Last updated: August 21, 2025
Experience the September weather in Tuusula, Finland, where autumn begins to unfold with a captivating mix of warmth and chill. Daytime temperatures can reach a pleasant 24°C (75°F), while the average hovers around a cool 11°C (53°F), perfect for enjoying the outdoors. As the nights draw in, expect temperatures to dip to a brisk -2°C (28°F). Rainfall is present, with 66 mm (2.6 in) spread across approximately 12 days, contributing to a cozy ambiance heightened by 90% humidity. September in Tuusula is a blend of nature's beauty and a hint of winter's approach, making it a unique time to explore this charming Finnish locale.
In Tuusula, Finland, September marks the transition from summer warmth to the crispness of autumn. As the month progresses, temperatures showcase a delightful range, beginning with a mild minimum of -2°C (28°F) and peaking at a pleasant 24°C (75°F). The average temperature settles around 11°C (53°F), offering a taste of the cooler days to come. This month's climate embodies a gentle decline from the warmer August days, encouraging residents and visitors alike to embrace outdoor activities amidst the stunning fall foliage. The cooler nights hint at the colder months ahead, making September a month of beautiful change in Tuusula.
September in Tuusula, Finland, brings a noticeable shift as precipitation levels rise to 66 mm (2.6 in), marking a distinct increase from the drier summer months. This month typically experiences about 12 days of rain, maintaining the trend of consistent precipitation seen since June. The arrival of autumn is evident as temperatures drop and the landscape transforms, resulting in a refreshing but wet start to the season. With September's rainfall following the high of 82 mm (3.2 in) in July and 75 mm (3.0 in) in August, it serves as a prelude to the wetter months ahead, particularly as October looms with an expected 81 mm (3.2 in) of rain. This transition highlights a gradual increase in both precipitation amounts and rainy days, emphasizing the shift from summer's warmth to autumn's chill in Tuusula.
In September, Tuusula, Finland, experiences a notable shift in humidity as it hovers around 90%. This increase marks a transition from the relatively comfortable summer months, where humidity dipped to 75% in May and June, to more humid conditions reminiscent of the deep winter months, which consistently exceed 90% from January through April. The pattern indicates a gradual buildup of moisture in the air as autumn approaches, making September quite humid compared to its immediate predecessors in July and August. This culminates in a comforting, if damp, atmosphere that hints at the coming chill of fall, bridging the gap between the vibrant summer and the frosty winter months ahead.
As summer winds down in September, Tuusula experiences a noticeable shift in its UV Index, dipping to a moderate level of 4. This indicates that while the sun is still shining brightly, the risk of harm from unprotected sun exposure increases, with a burn time of about 30 minutes for fair-skinned individuals. The preceding months of June and July saw a peak UV Index of 7, characterized by high risk, while August eased into a moderate UV Index of 5. As we transition into autumn, it's essential to stay sun-smart and consider protective measures when enjoying the outdoors. For more details on UV exposure and trends throughout the year, visit Tuusula UV Index.
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As the summer warmth begins to wane, September in Tuusula, Finland, graces the landscape with a delightful 290 hours of sunshine, marking a gentle transition into autumn. This month captures the tail end of the sun-soaked season, showcasing a rich tapestry of colors and vibrant landscapes. After basking in the peak of sunlight during June and July, which recorded nearly 500 hours, September still holds its own, standing comfortably against the cooler months that follow. The steady decline in daylight from the summer highs contrasts sharply with the brisk resurgence of sunshine in earlier months, signaling the embrace of crisp autumn days. As the days grow shorter, Tuusula bids farewell to summer while still delighting in the golden glow of September’s sun.
In Tuusula, Finland, the likelihood of enjoying sunny weather sees a gradual rise as spring transitions into summer, peaking in July with a robust 56% chance of sunshine. As the summer wanes into August, this sunny disposition begins to decline, dropping to 26%. By September, the chance of sun stabilizes slightly higher at 27%, reflecting the onset of autumn while still holding onto remnants of summer warmth. This pattern underscores the seasonality of Tuusula's climate, where the brighter days of summer give way to the cooler, cloudier times of fall, reminding residents and visitors alike to cherish those fleeting sunny moments.
As autumn approaches in Tuusula, Finland, September marks a subtle transition from the long, sun-drenched days of summer to the shorter daylight hours of fall. With 12 hours of daylight, September maintains a healthy balance, yet it signals the gradual decline seen as the month of August, boasting 15 hours of daylight, gives way to the deeper shadows of October, which offers just 10 hours. This month serves as a bridge, showcasing the 18 hours of brightness in July and June, before dipping into the coziness of the impending autumn months. Overall, September’s daylight duration exemplifies the harmony of change, inviting both the vibrant hues of late summer and the crisp beginnings of fall.
As summer fades into autumn, September in Tuusula, Finland, greets residents with a gentle breeze, averaging 3.4 m/s (approximately 8 mph). This marks a subtle shift from the slightly warmer gusts of August, which saw an average wind speed of 3.7 m/s. The wind begins to pick up slightly as October approaches, foreshadowing the more invigorating conditions with speeds reaching 4.3 m/s (10 mph). Throughout the year, wind speeds in Tuusula tend to fluctuate, with the calmest months being June and July, while March and October often bring more robust winds. This dynamic pattern underscores the region's transition from the milder summer months to the brisk, gusty evenings of autumn, inviting both locals and visitors to embrace the refreshing change in the air.
Weather in Tuusula varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tuusula, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. September typically enjoys milder temperatures, with daily averages around 11°C (53°F), peaking at highs of 24°C (75°F). In contrast, January is significantly colder, featuring an average temperature of -3°C (26°F) and maximums only reaching 8°C (47°F). Precipitation levels are similar in both months, with September receiving 66 mm (2.6 in) over approximately 12 days, while January has slightly less at 52 mm (2.1 in) over 11 days. Additionally, humidity levels are higher in January at 97%, compared to September’s 90%, which adds to the chill of winter. For more details on January weather, check out Tuusula weather in January.
In September, temperatures in Tuusula range from a chilly -2°C (28°F) at night to a comfortable maximum of 24°C (75°F) during the day, with an average of 11°C (53°F). The month experiences relatively high humidity at 90% and sees about 66 mm (2.6 in) of precipitation over approximately 12 days. In contrast, February is significantly colder, with temperatures plunging to a minimum of -25°C (-13°F) and an average of -4°C (25°F), only reaching a maximum of 7°C (45°F). Although February has lower total precipitation at 46 mm (1.8 in) over 9 days, humidity is slightly higher at 95%. For more detailed information, you can check Tuusula weather in February.
September and March present quite a contrast in weather conditions. In September, temperatures range from a minimum of -2°C (28°F) to a pleasant maximum of 24°C (75°F), with an average of 11°C (53°F). The month sees about 66 mm (2.6 in) of precipitation over 12 days, accompanied by a humidity level of 90%. Conversely, March is significantly colder, with temperatures dipping as low as -24°C (-12°F) and only reaching a maximum of 11°C (53°F). The average temperature hovers around -1°C (30°F), and while it receives slightly less precipitation at 49 mm (1.9 in) over the same number of days, the humidity is a bit higher at 93%. For more specific details on March weather, you can check Tuusula weather in March.
In comparing the weather between September and April, we see notable differences in temperature and precipitation. September boasts a milder range with minimum temperatures around -2°C (28°F) and an average of 11°C (53°F), reaching a maximum of 24°C (75°F). In contrast, April experiences colder conditions, with temperatures dropping as low as -16°C (3°F) and an average of only 4°C (39°F), peaking at 21°C (70°F). While September receives more precipitation at 66 mm (2.6 in) over 12 days, April has slightly less at 46 mm (1.8 in) over 10 days. Humidity levels are also fairly high in both months, with September at 90% and April at 86%. For more detailed information about April weather, you can visit Tuusula weather in April.
When comparing the weather between September and May, some notable differences emerge. September typically experiences a wider temperature range, with minimums around -2°C (28°F) and maximums reaching 24°C (75°F), resulting in an average of 11°C (53°F). In contrast, May has slightly cooler minimum temperatures at -5°C (24°F) and can peak at 29°C (84°F), averaging 10°C (51°F). Precipitation in September is more frequent, occurring over 12 days with a total of 66 mm (2.6 in), while May sees less rain—about 55 mm (2.2 in) over 10 days. Humidity levels also differ, with September at a high 90%, compared to May's more comfortable 75%. For detailed information about May's weather, you can check Tuusula weather in May.
In comparing the weather of September and June, we see notable differences in temperature and humidity. September experiences a broader temperature range, with minimums dipping to -2°C (28°F) and maximums reaching 24°C (75°F), accompanied by an average of 11°C (53°F). In contrast, June typically enjoys warmer conditions, with minimums at 2°C (36°F), averages of 16°C (62°F), and highs peaking at 31°C (87°F). While both months see some rainfall, September has slightly more precipitation at 66 mm (2.6 in) over 12 days compared to June's 61 mm (2.4 in) across 10 days. Additionally, September is significantly more humid with a humidity level of 90%, compared to June's 75%. For a closer look at June's weather specifics, you can visit Tuusula weather in June.
In comparing the weather of September and July, notable differences emerge in temperature and precipitation levels. September experiences a much cooler range, with average temperatures peaking at 24°C (75°F) and dipping to a minimum of -2°C (28°F), while July boasts a warmer average, seeing temperatures ranging from 7°C (44°F) to a high of 32°C (89°F). Both months experience rainfall on approximately 12 days, but September receives less precipitation overall at 66 mm (2.6 in) compared to July's 82 mm (3.2 in). Additionally, humidity levels are slightly higher in September at 90%, compared to July’s 80%. For a more detailed look at July's climate, visit Tuusula weather in July.
In comparing the weather of September to August, it's clear that September experiences cooler temperatures, with a minimum of -2°C (28°F) and an average of 11°C (53°F), while August boasts milder conditions with a minimum of 6°C (43°F) and an average of 16°C (61°F). The maximum temperatures also reflect this shift, with September reaching only up to 24°C (75°F) compared to August's peak of 30°C (86°F). Additionally, September tends to be wetter, accumulating 66 mm (2.6 in) of precipitation over 12 days, just slightly less than August's 75 mm (3.0 in) but still similarly spread over the same number of days. Humidity levels are higher in September at 90%, compared to 83% in August, contributing to a somewhat more humid feel to the air as summer transitions into autumn. For a deeper look into August conditions, you can check Tuusula weather in August.
September's weather tends to be milder, with average temperatures around 11°C (53°F) and maximums reaching up to 24°C (75°F). However, it is also relatively humid, with 90% humidity and 66 mm (2.6 in) of precipitation over 12 days. In contrast, October brings cooler temperatures, with an average of 6°C (44°F) and highs of only 17°C (63°F). It is also wetter, with 81 mm (3.2 in) of precipitation spread across 16 days and an increase in humidity to 93%. For more details on the October weather, you can visit Tuusula weather in October.
September and November present contrasting weather patterns as the seasons shift. In September, temperatures range from a chilly -2°C (28°F) at night to a pleasant maximum of 24°C (75°F) during the day, with an average temperature of 11°C (53°F). The month sees about 66 mm (2.6 in) of precipitation over approximately 12 days, combined with high humidity at 90%.
In contrast, November experiences more frigid conditions, with a minimum temperature dropping to -9°C (16°F) and an average of just 2°C (37°F). The maximum temperature reaches a mild 12°C (54°F), with total precipitation slightly lower at 54 mm (2.1 in) across 10 days. Humidity also increases to 94%, adding to the chilly atmosphere. For those interested in the specifics of November weather, you can find more information here: Tuusula weather in November.
September and December present strikingly different weather patterns. In September, temperatures range from a minimum of -2°C (28°F) to a pleasant maximum of 24°C (75°F), with an average of 11°C (53°F). This month experiences moderate precipitation of 66 mm (2.6 in) over 12 days, and the humidity sits at 90%. In contrast, December brings much colder conditions, with temperatures dipping as low as -19°C (-3°F) and only reaching a maximum of 6°C (43°F), creating an average of -2°C (29°F). Precipitation slightly increases to 71 mm (2.8 in) over 14 days, and humidity rises to 95%. For more details, you can check Tuusula weather in December.
As September unfolds in Tuusula, it presents a captivating transition from the warmth of summer to the crispness of autumn. With temperatures dipping significantly compared to the peak summer months, residents experience a notable shift in weather dynamics. Although the month can still enjoy pleasantly warm days, the arrival of cooler evenings serves as a reminder of the upcoming winter. Rainfall also becomes more frequent, enhancing the lush and vibrant fall scenery, while the high humidity lingers in the air, adding a dramatic touch to the changing seasons. To explore more about what to expect throughout the year, be sure to check out Tuusula Climate.