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 (81.5°F) to 29°C (84.2°F). 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

September denotes a minimal variation in the average high-temperature to a still moderately hot 29°C (84.2°F) from August's 29.2°C (84.6°F). September sees a slight dip to an average low temperature of 27.5°C (81.5°F) from the daytime highs.

Heat index

The heat index value for September is estimated at a tropical 34°C (93.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

In Basse Terre, the average relative humidity in September is 76%.

Rainfall

In September, in Basse Terre, the rain falls for 22 days. Throughout September, 103mm (4.06") of precipitation is accumulated. In Basse Terre, Guadeloupe, 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 in Basse Terre is September, with an average sea temperature of 29.4°C (84.9°F).
Note: For swimming, diving, and enjoying other water activities, the range of 25°C (77°F) to 29°C (84.2°F) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of September in Basse Terre, 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

The average sunshine in September in Basse Terre is 10h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 7 suggests this advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
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Frequently asked questions

How hot is it in Basse Terre in September?

In Basse Terre, in September, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 27.5°C (81.5°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 34°C (93.2°F).

What is the average humidity in September in Basse Terre?

In Basse Terre, the average relative humidity in September is 76%.

How much does it rain in Basse Terre in September?

In Basse Terre, Guadeloupe, in September, during 22 rainfall days, 103mm (4.06") of precipitation is typically accumulated.

What is the month with the warmest sea water in Basse Terre?

With an average sea temperature of 29.4°C (84.9°F), September is the month with the warmest seawater in Basse Terre, Guadeloupe.

How warm is the water in September in Basse Terre?

In September, the average sea temperature in Basse Terre, Guadeloupe, is 29.4°C (84.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) 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?

In September, the average day length is 12h and 13min.

When is the sunrise / sunset in September in Basse Terre?

In September, on the first day of the month, sunrise is at 05:53 and sunset at 18:19. On the last day of the month, in Basse Terre, Guadeloupe, sunrise is at 05:56 and sunset at 17:56 AST.

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

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

When is the highest UV index in Basse Terre?

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

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.

How high is the UV index in September in Basse Terre?

In Basse Terre, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

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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