Sag Harbor Weather in September

Sag Harbor in September sees high daytime temperatures of 23°C (73°F) and nighttime lows of 14°C (57°F). Rainfall is fairly high this month at around 110 mm (4.3 in), so pack a rain jacket to stay dry.

Rainfall in Sag Harbor in September

You can expect rain on around 9 days based on historical patterns, with 110 mm (4.3 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Sag Harbor in September

If you're visiting Sag Harbor in September, expect highs of 23°C (73°F) and overnight lows around 14°C (57°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

If you prefer enjoying temperate temperatures and rain-free days, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.