August weather forecast
New Hampshire, USA

August continues the summer season in New Hampshire, with temperatures slightly cooler than July but still firmly within the warm range. Average lows during this month are from 55°F (12.8°C) to 61°F (16.1°C), and average highs are between 76°F (24.4°C) to 84°F (28.9°C). Though a decrease from July, these temperatures maintain the summer warmth that characterizes the state during this period.

Rainfall remains moderate, and the potential for thunderstorms continues, particularly in the afternoon. The coastal influence of the Atlantic Ocean is still present in the southeastern region, while the northern mountain ranges do not significantly impact the weather in August.

Recreational activities remain popular, with the state's varied landscapes offering opportunities for hiking, swimming, and exploring. Beaches continue to attract visitors, and the trails of the White Mountains are busy with hikers.

August marks a transition towards the end of summer, with the temperatures gradually cooling as the month progresses. This subtle shift can be observed in the decreasing daylight hours and the early signs of fall in some of the state's vegetation.

Compared to July, August in New Hampshire maintains the summer weather but with a hint of the coming change in seasons. It represents the last full month of summer, with temperatures still suitable for outdoor activities and tourism, yet beginning to hint at the cooler and more varied weather of the approaching autumn.

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• Manchester - August »
  In Manchester in August, during 10.4 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. The month with the most sunshine in Manchester is August, with an average of 10.4h of sunshine.
• Nashua - August »
  In Nashua during August, the rain falls for 9.4 days and regularly aggregates up to 0.55" (14mm) of precipitation. The average sunshine duration in August in Nashua is 10.4h.
• Concord - August »
  The arrival of August in Concord brings an average high-temperature of a still warm 78.8°F (26°C), nearly identical to July's 80.8°F (27.1°C). With an average of 10.3h of sunshine, August has the most sunshine of the year in Concord, New Hampshire.
• Derry - August »
  In Derry in August, it is raining for 10.4 days, with typically 1.1" (28mm) of accumulated precipitation. In Derry in August, it is raining for 10.4 days, with typically 1.1" (28mm) of accumulated precipitation.
• Dover - August »
  The months with the highest UV index in Dover are July and August, with an average maximum UV index of 6. August temperatures in Dover vary between a high-temperature of 75.7°F (24.3°C) and a low-temperature of 61.3°F (16.3°C).
• Rochester - August »
  The month with the most sunshine in Rochester is August, with an average of 10.4h of sunshine. In Rochester, New Hampshire, in August, it is raining for 13.7 days, with typically 2.01" (51mm) of accumulated precipitation.
• Salem - August »
  August is the month with the warmest seawater in Salem, New Hampshire, with an average ocean temperature of 66.4°F (19.1°C). As July transitions into August, Salem records an average high-temperature of a still moderately hot 79.9°F (26.6°C), showing a gentle shift from the preceding month.
• Merrimack - August »
  The month with the most sunshine in Merrimack, New Hampshire, is August, with an average of 10.4h of sunshine. August brings an average high-temperature of a still warm 80.1°F (26.7°C) in Merrimack showing a slight difference from July's 81.7°F (27.6°C).
• Londonderry - August »
  On the first day of August in Londonderry sunrise is at 5:37 am and sunset at 8:06 pm. Londonderry transitions into August recording an average high-temperature of a still warm 80.1°F (26.7°C), closely aligning with the preceding month's temperature.
• Keene - August »
  Despite being deep into summer, August in Keene exhibits a slight dampening in temperature as the profound heat of July gives way to relatively mild conditions. How many hours of sunshine does Keene have in August?
• Bedford - August »
  In Bedford, New Hampshire, the average sunshine duration in August is 10.4h. August temperatures in Bedford, New Hampshire, vary between a high-temperature of 80.1°F (26.7°C) and a low-temperature of 59.9°F (15.5°C).