St. Lawrence Gap Weather in September

September in St. Lawrence Gap averages 30°C (86°F) during the day and 27°C (81°F) at night. Quite a bit of rainfall is typical this month, with around 150 mm (5.9 in) on average. An umbrella is a good idea.

Rainfall in St. Lawrence Gap in September

Historically, the month has about 16 days of rain, averaging 150 mm (5.9 in) in total. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in St. Lawrence Gap in September

In September, expect high temperatures in St. Lawrence Gap, with highs of 30°C (86°F) and lows of 27°C (81°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 27°C (81°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.

Sunshine in St. Lawrence Gap in September

There are approximately 233 hours of sunshine this month, resulting in mostly clear days.

Wind Speed in St. Lawrence Gap in September

Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in September

The water reaches 29°C (84°F) this month. It's on the warm side, which suits people who prefer that, but don't expect a cooling dip if the air temperature is also high.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May and December typically offer the best weather for St. Lawrence Gap.

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• January
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For a detailed overview over the year and the best time to visit Barbados, check out our St. Lawrence Gap's climate page.

St. Lawrence Gap Temperature in September

Min Temperature 27°C (81°F)  

Max Temperature 30°C (86°F)  

Water Temperature 29°C (84°F) *  

Chance of Rain 52%  

Precipitation 150 mm (5.9 in)  

Rainy days 16 days  

Humidity 80% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 233 hours *  

Percentage Sunshine *  

* Data from: Bridgetown, Barbados (10 KM, 6 Miles).

Daily Historical Temperatures

47-year average (1976-2025)

Based on our historical records, temperatures in St. Lawrence Gap typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).

Average temperatures in September

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Historical weather for St. Lawrence Gap in September

Browse day-by-day weather records for St. Lawrence Gap spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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St. Lawrence Gap historical weather extremes in September

The extremes listed below come from historical weather data collected in St. Lawrence Gap from 2002 through 2025.

• The hottest September day on record in St. Lawrence Gap reached 36°C (97°F) (September 27, 2016).
• The lowest daytime temperature in September was 26°C (79°F), recorded on September 21, 2010.
• St. Lawrence Gap registered its coldest September night on September 18, 2022, with temperatures dropping to 22°C (72°F).

What to Wear in St. Lawrence Gap in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 29°C (84°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in St. Lawrence Gap in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Barbados, check out our St. Lawrence Gap's climate page.

More climate data for St. Lawrence Gap

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full St. Lawrence Gap climate overview or explore weather in Barbados.