Day
31 °C
Night
23 °C
Sea
29 °C
Precipitation
130 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
77 %
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The average temperature for the week of 4 September 2023 - 10 September 2023 was 31 °C (88 °F) during the day and 26 °C (79 °F) during the night. These temperatures are roughly same as the long-time average for Saint Thomas, being 31 °C (88 °F) for daily temperatures and 24 °C (75 °F) for night temperatures. The average temperatures during different times of day (local time) were following: 7am 27 °C (81 °F), 10am 30 °C (86 °F), 1pm 31 °C (88 °F), 4pm 30 °C (86 °F), 7pm 28 °C (82 °F), 10pm 27 °C (81 °F).
The week had 1 day without rain, 3 days with light rain and 3 days with moderate rain. During the whole week, total of 15 mm (0.59 in) of precipitation was observed, which is below the long term average for Saint Thomas, which is 28 mm (1.10 in). During the daytime (from dawn to dusk), there was 18 % cloud coverage on average.
An average wind speed of 4.3 m/s was recorded. The prevailing winds blew from the South-East and East. The air pressure was 1011 hpa - 1017 hpa. The average air humidity was 76 % in Saint Thomas.
On average, there were 8 hours clear skies, 1.5 hours partially overcast skies and 3 hours rainy weather during the daytime (from dawn to dusk). Average time of sunrise was 06:06, average time of sunset was 18:29.
Saint Thomas (U.S. Virgin Islands) in general has a tropical climate. Temperatures during the day are in the range from 28 °C (82 °F) in January to 31 °C (88 °F) in August. Temperatures during the night go from 21 °C (70 °F) in February to 24 °C (75 °F) in July. The highest sea temperatures in Saint Thomas are in September with 29 °C (84 °F) and the lowest in February with 26 °C (79 °F). The least rainy month in Saint Thomas is March with its 8 days of rain, the rainiest month is November, when it rains 14 days.
The day temperature is on its minimum in Saint Thomas, while the sea temperature continues to descent, its value is 26 °C (79 °F). The number of rainy days descents similarly to the previous month, with its value being 10 days, and the descent of the rainfall amount can be observed as well, its value is 67 mm (2.65 in). The night temperature continues to descent, with its value being 21 °C (70 °F). The number of sun hours (without clouds) rise's start could be observed, the value of this measure is 8 hours.
The minimum of the sea temperature is observable, with its value being 26 °C (79 °F) in Saint Thomas, and the night temperature is on its minimum as well in this month. The rainfall amount is on its minimum, its value is 43 mm (1.70 in), while the number of rainy days continues to descent, the value of this measure is 10 days. The number of sun hours (without clouds) continues to rise, with its value of 8 hours.
The number of rainy days reaches its minimum, with its value of 8 days in Saint Thomas, while the rainfall amount rise's start could be observed, its value is 50 mm (1.97 in). The number of sun hours (without clouds) reaches its maximum, with its value being 9 hours. The minimum of the humidity can be noticed in this month.
The beginning of the rise of the day temperature could be noticed in Saint Thomas, and the sea temperature rise's start could be observed too, with its value of 27 °C (80 °F). The number of rainy days starts to rise, while the rise of the rainfall amount can be observed, with its value of 77 mm (3.01 in). The night temperature starts to rise in this month.
The sea temperature rises similarly to the previous month, its value is 27 °C (81 °F) in Saint Thomas, and the rise of the day temperature can be observed too, the value of this measure is 30 °C (85 °F). The number of rainy days rises similarly to the previous month, the value of this measure is 11 days, and the rainfall amount continues to rise too, with its value being 109 mm (4.30 in). The rise of the night temperature can be observed, the value of this measure is 23 °C (73 °F). The number of sun hours (without clouds) starts to descent, the value of this measure is 8 hours.
The day temperature continues to rise, the value of this measure is 30 °C (87 °F) in Saint Thomas, and the rise of the sea temperature can be observed too, with its value being 28 °C (82 °F). The beginning of the descent of the number of rainy days could be noticed, with its value being 10 days, and the beginning of the descent of the rainfall amount could be noticed as well, with its value of 77 mm (3.05 in). The maximum of the day length is observable in this month. The night temperature rises similarly to the previous month, its value is 24 °C (74 °F).
The number of rainy days starts to rise, with its value being 12 days in Saint Thomas, and the beginning of the rise of the rainfall amount could be noticed as well, with its value of 88 mm (3.45 in). The beginning of the rise of the number of sun hours (without clouds) could be noticed in this month. The night temperature reaches its maximum, its value is 24 °C (75 °F). The wind speed is on its maximum, with its value being 5.
The number of rainy days continues to rise, its value is 12 days in Saint Thomas, and the rainfall amount rises similarly to the previous month too, the value of this measure is 101 mm (3.97 in). The maximum of the day temperature is observable, its value is 31 °C (88 °F).
The rise of the rainfall amount can be observed, the value of this measure is 119 mm (4.69 in) in Saint Thomas. The number of sun hours (without clouds) starts to descent, with its value being 8 hours. The maximum of the sea temperature is observable, its value is 29 °C (84 °F).
The number of rainy days starts to rise, its value is 13 days in Saint Thomas, while the rainfall amount continues to rise, the value of this measure is 130 mm (5.13 in). The wind speed is on its minimum in October. The maximum of the humidity can be noticed in this month.
The sea temperature starts to descent, the value of this measure is 28 °C (82 °F) in Saint Thomas, and the day temperature starts to descent too in this month. The maximum of the number of rainy days can be noticed, its value is 14 days, and the maximum of the rainfall amount is observable too, with its value of 134 mm (5.29 in). The night temperature starts to descent in this month. The minimum of the number of sun hours (without clouds) can be noticed, its value is 7 hours.
The descent of the sea temperature can be observed in Saint Thomas, and the day temperature continues to descent too, with its value being 28 °C (83 °F). The beginning of the descent of the number of rainy days could be noticed, with its value being 13 days, and the beginning of the descent of the rainfall amount could be noticed too in December. The night temperature descents similarly to the previous month, its value is 22 °C (71 °F). The day length is on its minimum, with its value of 11 hours.
In Saint Thomas in January, we can expect 10 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.4 days of the week, or in general - 34 % days.
No, there is no wet season in February in Saint Thomas - you can expect 10 days of rain during the month.
In March in Saint Thomas, the average daily temperatures will be 28 °C (83 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
In April in Saint Thomas, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
The sea will reach 27 °C (81 °F) in May in Saint Thomas. Seems like an ideal temperature for swimming, you can stay in the sea for a long time and enjoy it as well.
In Saint Thomas in June, there are ideal conditions for a vacation. The daily temperatures in this month reach pleasant 30 °C (87 °F). The seawater temperature reaches ideal 28 °C (82 °F). At night, temperatures hover around a pleasant 24 °C (74 °F). There are only 10 days of rain in the whole month, so you can leave your umbrella at home.
The average night temperature in July in Saint Thomas is 24 °C (75 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.
There is an average length of sunshine of 9 hours per day in Saint Thomas in August.
An average wind scale that can be expected in September in Saint Thomas is 4.
No, October is not a dry month in Saint Thomas, expect rain approximately 13 days in a month.
In December in Saint Thomas, expect humidity around 76 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.