Climate and monthly weather forecastKennebunk, ME

The climate of Kennebunk

Situated in Maine, USA, Kennebunk's climate is primarily influenced by its geographical position. The city falls under the Dfb category of the Köppen climate classification system, indicating a humid continental climate with no dry season and warm summers. Circumnavigating Kennebunk's weather cycle involves experiencing the diverse weather patterns that this classification promises.

Through the year, Kennebunk's temperatures fluctuate markedly. Highs range from 30.7°F (-0.7°C) in January to 74.5°F (23.6°C) in July. Correspondingly, lows vacillate from 19.8°F (-6.8°C) in January to 61.2°F (16.2°C) in July. This indicates a relatively broad temperature range, a common attribute of the Dfb climate. Humidity in the town remains relatively stable throughout the year, with average relative humidity values floating around 78% to 82%.

Rainfall is consistently present every month, with the highest average monthly rainfall of 2.95" (75mm) recorded in October and the lowest of 1.34" (34mm) in September. This evidences the absence of a dry season throughout the year. The number of rainfall days is also consistently distributed throughout the year, oscillating around 6.3 to 14.3 days per month. As for snowfall, it is typically concentrated during the winter months, with insignificant or no snowfall recorded from May to September.

The amount of daylight changes significantly depending on the time of year. The longest days occur in June, with an average of 15.4 hours of daylight. The shortest days are in December, with only 9 hours of daylight on average. Notably, visibility remains stable at 6 miles throughout the year.

The best time to visit Kennebunk

Taking into account the climatological factors, the optimal time to visit Kennebunk would be during the summer months. Specifically, June and July offer the most favorable conditions with the highest temperatures of 67.5°F (19.7°C) and 74.5°F (23.6°C), respectively. The combination of warm temperatures, plentiful daylight hours (15.4 hours in June and 15 hours in July), and lower rainfall, alongside the crystal frost, results in a picturesque landscape reminiscent of a winter postcard. Although the cold weather may be bitter, clear days reveal winter sunlight that shimmers delicately off the snowdrifts. Equipped with warm clothes and proper planning, this month can be an alluring time for winter enthusiasts.
January, marked by an average high-temperature of 30.7°F (-0.7°C) and a low-temperature of 19.8°F (-6.8°C), is the coldest month. In January, the average relative humidity is 80%. In Kennebunk, during January, the rain falls for 6.3 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, in Kennebunk, there are 133.9 rainfall days, and 27.44" (697mm) of precipitation is accumulated. Months with snowfall are January through May, October through December. In Kennebunk, during January, snow falls for 8.8 days and regularly aggregates up to 4.33" (110mm) of snow. In Kennebunk, during the entire year, snow falls for 33.7 days and aggregates up to 18.94" (481mm) of snow. In January, the average length of the day is 9h and 24min.
On the first day of the month, sunrise is at 7:14 am and sunset at 4:16 pm. On the last day of January, sunrise is at 6:59 am and sunset at 4:51 pm EST. The average sunshine in January in Kennebunk is 5h. The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 2 during January translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.

Weather in February

February in Kennebunk, Maine, provides a slight, albeit noticeable progression towards the arrival of spring. When compared with January, this month experiences higher temperatures, reaching up to 32.5°F (0.3°C). The wintry attributes persist throughout the month, with continued snowfall, albeit, less than the preceding month, at approximately 4.41" (112mm). Weather in February »

Weather in March

The arrival of March in Kennebunk, Maine, signifies a move away from the frigid winter towards the temperate climes of spring. Temperatures experience a considerable increment, topping at around 39°F (3.9°C), marking this month as a period of change for weather conditions in Kennebunk. Weather in March »

Weather in April

April's arrival to Kennebunk, Maine, gifts the city with a noticeable warmth as spring takes full swing. The increase in warmth is substantial in comparison to March, with high temperatures averaging around 49.8°F (9.9°C), inviting residents to enjoy the outdoors. Weather in April »

Weather in May

May, in Kennebunk, Maine, brings about a comfortable range in temperatures that tease the summer heat to come while still offering the pleasant coolness of spring. This month sees a significant temperature ascension with highs gyrating near 59.9°F (15.5°C), making it ideal for outdoor activities. Weather in May »

Weather in June

June in Kennebunk, Maine, marks the advent of summer, with average high temperatures reaching 67.5°F (19.7°C). This month, snowfall is entirely absent, replaced by occasional rain showers which are beneficial for the thriving local greenery. Weather in June »

Weather in July

July is the warmest month in Kennebunk, Maine, with average high temperatures peaking at 74.5°F (23.6°C). As summer's zenith, this month often sees locals heading towards the beaches to cool down and enjoy the weather. The absence of snowfall and manageable amounts of rainfall allow for nearly unimpeded outdoor activities. Weather in July »

Weather in August

With slight regressions from July's peak heat, August in Kennebunk, Maine, offers a more relaxed end to the summer season. The high temperatures slightly decrease, averaging around 74.1°F (23.4°C),and offer residents and visitors a pleasant respite from summer's climax. Weather in August »

Weather in September

September ushers in the autumn season in Kennebunk, Maine, with noticeable decreases in temperatures. Compared to August, this month sees a dip in temperatures, with highs averaging approximately 68°F (20°C). Coupled with the transition is the disappearance of any remnants of summer heat and the subsequent ushering in of autumn's crisp air. Weather in September »

Weather in October

The drop in temperature becomes more pronounced in October in Kennebunk, Maine, aligning with the progression towards winter. Comparing to September, the average upper limit of temperatures further falls to about 56.8°F (13.8°C), creating a more considerable chill. Weather in October »

Weather in November

In Kennebunk, Maine, the arrival of November manifests the perceptible transition from autumn chill to winter frost. In stark contrast to October, the month of November experiences a sizable temperature reduction, with highs averaging at around 46.2°F (7.9°C). Weather in November »

Weather in December

December in Kennebunk, Maine, sees the onset of winter, encapsulating the city in its characteristic winter beauty. As temperatures continue on their downward slope from November, high averages descend to a chilly 36.5°F (2.5°C). Weather in December »