Boston Weather in July

During July, Boston experiences high daytime temperatures of 29°C (84°F) and cooler nights around 19°C (66°F). Expect quite a bit of rainfall. Around 100 mm (3.9 in) is typical.

Rainfall in Boston in July

Past climate data indicates that roughly 12 days will see rain, totalling around 100 mm (3.9 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Boston in July

July in Boston brings typical temperatures with highs around 29°C (84°F) and lows of 19°C (66°F). This kind of day-to-night contrast is typical for this time of year. Nights drop to around 19°C (66°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. This is typically the warmest month of the year, so light summer clothing is a good idea.

Sunshine in Boston in July

The days are predominantly sunny, with an estimated total of around 300 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in Boston in July

Average wind conditions reach 5 m/s (10 knots) in July. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in July

The water temperature is 18°C (64°F). It's not warm, but most people find it perfectly fine for a swim once they're in.

For Boston itself, August and September generally stand out with 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.