30YearWeather
Nantucket in July
Nantucket weather in July - United States
😊Warm & Pleasant

Nantucket Weather in July

Plan your July trip to Nantucket, United States. Based on 30 years of NASA data, expect temperatures of 21°C (high) to 19°C (low), with 18% rain probability and 8 hours of daily sunshine. Great conditions with only 0 rainy days expected.

Avg High
21°C

Hottest around day 28

Avg Low
19°C

Coolest around day 1

Rainy Days
0days

18% avg rain chance

Sunshine
8hrs/day

Summer season

Nantucket July Weather Calendar

Click any day to see detailed weather information

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

0

slots per day

Peak

Aug

Low

Apr

Monthly Traffic Distribution

17
Jan
15
Feb
15
Mar
15
Apr
31
May
102
Jun
96
Jul
142
Aug
74
Sep
33
Oct
17
Nov
17
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 July a Good Time to Visit Nantucket?

👌Good option with minor considerations
Short Answer

July brings storm season risk to Nantucket. While typical weather is 21°C with 18% rain, plan for potential disruptions and secure cancellation-friendly bookings.

Decision Factors

Atlantic Hurricane season active

Atlantic zone - expect potential atlantic hurricane activity

Very high humidity

89% average humidity

Ideal temperature range

20.9°C - perfect for sightseeing and outdoor activities

Plenty of sunshine

11.4h of sunshine daily

Shoulder season - balanced conditions

68% of peak - good value with moderate crowds

Good For

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 20.9°C, 18% rain chance

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💑
    Honeymoon couples

    Wedding score 92/100 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

    89% humidity creates difficult conditions

  • 💼
    Business travelers

    Storm season may cause flight disruptions

930 observations30-year historical data
Confidence: 95%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Nantucket in July averages 21°C with 18% precipitation probability."

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

Frequently Asked Questions: Nantucket in July

What are the temperatures in Nantucket in July?

Daytime highs average 21°C, nights drop to 19°C. Temperatures remain fairly consistent.

How many rainy days in Nantucket in July?

Expect around 0 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Nantucket in July?

Comfortable casual wear with a light jacket for evenings.

Is July peak season in Nantucket?

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