September weather forecast
Cheltenham, Saint Vincent and the Grenadines

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Weather in September

September witnesses a slow decline in rainfall with approximately 81mm (3.19") of precipitation. The weather remains similar to August's with daytime temperatures peaking at around 28.8°C (83.8°F), the highest in the year. A decline to 20.6km/h (12.8mph) in wind speed also marks September as the least windy month of the entire year. Fortunately, the city receives about an average of 10 sunshine hours to grace the horizon daily.

Temperature

In Cheltenham, Saint Vincent and the Grenadines, temperatures reach their average annual highs in September, measuring 28.8°C (83.8°F) and a minimum average of 28°C (82.4°F).

Heat index

In September, the heat index is calculated to be a hot 33°C (91.4°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

The average relative humidity in September in Cheltenham is 76%.

Rainfall

In Cheltenham, in September, it is raining for 21.4 days, with typically 81mm (3.19") of accumulated precipitation. In Cheltenham, Saint Vincent and the Grenadines, during the entire year, the rain falls for 238.6 days and collects up to 627mm (24.69") of precipitation.

Daylight

The average length of the day in September is 12h and 12min.
On the first day of September in Cheltenham, sunrise is at 05:53 and sunset at 18:15. On the last day of the month, sunrise is at 05:53 and sunset at 17:55 AST.

Sunshine

The average sunshine in September in Cheltenham, Saint Vincent and the Grenadines, is 10h.

UV index

The months with the highest UV index in Cheltenham, Saint Vincent and the Grenadines, 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 of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, a daily UV index of 7 turns into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What is the warmest month in Cheltenham?

September is the warmest month of the year, registering average temperatures as high as 28.8°C (83.8°F) and as low as 28°C (82.4°F).

How hot does it get in Cheltenham in September?

The high-temperature in Cheltenham during September is 28.8°C (83.8°F) and the low-temperature is 28°C (82.4°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is calculated to be 33°C (91.4°F).

What is the average humidity in September in Cheltenham?

In September, the average relative humidity in Cheltenham, Saint Vincent and the Grenadines, is 76%.

How many days does it rain in September in Cheltenham?

In September, in Cheltenham, Saint Vincent and the Grenadines, the rain falls for 21.4 days. Throughout September, 81mm (3.19") of precipitation is accumulated.

What is the average length of the day in September in Cheltenham?

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

When are sunrise and sunset in September in Cheltenham?

On the first day of September in Cheltenham, Saint Vincent and the Grenadines, sunrise is at 05:53 and sunset at 18:15. On the last day of the month, sunrise is at 05:53 and sunset at 17:55 AST.

How many hours of sunshine does Cheltenham have in September?

The average sunshine duration in September in Cheltenham is 10h.

What are the months with the highest UV index in Cheltenham?

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

What is the month with the lowest UV index in Cheltenham?

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

How high is the UV index in September in Cheltenham?

In September, the average daily maximum UV index in Cheltenham, Saint Vincent and the Grenadines, is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.

Average temperature in September
Cheltenham, Saint Vincent and the Grenadines

Average temperature in September - Cheltenham, Saint Vincent and the Grenadines
  • Average high temperature in September: 28.8°C

The warmest month (with the highest average high temperature) is September (28.8°C).
The month with the lowest average high temperature is February (26.5°C).

  • Average low temperature in September: 28°C

The month with the highest average low temperature is September (28°C).
The coldest month (with the lowest average low temperature) is February (25.7°C).

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Average pressure in September
Cheltenham, Saint Vincent and the Grenadines

Average pressure in September - Cheltenham, Saint Vincent and the Grenadines
  • Average pressure in September: 1012.2mbar

The month with the highest atmospheric pressure is June (1014.5mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).

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Average wind speed in September
Cheltenham, Saint Vincent and the Grenadines

Average wind speed in September - Cheltenham, Saint Vincent and the Grenadines
  • Average wind speed in September: 20.6km/h

The windiest month (with the highest average wind speed) is February (29.3km/h).
The calmest month (with the lowest average wind speed) is September (20.6km/h).

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Average humidity in September
Cheltenham, Saint Vincent and the Grenadines

Average humidity in September - Cheltenham, Saint Vincent and the Grenadines
  • Average humidity in September: 76%

The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is February (75%).

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Average rainfall in September
Cheltenham, Saint Vincent and the Grenadines

Average rainfall in September - Cheltenham, Saint Vincent and the Grenadines
  • Average rainfall in September: 81mm

The wettest month (with the highest rainfall) is August (94mm).
The driest month (with the least rainfall) is February (23mm).

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Average rainfall days in September
Cheltenham, Saint Vincent and the Grenadines

Average rainfall days in September - Cheltenham, Saint Vincent and the Grenadines
  • Average rainfall days in September: 21.4 days

The month with the highest number of rainy days is August (24.3 days).
The month with the least rainy days is February (14.8 days).

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Average daylight in September /
Average sunshine in September
Cheltenham, Saint Vincent and the Grenadines

Average daylight in September / Average sunshine in September - Cheltenham, Saint Vincent and the Grenadines
  • 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 24min).

  • 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 24min).

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Average sunshine days in September
Cheltenham, Saint Vincent and the Grenadines

Average sunshine days in September - Cheltenham, Saint Vincent and the Grenadines
  • Average sunshine days in September: 5.4 days

The months with the most sunshine days are February and March (9.3 days).
The month with the least sunshine days is July (1.7 days).

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Average UV index in September
Cheltenham, Saint Vincent and the Grenadines

Average UV index in September - Cheltenham, Saint Vincent and the Grenadines
  • 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
Cheltenham, Saint Vincent and the Grenadines

Average cloud cover in September - Cheltenham, Saint Vincent and the Grenadines
  • Average cloud cover in September: 38

The month with the most cloud cover is July (Cloud cover 46).
The months with the least cloud cover are January and February (Cloud cover 37).

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Average visibility in September
Cheltenham, Saint Vincent and the Grenadines

Average visibility in September - Cheltenham, Saint Vincent and the Grenadines
  • 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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Cheltenham, Saint Vincent and the Grenadines

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