September weather forecast
Saint Lucia Estuary, South Africa

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Weather in September

In September, Saint Lucia Estuary transitions into spring, marking the advent of warmth. As the month progresses, the mercury rises, indicating the arrival of warmer months. With the increase in temperature, both air and sea regain warmth. Despite this, the amount of rainfall remains almost unaltered from August. The promise of the upcoming sunny days and blue skies makes September ideal for outdoor explorations.

Temperature

The shift into September reveals an average high-temperature of a moderately hot 23.3°C (73.9°F), closely mirroring August's climate. An average nighttime temperature of 19.3°C (66.7°F) marks September.

Humidity

In September, the average relative humidity in Saint Lucia Estuary is 74%.

Rainfall

In Saint Lucia Estuary, South Africa, during September, the rain falls for 13.3 days and regularly aggregates up to 31mm (1.22") of precipitation. In Saint Lucia Estuary, during the entire year, the rain falls for 196.2 days and collects up to 699mm (27.52") of precipitation.

Sea temperature

In Saint Lucia Estuary, South Africa, the average seawater temperature in September is 22.6°C (72.7°F).
Note: If someone is sensitive to cold, the enjoyment of swimming in 22.6°C (72.7°F) water hinges on factors like sunshine, wind, and the current air temperature. (For context: Olympic swimming competitions are held in water temperatures of 25°C (77°F) to 28°C (82.4°F).)

Daylight

In September, the average length of the day in Saint Lucia Estuary, South Africa, is 11h and 56min.
On the first day of September, sunrise is at 06:03 and sunset at 17:36. On the last day of the month, sunrise is at 05:29 and sunset at 17:50 SAST.

Sunshine

The average sunshine in September is 6.9h.

UV index

July, September and October, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a regular UV index of 5 translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Attention! The combination of sand and water reflections enhances UV ray intensity.

Frequently asked questions

What are September temperatures in Saint Lucia Estuary?

In Saint Lucia Estuary, in September, the average high-temperature is 23.3°C (73.9°F), and the average low-temperature is 19.3°C (66.7°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in February is estimated at 30°C (86°F).

What is the average humidity in September in Saint Lucia Estuary?

In September, the average relative humidity is 74%.

How many days does it rain in September in Saint Lucia Estuary?

In Saint Lucia Estuary, in September, it is raining for 13.3 days, with typically 31mm (1.22") of accumulated precipitation.

What is the water temperature in September in Saint Lucia Estuary?

In September, the average sea temperature in Saint Lucia Estuary is 22.6°C (72.7°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 22.6°C (72.7°F) water.

What is the average length of the day in September in Saint Lucia Estuary?

In September, the average day length is 11h and 56min.

When are sunrise and sunset in September in Saint Lucia Estuary?

In September, on the first day of the month, sunrise is at 06:03 and sunset at 17:36. On the last day of the month, in Saint Lucia Estuary, South Africa, sunrise is at 05:29 and sunset at 17:50 SAST.

How long on average sun shines in September in Saint Lucia Estuary?

In Saint Lucia Estuary, the average sunshine duration in September is 6.9h.

What is the month with the lowest UV index in Saint Lucia Estuary?

July, September and October, with an average maximum UV index of 5, are months with the lowest UV index.

How high is the UV index in September in Saint Lucia Estuary?

In Saint Lucia Estuary, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.

Average temperature in September
Saint Lucia Estuary, South Africa

Average temperature in September - Saint Lucia Estuary, South Africa
  • Average high temperature in September: 23.3°C

The warmest month (with the highest average high temperature) is February (27.2°C).
The month with the lowest average high temperature is July (21.9°C).

  • Average low temperature in September: 19.3°C

The month with the highest average low temperature is February (23.7°C).
The coldest month (with the lowest average low temperature) is July (18°C).

Average pressure in September
Saint Lucia Estuary, South Africa

Average pressure in September - Saint Lucia Estuary, South Africa
  • Average pressure in September: 1019mbar

The month with the highest atmospheric pressure is July (1023mbar).
The month with the lowest atmospheric pressure is January (1013.4mbar).

Average wind speed in September
Saint Lucia Estuary, South Africa

Average wind speed in September - Saint Lucia Estuary, South Africa
  • Average wind speed in September: 24.9km/h

The windiest month (with the highest average wind speed) is October (25.2km/h).
The calmest month (with the lowest average wind speed) is March (20.2km/h).

Average humidity in September
Saint Lucia Estuary, South Africa

Average humidity in September - Saint Lucia Estuary, South Africa
  • Average humidity in September: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is June (68%).

Average rainfall in September
Saint Lucia Estuary, South Africa

Average rainfall in September - Saint Lucia Estuary, South Africa
  • Average rainfall in September: 31mm

The wettest month (with the highest rainfall) is December (90mm).
The driest month (with the least rainfall) is July (26mm).

Average rainfall days in September
Saint Lucia Estuary, South Africa

Average rainfall days in September - Saint Lucia Estuary, South Africa
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is December (21.8 days).
The month with the least rainy days is June (9.6 days).

Average sea temperature in September
Saint Lucia Estuary, South Africa

Average sea temperature in September - Saint Lucia Estuary, South Africa
  • Average sea temperature in September: 22.6°C

The best month for swimming (with the highest average sea temperature) is February (27.2°C).
The coldest month (with the lowest average sea temperature) is August (21.7°C).

Average daylight in September /
Average sunshine in September
Saint Lucia Estuary, South Africa

Average daylight in September / Average sunshine in September - Saint Lucia Estuary, South Africa
  • Average daylight in September: 11h and 5min

The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 24min).

  • Average sunshine in September: 6h and 5min

The month with the most sunshine is February (Average sunshine: 8h and 48min).
The month with the least sunshine is April (Average sunshine: 5h and 48min).

Average sunshine days in September
Saint Lucia Estuary, South Africa

Average sunshine days in September - Saint Lucia Estuary, South Africa
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is June (18.3 days).
The month with the least sunshine days is November (6.4 days).

Average UV index in September
Saint Lucia Estuary, South Africa

Average UV index in September - Saint Lucia Estuary, South Africa
  • Average UV index in September: 5

The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are July, September and October (UV index 5).

Average cloud cover in September
Saint Lucia Estuary, South Africa

Average cloud cover in September - Saint Lucia Estuary, South Africa
  • Average cloud cover in September: 41

The months with the most cloud cover are November and December (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 22).

Average visibility in September
Saint Lucia Estuary, South Africa

Average visibility in September - Saint Lucia Estuary, South Africa
  • 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).

Saint Lucia Estuary, South Africa

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