Gros Islet weather in August 2025

Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Gros Islet in August. Check more long-term weather averages for Gros Islet in August before you book your next holiday to St Lucia in 2025/2026.

• 30
  30°C max day temperature
• 8
  8 hours of sunshine per day
• 20
  20 days with some rainfall
• 24
  24°C min night temperature
• 13
  13 hours of daylight per day
• VH
  Very High heat & humidity
• 216
  216 mm of monthly rainfall
• 11
  11+ (Extreme) UV index
• 28
  28°C sea temperature

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Gros Islet by month

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The August weather guide for St Lucia (Gros Islet) 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.

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

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Gros Islet August sunrise & sunset times

Browse the sunrise and sunset times for Gros Islet in August 2025. Select a month to view Gros Islet sunrise and sunset times for the next 12 months.

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