July weather forecast
Belfast, ME

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Weather in July

July is the most scorching month in Belfast, Maine, when summer is at its peak. Weather conditions can switch from warm, sunny days to occasional summer showers. Despite the prevalent heat, it is the month with the hottest temperatures, peaking at a sweltering 73.9°F (23.3°C). July is the ideal time for locals to cool off in Maine's beautiful coastline, and tourists flock to the town to take advantage of its quintessential New England summer. Amid these conditions, summer events take over the small town, making it a vibrant and lively place to be.

Temperature

The months of July and August see the peak of Belfast's temperatures, averaging a high of 73.9°F (23.3°C).

Humidity

February and July, with an average relative humidity of 83%, are the most humid months.

Rainfall

The months with the least rainfall are July and September Rain falls for 14.5 days and accumulates 1.46" (37mm) of rain.

Snowfall

June through September are months without snowfall in Belfast, Maine.

Ocean temperature

In Belfast, Maine, in July, the average water temperature is 58.5°F (14.7°C).
Note: With an efficient thermal swimsuit, one can navigate 58.5°F (14.7°C) even if it's colder than 50°F (10°C); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 55.4°F (13°C) feels chilly.

Daylight

In Belfast, the average length of the day in July is 15h and 8min.
On the first day of the month, sunrise is at 4:55 am and sunset at 8:24 pm. On the last day of July, in Belfast, sunrise is at 5:22 am and sunset at 8:02 pm EDT.

Sunshine

The average sunshine in July is 9.4h.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 5 in July leads to these recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest in Belfast?

July and August are the warmest months, with an average high-temperature of 73.9°F (23.3°C).

What is the usual temperature for Belfast in July?

In July, in Belfast, the average high-temperature is 73.9°F (23.3°C), and the average low-temperature is 57.7°F (14.3°C).

What are the most humid months?

The months with the highest humidity are February and July, with an average relative humidity of 83%.

What is the average humidity in July?

The average relative humidity in July is 83%.

What is the driest month?

July and September are months with the least rain in Belfast when the rain falls for 14.5 days and typically aggregates up to 1.46" (37mm) of rain.

How much does it rain in July?

In Belfast, during July, the rain falls for 14.5 days and regularly aggregates up to 1.46" (37mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

What is the ocean temperature in July?

In July, the average ocean temperature is 58.5°F (14.7°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in July?

The average day length in July is 15h and 8min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 4:55 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:02 pm EDT.

How long on average sun shines in July?

In July, the average sunshine duration is 9.4h.

What are the months with the highest UV index?

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 Belfast, the average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
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
Belfast, ME

Average temperature in July - Belfast, ME
  • Average high temperature in July: 73.9°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 July: 57.7°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 July
Belfast, ME

Average pressure in July - Belfast, ME
  • Average pressure in July: 29.93"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 July
Belfast, ME

Average wind speed in July - Belfast, ME
  • Average wind speed in July: 6mph

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 July
Belfast, ME

Average humidity in July - Belfast, ME
  • Average humidity in July: 83%

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 July
Belfast, ME

Average rainfall in July - Belfast, ME
  • Average rainfall in July: 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 July
Belfast, ME

Average rainfall days in July - Belfast, ME
  • Average rainfall days in July: 14.5 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 July
Belfast, ME

Average snowfall in July - Belfast, ME
  • Average snowfall in July: 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 July
Belfast, ME

Average snowfall days in July - Belfast, ME
  • Average snowfall days in July: 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 sea temperature in July
Belfast, ME

Average sea temperature in July - Belfast, ME
  • Average sea temperature in July: 58.5°F

The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).

Average daylight in July /
Average sunshine in July
Belfast, ME

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

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 July: 9h and 2min

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 July
Belfast, ME

Average sunshine days in July - Belfast, ME
  • Average sunshine days in July: 14.7 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 July
Belfast, ME

Average UV index in July - Belfast, 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).

Average cloud cover in July
Belfast, ME

Average cloud cover in July - Belfast, ME
  • Average cloud cover in July: 41

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 July
Belfast, ME

Average visibility in July - Belfast, ME
  • Average visibility in July: 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).

Belfast, Maine, USA

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