint Thomas

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    Last week's weather in Saint Thomas

    The average temperature for the week of 19 February 2024 - 25 February 2024 was 27 °C (81 °F) during the day and 22 °C (72 °F) during the night. Both the daily and night temperatures in Saint Thomas are roughly same as the long-term average, which is around 28 °C (82 °F) and 21 °C (70 °F) respectively. The average temperatures during different times of day (local time) were following: 7am 22 °C (72 °F), 10am 25 °C (77 °F), 1pm 25 °C (77 °F), 4pm 26 °C (79 °F), 7pm 24 °C (75 °F), 10pm 24 °C (75 °F).

    There were 2 days without rain, 2 days with light rain and 3 days with moderate rain during this week. Saint Thomas received 22 mm (0.87 in) of precipitation throughout the week, which is above its long-term average of 10 mm (0.39 in). The daytime hours (from dawn to dusk) had an average cloud coverage of 32 %.

    An average wind speed of 4.4 m/s was recorded. The atmosferic pressure ranged from 1011 hpa to 1020 hpa. The average air humidity was 78 % in Saint Thomas.

    On average, there were 3.5 hours clear skies, 4 hours partially overcast skies, 1 hour overcast skies and 3 hours rainy weather during the daytime (from dawn to dusk). At 06:43, on average, the sun rose, and at 18:23, the sun set.

    Weather overview for Saint Thomas

    Weather overview

    Saint Thomas, located in the U.S. Virgin Islands, is characterized by its warm, tropical climate with consistent temperatures and an enticingly warm sea. Daily temperatures usually range between 28 °C (82 °F) in the cooler month of January to a peak of 31 °C (88 °F) in the warmest month of August. When the sun sets, the island cools slightly, with night temperatures varying from 21 °C (70 °F) in February to 24 °C (75 °F) in July. Moreover, sea temperatures are warmest in September, reaching 29 °C (84 °F), and cool to their lowest point at 26 °C (79 °F) in February. The island sees the least amount of rainfall in March, with only 8 days of precipitation, whereas the rainiest period is observed in November with 14 days. As you plan your visit, consider these climatic nuances to fully enjoy the island's natural beauty and offerings.

    January weather

    In Saint Thomas, the daytime temperature hits its minimal values while the sea temperature continues to decrease to 26 °C (79 °F). Compared to the previous month, there are fewer rainy days totaling 10 days, and a decrease in the amount of rainfall noted at 67 mm (2.65 in). The temperature at night continues its downward trend, recorded at 21 °C (70 °F). There's a noticeable start to an increase in sun hours, with 8 hours being cloud-free.

    February weather

    The lowest sea temperatures of the year can be felt this month in Saint Thomas, marking 26 °C (79 °F), while the nighttime temperatures also hit their lows. Rainfall has reduced to its minimal volume of 43 mm (1.70 in), coinciding with the decrease in the number of rainy days, recorded at 10 days. The number of sunny hours increases slightly to 8 hours.

    March weather

    In March, the quantity of rainy days in Saint Thomas is at its yearlong low, tallying 8 days, while the amount of rainfall begins to climb slightly, reaching 50 mm (1.97 in). The maximum number of sun hours is achieved at 9 hours, and the lowest humidity levels of the year are also observable this month.

    April weather

    The day temperature in Saint Thomas starts to ascend, with the sea temperature also witnessing a rise to 27 °C (80 °F). The number of rainy days begins to increase, and a surge in rainfall volume is observed, reaching 77 mm (3.01 in). The night temperature rises marginally.

    May weather

    In Saint Thomas, the sea temperature continues to rise to 27 °C (81 °F), alongside the noticeable increase in day temperature, now at 30 °C (85 °F). Rainy days are on the upswing, reported at 11 days, and the precipitation volume continues to rise, marked at 109 mm (4.30 in). Night temperatures are also climbing, while the number of sunny hours sees a slight decrease to 8 hours.

    June weather

    Daytime temperatures in Saint Thomas are increasing, with a new high of 30 °C (87 °F), and the sea temperature climbs to 28 °C (82 °F). The change to fewer rainy days begins, now at 10 days, while the rainfall volume decreases to 77 mm (3.05 in). The day length reaches its peak in June.

    July weather

    The upward trend of rainy days in Saint Thomas continues to 12 days, with an elevation in the amount of rainfall observed at 88 mm (3.45 in). The increase in the number of sunny hours is also noticeable. Night temperatures peak for the year, totalling 24 °C (75 °F). The highest wind speeds are recorded, averaging 5 m/s.

    August weather

    The number of rainy days in Saint Thomas keeps growing, now at 12 days, with rainfall also on the rise, documented at 101 mm (3.97 in). The acme of daytime temperatures is noted at 31 °C (88 °F).

    September weather

    In Saint Thomas, the climb in rainfall volume is perceptible at 119 mm (4.69 in). The number of sunny hours begins to withdraw to 8 hours, and the peak of the sea temperatures is marked at 29 °C (84 °F).

    October weather

    The number of rainy days in Saint Thomas rises to 13 days, correlating with the continued increase in rainfall volume at 130 mm (5.13 in). The wind speed reaches its lowest in October, while the highest humidity levels are also noticable in this month.

    November weather

    The descent in sea temperature begins in Saint Thomas, reaching 28 °C (82 °F), while the day temperature starts to drop this month. The highest number of rainy days are evidenced at 14 days, and the largest volume of rainfall is also quite apparent, with its measurement at 134 mm (5.29 in).

    December weather

    A downward trend in sea temperatures is observable in Saint Thomas, with day temperatures also on the decline, noted at 28 °C (83 °F). A reduction in the the number of rainy days can be seen, amounting to 13 days, and a decrease in rainfall is also evident in December. The night temperature dips in similarity to previous months.

    FAQs

    How frequently does it rain in Saint Thomas during January?

    In January, Saint Thomas experiences rain on about 10 days, with precipitations expected roughly 2.4 days per week or nearly 34 % of the time.

    How would you describe February's climate in Saint Thomas?

    February in Saint Thomas offers a mild climate with minimal rainfall occurring across approximately 10 days throughout the month.

    Can I expect clear skies during my stay in March in Saint Thomas?

    March in Saint Thomas typically brings the highest number of clear sun hours, averaging about 9 hours daily.

    As the temperatures rise in Saint Thomas in April, how does it affect the amount of rainfall?

    April sees a moderate increase in rainfall in Saint Thomas, amounting to 77 mm (3.01 in) as temperatures begin to warm.

    What are the chances of getting wet during May in Saint Thomas?

    May in Saint Thomas tends to have a heightened chance of rain with 11 days anticipating precipitation.

    Is June typically a sunny month in Saint Thomas?

    June in Saint Thomas enjoys extended daylight hours with decreased chances of rain, offering plentiful sunshine.

    What is the likelihood of experiencing rain in Saint Thomas during July?

    July in Saint Thomas presents a rising probability of rain, with an expectation that 12 days could see precipitation.

    Can I look forward to warm weather if I visit Saint Thomas in August?

    Visiting Saint Thomas in August, you can anticipate experiencing the zenith of daytime warmth the island has to offer.

    With September seeing the warmest sea temperatures, is it a good time for swimming in Saint Thomas?

    September is an excellent month for swimming in Saint Thomas, as sea temperatures hit their annual maximum.

    Should I expect many rainy days in Saint Thomas during October?

    The expectation for rain in Saint Thomas during October is high, with an average of 13 days likely to be wet.

    What is the rain forecast like for November in Saint Thomas?

    November is the wettest month in Saint Thomas with the most rain, tallying approximately 14 days of precipitation.

    During December in Saint Thomas, should I be prepared for significant rainfall?

    While December in Saint Thomas does indicate a reduction in rain, you can still expect a fair number of rainy days totaling 13 days.

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