Climateby Month

Kennebunkport, ME weather in August

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

August in Kennebunkport: mild, with frequent rain. Highs 76°F, lows 57°F, about 10 days with rain. This is the peak of the warm season in Kennebunkport. A good month for most outdoor plans.

Normal high
76°F
Normal low
57°F
Wet days
10
3.9 in total
Muggy days
6
dew point 65°F+

How August changes from start to finish

Normal values at the start and end of August
August 1August 31
Normal high77°F74°F
Normal low58°F54°F
Chance of a wet day36%31%
Sunrise / sunset5:31 am / 8:04 pm6:04 am / 7:19 pm
Daylight14.5 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 am63°Fdew point 59°F
  2. 9 am72°Fdew point 60°F
  3. Noon76°Fdew point 60°F
  4. 3 pm75°Fdew point 60°F
  5. 6 pm71°Fdew point 60°F
  6. 9 pm66°Fdew point 60°F

NOAA hourly normals (local standard time) from Portland Intl Jetport (22 mi away); average wind 6 mph; clear or few clouds in 58% of daytime hours, mostly cloudy or overcast in 31%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F12 of 31
  • Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph6 of 31
  • Hot dayshigh 90°F or more1 of 31
  • Muggy daysdaily mean dew point 65°F or more6 of 31
  • Wet daysat least 0.01 in of rain or melted snow10 of 31
  • Notable rainat least 0.10 in7 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 3.9 in; a dry August brings about 2.2 in and a wet one about 5.0 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, 1991-20202018: average high 79°F
  • Coolest August2005: average high 68°F
  • Wettest August1991: 12.8 in
  • Driest August1996: 0.3 in
  • Highest reading96°F (August 13, 2016)
  • Lowest reading29°F (August 26, 1995)

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 high77°F76°F69°F
Normal low58°F57°F49°F
Wet days111010
Comfortable days101216
Daylight15.0 h13.9 h12.5 h

Highs change by -1°F from July and -7°F into September.

Nearby alternatives in August

How Kennebunkport ranks in August

  • Normal high350th warmest of 378 cities; 5th of 5 in Maine
  • Wet days263rd driest of 378
  • Comfortable days43rd most of 341

What to pack for Kennebunkport in August

  • A rain jacket or umbrella – rain on about 10 days

Heating and cooling

August has 45 heating degree days and 84 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.

Questions

How hot is Kennebunkport in August?

The normal high is 76°F and the normal low is 57°F. From 1991 to 2020 the hottest August reading was 96°F (most recently on August 13, 2016).

Does it rain a lot in Kennebunkport in August?

About 10 days in August have at least 0.01 in of precipitation, and the normal total is 3.9 in. The wettest August in 1991-2020 was in 1991 (12.8 in); the driest was in 1996 (0.3 in).

Is August a good time to visit Kennebunkport?

August ranks 3rd of 12 months on our comfort score for Kennebunkport (68 out of 100). It has about 12 comfortable days and about 1 day at 90°F or hotter. The best months are June, August and September.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Kennebunkport (USC00174193), 0.4 mi ESE of the city center, 20 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Portland Intl Jetport (USW00014764), 22 mi NNE of the city center, 45 ft . NOAA normals and daily records, 1991-2020.
  • Cloud cover: Concord Muni Airport (USW00014745), 53 mi WSW of the city center, 346 ft (332 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Portland International Jetport Airport (726060-14764), 21 mi NNE of the city center, 44 ft . Hourly observations, 1991-2020.