Duncans Weather in September
September in Duncans brings very high temperatures around 31°C (88°F) during the day, dropping to 25°C (77°F) at night, with the most rainfall of the year.
Rainfall in Duncans in September
This month brings the peak rainfall of the year, with heavy showers. Be sure to have a poncho ready to manage the downpours. Historically, the month has about 14 days of rain, averaging 172 mm (6.8 in) in total. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Duncans in September
September in Duncans sees highs of 31°C (88°F) and lows of 25°C (77°F) overnight. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Duncans in September
With approximately 210 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.September in Duncans can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Jamaica, check out our Duncans's climate page.
Duncans Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Chance of Rain
48%
Precipitation
172 mm (6.8 in)
Rainy days
14 days
Humidity
78% *
Sunshine
210 hours *
Percentage Sunshine
*
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Duncans typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Duncans in September
Browse day-by-day weather records for Duncans spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Duncans historical weather extremes in September
The extremes listed below come from historical weather data collected in Duncans from 2006 through 2025.
- The warmest day in September was on September 12, 2009, with a maximum of 35°C (95°F).
- The lowest daytime temperature in September was 26°C (79°F), recorded on September 28, 2010.
- Nighttime temperatures dropped to 22°C (72°F) on September 16, 2021, marking the coldest September night on record.
- The wettest September day on record brought 96 mm (3.8 in) of precipitation to Duncans (September 29, 2007).
Best Places in Jamaica in September
Find out more about the weather in Jamaica and which places have the best travel conditions in this month. See all of Jamaica in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Duncans 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Duncans in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Jamaica, check out our Duncans's climate page.
Temperature Rainfall Sunshine Humidity
See the full Duncans climate overview or explore weather in Jamaica.
