September weather forecast
Savannes, Saint Lucia

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Savannes, Saint Lucia, with an average temperature fluctuating between 29.5°C (85.1°F) and 27.6°C (81.7°F).

Temperature

The warmest period is usually observed in September and October, with the average high-temperature peaking at 29.5°C (85.1°F).

Heat index

September's heat index is calculated to be a fiery hot 35°C (95°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for 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.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in September in Savannes is 75%.

Rainfall

In Savannes, in September, it is raining for 19.5 days, with typically 64mm (2.52") of accumulated precipitation. In Savannes, during the entire year, the rain falls for 232.4 days and collects up to 542mm (21.34") of precipitation.

Daylight

The average length of the day in September in Savannes is 12h and 12min.
On the first day of September, sunrise is at 05:52 and sunset at 18:14. On the last day of the month, sunrise is at 05:53 and sunset at 17:53 AST.

Sunshine

In September, the average sunshine is 10.1h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Savannes. The months with the lowest UV index in Savannes, Saint Lucia, are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 7 in September translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

What month is the hottest in Savannes?
In Savannes, September and October are characterised by the peak of temperatures, recording an average high of 29.5°C (85.1°F).
How hot is it in Savannes in September?
The average high-temperature and low-temperature in Savannes, Saint Lucia, during September are 29.5°C (85.1°F) and 27.6°C (81.7°F) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 35°C (95°F).
What is the average humidity in September in Savannes?
In September, the average relative humidity in Savannes is 75%.
How much does it rain in Savannes in September?
In Savannes, in September, it is raining for 19.5 days, with typically 64mm (2.52") of accumulated precipitation.
How many hours of daylight does Savannes have in September?
In Savannes, the average day length in September is 12h and 12min.
What time are sunrise and sunset in September in Savannes?
On the first day of September, sunrise is at 05:52 and sunset at 18:14. On the last day of the month, sunrise is at 05:53 and sunset at 17:53 AST.
How many hours of sunshine does Savannes have in September?
The average sunshine duration in September is 10.1h.
What is the month with the highest UV index in Savannes?
January through December, with an average maximum UV index of 7, are months with the highest UV index in Savannes, Saint Lucia.
When is the lowest UV index in Savannes?
The months with the lowest UV index are January through December, with an average maximum UV index of 7.
What is the UV index intensity in September in Savannes?
In Savannes, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Savannes, Saint Lucia
Average temperature in September
Savannes, Saint Lucia
  • Average high temperature in September: 29.5°C

The warmest months (with the highest average high temperature) are September and October (29.5°C).
The month with the lowest average high temperature is February (26.8°C).

  • Average low temperature in September: 27.6°C

The month with the highest average low temperature is September (27.6°C).
The coldest month (with the lowest average low temperature) is February (25.3°C).

Average pressure in September - Savannes, Saint Lucia
Average pressure in September
Savannes, Saint Lucia
  • Average pressure in September: 1012.5mbar

The month with the highest atmospheric pressure is June (1014.9mbar).
The month with the lowest atmospheric pressure is November (1011.3mbar).

Average wind speed in September - Savannes, Saint Lucia
Average wind speed in September
Savannes, Saint Lucia
  • Average wind speed in September: 18.3km/h

The windiest month (with the highest average wind speed) is February (26.9km/h).
The calmest month (with the lowest average wind speed) is September (18.3km/h).

Average humidity in September - Savannes, Saint Lucia
Average humidity in September
Savannes, Saint Lucia
  • Average humidity in September: 75%

The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are January and February (74%).

Average rainfall in September - Savannes, Saint Lucia
Average rainfall in September
Savannes, Saint Lucia
  • Average rainfall in September: 64mm

The wettest month (with the highest rainfall) is October (73mm).
The driest month (with the least rainfall) is February (18mm).

Average rainfall days in September - Savannes, Saint Lucia
Average rainfall days in September
Savannes, Saint Lucia
  • Average rainfall days in September: 19.5 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is February (15 days).

Average daylight in September / Average sunshine in September - Savannes, Saint Lucia
Average daylight in September /
Average sunshine in September
Savannes, Saint Lucia
  • Average daylight in September: 12h and 1min

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 18min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in September - Savannes, Saint Lucia
Average sunshine days in September
Savannes, Saint Lucia
  • Average sunshine days in September: 7.1 days

The month with the most sunshine days is March (9.1 days).
The month with the least sunshine days is July (3.6 days).

Average UV index in September - Savannes, Saint Lucia
Average UV index in September
Savannes, Saint Lucia
  • 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 - Savannes, Saint Lucia
Average cloud cover in September
Savannes, Saint Lucia
  • Average cloud cover in September: 37

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 35).

Average visibility in September - Savannes, Saint Lucia
Average visibility in September
Savannes, Saint Lucia
  • 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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