St Vincent & the Grenadines weather in September 2025

Expect daytime maximum temperatures of 29°C in St Vincent & the Grenadines in September and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 21 days with some rainfall and typically 270 mm of rainfall in the month.

• 29
  29°C max day temperature
• 7
  7 hours of sunshine per day
• 21
  21 days with some rainfall
• 23
  23°C min night temperature
• 12
  12 hours of daylight per day
• VH
  Very High heat & humidity
• 270
  270 mm of monthly rainfall
• 11
  11+ (Extreme) UV index
• 29
  29°C sea temperature

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St Vincent & the Grenadines by month

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The September weather guide for St Vincent & the Grenadines (Kingstown) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top St Vincent & the Grenadines destinations

Below are average maximum temperatures at popular countries, regions and places in St Vincent & the Grenadines in September. Select a holiday destination to see more weather parameters.

• 30
  Mayreau
• 30
  Palm Island
• 30
  Petit St Vincent
• 30
  Union Island
• 29
  Bequia
• 29
  Canouan
• 29
  Kingstown
• 29
  Mustique

All St Vincent & the Grenadines destinations

• Bequia
• Canouan
• Kingstown
• Mayreau
• Mustique
• Palm Island
• Petit St Vincent
• Union Island

Metric (°C / mm)  |  Imperial (°F / inches)

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St Vincent & the Grenadines September sunrise & sunset times

Browse the sunrise and sunset times for St Vincent & the Grenadines in September 2025. Select a month to view St Vincent & the Grenadines sunrise and sunset times for the next 12 months. The St Vincent & the Grenadines sunrise and sunset times shown below are for Kingstown.

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