Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In Basseterre, Saint Kitts and Nevis, September records the highest average temperatures, peaking at 28.7°C (83.7°F) and reaching a low of 27.7°C (81.9°F).Heat index
For September, the heat index is estimated at a hot 33°C (91.4°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Basseterre, in September, during 18.3 rainfall days, 50mm (1.97") of precipitation is typically accumulated. In Basseterre, during the entire year, the rain falls for 198.3 days and collects up to 386mm (15.2") of precipitation.Sea temperature
September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.
Daylight
In Basseterre, the average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 05:57 and sunset at 18:24. On the last day of September, in Basseterre, Saint Kitts and Nevis, sunrise is at 06:01 and sunset at 18:00 AST.
Sunshine
In Basseterre, the average sunshine in September is 10.1h.UV index
The months with the highest UV index in Basseterre are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Basseterre, Saint Kitts and Nevis. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 7 translates into these guidelines:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Notice! The reflection of water and sand increases the UV radiation significantly.
Frequently asked questions
What are the warmest months in Basseterre?
How hot is it in Basseterre in September?
What is the average humidity in September in Basseterre?
How many days does it rain in September in Basseterre?
What months are the sea warmest in Basseterre?
What is the sea water temperature in September in Basseterre?
How many hours of daylight does Basseterre have in September?
What time are sunrise and sunset in September in Basseterre?
How long on average sun shines in September in Basseterre?
When is the highest UV index in Basseterre?
What are the months with the lowest UV index in Basseterre?
What is the UV index intensity in September in Basseterre?
Average temperature in September
Basseterre, Saint Kitts and Nevis
- Average high temperature in September: 28.7°C
The warmest month (with the highest average high temperature) is September (28.7°C).
The month with the lowest average high temperature is March (25.8°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 March (24.9°C).
Average pressure in September
Basseterre, Saint Kitts and Nevis
- Average pressure in September: 1013.2mbar
The months with the highest atmospheric pressure are January and June (1016.2mbar).
The months with the lowest atmospheric pressure are October and November (1012.5mbar).
Average wind speed in September
Basseterre, Saint Kitts and Nevis
- Average wind speed in September: 20.4km/h
The windiest month (with the highest average wind speed) is July (26.3km/h).
The calmest month (with the lowest average wind speed) is October (19.6km/h).
Average humidity in September
Basseterre, Saint Kitts and Nevis
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March and December (75%).
Average rainfall in September
Basseterre, Saint Kitts and Nevis
- Average rainfall in September: 50mm
The wettest month (with the highest rainfall) is October (51mm).
The driest month (with the least rainfall) is February (15mm).
Average rainfall days in September
Basseterre, Saint Kitts and Nevis
- Average rainfall days in September: 18.3 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (12.6 days).
Average sea temperature in September
Basseterre, Saint Kitts and Nevis
- Average sea temperature in September: 29°C
The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (26°C).
Average daylight in September /
Average sunshine in September
Basseterre, Saint Kitts and Nevis
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Basseterre, Saint Kitts and Nevis
- Average sunshine days in September: 8.4 days
The month with the most sunshine days is June (11.2 days).
The month with the least sunshine days is May (7.6 days).
Average UV index in September
Basseterre, Saint Kitts and Nevis
- 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
Basseterre, Saint Kitts and Nevis
- Average cloud cover in September: 37
The months with the most cloud cover are May, June and July (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 32).
Average visibility in September
Basseterre, Saint Kitts and Nevis
- 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).
Basseterre, Saint Kitts and Nevis
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