Black River Weather in September
What's the weather like in Black River (St. Elizabeth) in September 2025?
The climate in Black River during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Black River and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 24°C (75°F) is normal.
| Daytime temperature | 31.8°C 89.2°F |
|---|---|
| Nightly temperature | 23.8°C 74.8°F |
| Average temperature | 27.8°C 82°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 263 mm 10.3 ins |
| Rainy days | 15 days |
| Sea temperature | 29.6°C 85.2°F |
| Humidity | 81% |
| Windspeed | 10.8kph 7 mph |
On average September is the 3rd wettest month of the year in Black River with around 263mm 10.3 inches of rain making it a very wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
September temperatures in Black River
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Black River in September 2025.
Other monthly averages
Best places to visit in September
Black River weather stats
| Hottest month: | July | 32.1°C 89.8°F |
|---|---|---|
| Driest month: | January | 59mm 2.3ins |
| Sunniest month: | April | 8.8hrs |
| Coldest month: | January | 29.8°C 85.6°F |
| Wettest month: | October | 316mm 12.4ins |
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