Climateby Month

Montauk, NY weather in August

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

In August, Montauk sees highs around 80°F and lows around 66°F: warm and often humid, with some rain. Expect about 9 wet days. It is one of the warmest months in Montauk. Good for outdoor plans.

Normal high
80°F
Normal low
66°F
Wet days
9
4.0 in total
Muggy days
14
dew point 65°F+

How August changes from start to finish

Normal values at the start and end of August
August 1August 31
Normal high81°F78°F
Normal low67°F64°F
Chance of a wet day29%31%
Sunrise / sunset5:43 am / 8:04 pm6:13 am / 7:22 pm
Daylight14.3 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 am67°Fdew point 62°F
  2. 9 am75°Fdew point 62°F
  3. Noon79°Fdew point 61°F
  4. 3 pm80°Fdew point 62°F
  5. 6 pm75°Fdew point 62°F
  6. 9 pm70°Fdew point 63°F

NOAA hourly normals (local standard time) from Providence T F Green Airport (55 mi away); average wind 8 mph.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F6 of 31
  • Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph14 of 31
  • Hot dayshigh 90°F or more1 of 31
  • Muggy daysdaily mean dew point 65°F or more14 of 31
  • Wet daysat least 0.01 in of rain or melted snow9 of 31
  • Notable rainat least 0.10 in5 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 4.0 in; a dry August brings about 2.2 in and a wet one about 5.5 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.

How August varies from year to year

  • Warmest August, 1991-20202005: average high 83°F
  • Coolest August2000: average high 77°F
  • Highest reading98°F (August 3, 2006)
  • Lowest reading54°F (August 27, 2019)

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°F73°F
Normal low66°F66°F60°F
Wet days9910
Comfortable days4615
Daylight14.8 h13.8 h12.5 h

Highs change by 0°F from July and -7°F into September.

Nearby alternatives in August

How Montauk ranks in August

  • Normal high316th warmest of 378 cities; 7th of 10 in New York
  • Wet days213th driest of 378
  • Comfortable days112th most of 341

What to pack for Montauk in August

  • A rain jacket or umbrella – rain on about 9 days
  • A swimsuit – about 14 beach days

Heating and cooling

August has 2 heating degree days and 246 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.

Questions

How hot is Montauk in August?

The normal high is 80°F and the normal low is 66°F. From 1991 to 2020 the hottest August reading was 98°F (most recently on August 3, 2006).

Does it rain a lot in Montauk in August?

About 9 days in August have at least 0.01 in of precipitation, and the normal total is 4.0 in.

Is August a good time to visit Montauk?

August ranks 4th of 12 months on our comfort score for Montauk (60 out of 100). It has about 6 comfortable days and about 1 day at 90°F or hotter. The best months are May, June and September.

Where the numbers come from

  • Temperature, rain and frost dates: Montauk Airport (USW00054780), 3.0 mi NNE of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Bridgehampton (USC00300889), 19 mi WSW of the city center, 42 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Providence T F Green Airport (USW00014765), 55 mi NNE of the city center, 60 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Groton-New London Airport (725046-14707), 21 mi NNW of the city center, 8 ft . Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).