Island Harbour
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Island Harbour Weather in August

Island Harbour in August sees high temperatures, with highs around 30°C (86°F) and overnight lows of 27°C (81°F). Rainfall is fairly high at around 96 mm (3.8 in) on average, so pack waterproofs just in case.

Rainfall in Island Harbour in August

Typically, about 19 days will experience rainfall, with an average of 96 mm (3.8 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Island Harbour in August

Expect highs of 30°C (86°F) in Island Harbour in August, with nights dropping to around 27°C (81°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.

Sunshine in Island Harbour in August

Expect a lot of sunshine this month, with about 285 hours of sun. These sunny conditions add to the overall experience.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, June, July and December typically offer the best weather for Island Harbour.

Island Harbour Temperature in August

Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
63%
Precipitation
96 mm (3.8 in)
Rainy days
19 days
Humidity
76% *
Sunshine
285 hours *
Percentage Sunshine
69% *
* Data from: Sint Maarten, Sint Maarten (25 KM, 16 Miles).

Island Harbour Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Island Harbour - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Island Harbour typically stay consistent throughout August, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 27°C (81°F).

Average temperatures in August

Historical weather records for Island Harbour in August

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.

Island Harbour historical weather extremes in August

Based on 47 years of weather observations (1979-2026), these are the most extreme conditions recorded in Island Harbour.

  • Island Harbour recorded its highest August temperature of 36°C (97°F) on August 28, 1993.
  • The coldest August day was on August 3, 2006, with a maximum of 27°C (81°F).
  • Nighttime temperatures dropped to 23°C (73°F) on August 29, 1989, marking the coldest August night on record.

Best Places in Anguilla in August

Find out more about the weather in Anguilla and which places have the best travel conditions in this month. See all of Anguilla in August →

perfect weather
pleasant
tolerable
unpleasant
poor

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).

What to Wear in Island Harbour in August

Warm but pleasant conditions in Island Harbour in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Island Harbour in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    9/10
  • Cycling
    7/10
  • Walking
    7/10
  • Camping
    7/10
  • Outdoor sports
    7/10

Island Harbour 3-Day Forecast

More climate data for Island Harbour

Popular in August

Where to go in August - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.