November Weather in Portsmouth, United States

Last updated: February 24, 2025

November in Portsmouth, United States, brings a mix of mild and chilly conditions, with temperatures ranging from a maximum of 20°C (69°F) to a minimum of -12°C (11°F), averaging around 6°C (43°F). This month sees 108 mm (4.3 in) of rainfall over 11 days, contributing to a relatively high humidity level of 84%. As autumn transitions into winter, residents can expect a blend of crisp air and occasional wet weather, making it a month for cozy layers and indoor activities.

November Temperature in Portsmouth

In November, Portsmouth experiences a distinct transition as autumn gives way to winter. Temperatures start to drop, with minimums reaching around -12°C (11°F), while average conditions hover around a cool 6°C (43°F). Despite the chill in the air, the city enjoys pleasant maximums of 20°C (69°F), allowing for crisp but comfortable outdoor activities. This month marks a significant shift from the mild temperatures of October, evidenced by a noticeable drop in the average temperature, yet the mild highs still offer a touch of warmth, making November a uniquely vibrant time in Portsmouth as the landscape prepares for the winter ahead.

November Weather in Portsmouth: Daily Temperature Highs, Lows, and Averages

The chart illustrates November temperature patterns in Portsmouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec303236465565717165554334
Data source: Temperature data for Portsmouth generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

November Precipitation in Portsmouth

In November, Portsmouth experiences a moderate level of precipitation, with total rainfall measuring 108 mm (4.3 in) over approximately 11 days. This amount is slightly below the heavier October rainfall of 142 mm (5.6 in), showcasing a gradual shift into the drier winter months. As autumn transitions to winter, November maintains a balanced humidity that is a hallmark of the season. Interestingly, while precipitation amounts fluctuate throughout the year, November's totals reflect a consistency often seen in early winter months, positioning it as a bridge between fall's generous rains and the colder, potentially snowier conditions of December. The overall pattern reveals that while rainfall is significant in the fall, it begins to taper off as the year draws to a close.

November Precipitation Trends in Portsmouth

The chart displays monthly precipitation patterns in Portsmouth, with values for each month alongside November's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how November's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec79989414383881237178143108133
Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.
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November Humidity in Portsmouth

In November, Portsmouth experiences a notable increase in humidity, with levels rising to 84%, a shift from the cooler, drier months of summer and early fall. As the year progresses from the more humid winter months of January (86%) and February (84%), humidity begins to decline from spring through summer, reaching its lowest point in August at 66%. However, just as autumn sets in, the humidity starts to creep back up, peaking again in November before descending into the somewhat milder conditions of December at 81%. This cyclical pattern highlights Portsmouth's humid climate, particularly during the transition from cool to colder months, making November a month of refreshing, moist air as the winter season approaches.

November Average Humidity in Portsmouth

This chart illustrates the average monthly humidity levels in Portsmouth, with November's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how November's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for November generated using information from the Copernicus Climate Change Service.

November UV Index in Portsmouth

As November rolls into Portsmouth, the UV Index reflects a soothing shift toward lower levels, registering at 3 and falling into the moderate exposure category. This marks a notable decline from the peak summer months, where indices soared to 9 and 10, demanding careful sun protection in minimal exposure times of just 15 minutes. With the cooler weather settling in, residents can enjoy outdoor activities with a burn time of 30 minutes, allowing for a more relaxed approach to sun safety without compromising on enjoyment. This trend of diminishing UV levels continues into December, making November an ideal time to soak in the remaining gentle rays before winter’s chill sets in. For more details on the UV Index and how to protect yourself, visit Portsmouth UV Index.

Maximum UV Index Levels in Portsmouth for November

The chart shows the monthly maximum UV Index (UVI) for Portsmouth in November, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Portsmouth November UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

November Sunshine in Portsmouth

November in Portsmouth brings a gentle transition into the cooler months, with 193 hours of sunshine illuminating the landscape. While this is a decline from the sunny heights of summer—with July and August each basking in over 330 hours—November still offers a considerable amount of daylight compared to the winter months ahead. The trend shows a steady tapering off from the summer's abundance, with sunshine hours descending from a peak 337 hours in August to a more subdued but still pleasant November. This moderate sunshine serves as a reminder to cherish the lingering warmth before the winter settles in, creating a reflective atmosphere as the year draws to a close.

Monthly Sunshine Duration in Portsmouth: November Highlighted

The November sunshine duration represents the total number of hours Portsmouth experiences direct sunlight during the month of November, excluding cloudy or obstructed periods. This chart compares the sunshine duration of November with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec150h183h256h245h295h330h335h337h285h221h193h176h
Data source: Portsmouth November Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Portsmouth During November

In November, Portsmouth experiences a notable increase in the likelihood of sunny weather, with a 54% chance of sunshine, making it one of the brighter months of the year. This is a refreshing contrast to the typically gloomier summer months, such as July and August, where the sunniest days are at their lowest, at only 32%. Overall, while autumn tends to bring a mix of variable weather, November stands out with its above-average sunshine potential compared to earlier months, inviting residents and visitors alike to enjoy the crisp autumn air under clearer skies.

Percentage of Sunny Days in November in Portsmouth

The chart illustrates the percentage of sunny days in Portsmouth throughout the year, with November highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Portsmouth experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%35%61%40%38%40%32%32%44%38%54%32%
Data source: Portsmouth November chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Portsmouth in November

As autumn gives way to winter in Portsmouth, November marks a notable decrease in daylight, continuing the trend from October. With only 9 hours of daylight, the month mirrors the short days of January and December, creating a sense of seasonal closure. Prior to November, the increasing lengths of daylight from January to June offered an uplifting transition through spring and summer, peaking at 15 hours in June. However, consistency emerges in the latter part of the year, as both November and December settle at 9 hours, signaling a period of introspection and cozy indoors as the days draw shorter and nights become longer. This rhythm of daylight provides a natural cadence to the year, reminding residents of the cyclical dance of the seasons.

Average Daylight Hours in Portsmouth for November

The chart illustrates the variation in daylight duration in Portsmouth throughout the year, with November highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 23m10h 31m11h 57m13h 26m14h 40m15h 18m14h 57m13h 51m12h 26m10h 58m9h 41m9h 2m
Data source: Portsmouth daylight hours, calculated by summing the hours between sunrise and sunset for each day.

November Winds in Portsmouth

As November arrives in Portsmouth, the average wind speed holds steady at 4.6 m/s (10 mph), closely mirroring the conditions of the preceding month. This slight uptick from the summer lows of 3.5 m/s (8 mph) in July and 3.3 m/s (7 mph) in August illustrates a transition as the cooler autumn weather sets in. Despite the fluctuations seen throughout the year, with the spring months experiencing a peak at 5.2 m/s (12 mph) in March, November marks a period of consistency, as the winds become a gentle reminder of the approaching winter. With the winds dancing through the trees and rustling fallen leaves, Portsmouth's November is characterized not only by a chill in the air but also by a stabilizing breeze that wraps the city in its cool embrace.

Average November Wind Speed in Portsmouth

The chart displays monthly wind speed patterns in Portsmouth, with values for each month shown alongside November's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how November's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.74.75.24.44.24.13.53.33.94.44.6 m/s4.6
Data source: Portsmouth November wind data, generated using information from the Copernicus Climate Change Service.

How November Weather in Portsmouth Compares to Other Months

The weather in Portsmouth changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of November's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Portsmouth and find detailed weather information for every month.

November and January both showcase the changing moods of winter, but they bring distinctly different weather patterns. In November, temperatures range from a low of -12°C (11°F) to a high of 20°C (69°F), with an average of 6°C (43°F), while January temperatures dip more drastically, with minimums of -19°C (-2°F) and an average temperature of -1°C (30°F). November experiences more precipitation at 108 mm (4.3 in) over approximately 11 days, compared to January's 79 mm (3.1 in) over 8 days. Additionally, humidity remains relatively high in both months, with November at 84% and January slightly higher at 86%. For more detailed information on January weather in Portsmouth, visit Portsmouth weather in January.

November and February showcase contrasting yet similar winter characteristics. In November, temperatures swing from a chilly minimum of -12°C (11°F) to an average of 6°C (43°F), with a maximum reaching 20°C (69°F). The month experiences 108 mm (4.3 in) of precipitation over 11 days, coupled with a humidity level of 84%. February, on the other hand, sees slightly colder conditions, with minimum temperatures dropping to -16°C (4°F) and an average temperature of 0°C (32°F), while the maximum is capped at 17°C (64°F). The precipitation decreases to 98 mm (3.9 in) over the same number of days but maintains the same humidity level of 84%. Despite being the colder month, February remains comparably humid and consistently wet. For a detailed look at February's climate specifics, you can visit Portsmouth weather in February.

November and March showcase distinct weather patterns, reflecting the transition between autumn and spring. November experiences milder temperatures with an average of 6°C (43°F) and a maximum of 20°C (69°F), while March is generally cooler, with an average of 2°C (36°F) and a maximum of 17°C (63°F). Both months see notable precipitation, with November receiving 108 mm (4.3 in) over 11 days and March slightly less at 94 mm (3.7 in) over 10 days. Humidity levels are similar, with November at 84% and March at 82%, indicating a consistently damp atmosphere. For more detailed information, you can refer to Portsmouth weather in March.

When comparing the weather in November and April, it's clear that both months exhibit cooler temperatures but with some notable differences. In November, temperatures range from a chilly minimum of -12°C (11°F) to a maximum of 20°C (69°F), with an average of 6°C (43°F). Precipitation occurs on about 11 days, totaling 108 mm (4.3 in), along with relatively high humidity at 84%. Conversely, April shows slightly milder conditions, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 24°C (76°F) and an average of 8°C (46°F). Although April experiences a bit more precipitation at 143 mm (5.6 in) over 13 days, its humidity is slightly lower at 80%. For more details on the specifics of April weather, check out Portsmouth weather in April.

November and May present contrasting weather patterns, showcasing the transition from autumn to spring. In November, temperatures can drop as low as -12°C (11°F), with an average of 6°C (43°F) and a maximum reaching 20°C (69°F). The month also sees significant precipitation, totaling 108 mm (4.3 in) over about 11 days, creating a humid environment with an 84% humidity level. Conversely, May brings milder conditions, starting at a minimum of 2°C (37°F) and averaging 13°C (55°F), with highs reaching up to 27°C (82°F). Precipitation decreases to 83 mm (3.3 in) across the same number of rainy days, accompanied by lower humidity at 72%. This stark difference highlights May's more pleasant and inviting climate compared to the chilly dampness of November. For more specific details, you can explore Portsmouth weather in May.

November and June present contrasting weather patterns, reflecting the transition from fall to summer. In November, temperatures can range from a chilly minimum of -12°C (11°F) to a mild maximum of 20°C (69°F), with an average of 6°C (43°F). This month also sees considerable humidity at 84% and precipitation totaling 108 mm (4.3 in) over approximately 11 days. In stark contrast, June offers much warmer conditions, with temperatures ranging from a minimum of 8°C (47°F) to a pleasant maximum of 30°C (86°F) and an average of 18°C (65°F). The humidity in June is lower, at 72%, and it receives slightly less precipitation, with 88 mm (3.5 in) over about 10 days. For more detailed information, you can check out Portsmouth weather in June.

November and July present markedly different weather conditions. In November, temperatures can drop to a chilly minimum of -12°C (11°F), with an average of 6°C (43°F) and a maximum of 20°C (69°F). This month experiences significant humidity at 84% and sees around 108 mm (4.3 in) of precipitation over approximately 11 days. Conversely, July boasts much warmer temperatures, with a minimum of 13°C (56°F), an average of 22°C (71°F), and a maximum of 31°C (88°F). Though it has slightly higher precipitation at 123 mm (4.8 in) over about 12 days, the humidity is lower at 67%. For a more detailed look at the weather during July, you can visit Portsmouth weather in July.

November weather is markedly cooler compared to August, with temperatures ranging from a minimum of -12°C (11°F) to a maximum of 20°C (69°F) and an average of 6°C (43°F). In contrast, August offers much warmer conditions, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 31°C (88°F) and an average of 22°C (71°F). Additionally, November experiences higher precipitation, with 108 mm (4.3 in) over 11 days, while August has a lighter rainfall total of 71 mm (2.8 in) across just 9 days. Humidity levels are also different, sitting at 84% in November, compared to 66% in August. For more details on August weather, you can check Portsmouth weather in August.

In comparing the weather of November and September, it is evident that November experiences significantly colder temperatures, with daily averages ranging from a minimum of -12°C (11°F) to a maximum of 20°C (69°F). In contrast, September enjoys milder temperatures, ranging from a minimum of 7°C (46°F) up to a warm 30°C (86°F), with an average of 18°C (65°F). Additionally, September sees less precipitation, totaling 78 mm (3.1 in) over 8 days, compared to November's 108 mm (4.3 in) spread across 11 days. The humidity levels are also higher in November at 84%, compared to September’s 71%, emphasizing the transition from the warmth of early autumn to the chill of late fall. For more detailed information about September conditions, visit Portsmouth weather in September.

When comparing the weather between October and November, we observe a notable shift in temperature and precipitation. November experiences a wider range of temperatures, with a minimum of -12°C (11°F) compared to October's minimum of 1°C (34°F). The average temperature in November is cooler at 6°C (43°F), while October boasts a more moderate average of 13°C (56°F). Precipitation also varies, with November receiving 108 mm (4.3 in) over 11 days, slightly less than October's 142 mm (5.6 in) across the same number of days. Additionally, November's humidity rises to 84%, compared to October's 78%. For a more detailed look at October weather specifically, visit Portsmouth weather in October.

November and December exhibit notable differences in weather as the region transitions deeper into winter. In November, temperatures range from a minimum of -12°C (11°F) to a maximum of 20°C (69°F), with an average of 6°C (43°F). The month experiences 108 mm (4.3 in) of precipitation over 11 days, accompanied by a relatively high humidity of 84%. In contrast, December brings colder conditions, with temperatures dropping to a minimum of -19°C (-1°F) and averaging around 1°C (34°F), while the maximum reaches 15°C (59°F). Precipitation in December increases slightly to 133 mm (5.2 in) over 10 days and humidity slightly decreases to 81%. For more details on the weather in December, you can refer to Portsmouth weather in December.

Compare Portsmouth's Climate with Cities Worldwide

Conclusion: What to Expect From November Weather in Portsmouth

As November rolls into Portsmouth, the weather signals a dramatic shift from the mild temperatures of previous months, ushering in a cooler atmosphere. With an average chill and a potential dip into frost, residents experience a notable decrease in warmth, contrasting the lingering autumn hues. Despite the heightened humidity levels that persist throughout the month, November also brings a fair share of rain, resulting in frequent precipitation days that can redefine the landscape. This transitional period is a reminder of the colder months ahead, prompting locals to adapt their routines and attire accordingly. To explore more about how weather patterns evolve throughout the year, visit Portsmouth Climate.