Portland
Maine, USA
Long-term weather forecast
Long-term weather forecast

November weather forecast and climate
Portland, ME

Dusk view of the lit skyscrapers of the Portland city in Maine
Dusk view of the lit skyscrapers of the Portland city in Maine
November, the last month of the autumn, in Portland, is another chilly month, with average temperature ranging between min 30.9°F (-0.6°C) and max 48°F (8.9°C).

Temperature

In November, the average high-temperature decreases, from a moderate 58.6°F (14.8°C) in October, to a frosty 48°F (8.9°C). In Portland, the average low-temperature is 30.9°F (-0.6°C).

Humidity

The average relative humidity in Portland is 72.6%.

Rainfall

November is the month with the most rainfall in Portland, Maine. Rain falls for 11.2 days and accumulates 4.9" (125.2mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall.

Ocean temperature

In November, the average ocean temperature in Portland, Maine, is 49.6°F (9.8°C).
Note: 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.

Daylight

The average length of the day in November is 9.7h.

Sunshine

The average sunshine in November is 4.6h.

UV index

In Portland, the average daily maximum UV index in November is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 in November interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in November in Portland?

In November, in Portland, the average high-temperature is 48°F (8.9°C), and the average low-temperature is 30.9°F (-0.6°C).

What is the average humidity in November in Portland?

The average relative humidity in November in Portland, Maine, is 72.6%.

How many days does it rain in November in Portland?

In Portland, Maine, during November, the rain falls for 11.2 days and regularly aggregates up to 4.9" (125.2mm) of precipitation.

What is the wettest month in Portland?

November is the month with the most rainfall in Portland, Maine. Rain falls for 11.2 days and accumulates 4.9" (125.2mm) of precipitation.

When does it start snowing in Portland?

November is the first month it typically snows in Portland. Throughout November, in the average 1.5 snowfall days, it receives 1.9" (48.3mm) of snow.

What is the ocean temperature in November in Portland?

In Portland, the average seawater temperature in November is 49.6°F (9.8°C). Swimming in 49.6°F (9.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in November in Portland?

The average length of the day in November in Portland, Maine, is 9.7h.

How many hours of sunshine does Portland have in November?

The average sunshine in November is 4.6h.

How high is the UV index in November in Portland?

In Portland, Maine, the average daily maximum UV index in November is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in November - Portland, ME
  • Average high temperature in November: 48°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (31.2°F).

  • Average low temperature in November: 30.9°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (13.4°F).

Average humidity in November - Portland, ME
  • Average humidity in November: 72.6%

The month with the highest relative humidity is September (76.7%).
The month with the lowest relative humidity is February (65.2%).

Average rainfall in November - Portland, ME
  • Average rainfall in November: 4.9"

Wettest months (with the highest rainfall) are October and November (4.9").
The driest month (with the lowest rainfall) is August (3.1").

Average rainfall days in November - Portland, ME
  • Average rainfall days in November: 11.2 days

The month with the highest number of rainy days is May (12.6 days).
The month with the lowest number of rainy days is September (9.2 days).

Average snowfall in November - Portland, ME
  • Average snowfall in November: 1.9"

The month with the highest snowfall is January (19.2").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in November - Portland, ME
  • Average snowfall days in November: 1.5 days

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

Average sea temperature in November - Portland, ME
  • Average sea temperature in November: 49.6°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 November / Average sunshine in November - Portland, ME
  • Average daylight in November: 9.7h

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in November: 4.6h

The month with most sunshine is July (Average sunshine: 9.1h).
The month with least sunshine is December (Average sunshine: 4.5h).

Average UV index in November - Portland, ME
  • Average UV index in November: 2

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).