Portsmouth
New Hampshire, USA
Long-term weather forecast
Long-term weather forecast

November weather forecast and climate
Portsmouth, NH

Bright neon lights and buildings next to the very calm waters of the iconic Piscataqua River in Portsmouth, New Hampshire, the clear dusk sky in close up view
Bright neon lights and buildings next to the very calm waters of the iconic Piscataqua River in Portsmouth, New Hampshire, the clear dusk sky in close up view
The last month of the autumn, November, is another chilly month in Portsmouth, New Hampshire, with average temperature ranging between min 34°F (1.1°C) and max 48°F (8.9°C).

Temperature

In Portsmouth, the average high-temperature drops, from a moderate 59°F (15°C) in October, to a frosty 48°F (8.9°C). The average low-temperature, in November, is 34°F (1.1°C).

Rainfall

The month with the most rainfall in Portsmouth, New Hampshire, is November when the rain falls for 11 days and typically aggregates up to 4.9" (125mm) of precipitation.

Ocean temperature

In November, the average ocean temperature in Portsmouth, New Hampshire, is 49.8°F (9.9°C). Swimming in 49.8°F (9.9°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Portsmouth, the average length of the day is 9.7h.

Sunshine

January, November and December, with an average of 5h of sunshine, are months with the least sunshine.

UV index

The average daily maximum UV index in November is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to the UV radiation for ordinary individuals.
The average daily UV index of 2 transform into the following instructions:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in November in Portsmouth?

The average high-temperature, in November, is 48°F (8.9°C), while the average low-temperature is 34°F (1.1°C).

How much does it rain in Portsmouth in November?

In Portsmouth, New Hampshire, during November, the rain falls for 11 days and regularly aggregates up to 4.9" (125mm) of precipitation.

What is the rainiest month in Portsmouth?

November is the month with the most rainfall in Portsmouth, New Hampshire. Rain falls for 11 days and accumulates 4.9" (125mm) of precipitation.

What is the water temperature in November in Portsmouth?

In Portsmouth, New Hampshire, the average seawater temperature in November is 49.8°F (9.9°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.

How many hours of daylight does Portsmouth have in November?

In November, the average length of the day in Portsmouth is 9.7h.

What is the month with the least sunshine in Portsmouth?

Months with the least sunshine in Portsmouth are January, November and December, with an average of 5h of sunshine.

How many hours of sunshine does Portsmouth have in November?

In November, the average sunshine in Portsmouth is 5h.

What is the UV index reading in November in Portsmouth?

In Portsmouth, New Hampshire, the average daily maximum UV index in November is 2. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.
Average temperature in November - Portsmouth, NH
  • Average high temperature in November: 48°F

The warmest month (with the highest average high temperature) is July (79°F).
Months with the lowest average high temperature are January and February (32°F).

  • Average low temperature in November: 34°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (16°F).

Average rainfall in November - Portsmouth, NH
  • Average rainfall in November: 4.9"

The wettest month (with the highest rainfall) is November (4.9").
The driest month (with the lowest rainfall) is August (2.8").

Average rainfall days in November - Portsmouth, NH
  • Average rainfall days in November: 11 days

Months with the highest number of rainy days are May and December (12 days).
The month with the lowest number of rainy days is September (8 days).

Average sea temperature in November - Portsmouth, NH
  • Average sea temperature in November: 49.8°F

The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).

Average daylight in November / Average sunshine in November - Portsmouth, NH
  • Average daylight in November: 9.7h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in November: 5h

Months with most sunshine are June, July and August (Average sunshine: 9h).
Months with least sunshine are January, November and December (Average sunshine: 5).

Average UV index in November - Portsmouth, NH
  • 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).