September Weather in Narva, Estonia

Last updated: August 21, 2025

In Narva, Estonia, September greets residents and visitors with a blend of mild temperatures and refreshing rainfall. With a maximum of 26°C (79°F), the days can be pleasantly warm, while the average temperature hovers around 12°C (55°F), indicating the onset of autumn. Early risers might start their mornings with a chill, as temperatures dip to a minimum of 2°C (36°F). This month records a total precipitation of 77 mm (3.0 in) over approximately 14 days, contributing to the high humidity of 90%, which envelops the region in a moist embrace. Perfect for experiencing the beauty of changing leaves and the cozy atmosphere of the season!

September Temperature in Narva

As September rolls into Narva, Estonia, a noticeable transition in temperatures occurs, signaling the shift from summer's warmth to the cusp of autumn. With minimums around 2°C (36°F) and an average of 12°C (55°F), the days begin to cool, yet the maximums can still reach a pleasant 26°C (79°F), offering a delightful opportunity to enjoy the crisp air and vibrant autumn foliage. This month's temperatures highlight a clear trend of cooling after a warm summer, peaking in August, while still providing comfortable days that invite exploration. As September progresses, residents can relish the last hints of summer before the chill of October sets in.

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

The chart illustrates September temperature patterns in Narva, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Narva, 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).
JanFebMarAprMayJunJulAugSepOctNovDec272631405162646254453729
Data source: Temperature data for Narva 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.

September Precipitation in Narva

In September, Narva, Estonia experiences considerable rainfall, with an average of 77 mm (3.0 in) spreading over 14 days. This month marks a shift from the heavier precipitation seen in August's 99 mm (3.9 in), yet it remains among the wetter months of the year. As summer transitions to autumn, the frequency of rainy days continues to rise, setting the stage for a more moist climate ahead. The consistent precipitation serves to nourish the lush landscapes, while the cooler temperatures begin to envelop the city, hinting at the impending winter months. Overall, September is a pivotal time in Narva, bridging the vibrant summer and the serene but often chilly fall season.

September Precipitation Trends in Narva

The chart displays monthly precipitation patterns in Narva, 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 Narva, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec445254506556759977795870
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Narva

In September, Narva, Estonia experiences a notable humidity level of 90%, maintaining a trend of elevated moisture as the summer months transition into autumn. Following the warm, humid days of August—which saw a humidity rate of 86%—the air begins to feel crisper yet remains noticeably damp as temperatures start to drop. This period marks a gradual shift toward the wetter months of late autumn, where humidity levels hover consistently in the low to mid-nineties throughout the coming months. As such, September's humidity is a reminder of the lingering warmth of summer while setting the stage for the cooler, more humid days ahead.

September Average Humidity in Narva

This chart illustrates the average monthly humidity levels in Narva, 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 Narva is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%94%90%86%71%77%82%86%90%93%93%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Narva

As September rolls in Narva, Estonia, the UV Index dips to 4, placing it in the moderate exposure category. This means you'll have about 30 minutes of safe sun exposure before needing to seek shade. In contrast to the height of summer, where July and August boasted a high UV Index of 6 and 7, September provides a gentler sun, making it ideal for enjoying the outdoors without as much risk of skin damage. While the UV Index steadily decreased from the scorching summer months, it remains crucial to stay vigilant about sun protection during these early autumn days. For more specific insights on UV levels, visit Narva UV Index.

Maximum UV Index Levels in Narva for September

The chart shows the monthly maximum UV Index (UVI) for Narva 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 Narva typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457764211
Data source: Narva 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 Narva

In September, Narva, Estonia, basks in a modest 301 hours of sunshine, marking a beautiful transition from the vibrant summer months into the cooler fall season. Following a peak in sunlight during June and July, this month still benefits from significant daylight but begins to hint at the impending overcast of autumn. While September's sunshine is less intense than the summer's 480 hours in June, it stands in contrast to the more subdued 207 hours expected in October, showing a gentle yet noticeable decline. This gradual tapering of daylight encapsulates the charm of the season, inviting residents and visitors alike to enjoy the crisp air and the lingering warmth of summer before the long winter sets in.

Monthly Sunshine Duration in Narva: September Highlighted

The September sunshine duration represents the total number of hours Narva 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.
JanFebMarAprMayJunJulAugSepOctNovDec48h123h262h357h443h480h472h402h301h207h106h46h
Data source: Narva September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Narva During September

In Narva, Estonia, the likelihood of enjoying sunny weather in September stands at 20%, which reflects a gradual decline in sun chances as summer peaks. Following a vibrant July and August, both boasting a 57% chance of sun, September signals the onset of autumn, bringing cooler temperatures and a shift in weather patterns. This month, alongside May and June, represents a transition, as the days become shorter and cloud cover increases. Although September's sunny probabilities are lower than the summer months, they still offer a pleasant escape, making it a time for those seeking a balance between summer warmth and the tranquility of early fall.

Percentage of Sunny Days in September in Narva

The chart illustrates the percentage of sunny days in Narva 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 Narva experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec7%11%36%42%31%57%57%26%20%28%14%7%
Data source: Narva September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Narva in September

As summer gives way to autumn in September, Narva, Estonia experiences a gentle transition in daylight, with the sun gracing the city for about 12 hours each day. This marks a reduction from the 17 hours enjoyed in June and July, illustrating the gradual shift toward shorter days that characterizes the fall season. With daylight slowly diminishing, September serves as a poignant bridge between the vibrant, sun-drenched days of summer and the early, darker onset of autumn. While daylight decreases further into October, the lingering warmth of September still invites outdoor activities, making it a delightful time for both locals and visitors to relish the beauty of nature before winter's approach.

Average Daylight Hours in Narva for September

The chart illustrates the variation in daylight duration in Narva throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec6h 57m9h 13m11h 51m14h 33m17h 2m18h 28m17h 42m15h 24m12h 46m10h 6m7h 37m6h 11m
Data source: Narva daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Narva

In September, Narva, Estonia experiences a gentle, refreshing average wind speed of 4.0 m/s (9 mph), mirroring the breezy conditions of August. As summer gives way to autumn, the winds begin to pick up slightly, setting the stage for the more pronounced gusts of October, which sees an increase to 5.0 m/s (11 mph). Notably, this uptick in wind speed reflects a broader trend observed throughout the year; after a lull in June and July, where winds dipped to their calmest at 2.9 m/s (6 mph), September signifies a return to characteristically brisk conditions. As the days grow cooler, the winds invigorate the air, ushering in the vibrant colors and crisp atmosphere that define the season.

Average September Wind Speed in Narva

The chart displays monthly wind speed patterns in Narva, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.43.54.43.93.62.93.04.14.0 m/s5.04.84.2
Data source: Narva September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Narva Compares to Other Months

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

In September, the weather is mild and variable, with temperatures ranging from a minimum of 2°C (36°F) to a pleasant maximum of 26°C (79°F), and an average of 12°C (55°F). The month experiences around 77 mm (3.0 in) of rainfall over approximately 14 days, coupled with a high humidity level of 90%. In contrast, January brings much harsher conditions, with temperatures plummeting to a minimum of -18°C (-1°F) and a maximum of 7°C (46°F), averaging -3°C (27°F). While January sees less precipitation, with 44 mm (1.7 in) over 12 days, the humidity is even higher at 97%. For more detailed insights, you can check Narva weather in January.

September and February present striking contrasts in weather. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 26°C (79°F), with an average of 12°C (55°F), creating a mild and often pleasant climate. The month experiences higher rainfall, accumulating to 77 mm (3.0 in) over 14 days, and a humidity level of 90%. In contrast, February is much harsher, with temperatures plunging from a minimum of -25°C (-13°F) to a maximum of 7°C (46°F) and averaging around -3°C (26°F). Precipitation is lower at 52 mm (2.1 in) across 13 days, while humidity edges up to 94%. This shift from the warmth of early autumn to the biting chill of mid-winter can dramatically affect outdoor activities and lifestyle. For more detailed insights, visit Narva weather in February.

September and March present contrasting weather conditions, highlighting the transition between seasons. In September, temperatures range from a mild minimum of 2°C (36°F) to a warm maximum of 26°C (79°F), with an average of 12°C (55°F). This month experiences a significant amount of precipitation at 77 mm (3.0 in) over 14 days, accompanied by high humidity at 90%. In contrast, March is far colder, with temperatures ranging from a bitter minimum of -21°C (-6°F) to a maximum of 11°C (53°F), averaging around -1°C (31°F). Precipitation is lower, at 54 mm (2.1 in), but it still occurs on 14 days, while humidity remains high at 90%. The dramatic differences in temperature and seasonal contexts make September feel much more inviting compared to the harsh chill of March. For more details about the weather in March, you can visit Narva weather in March.

When comparing the weather in September and April, notable differences emerge. September boasts a milder average temperature of 12°C (55°F) with highs reaching 26°C (79°F), while April has a lower average of 4°C (40°F) and maximums climbing to 24°C (75°F). Precipitation is slightly higher in September, totaling 77 mm (3.0 in) over 14 days, compared to April's 50 mm (2.0 in) over 11 days. Humidity levels are also marginally higher in September at 90%, while April hovers around 86%. For more specifics about the weather in April, you can check Narva weather in April.

In comparing the weather of September and May, September typically experiences a wider temperature range, with minimums around 2°C (36°F) and maximums reaching up to 26°C (79°F), providing a pleasant average of 12°C (55°F). In contrast, May has slightly cooler minimum temperatures, dropping to -3°C (27°F), yet it can match September's highest temperatures at 27°C (81°F) on average, revealing a more stable but lower average temperature of 10°C (51°F). Additionally, September sees more rainfall, with 77 mm (3.0 in) over 14 days compared to May's 65 mm (2.6 in) spread over 10 days, leading to a higher humidity levels of 90% in September versus 71% in May. For a closer look at May weather specifics, check Narva weather in May.

In comparing the weather between September and June, it's evident that June tends to be warmer and sunnier. June's average temperature reaches 17°C (62°F) with maximums of up to 33°C (92°F), while September's average is significantly cooler at 12°C (55°F), peaking at 26°C (79°F). Additionally, June experiences less rainfall, with 56 mm (2.2 in) over about 10 days, compared to September's 77 mm (3.0 in) spread over 14 days, making it a notably wetter month. Humidity levels are also higher in September, averaging 90%, compared to 77% in June. For a closer look at June's conditions, you can refer to Narva weather in June.

When comparing the weather in September and July, September tends to have cooler temperatures overall, with a minimum of 2°C (36°F) and an average of 12°C (55°F) compared to July's minimum of 7°C (45°F) and average of 18°C (65°F). July is marked by hotter conditions, reaching a maximum of 33°C (91°F), while September's maximum is 26°C (79°F). Both months experience similar precipitation levels, with September receiving 77 mm (3.0 in) over 14 days and July recording 75 mm (3.0 in) over 12 days. In addition, September exhibits higher humidity at 90%, compared to July's 82%. For a more comprehensive look at July weather patterns, check out Narva weather in July.

September weather displays a notable shift from August, with average temperatures dropping from 17°C (62°F) to 12°C (55°F). While August enjoys warmer conditions with maximum temperatures reaching 30°C (86°F), September's highs cap at 26°C (79°F), accompanied by cooler minimum temperatures of 2°C (36°F) compared to August's 7°C (45°F). Additionally, September experiences slightly less overall precipitation at 77 mm (3.0 in) over 14 days, compared to August's 99 mm (3.9 in) over 16 days, though humidity remains high in both months—with September at 90% and August at 86%. For a detailed look at August weather in Narva, you can check Narva weather in August.

September and October present a notable shift in weather patterns. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 26°C (79°F), with an average of 12°C (55°F) and 77 mm (3.0 in) of precipitation occurring over 14 days. The humidity is relatively high at 90%, providing a humid, late-summer feel.

In contrast, October brings cooler temperatures, with a minimum of -5°C (24°F) and an average of 7°C (45°F), peaking at 19°C (66°F). The month sees a slight increase in precipitation at 79 mm (3.1 in) spread over 17 days, along with a marginally higher humidity of 93%. This transition signals the onset of autumn, making October distinctly chillier and wetter than September. For a detailed look at October weather, visit Narva weather in October.

In September, the weather is generally milder, with temperatures ranging from a minimum of 2°C (36°F) to a comfortable maximum of 26°C (79°F), averaging around 12°C (55°F). The month sees 77 mm (3.0 in) of precipitation over 14 days and maintains a relatively high humidity level of 90%. In contrast, November brings much colder temperatures, with a minimum dipping to -9°C (16°F) and a maximum reaching just 11°C (53°F), leading to an average of 3°C (38°F). Although precipitation is less at 58 mm (2.3 in) over 13 days, the humidity rises slightly to 93%. For more details on the November weather specifics, check out Narva weather in November.

September and December present strikingly different weather conditions. In September, temperatures range from a mild 2°C (36°F) at night to a comfortable 26°C (79°F) during the day, accompanied by an average of 77 mm of precipitation over 14 days and a humidity level of about 90%. In contrast, December plunges into a much colder climate, with temperatures dropping to a frigid minimum of -23°C (-9°F) and only peaking at 7°C (45°F), while experiencing similar precipitation levels of 70 mm across 16 days. The humidity only slightly increases to 94%, adding to the overall chill. For more detailed weather insights, check Narva weather in December.

Compare Narva's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Narva

As September rolls in, Narva experiences a distinct transition from the warmth of summer to the coolness of autumn. The average temperature dips, making it notably cooler than previous months, while still reaching pleasant highs on some days. Alongside this shift, September sees an uptick in rainfall, with several days of precipitation contributing to the month’s humid atmosphere. The blend of mild temperatures and increased moisture creates a unique charm for those visiting or residing in Narva during this time. For more detailed insights into how this month compares to others, visit Narva Climate.