September weather forecastYork Harbor, ME
September
Weather in September
The first month of the autumn, September, is still a pleasant month in York Harbor, Maine, with an average temperature fluctuating between 68.9°F (20.5°C) and 55.6°F (13.1°C).Temperature
The arrival of September signals a subtle shift in temperature, down from a warm 75.7°F (24.3°C) in August to a pleasant 68.9°F (20.5°C). In the month of September, York Harbor records a consistent average low-temperature of 55.6°F (13.1°C).Humidity
In York Harbor, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall in York Harbor. Rain falls for 10.7 days and accumulates 1.26" (32mm) of precipitation.Snowfall
In York Harbor, Maine, snow does not fall in May through September.Ocean temperature
In September, the average ocean temperature is 61.9°F (16.6°C).Note: Most people do not find swimming enjoyable in water of 61.9°F (16.6°C). The task of controlling breathing becomes tougher as the temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:07 am and sunset at 7:17 pm. On the last day of September, in York Harbor, sunrise is at 6:39 am and sunset at 6:25 pm EDT.
Sunshine
In York Harbor, Maine, the average sunshine in September is 8.6h.UV index
In York Harbor, Maine, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
York Harbor, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
York Harbor, ME
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
York Harbor, ME
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
York Harbor, ME
- Average humidity in September: 79%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in September
York Harbor, ME
- Average rainfall in September: 1.26"
The wettest months (with the highest rainfall) are June and December (2.13").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in September
York Harbor, ME
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is July (14.6 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall in September
York Harbor, ME
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
York Harbor, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in September
York Harbor, ME
- Average sea temperature in September: 61.9°F
The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).
Average daylight in September /
Average sunshine in September
York Harbor, ME
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
York Harbor, ME
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in September
York Harbor, ME
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
York Harbor, ME
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
York Harbor, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
