September weather forecast
Basse Terre, Guadeloupe

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Seascape of the Deshaies Bay in Basse Terre, Guadeloupe
Seascape of the Deshaies Bay in Basse Terre, Guadeloupe

Weather in September

September in Basse Terre, Guadeloupe marks the start of a transition from the very warm August temperatures. It fluctuates between 27.5°C to 29°C. Despite the slight temperature dip, the relative humidity persistently stays at 76%, the same as June and August. With the upcoming months promising a further drop in temperatures, September offerings are of a less severe summer season. Nevertheless, the high humidity level ensures a relatively warm and comfortable atmosphere throughout the month.

Temperature

The advent of September in Basse Terre, Guadeloupe, brings an average high-temperature of a still warm 29°C, almost identical to the preceding month. In Basse Terre, the average low-temperature during September nights tends to settle at a still warm 27.5°C, indicating a slight drop from the daytime peak.

Heat index

The heat index in September is appraised at a tropical 34°C. Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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 Basse Terre, the average relative humidity in September is 76%.

Rainfall

In Basse Terre, in September, it is raining for 22 days, with typically 103mm of accumulated precipitation. Throughout the year, in Basse Terre, there are 261.2 rainfall days, and 839mm of precipitation is accumulated.

Sea temperature

September is the month with the warmest seawater in Basse Terre, with an average sea temperature of 29.4°C.
Note: For any water activity, the surface water temperatures in the range of 25°C to 29°C are deemed excellent and incredibly pleasant for longer durations.

Daylight

The average length of the day in September 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 17:57 AST.

Sunshine

In Basse Terre, the average sunshine in September is 10h.

UV index

The months with the highest UV index in Basse Terre are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Basse Terre, Guadeloupe, are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. 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. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.
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FAQ

How hot is September in Basse Terre?

During September, Basse Terre experiences an average high-temperature of 29°C and a low-temperature of 27.5°C. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 34°C.

What is the average humidity in September in Basse Terre?

The average relative humidity in September in Basse Terre, Guadeloupe, is 76%.

How many days does it rain in September in Basse Terre?

In Basse Terre, in September, during 22 rainfall days, 103mm of precipitation is typically accumulated.

When is the sea warmest in Basse Terre?

With an average sea temperature of 29.4°C, September is the month with the warmest seawater.

How warm is the water in September in Basse Terre?

In September, the average sea temperature is 29.4°C. Water temperature between 25°C and 29°C is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Basse Terre have in September?

The average day length in September in Basse Terre, Guadeloupe, is 12h and 13min.

When are sunrise and sunset in September in Basse Terre?

On the first day of September in Basse Terre, Guadeloupe, 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 17:57 AST.

How many hours of sunshine does Basse Terre have in September?

In Basse Terre, Guadeloupe, the average sunshine duration in September is 10h.

What are the months with the highest UV index in Basse Terre?

The months with the highest UV index in Basse Terre, Guadeloupe, are January through December, with an average maximum UV index of 7.

What are the months with the lowest UV index in Basse Terre?

The months with the lowest UV index in Basse Terre are January through December, with an average maximum UV index of 7.

What is the UV index intensity in September in Basse Terre?

In September, the average daily maximum UV index in Basse Terre, Guadeloupe, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Basse Terre, Guadeloupe

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).

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Average pressure in September
Basse Terre, Guadeloupe

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).

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Average wind speed in September
Basse Terre, Guadeloupe

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).

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Average humidity in September
Basse Terre, Guadeloupe

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%).

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Average rainfall in September
Basse Terre, Guadeloupe

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).

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Average rainfall days in September
Basse Terre, Guadeloupe

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).

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Average sea temperature in September
Basse Terre, Guadeloupe

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).

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Average daylight in September /
Average sunshine in September
Basse Terre, Guadeloupe

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).

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Average sunshine days in September
Basse Terre, Guadeloupe

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).

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Average UV index in September
Basse Terre, Guadeloupe

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).

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Average cloud cover in September
Basse Terre, Guadeloupe

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).

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Average visibility in September
Basse Terre, Guadeloupe

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).

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Basse Terre, Guadeloupe

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