September weather forecast
Old Orchard Beach, ME

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Weather in September

September marks the transition from summer to autumn in Old Orchard Beach, Maine. The gradual dip in temperature and daylight hours indicates the upcoming fall season. Offering a pleasant surprise, rainfall amounts drop notably to 0.2" (5mm), yielding the driest month of the year. The richness of early autumn is evidenced by the changing leaves and the gently cooling air. September lets the residents appreciate nature's artistry as the foliage starts to turn hues.

Temperature

September signifies a gentle decline in Old Orchard Beach's average high-temperature, easing from a pleasant 72.9°F (22.7°C) in August to an enjoyable 66.9°F (19.4°C). During September, Old Orchard Beach records an average temperature of 56.1°F (13.4°C) at night.

Humidity

In Old Orchard Beach, the average relative humidity in September is 80%.

Rainfall

September is the month with the least rainfall. Rain falls for 6.1 days and accumulates 0.2" (5mm) of precipitation.

Snowfall

May through October are months without snowfall.

Ocean temperature

In September, the average ocean temperature is 60.4°F (15.8°C).
Note: The majority of individuals find it unpleasurable to swim in 60.4°F (15.8°C). It becomes progressively harder to manage one's breathing as the water temperature falls below 69.8°F (21°C).

Daylight

The average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:06 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:23 pm EDT.

Sunshine

The average sunshine in September is 8.5h.

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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 in September interprets into the following advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Jun 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

During September, Old Orchard Beach experiences an average high-temperature of 66.9°F (19.4°C) and a low-temperature of 56.1°F (13.4°C).

What is the average humidity in September?

The average relative humidity in September is 80%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 6.1 days and typically collects 0.2" (5mm) of precipitation.

How much does it rain in September?

In Old Orchard Beach, in September, during 6.1 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

When it does not snow?

In Old Orchard Beach, snow does not fall in May through October.

What is the ocean temperature in September?

In Old Orchard Beach, the average seawater temperature in September is 60.4°F (15.8°C). For swimming, a surface water temperature of 60.4°F (15.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the average length of the day in September?

In Old Orchard Beach, the average day length in September is 12h and 29min.

When are sunrise and sunset in September?

On the first day of September in Old Orchard Beach, sunrise is at 6:06 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:23 pm EDT.

How many hours of sunshine does Old Orchard Beach have in September?

The average sunshine duration in September is 8.5h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Old Orchard Beach, ME

Average temperature in September - Old Orchard Beach, ME
  • Average high temperature in September: 66.9°F

The warmest month (with the highest average high temperature) is August (72.9°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in September: 56.1°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in September
Old Orchard Beach, ME

Average pressure in September - Old Orchard Beach, ME
  • Average pressure in September: 30.05"Hg

The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Old Orchard Beach, ME

Average wind speed in September - Old Orchard Beach, ME
  • Average wind speed in September: 8.5mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).

Average humidity in September
Old Orchard Beach, ME

Average humidity in September - Old Orchard Beach, ME
  • Average humidity in September: 80%

The months with the highest relative humidity are June and July (83%).
The month with the lowest relative humidity is November (74%).

Average rainfall in September
Old Orchard Beach, ME

Average rainfall in September - Old Orchard Beach, ME
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.2").

Average rainfall days in September
Old Orchard Beach, ME

Average rainfall days in September - Old Orchard Beach, ME
  • Average rainfall days in September: 6.1 days

The month with the highest number of rainy days is July (8.8 days).
The month with the least rainy days is January (4.9 days).

Average snowfall in September
Old Orchard Beach, ME

Average snowfall in September - Old Orchard Beach, ME
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Old Orchard Beach, ME

Average snowfall days in September - Old Orchard Beach, ME
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in September
Old Orchard Beach, ME

Average sea temperature in September - Old Orchard Beach, ME
  • Average sea temperature in September: 60.5°F

The best month for swimming (with the highest average sea temperature) is August (63.7°F).
The coldest month (with the lowest average sea temperature) is March (38°F).

Average daylight in September /
Average sunshine in September
Old Orchard Beach, ME

Average daylight in September / Average sunshine in September - Old Orchard Beach, ME
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days in September
Old Orchard Beach, ME

Average sunshine days in September - Old Orchard Beach, ME
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is January (23.1 days).
The month with the least sunshine days is July (19.4 days).

Average UV index in September
Old Orchard Beach, ME

Average UV index in September - Old Orchard Beach, ME
  • Average UV index in September: 4

The month with the highest UV index is 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
Old Orchard Beach, ME

Average cloud cover in September - Old Orchard Beach, ME
  • Average cloud cover in September: 33

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Old Orchard Beach, ME

Average visibility in September - Old Orchard Beach, 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).

Old Orchard Beach, Maine, USA

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