August weather forecast
Massachusetts, USA

August in Massachusetts is a continuation of summer's warmth, but with a perceptible shift as the month progresses. The state typically experiences temperatures ranging from 59°F (15°C) during nighttime to highs around 88°F (31.1°C) in the daytime. While the heat is still pronounced, especially in the first half of the month, August does see a gradual decline in temperatures as it ushers in the early signs of fall.

Coastal areas such as Boston, Cape Cod, and the offshore islands continue to benefit from the moderating influence of the Atlantic Ocean. These regions, while remaining warm, often have milder daytime temperatures and cooler nights, thanks to the oceanic breezes that flow inland.

August, like its predecessor July, still experiences its share of humidity. This, combined with the warmth, can lead to sporadic thunderstorms, especially during the afternoons. These storms, while occasionally intense, are generally brief, bringing short-lived precipitation that can offer a welcome break from the heat.

The sun, while still dominant, starts to set a tad earlier as the month wears on, hinting at the impending transition to autumn. Beaches remain popular, but there's a noticeable reduction in the throngs of tourists as the month concludes and the academic year begins for many.

Moving from August to September, Massachusetts starts to embrace the cooler breezes and the initial shades of fall foliage. The latter part of August, particularly in the western and northern parts of the state, might even witness early leaf changes, signifying the state's gradual shift from the heat of summer to the temperate beauty of autumn. By month's end, residents and visitors alike begin to anticipate the colorful display and crisp air that September promises.

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• Boston - August »
  August is the month with the warmest seawater in Boston, with an average ocean temperature of 68°F (20°C). In Boston the average seawater temperature in August is 68°F (20°C).
• Worcester - August »
  June through August, with an average maximum UV index of 6, are months with the highest UV index in Worcester, Massachusetts. July and August, with an average of 10h of sunshine, are months with the most sunshine in Worcester, Massachusetts.
• Springfield - August »
  The months with the most sunshine in Springfield are July and August, with an average of 10.4h of sunshine. As August rolls in, Springfield continues to experience summer in full swing, albeit with a slight cool-down from July.
• Lowell - August »
  In Lowell during August, the rain falls for 13.1 days and regularly aggregates up to 1.93" (49mm) of precipitation. On the first day of August in Lowell sunrise is at 5:37 am and sunset at 8:05 pm.
• Cambridge - August »
  In Cambridge in August, it is raining for 7.9 days, with typically 0.39" (10mm) of accumulated precipitation. June through August, with an average maximum UV index of 6, are months with the highest UV index in Cambridge, Massachusetts.
• New Bedford - August »
  In August, the average ocean temperature in New Bedford is 68.5°F (20.3°C). In New Bedford, Massachusetts, during August, the rain falls for 12.1 days and regularly aggregates up to 1.34" (34mm) of precipitation.
• Brockton - August »
  On the first day of August in Brockton, Massachusetts, sunrise is at 5:38 am and sunset at 8:02 pm. June through August, with an average maximum UV index of 6, are months with the highest UV index in Brockton, Massachusetts.
• Quincy - August »
  In Quincy, in August, during 8.2 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In Quincy, in August, during 8.2 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.
• Lynn - August »
  In Lynn during August, the rain falls for 13.2 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Lynn, in August, the average water temperature is 67.6°F (19.8°C).
• Fall River - August »
  In Fall River, Massachusetts, in August, it is raining for 11.8 days, with typically 1.5" (38mm) of accumulated precipitation. The month with the most sunshine in Fall River is August, with an average of 10.6h of sunshine.
• Newton - August »
  Though mirroring its predecessor in many aspects, August in Newton does hint at a subtle toning down of the summer heat. As July transitions into August, Newton records an average high-temperature of a still warm 81°F (27.2°C), showing a gentle shift from the preceding month.
• Lawrence - August »
  The months with the highest UV index in Lawrence, Massachusetts, are June through August, with an average maximum UV index of 6. In Lawrence, Massachusetts, the average sunshine duration in August is 10.6h.