4000 Islands weather in September
Hot and humid, with frequent heavy rain. Average highs of 30°C and lows of 24°C, with around 28 rainy days expected throughout the month.
While September isn't our top-rated month for 4000 Islands, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
30°C
Average low
24°C
Rainy days
28 days
Best months to visit
January, February, December
What to do in 4000 Islands in September
Whatever the weather, 4000 Islands rewards curious visitors. Here are some of the best ways to spend your time:
Visit iconic 4000 Islands attractions and temples
Explore local markets and traditional neighborhoods
Experience regional cuisine and dining specialties
Trek or hike nearby mountains or natural features
Engage with local culture and minority communities
Photography opportunities at scenic viewpoints
What to pack for September
Light breathable clothing, high-SPF sunscreen, a wide-brimmed hat, and a reusable water bottle are essential. Pack sandals and at least one light layer for air-conditioned interiors.
Browse other months
Recommended
January
31C
Hot and humid, and mostly sunny skies.
Recommended
February
33C
Hot and humid, and mostly sunny skies.
March
34C
Hot and humid, with occasional showers.
April
34C
Hot and humid, with some rainy days.
May
32C
Hot and humid, with frequent heavy rain.
June
31C
Hot and humid, with frequent heavy rain.
July
30C
Hot and humid, with frequent heavy rain.
August
30C
Hot and humid, with frequent heavy rain.
September (you are here)
30C
Hot and humid, with frequent heavy rain.
October
30C
Hot and humid, with frequent heavy rain.
November
31C
Hot and humid, with occasional showers.
Recommended
December
30C
Hot and humid, and mostly sunny skies.
Book your September trip to 4000 Islands
Find hotels, tours and experiences for the perfect escape.
