September weather forecastHarrismith, Barbados
September
Weather in September
September in Harrismith sees a drop in temperature down to 29°C (84.2°F) after the peak in August. The rainfall also reduces significantly to 106mm (4.17"), indicating an ending monsoon. The wind speed further diminishes, refraining from disrupting the calm serenity of the month. This month results in more clear skies than July and August, indicated by a decrease in cloud cover to 40%. Despite the reduction in daylight hours, visitors still have ample time for outdoor activities and exploration.Temperature
September, known for its average high temperature of 29°C (84.2°F) and an average low temperature of 27.7°C (81.9°F), is the warmest month in Harrismith.Heat index
In September, the average heat index is estimated at a tropical 34°C (93.2°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In September, the average relative humidity in Harrismith is 75%.Rainfall
In Harrismith, during September, the rain falls for 22.5 days and regularly aggregates up to 106mm (4.17") of precipitation. In Harrismith, during the entire year, the rain falls for 234.1 days and collects up to 709mm (27.91") of precipitation.Daylight
In September, the average length of the day is 12h and 12min.On the first day of September in Harrismith, sunrise is at 05:46 and sunset at 18:08. On the last day of the month, sunrise is at 05:46 and sunset at 17:48 AST.
Sunshine
The average sunshine in September is 9.2h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 7 in September suggests the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harrismith, Barbados
- Average high temperature in September: 29°C
The warmest month (with the highest average high temperature) is September (29°C).
The month with the lowest average high temperature is February (26.8°C).
- Average low temperature in September: 27.7°C
The month with the highest average low temperature is October (27.8°C).
The coldest month (with the lowest average low temperature) is February (25.7°C).
Average pressure in September
Harrismith, Barbados
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is June (1014.8mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).
Average wind speed in September
Harrismith, Barbados
- Average wind speed in September: 19.2km/h
The windiest months (with the highest average wind speed) are January and February (28.3km/h).
The calmest month (with the lowest average wind speed) is September (19.2km/h).
Average humidity in September
Harrismith, Barbados
- Average humidity in September: 75%
The months with the highest relative humidity are June, July, August and November (77%).
The month with the lowest relative humidity is February (74%).
Average rainfall in September
Harrismith, Barbados
- Average rainfall in September: 106mm
The wettest month (with the highest rainfall) is August (126mm).
The driest month (with the least rainfall) is February (13mm).
Average rainfall days in September
Harrismith, Barbados
- Average rainfall days in September: 22.5 days
The month with the highest number of rainy days is July (26.3 days).
The month with the least rainy days is February (11.3 days).
Average daylight in September /
Average sunshine in September
Harrismith, Barbados
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Harrismith, Barbados
- Average sunshine days in September: 5.4 days
The month with the most sunshine days is February (14.3 days).
The month with the least sunshine days is July (1.3 days).
Average UV index in September
Harrismith, Barbados
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Harrismith, Barbados
- Average cloud cover in September: 40
The month with the most cloud cover is June (Cloud cover 49).
The months with the least cloud cover are January and February (Cloud cover 37).
Average visibility in September
Harrismith, Barbados
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





