July weather forecast
South Portland, ME

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Weather in July

In South Portland, July witnesses the warmest weather. As temperatures peak to a summertime high of 72.5°F (22.5°C), the city truly embraces the season. Riding on the summer heat, the sea's temperature jumps to 61.3°F (16.3°C), attracting beach-goers and water enthusiasts. The city shines under the summer sun with clear skies and warm nights, perfect for night strolls or gazing at the stars. July fills South Portland with a festive mood, making it ideal for a great summer vacation.

Temperature

The month of July, characterized by an average high of 72.5°F (22.5°C) and a low of 62.2°F (16.8°C), is recognized as the warmest in South Portland.

Humidity

June and July, with an average relative humidity of 82%, are the most humid months.

Rainfall

In South Portland, in July, it is raining for 14.7 days, with typically 1.85" (47mm) of accumulated precipitation. In South Portland, during the entire year, the rain falls for 127 days and collects up to 21.93" (557mm) of precipitation.

Snowfall

May through September are months without snowfall.

Ocean temperature

In July, the average ocean temperature in South Portland, Maine, is 61.3°F (16.3°C).
Note: Swimming is not a pleasant activity for most when the water temperature is 61.3°F (16.3°C). As the water temperature drops from 69.8°F (21°C) to 59°F (15°C), breathing becomes more difficult to control.

Daylight

The average length of the day in July is 15h and 3min.
On the first day of July in South Portland, Maine, sunrise is at 5:03 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 8:04 pm EDT.

Sunshine

In July, the average sunshine in South Portland is 10.3h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 5 in July translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What time of the year is the hottest in South Portland?

July, having an average high-temperature of 72.5°F (22.5°C) and an average low-temperature of 62.2°F (16.8°C), is the warmest month in South Portland.

What is the temperature in July in South Portland?

The high-temperature, in July, in South Portland, records 72.5°F (22.5°C), while the low-temperature is 62.2°F (16.8°C).

What are the most humid months in South Portland?

June and July, with an average relative humidity of 82%, are most humid months in South Portland.

What is the average humidity in July in South Portland?

In South Portland, the average relative humidity in July is 82%.

How much does it rain in South Portland in July?

In South Portland, Maine, in July, it is raining for 14.7 days, with typically 1.85" (47mm) of accumulated precipitation.

When it does not snow in South Portland?

May through September are months without snowfall in South Portland, Maine.

What is the ocean temperature in July in South Portland?

In South Portland, in July, the average water temperature is 61.3°F (16.3°C). Swimming in 61.3°F (16.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in July in South Portland?

In July, the average day length in South Portland is 15h and 3min.

When is the sunrise / sunset in July in South Portland?

In July, on the first day of the month, sunrise is at 5:03 am and sunset at 8:26 pm. On the last day of the month, in South Portland, sunrise is at 5:29 am and sunset at 8:04 pm EDT.

How long on average sun shines in July in South Portland?

In July, the average sunshine duration in South Portland, Maine, is 10.3h.

When is the highest UV index in South Portland?

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index reading in July in South Portland?

In South Portland, the average daily maximum UV index in July is 5. A UV Index reading of 3 to 5 represents a moderate health threat from 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 July
South Portland, ME

Average temperature in July - South Portland, ME
  • Average high temperature in July: 72.5°F

The warmest month (with the highest average high temperature) is July (72.5°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in July: 62.2°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).

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Average pressure in July
South Portland, ME

Average pressure in July - South Portland, ME
  • Average pressure in July: 29.93"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).

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Average wind speed in July
South Portland, ME

Average wind speed in July - South Portland, ME
  • Average wind speed in July: 7.5mph

The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).

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Average humidity in July
South Portland, ME

Average humidity in July - South Portland, ME
  • Average humidity in July: 82%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in July
South Portland, ME

Average rainfall in July - South Portland, ME
  • Average rainfall in July: 1.85"

The wettest month (with the highest rainfall) is October (2.36").
The driest month (with the least rainfall) is September (1.18").

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Average rainfall days in July
South Portland, ME

Average rainfall days in July - South Portland, ME
  • Average rainfall days in July: 14.7 days

The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall in July
South Portland, ME

Average snowfall in July - South Portland, ME
  • Average snowfall in July: 0"

The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
South Portland, ME

Average snowfall days in July - South Portland, ME
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in July
South Portland, ME

Average sea temperature in July - South Portland, ME
  • Average sea temperature in July: 61.3°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).

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Average daylight in July /
Average sunshine in July
South Portland, ME

Average daylight in July / Average sunshine in July - South Portland, ME
  • Average daylight in July: 15h and 1min

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 July: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in July
South Portland, ME

Average sunshine days in July - South Portland, ME
  • Average sunshine days in July: 13.8 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (13.8 days).

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Average UV index in July
South Portland, ME

Average UV index in July - South Portland, ME
  • Average UV index in July: 5

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).

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Average cloud cover in July
South Portland, ME

Average cloud cover in July - South Portland, ME
  • Average cloud cover in July: 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).

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Average visibility in July
South Portland, ME

Average visibility in July - South Portland, ME
  • Average visibility in July: 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).

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South Portland, Maine, USA

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