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Saint Thomas Weather in September
September in Saint Thomas typically sees daytime highs of 23°C (73°F) and nighttime lows of 14°C (57°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Saint Thomas in September
Records from the past 30 years suggest around 11 days of rain, with 91 mm (3.6 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Saint Thomas in September
September is a good time to be in Saint Thomas. Days are excellent, reaching 23°C (73°F), with nights around 14°C (57°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 14°C (57°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. August and September typically offer the best weather for Saint Thomas.
Saint Thomas Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
23°C (73°F)
Chance of Rain
35%
Precipitation
91 mm (3.6 in)
Rainy days
11 days
Saint Thomas Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint Thomas - and find the best time to visit.
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Saint Thomas in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags.
What To Do in Saint Thomas in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Saint Thomas 3-Day Forecast
More climate data for Saint Thomas
See the full Saint Thomas climate overview or explore weather in Canada.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) Bucket list
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