September in Island Harbour sees daytime temperatures around 30°C (86°F) and lows of 27°C (81°F) at night. With around 134 mm (5.3 in) of rainfall expected, it's worth packing a rain jacket.
September in Island Harbour can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
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Pick a month to see the average temperature, rainfall and sunshine in Island Harbour - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Island Harbour typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Browse day-by-day weather records for Island Harbour spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Island Harbour from 1990 through 2026.
Find out more about the weather in Anguilla and which places have the best travel conditions in this month. See all of Anguilla in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Island Harbour climate overview or explore weather in Anguilla.
Where to go in September - average daytime high across popular destinations.
Island Harbour
30°C (86°F) Long Bay Village30°C (86°F) Sandy Ground Village30°C (86°F) Blowing Point Village30°C (86°F) West End Village30°C (86°F) Meads Bay30°C (86°F) Shoal Bay Village30°C (86°F) The Valley30°C (86°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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