September Weather in Stamsund, Norway

Last updated: August 27, 2025

Experience the unique charm of Stamsund, Norway, in September, where coastal beauty meets varied weather. The month sees a maximum temperature of 16°C (60°F), with an average around 10°C (51°F), creating a crisp yet inviting atmosphere. As temperatures dip, nighttime lows can reach a minimum of 4°C (40°F), so packing layers is essential. With 112 mm (4.4 in) of rain spread over 17 days, expect a fair share of precipitation, contributing to the region's lush landscapes. The air is often filled with a refreshing 87% humidity, making for a greening and revitalizing experience. Embrace the beauty of September in Stamsund, where Nature is at its most dramatic.

September Temperature in Stamsund

As September rolls into Stamsund, Norway, a notable shift in temperatures occurs, marking the transition from the warm summer months into the crisp autumn season. With a minimum temperature of 4°C (40°F) and an average of 10°C (51°F), it offers a refreshing respite from the heat of July and August, where highs reached up to 19°C (66°F). The maximum temperature in September peaks at 16°C (60°F), reflecting a gentle decline from the summer's warmth. This month heralds a change in the landscape as the vibrant greens begin to give way to the rich hues of autumn, making it a captivating time for both locals and visitors to experience Stamsund's stunning natural beauty under cooler, crisp skies.

September Weather in Stamsund: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Stamsund, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stamsund, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec353435374148525451454138
Data source: Temperature data for Stamsund generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Stamsund

In September, Stamsund experiences a significant uptick in precipitation, receiving 112 mm (4.4 in) of rain over 17 days. This amount is nearly on par with the wetter months that follow, such as October, which sees 133 mm (5.2 in), indicating the onset of the more intense autumn rains. The transition from summer to autumn is clearly marked, with September's precipitation being markedly higher than the drier summer months like May and July. The increase in rainy days reflects this shift, as locals and visitors alike prepare for the season's return of frequent showers. Overall, September serves as a poignant reminder of the changing weather patterns in Stamsund, heralding the arrival of the wetter months ahead.

September Precipitation Trends in Stamsund

The chart displays monthly precipitation patterns in Stamsund, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Stamsund, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec113931077050515989113133163131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Stamsund

In Stamsund, Norway, September marks a slight uptick in humidity, averaging 87%. This increase follows a summer characterized by relatively stable levels of around 83% in both July and August, hinting at a trend of rising humidity as the autumn season approaches. The pattern of humidity throughout the year showcases a remarkable consistency, with peak levels primarily occurring in the winter months, such as January's high of 89%. As temperatures start to dip in fall, the return to 87% indicates that even as the warmth fades, the air remains rich with moisture, setting the stage for the cozy, crisp days ahead.

September Average Humidity in Stamsund

This chart illustrates the average monthly humidity levels in Stamsund, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Stamsund is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%85%83%77%82%83%83%87%88%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Stamsund

September in Stamsund, Norway, showcases a UV Index of 3, categorized as moderate. This marks a decline from the peak summer months, as the UV Index transitions from 5 in July and August. With a burn time of just 30 minutes, it's essential to stay mindful of sun exposure, even as the days begin to shorten. As autumn approaches, the UV levels are still strong enough to warrant caution, emphasizing the importance of protecting your skin during outdoor activities. For detailed insights and updates, visit the Stamsund UV Index.

Maximum UV Index Levels in Stamsund for September

The chart shows the monthly maximum UV Index (UVI) for Stamsund in September, 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. In September, the maximum UV index in Stamsund typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112345543110
Data source: Stamsund September 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.

September Sunshine in Stamsund

In September, Stamsund, Norway, basks in the gentle glow of 312 hours of sunlight, a notable contrast to the dimmer months that precede and follow it. As summer wanes, the long, bright days of July and August give way to shorter yet still vibrant days, allowing residents and visitors to savor the tail end of the season. This month represents a sweet spot, where nature's canvas sets into warm hues, and outdoor activities can still be enjoyed without the chill that looms in October. As autumn arrives, the sunshine gradually decreases, with October seeing only 200 hours, but the lingering warmth of September encapsulates a magical transition, making it a cherished time in this picturesque coastal town.

Monthly Sunshine Duration in Stamsund: September Highlighted

The September sunshine duration represents the total number of hours Stamsund experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec16h123h261h364h462h501h510h403h312h200h53h0h
Data source: Stamsund September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Stamsund During September

In Stamsund, Norway, the likelihood of sunny weather in September hovers at a modest 23%, reflecting a trend of diminishing sunshine as the year transitions from summer to autumn. This month stands alongside July and August, which also exhibit lower chances of sun, indicating a seasonal decline in brightness. While April and May boast the highest probabilities of sunny days, the cooler months from October onwards consistently show even less potential for sunlight, dropping to 17% in October. Thus, September captures the essence of a waning summer, where occasional sunny spells may still surprise, but are increasingly overshadowed by the encroaching autumn chill.

Percentage of Sunny Days in September in Stamsund

The chart illustrates the percentage of sunny days in Stamsund throughout the year, with September 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 Stamsund experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec32%24%25%36%38%28%23%25%23%17%20%30%
Data source: Stamsund September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Stamsund in September

As the seasons shift in Stamsund, Norway, September heralds a gradual transition from the bright, midnight sun of summer. With daylight lasting approximately 13 hours, the days begin to shorten, reflecting a steady decline from the peak of 24 hours in June. This month serves as a bridge, where the lingering warmth of summer meets the crispness of autumn, shedding light on the beauty of twilight. Following the vibrant 21 hours of daylight in May, September offers a softer glow, hinting at the approaching darker months while still providing plenty of opportunities to embrace the stunning landscapes under the waning sun.

Average Daylight Hours in Stamsund for September

The chart illustrates the variation in daylight duration in Stamsund throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 10m7h 43m11h 47m15h 53m21h 2m24h22h 42m17h 18m13h 7m9h 8m5h 28m3h 12m
Data source: Stamsund daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Stamsund

As September unfolds in Stamsund, Norway, the wind whispers a gentle yet invigorating presence, reaching an average speed of 7.4 m/s (17 mph). This month marks a slight decline from the summer's calmer breezes, peaking at 6.1 m/s (14 mph) in August. Interestingly, September’s winds begin to pick up again as autumn approaches, reflecting a broader trend of increasing wind speeds in the months that follow, with October rising to 7.8 m/s (17 mph) and November climbing even higher. This seasonal shift not only revitalizes the landscape but also sets the stage for the brisk, powerful gales characteristic of winter. Overall, September serves as a gentle bridge, transitioning from the relaxed warmth of summer to the more spirited winds of the approaching colder months, inviting both locals and visitors to savor the changing atmosphere.

Average September Wind Speed in Stamsund

The chart displays monthly wind speed patterns in Stamsund, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.58.69.08.16.76.27.56.17.4 m/s7.88.48.8
Data source: Stamsund September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Stamsund Compares to Other Months

Weather in Stamsund varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Stamsund, focusing on differences in temperature, rainfall, humidity, and UV levels.

In September, temperatures typically range from a chilly 4°C (40°F) to a mild 16°C (60°F), with an average of 10°C (51°F). The month is marked by considerable precipitation, averaging 112 mm (4.4 in) over 17 days, and a high humidity level of 87%. In contrast, January sees much colder temperatures, with a minimum of -5°C (22°F), averaging just 2°C (36°F), and a maximum of 8°C (47°F). Although precipitation remains similar at 113 mm (4.4 in) over 16 days, the humidity increases slightly to 89%. For a more detailed look at January weather, visit Stamsund weather in January.

September and February present markedly different weather conditions. September tends to be milder, with average temperatures around 10°C (51°F) and highs reaching up to 16°C (60°F), while February is much colder, with an average temperature of just 1°C (34°F) and a maximum of 7°C (45°F). Both months experience high humidity levels of 87%, but September sees more precipitation, totaling 112 mm (4.4 in) over 17 days compared to February's 93 mm (3.7 in) over 16 days. For more details on February's weather, you can check Stamsund weather in February.

September and March showcase strikingly different weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 16°C (60°F), with an average of 10°C (51°F). This month also sees considerable rainfall, with 112 mm (4.4 in) of precipitation over 17 days and a high humidity level of 87%. In contrast, March is colder, with temperatures dipping as low as -5°C (24°F) and reaching a maximum of only 7°C (45°F), averaging just 2°C (35°F). Although March also experiences significant precipitation at 107 mm (4.2 in), it occurs over more days—20 in total—while maintaining a slightly lower humidity of 85%. For a more detailed look at March weather, you can visit Stamsund weather in March.

September and April present notable differences in weather conditions. September typically enjoys a milder climate, with average temperatures reaching around 10°C (51°F) and highs of 16°C (60°F), while April tends to be cooler, with an average temperature of only 3°C (37°F) and maximums peaking at 8°C (47°F). Additionally, September experiences more precipitation, with 112 mm (4.4 in) falling over 17 days, compared to April’s 70 mm (2.8 in) over 15 days. Humidity levels are slightly higher in September at 87%, while April has 83% humidity. For more detailed insights, you can check Stamsund weather in April.

In comparing the weather conditions of September and May, September generally offers milder temperatures, with a minimum of 4°C (40°F) and a maximum reaching 16°C (60°F), averaging around 10°C (51°F). In contrast, May experiences cooler temperatures, with lows of 0°C (33°F) and highs peaking at 12°C (54°F), averaging just 5°C (42°F). September also tends to be wetter, receiving 112 mm (4.4 in) of precipitation over 17 days, while May sees significantly less rainfall at 50 mm (2.0 in) over 12 days. Additionally, September is more humid with an average humidity level of 87%, compared to May's 77%. For more details, you can check Stamsund weather in May.

When comparing the weather in September and June, it's clear that September tends to be slightly warmer on average, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 16°C (60°F), contrasted with June's temperatures that range from a minimum of 3°C (37°F) to a maximum of 14°C (58°F). Additionally, September experiences significantly higher precipitation, with 112 mm (4.4 in) over 17 days, compared to June's 51 mm (2.0 in) over 13 days. Humidity levels are also higher in September at 87%, compared to June’s 82%. For more detailed information about June weather, you can visit Stamsund weather in June.

In comparison to July, September tends to be cooler and wetter. While July enjoys a milder temperature range with a minimum of 7°C (45°F) and a maximum of 19°C (67°F), September sees temperatures drop to a minimum of 4°C (40°F) and a maximum of 16°C (60°F). This shift is accompanied by increased precipitation, with September receiving 112 mm (4.4 in) over 17 days, compared to July's 59 mm (2.3 in) over 10 days. Additionally, humidity levels are slightly higher in September at 87%, compared to 83% in July. For more detailed weather information for July, you can visit Stamsund weather in July.

September weather sees cooler temperatures compared to August, with minimums dropping from 8°C (47°F) to 4°C (40°F) and maximums decreasing from 19°C (66°F) to 16°C (60°F). The average temperature also falls slightly, from 12°C (54°F) in August to 10°C (51°F) in September. Precipitation increases in September, with 112 mm (4.4 in) recorded over 17 days, compared to 89 mm (3.5 in) over 14 days in August. Moreover, September tends to be more humid, with a relative humidity of 87%, up from 83% in August. For more details on August weather, you can view Stamsund weather in August.

September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 16°C (60°F), with an average of 10°C (51°F). The month sees a total precipitation of 112 mm (4.4 in) over 17 days, along with a high humidity level of 87%. In contrast, October tends to be cooler, with minimum temperatures dropping to 2°C (35°F) and an average of 7°C (45°F), while the maximum reaches 15°C (59°F). Precipitation increases to 133 mm (5.2 in) over 18 days, accompanied by a slight rise in humidity to 88%. For more detailed insights, you can check Stamsund weather in October.

In September, the weather is characterized by milder temperatures, with a minimum of 4°C (40°F), an average of 10°C (51°F), and a maximum of 16°C (60°F). This month typically sees 112 mm (4.4 in) of precipitation over 17 days, maintaining a consistent humidity level of 87%. In contrast, November experiences a drop in temperatures, with a minimum of -2°C (28°F), an average of 5°C (42°F), and a maximum of 11°C (51°F). This month features increased precipitation, totaling 163 mm (6.4 in) spread over 24 days, while also retaining the same humidity of 87%. For more detailed information, you can check out Stamsund weather in November.

September and December exhibit distinctly different weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 16°C (60°F), with an average of 10°C (51°F). The month sees a relatively moderate precipitation level of 112 mm (4.4 in) over 17 days, accompanied by high humidity at 87%. In contrast, December experiences colder conditions, with temperatures dipping as low as -4°C (25°F) and averaging around 3°C (38°F). The maximum temperature reaches only 8°C (47°F). Additionally, December records slightly higher precipitation at 131 mm (5.2 in) over 19 days, while humidity remains consistent at 87%. For more detailed insights about the weather in December, you can check Stamsund weather in December.

Compare Stamsund's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Stamsund

As September wraps up summer, Stamsund experiences a noticeable shift in weather, marked by cooler temperatures and increased humidity. The month tends to be wetter, with frequent rain showers adding to the overall ambiance of the crisp autumn air. While the days may still be mild, the evenings bring a chill that signals the impending change of seasons. These distinctive characteristics set September apart from the warmer, sunnier months, making it a unique time to embrace the beauty of transitioning landscapes. For more insights on what to expect throughout the year, visit Stamsund Climate.