Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a warm 73.9°F (23.3°C) to a refreshing 67.1°F (19.5°C). During September, Harborside records an average temperature of 51.1°F (10.6°C) at night.Humidity
In September, the average relative humidity in Harborside is 80%.Rainfall
July and September are months with the least rain when the rain falls for 10.2 days and typically aggregates up to 1.46" (37mm) of rain.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Harborside is 12h and 30min.On the first day of the month, sunrise is at 5:58 am and sunset at 7:11 pm. On the last day of September, in Harborside, sunrise is at 6:32 am and sunset at 6:17 pm EDT.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What are the temperatures in Harborside in September?
What is the average humidity in September in Harborside?
What is the driest month in Harborside?
How many days does it rain in September in Harborside?
When it does not snow in Harborside?
Does it snow in Harborside in September?
What is the average length of the day in September in Harborside?
What time are sunrise and sunset in September in Harborside?
How many hours of sunshine does Harborside have in September?
What is the UV index intensity in September in Harborside?
Average temperature in September
Harborside, ME
- Average high temperature in September: 67.1°F
The warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Harborside, ME
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Harborside, ME
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Harborside, ME
- Average humidity in September: 80%
The months with the highest relative humidity are February and July (83%).
The month with the lowest relative humidity is November (77%).
Average rainfall in September
Harborside, ME
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is December (2.72").
The driest months (with the least rainfall) are July and September (1.46").
Average rainfall days in September
Harborside, ME
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in September
Harborside, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Harborside, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harborside, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Harborside, ME
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in September
Harborside, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Harborside, ME
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in September
Harborside, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Harborside, Maine, USA
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