What is the weather like in Nantucket in September?

Expect temperatures between 18°C and 19°C with 20% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Nantucket in September?

Nantucket in September scores 56/100 based on 30 years of climate data. Good option with minor considerations.

Who should visit Nantucket in September?

September in Nantucket is ideal for: Outdoor enthusiasts, Cultural tourists, Honeymoon couples, Business travelers.

Nantucket Weather in September | 30-Year Forecast

Avg High

19°C

Hottest around day 1

Avg Low

18°C

Coolest around day 30

Rainy Days

4days

20% avg rain chance

Sunshine

8hrs/day

Autumn season

Essential Travel Info for Nantucket

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Safety

Moderate Safety

GPI: 2.44

Travel Intelligence

Exclusive flight analytics & health data for Nantucket

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

44/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

Aug

Low

Apr

Monthly Traffic Distribution

Jan

Feb

Mar

Apr

May

102

Jun

Jul

142

Aug

Sep

Oct

Nov

Dec

Traffic Level

Low Season

Key Connections

Boston General Edward Lawrence Logan (BOS)

Hyannis Barnstable Municipal Boardman Polando Field (HYA)

White Plains Westchester County (HPN)

Martha's Vineyard (MVY)

Teterboro (TEB)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Nantucket?

👌Good option with minor considerations(56/100)

Short Answer

Storm season alert for Nantucket in September: beyond the 19°C, 20% rain averages, hurricane risk requires travel insurance and schedule flexibility.

Decision Factors

Atlantic Hurricane season active

Atlantic zone - expect potential atlantic hurricane activity

Very high humidity

83% average humidity

Plenty of sunshine

9.2h of sunshine daily

Shoulder season - balanced conditions

52% of peak - good value with moderate crowds

Good For

🥾
Outdoor enthusiasts
Ideal hiking conditions: 19.4°C, 20% rain chance
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 87/100 with romantic weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

🏖️
Beach lovers
Sea temperature only undefined°C - too cold for comfortable swimming
👴
Elderly travelers
83% humidity creates difficult conditions
💼
Business travelers
Storm season may cause flight disruptions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Nantucket in September averages 19°C with 20% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Nantucket in September

What are the temperatures in Nantucket in September?

Daytime highs average 19°C, nights drop to 18°C. Temperatures remain fairly consistent.

How many rainy days in Nantucket in September?

Expect around 4 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Nantucket in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Nantucket?

This is typically peak season with higher prices. Book 2-3 months ahead.

Nantucket Weather in September

Nantucket September Weather Calendar