Black River Weather in September
Thinking of visiting Black River in September? Expect very high temperatures reaching 31°C (88°F) during the day, dropping to 25°C (77°F) at night, and be prepared for the wettest month of the year.
Rainfall in Black River in September
With the most rainfall occurring this month, it's practical to keep an umbrella handy for sudden downpours. Rain is expected on roughly 14 days, totalling around 129 mm (5.1 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Black River in September
September in Black River brings very high temperatures, with highs of 31°C (88°F) and nights around 25°C (77°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay 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 Black River in September
Expect sunny days throughout the month, with an estimated 210 hours of sunshine. This makes it a pleasant time to visit Black River.September in Black River has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, 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 Black River's climate page.
Black River Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Chance of Rain
48%
Precipitation
129 mm (5.1 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 Black River 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 Black River in September
Browse day-by-day weather records for Black River spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Black River historical weather extremes in September
Based on 19 years of weather observations in Black River between 2006 and 2025, these are the recorded extremes.
- On September 12, 2009, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 26°C (79°F), recorded on September 28, 2010.
- Black River registered its coldest September night on September 16, 2021, with temperatures dropping to 22°C (72°F).
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 Black River in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Black River 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 Black River's climate page.
Temperature Rainfall Sunshine Humidity
See the full Black River climate overview or explore weather in Jamaica.
