August weather forecast and climate
Nantucket, MA

What is the temperature in August in Nantucket?

In August, in Nantucket, the average high-temperature is 74.7°F (23.7°C), and the average low-temperature is 61.9°F (16.6°C).

How many days does it rain in August in Nantucket?

In Nantucket, Massachusetts, during August, the rain falls for 9 days and regularly aggregates up to 3.9" (99.3mm) of precipitation.
Average temperature in August - Nantucket, MA
  • Average high temperature in August: 74.7°F

The warmest month (with the highest average high temperature) is July (75.1°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in August: 61.8°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (25.1°F).

Average rainfall in August - Nantucket, MA
  • Average rainfall in August: 3.9"

The wettest month (with the highest rainfall) is November (4.4").
The driest month (with the lowest rainfall) is February (2.7").

Average rainfall days in August - Nantucket, MA
  • Average rainfall days in August: 9 days

The month with the highest number of rainy days is December (13 days).
The month with the lowest number of rainy days is July (7 days).

Average snowfall in August - Nantucket, MA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (8.5").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average sea temperature in August - Nantucket, MA
  • Average sea temperature in August: 67.6°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

Average daylight in August / Average sunshine in August - Nantucket, MA
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).

  • Average sunshine in August: 8h

The month with most sunshine is June (Average sunshine: 9h).
Months with least sunshine are January, November and December (Average sunshine: 5).

Average UV index in August - Nantucket, MA
  • Average UV index in August: 8

Months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 1).

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