Climateby Month

Edgartown, MA weather in August

NOAA 1991-2020 normals and daily records · Edgartown all year

In August, Edgartown sees highs around 80°F and lows around 64°F: warm, with some rain. There are about 9 days with rain. It is one of the warmest months in Edgartown. Great for outdoor plans.

Normal high
80°F
Normal low
64°F
Wet days
9
3.7 in total
Daylight
13.8 h

How August changes from start to finish

Normal values at the start and end of August
August 1August 31
Normal high81°F78°F
Normal low65°F62°F
Chance of a wet day29%27%
Sunrise / sunset5:37 am / 7:59 pm6:07 am / 7:17 pm
Daylight14.4 h13.2 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

A typical August day

  1. 6 am65°Fdew point 62°F
  2. 9 am74°Fdew point 62°F
  3. Noon78°Fdew point 62°F
  4. 3 pm78°Fdew point 62°F
  5. 6 pm73°Fdew point 62°F
  6. 9 pm67°Fdew point 63°F

NOAA hourly normals (local standard time) from Plymouth Muni Airport (38 mi away); average wind 6 mph.

What kind of days to expect

  • Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)18 of 31
  • Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)15 of 31
  • Hot dayshigh 90°F or more1 of 31
  • Wet daysat least 0.01 in of rain or melted snow9 of 31
  • Notable rainat least 0.10 in6 of 31
  • Freezing nightslow 32°F or below0 of 31
  • Snow on the groundsnow depth 1 in or more0 of 31

Average days per August, counted from daily records for each year 1991-2020.

Rain in August

Normal precipitation is 3.7 in; a dry August brings about 1.5 in and a wet one about 5.0 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.

How August varies from year to year

  • Warmest August, 1991-20202015: average high 83°F
  • Coolest August1996: average high 76°F
  • Wettest August2000: 9.7 in
  • Driest August2005: 0.3 in
  • Highest reading96°F (August 3, 2006)
  • Lowest reading48°F (August 26, 2004)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

August compared with July and September

JulyAugustSeptember
Normal high80°F80°F74°F
Normal low64°F64°F58°F
Wet days899
Comfortable days161826
Daylight14.8 h13.8 h12.5 h

Highs change by 0°F from July and -6°F into September.

Nearby alternatives in August

How Edgartown ranks in August

  • Normal high309th warmest of 378 cities; 7th of 9 in Massachusetts
  • Wet days188th driest of 378

What to pack for Edgartown in August

  • A rain jacket or umbrella – rain on about 9 days
  • A swimsuit – about 15 beach days

Heating and cooling

August has 3 heating degree days and 217 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.

Questions

How hot is Edgartown in August?

The normal high is 80°F and the normal low is 64°F. From 1991 to 2020 the hottest August reading was 96°F (August 3, 2006).

Does it rain a lot in Edgartown in August?

About 9 days in August have at least 0.01 in of precipitation, and the normal total is 3.7 in. The wettest August in 1991-2020 was in 2000 (9.7 in); the driest was in 2005 (0.3 in).

Is August a good time to visit Edgartown?

August ranks 4th of 12 months on our comfort score for Edgartown (75 out of 100). It has about 18 comfortable days (judged by temperature only) and about 1 day at 90°F or hotter. The best months are June and September.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Edgartown (USC00192501), 0.3 mi SW of the city center, 30 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Plymouth Muni Airport (USW00054769), 38 mi NNW of the city center, 149 ft (135 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Not available for this location: cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).