September weather forecast
Stubbs, Saint Vincent and the Grenadines

September

Weather in September

September signals a minor reduction in many climate parameters, yet retains the trend of relatively high rainfall. The showers fall slightly from August's peak to a still considerable 81mm (3.19"), but with lesser frequency. This dip, though minor, hints at the slow march towards the drier part of the year in Stubbs. A decrease in wind speed occurs, yet the gusts remain robust enough to proffer relief from the warm temperatures. Despite these fluctuations, both daylight and visibility stay fairly constant, allowing ample opportunity to bask in the beauty of the Caribbean setting.

Temperature

The month of September sees the highest average temperatures, reaching 28.8°C (83.8°F) at the peak and 28°C (82.4°F) at the low.

Heat index

The heat index value for September is estimated at a tropical 33°C (91.4°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

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

Rainfall

In Stubbs, in September, it is raining for 21.4 days, with typically 81mm (3.19") of accumulated precipitation. Throughout the year, there are 238.6 rainfall days, and 627mm (24.69") of precipitation is accumulated.

Daylight

In Stubbs, the average length of the day in September is 12h and 12min.
On the first day of September, 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 17:54 AST.

Sunshine

In Stubbs, the average sunshine in September 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 of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

What is the warmest month?
With its average high temperature of 28.8°C (83.8°F) and a low of 28°C (82.4°F), September is regarded as the warmest month.
Is it hot during September?
Stubbs in September has an average high-temperature of 28.8°C (83.8°F) and an average low-temperature of 28°C (82.4°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 33°C (91.4°F).
What is the average humidity in September?
In Stubbs, Saint Vincent and the Grenadines, the average relative humidity in September is 76%.
How many days does it rain in September?
In Stubbs, in September, it is raining for 21.4 days, with typically 81mm (3.19") of accumulated precipitation.
How many hours of daylight does Stubbs have in September?
In September, the average day length is 12h and 12min.
What time are sunrise and sunset in September?
In September, on the first day of the month, 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 17:54 AST.
How many hours of sunshine does Stubbs have in September?
The average sunshine duration in September is 10h.
What is the month with the highest UV index?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
What are the months with the lowest UV index?
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 September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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 - Stubbs, Saint Vincent and the Grenadines
Average temperature in September
Stubbs, 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).

Average pressure in September - Stubbs, Saint Vincent and the Grenadines
Average pressure in September
Stubbs, 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).

Average wind speed in September - Stubbs, Saint Vincent and the Grenadines
Average wind speed in September
Stubbs, 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).

Average humidity in September - Stubbs, Saint Vincent and the Grenadines
Average humidity in September
Stubbs, 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%).

Average rainfall in September - Stubbs, Saint Vincent and the Grenadines
Average rainfall in September
Stubbs, 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).

Average rainfall days in September - Stubbs, Saint Vincent and the Grenadines
Average rainfall days in September
Stubbs, 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).

Average daylight in September / Average sunshine in September - Stubbs, Saint Vincent and the Grenadines
Average daylight in September /
Average sunshine in September
Stubbs, 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).

Average sunshine days in September - Stubbs, Saint Vincent and the Grenadines
Average sunshine days in September
Stubbs, 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).

Average UV index in September - Stubbs, Saint Vincent and the Grenadines
Average UV index in September
Stubbs, 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).

Average cloud cover in September - Stubbs, Saint Vincent and the Grenadines
Average cloud cover in September
Stubbs, 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).

Average visibility in September - Stubbs, Saint Vincent and the Grenadines
Average visibility in September
Stubbs, 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).

englishespañol中文
Share