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
With the advent of September, Basse Terre's high-temperatures adjust to a still warm 29°C (84.2°F), closely aligning with the preceding month. Basse Terre, in September, registers an average low temperature of 27.5°C (81.5°F), showing a minute reduction from daily highs.Heat index
The heat index for September is calculated to be a hot 34°C (93.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Basse Terre, in September, during 22 rainfall days, 103mm (4.06") of precipitation is typically accumulated. In Basse Terre, during the entire year, the rain falls for 261.2 days and collects up to 839mm (33.03") of precipitation.Sea temperature
The month with the warmest seawater is September, with an average sea temperature of 29.4°C (84.9°F).Note: Swimming, diving, and other water activities in the temperature range of 25°C (77°F) to 29°C (84.2°F) are perceived as very enjoyable and comfortable for prolonged durations.
Daylight
In September, the average length of the day is 12h and 13min.On the first day of September, sunrise is at 05:53 and sunset at 18:19. On the last day of the month, sunrise is at 05:56 and sunset at 17:56 AST.
Sunshine
In Basse Terre, the average sunshine in September is 10h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 7 during September, leads to the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Beware! Reflecting off water and sand, UV rays are much stronger.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How many days does it rain in September?
When is the sea warmest?
What is the water temperature in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Basse Terre have in September?
What are the months with the highest UV index?
When is the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Basse Terre, Guadeloupe
- Average high temperature in September: 29°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is March (26.3°C).
- Average low temperature in September: 27.5°C
The month with the highest average low temperature is September (27.5°C).
The coldest month (with the lowest average low temperature) is February (24.8°C).
Average pressure in September
Basse Terre, Guadeloupe
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is June (1016mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Basse Terre, Guadeloupe
- Average wind speed in September: 18.9km/h
The windiest month (with the highest average wind speed) is July (24km/h).
The calmest month (with the lowest average wind speed) is October (18.1km/h).
Average humidity in September
Basse Terre, Guadeloupe
- Average humidity in September: 76%
The months with the highest relative humidity are May, July, August and November (77%).
The months with the lowest relative humidity are January, February and March (75%).
Average rainfall in September
Basse Terre, Guadeloupe
- Average rainfall in September: 103mm
The wettest month (with the highest rainfall) is August (119mm).
The driest month (with the least rainfall) is February (31mm).
Average rainfall days in September
Basse Terre, Guadeloupe
- Average rainfall days in September: 22 days
The month with the highest number of rainy days is July (25.3 days).
The month with the least rainy days is March (16.9 days).
Average sea temperature in September
Basse Terre, Guadeloupe
- Average sea temperature in September: 29.4°C
The best month for swimming (with the highest average sea temperature) is September (29.4°C).
The coldest month (with the lowest average sea temperature) is February (26.7°C).
Average daylight in September /
Average sunshine in September
Basse Terre, Guadeloupe
- 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 12min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Basse Terre, Guadeloupe
- Average sunshine days in September: 4.9 days
The month with the most sunshine days is March (9.3 days).
The month with the least sunshine days is July (0.7 days).
Average UV index in September
Basse Terre, Guadeloupe
- 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
Basse Terre, Guadeloupe
- Average cloud cover in September: 39
The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is February (Cloud cover 35).
Average visibility in September
Basse Terre, Guadeloupe
- 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).
Basse Terre, Guadeloupe
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