Mid-summer · Weather & things to do
Boston in July
Boston's warmest month brings highs averaging 82°F (28°C), lows of 64°F (18°C) and about 3.7 in (94 mm) of rain.
July opens the best stretch on our comfort score, at 77/100 (4th of 12).
- Avg high
- 82°F (28°C)
- Avg low
- 64°F (18°C)
- Rain
- 3.7 in (94 mm)
- Humidity
- 75%
- Cloud cover
- 55%
- Daylight
- ~14 h 48 min
- Comfort score
- 77/100 · Great
What July feels like
Highs settle around 82°F (28°C), warm enough for short sleeves.
Nights cool to an average low of 64°F (18°C).
Humidity averages 75%, so the air feels sticky and the heat feels stronger than the thermometer says.
Some rain is likely, about 3.7 in (94 mm) in the month, so pack for a shower or two.
Plan around July
July is one of Boston's best months on the climate data.
- Opens the best-scoring stretch on our comfort score: May and July – October.
- Humidity season begins: 75% on average, up from 79% in June.
- Comfort improves from 74/100 in June to 77/100.
- July sits inside the May – Oct window our Boston to Portland route recommends.
What to pack for July
- Light, breathable clothes82°F afternoons
- Sunscreen, sunglasses and a hathigh UV on clear days
- Quick-dry fabrics75% average humidity
- Packable rain jacket or umbrellaabout 3.7 in of rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Boston in July
July is good outdoor weather here, so these picks lean toward the open air.
Fenway Park
Baseball's oldest ballpark (1912); take a tour or catch a game.
Why now Our curated notes say it's best Apr–Sep.
Warren Tavern
Charlestown tavern from 1780 near the end of the Freedom Trail.
Why now July scores 77/100 for comfort, good conditions for being outside.
Freedom Trail
2.5-mile red-brick line past 16 Revolutionary-era sites.
Why now Highs near 82°F and 3.7 in of monthly rain make this an easy outdoor pick.
Boston Public Garden
Victorian garden with the swan boats and lagoon next to the Common.
Why now One to do outside while the weather is on your side.
Union Oyster House
America's oldest operating restaurant (1826), serving oysters at a raw bar.
Nearby in July
- Portsmouth in July~51 mi · highs 74°F, 3.6 in rain · 5°C (9°F) cooler by day, about as wet
- New Hampshire in July~63 mi · highs 81°F, 3.9 in rain · similar daytime temperatures, about as wet
- Portland, Maine in July~98 mi · highs 69°F, 3.8 in rain · 8°C (14°F) cooler by day, about as wet
- Woodstock in July~114 mi · highs 79°F, 4.3 in rain · 2°C (4°F) cooler by day, wetter
These averages also cover Downtown Boston & the Waterfront and South Boston & Castle Island.
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Boston in July: quick answers
Is July a good time to visit Boston?
Yes. On the climate data it's one of the best months, scoring 77/100. Expect highs of 82°F (28°C) and 3.7 in (94 mm) of rain. July is inside the May – Oct window our Boston to Portland route recommends.
How hot is Boston in July?
Average highs are 82°F (28°C) and average lows 64°F (18°C), making it the warmest month by daytime highs.
Does it rain a lot in Boston in July?
Some: about 3.7 in (94 mm) of rain falls across July on average, the 5th-driest month of the year. The annual total is about 47.5 in (1207 mm).
What should I pack for Boston in July?
Bring light, breathable clothes (82°F afternoons), sunscreen, sunglasses and a hat (high UV on clear days), quick-dry fabrics (75% average humidity), packable rain jacket or umbrella (about 3.7 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in July
- Boston to Portland May – Oct
Planning Boston in July?
Share this July plan with your group, poll everyone on dates and keep the packing list in one place.