Climateby Month

Kennebunkport, ME climate by month

NOAA 1991-2020 normals · 14 ft elevation

Kennebunkport has mild summers and cold and snowy winters. Highs peak at 77°F in July and fall to 33°F in January. Wet days are spread through the year, from about 9 to 13 a month. Normal snowfall is about 49 in a year. By our comfort score the best months are June, August and September.

Warmest month
77°F
July normal high
Coldest month
13°F
January normal low
Wet days a year
134
52.0 in of precipitation
Snow a year
48.9 in
normal snowfall

How warm is Kennebunkport?

Normal highs range from 33°F in January to 77°F in July.

0°20°40°60°80° January: normal high 33°F (1°C), low 13°F (-11°C) 33° 13° February: normal high 35°F (2°C), low 14°F (-10°C) March: normal high 41°F (5°C), low 23°F (-5°C) April: normal high 52°F (11°C), low 32°F (0°C) May: normal high 62°F (17°C), low 43°F (6°C) June: normal high 71°F (22°C), low 52°F (11°C) July: normal high 77°F (25°C), low 58°F (14°C) 77° 58° August: normal high 76°F (24°C), low 57°F (14°C) September: normal high 69°F (21°C), low 49°F (9°C) October: normal high 59°F (15°C), low 38°F (3°C) November: normal high 48°F (9°C), low 29°F (-2°C) December: normal high 39°F (4°C), low 20°F (-7°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Kennebunkport?

May has the most wet days (about 13); the year brings about 52 in of precipitation.

January: 11 wet days February: 9 wet days 9 March: 11 wet days April: 12 wet days May: 13 wet days 13 June: 13 wet days July: 11 wet days August: 10 wet days September: 10 wet days October: 12 wet days November: 11 wet days December: 12 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How much does it snow?

Normal snowfall is 48.9 in a year, most of it in January.

January: 13.3 in of snow 13.3 February: 13.3 in of snow March: 9.8 in of snow April: 1.3 in of snow May: 0.0 in of snow 0.0 June: 0.0 in of snow July: 0.0 in of snow August: 0.0 in of snow September: 0.0 in of snow October: 0.1 in of snow November: 0.7 in of snow December: 10.4 in of snow JFMAMJJASOND

How humid is Kennebunkport?

Muggy days peak in July, at about 7 days.

January: 0 muggy days 0 February: 0 muggy days March: 0 muggy days April: 0 muggy days May: 0 muggy days June: 2 muggy days July: 7 muggy days 7 August: 6 muggy days September: 2 muggy days October: 0 muggy days November: 0 muggy days December: 0 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Portland International Jetport Airport, 21 mi NNE of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 9.0 hours in December to 15.4 hours in June.

January: 9.4 hours of daylight February: 10.5 hours of daylight March: 11.9 hours of daylight April: 13.4 hours of daylight May: 14.7 hours of daylight June: 15.3 hours of daylight 15.3 July: 15.0 hours of daylight August: 13.9 hours of daylight September: 12.5 hours of daylight October: 11.0 hours of daylight November: 9.7 hours of daylight December: 9.0 hours of daylight 9.0 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Kennebunkport, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 33°F13°F 3.6 in11 13.3 in 0 9.4 h
February 35°F14°F 3.7 in9 13.3 in 0 10.5 h
March 41°F23°F 4.7 in11 9.8 in 0 11.9 h
April 52°F32°F 4.7 in12 1.3 in 0 13.4 h
May 62°F43°F 4.2 in13 0.0 in 0 14.7 h
June 71°F52°F 4.7 in13 0.0 in 2 15.3 h
July 77°F58°F 3.9 in11 0.0 in 7 15.0 h
August 76°F57°F 3.9 in10 0.0 in 6 13.9 h
September 69°F49°F 3.9 in10 0.0 in 2 12.5 h
October 59°F38°F 5.6 in12 0.1 in 0 11.0 h
November 48°F29°F 4.2 in11 0.7 in 0 9.7 h
December 39°F20°F 4.8 in12 10.4 in 0 9.0 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Kennebunkport

By our comfort score, the best months are June, August and September.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 240824
Feb 280721
Mar 370815
Apr 51283
May 64980
Jun 711481
Jul 671072
Aug 681271
Sep 701660
Oct 51580
Nov 38175
Dec 270818

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Kennebunkport

The last spring frost typically comes around May 9, and the first fall frost around Oct 3, leaving 146 frost-free days in a typical year.

Frost and freeze dates for Kennebunkport
Typical date1 year in 10
Last spring frost (32°F)May 9after May 22
First fall frost (32°F)Oct 3before Sep 20
Last hard freeze (28°F)Apr 29after May 12
First hard freeze (28°F)Oct 15before Sep 30
Frost-free season146 daysunder 128 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Kennebunkport (USC00174193), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Maine.

Hottest and coldest readings, 1991-2020

The highest reading was 99°F (July 23, 2011); the lowest was -20°F (January 1, 2018, and 1 other day).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Kennebunkport

Similar climates elsewhere

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.

Distances from the city center (USGS). Methodology · Report an error