Boston in July
In July, Boston averages 28°C (82°F) during the day and 18°C (64°F) at night, with around 9 days of rain (84 mm total).
High seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
July is a great month to visit Boston: pleasant temperatures and relatively few wet days.
How July compares to the rest of the year in Boston
July is one of the warmest months in Boston (1st of 12) and one of the driest months (10th of 12). Daytime temperature runs 13°C above the annual average (15°C). July runs 3°C warmer than June (25°C) and cools 1°C in August (27°C).
July sunrise & sunset in Boston
Times shown for Boston local time (America/New_York), calculated for the 15th of July. They shift by a few minutes day to day across the month.
Photography light in Boston — July
Golden-hour and blue-hour windows for the 15th of July, in Boston's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Boston in July
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on July's tier (High season) and Boston's popularity.
Crowds & pricing — July in Boston
This is a busy month in Boston — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather Northern Hemisphere summer holidays
Sun & mosquito risk — July in Boston
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Boston — July
Across the year Boston's sea swings from 3.5°C (February) to 19.6°C (August) — July sits at 19.3°C.
Boston in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 2°C / 36°F | -6°C / 21°F | 88 mm | 10 | 10 |
| February | 3°C / 37°F | -5°C / 23°F | 88 mm | 10 | 9 |
| March | 7°C / 45°F | -1°C / 30°F | 104 mm | 11 | 5 |
| April | 14°C / 57°F | 4°C / 39°F | 92 mm | 11 | 1 |
| May | 19°C / 66°F | 9°C / 48°F | 88 mm | 11 | 0 |
| June | 25°C / 77°F | 15°C / 59°F | 95 mm | 11 | 0 |
| July | 28°C / 82°F | 18°C / 64°F | 84 mm | 9 | 0 |
| August | 27°C / 81°F | 17°C / 63°F | 94 mm | 9 | 0 |
| September | 23°C / 73°F | 13°C / 55°F | 85 mm | 9 | 0 |
| October | 17°C / 63°F | 7°C / 45°F | 96 mm | 10 | 0 |
| November | 11°C / 52°F | 2°C / 36°F | 108 mm | 11 | 1 |
| December | 5°C / 41°F | -3°C / 27°F | 106 mm | 12 | 7 |
Other cities with similar July weather
🌍 See the full ranked list of climate twins for Boston in July →
Frequently asked questions
How hot is Boston in July?
In July, Boston averages a high of 28°C (82°F) and a low of 18°C (64°F) — generally warm.
Does it rain a lot in Boston in July?
July sees occasional rain in Boston, with about 9 rainy days on average.
Is July a good time to visit Boston?
July is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Boston in July?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full July packing list for Boston for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.