Last updated: August 21, 2025
Experience the dynamic September weather in Tartu, Estonia, where temperatures oscillate between a maximum of 26°C (78°F) and a refreshing minimum of 0°C (32°F). On average, the month enjoys a mild 13°C (55°F), perfect for exploring the city's rich culture and stunning landscapes. Expect a bit of rain, with 62 mm (2.4 in) of precipitation spread across 11 days, contributing to the lush surroundings. The air is notably humid, averaging around 89%, lending a crisp freshness to the autumn air. Embrace the transition of seasons with Tartu's delightful September climate!
In September, Tartu experiences a refreshing transition as summer gracefully yields to autumn. The temperatures range from a chilly 0°C (32°F) at night to a pleasant max of 26°C (78°F) during the day, allowing for comfortable outdoor activities and exploration. With an average temperature of 13°C (55°F), residents and visitors alike can enjoy the vibrant fall foliage as it begins to paint the city in warm hues. Compared to the sweltering heights of summer months, September offers a delightful balance, making it an ideal time to experience Tartu's rich culture and scenic beauty before the cooler weather sets in.
In September, Tartu, Estonia, experiences an average precipitation of 62 mm (2.4 in) over approximately 11 days, marking a notable transition as summer wanes and autumn takes hold. This month typically sees a dip in rainfall compared to the 79 mm (3.1 in) recorded in August, hinting at a gradual shift towards drier conditions. Interestingly, September's precipitation levels align more closely with the rainfall in June and July, which both stood at 65 mm, while the number of precipitation days remains moderate, reflecting a balance between the lingering warmth of summer and the incoming chill of fall. Overall, as September unfolds, Tartu exhibits a blend of moisture and mild weather, setting the tone for the cooler months ahead.
In Tartu, Estonia, September ushers in a refreshing shift as humidity levels settle at 89%. This marks a slight rise from August's 84%, as the summer warmth begins to wane and autumn approaches. Throughout the year, Tartu experiences high humidity, especially in the winter months, peaking at a robust 95% in January. Interestingly, there’s a gradual decline during the spring, reaching its lowest in May at 73%, before stabilizing again in late summer and early fall. As September turns to October, the humidity slightly creeps up to 92%, indicating the return of those cooler, damp days typical of Estonian weather. Overall, September's humidity reflects a blend of summer's lingering warmth and the encroaching coolness of autumn, creating a transitional yet comfortable atmosphere in Tartu.
As September rolls into Tartu, Estonia, the UV Index dips to 4, indicating a moderate level of sun exposure that's a welcome change from the heightened levels of summer. With a recommended burn time of 30 minutes, outdoor enthusiasts should still take precautions while enjoying the early autumn sun. This month follows a trend of increasing UV levels from the cold winter months, where January and February saw a mere 1 and 2, respectively. However, the summer months brought a spike, hitting 7 in both June and July. While September may not be as intense as the peak summer days, it still signals the importance of sun safety as the days slowly shorten. For more detailed insights on the UV Index throughout the year, check out Tartu UV Index.
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In September, Tartu, Estonia, basks in a delightful 295 hours of sunshine, marking a transitional phase as summer gives way to autumn. This month showcases a notable decline from the sun-soaked heights of July and June, yet it also stands as a bright beacon compared to the dimmer days that follow in October and November. September's warm, golden light lingers just enough to extend the outdoor experiences of the warmer months, inviting residents and visitors alike to enjoy the slowly changing hues of the landscape. As daylight wanes and prepares to retreat into the longer nights of winter, September serves as a gentle reminder of the summer's glow, balancing warmth with the crispness of an approaching autumn.
In Tartu, Estonia, the likelihood of sunny weather sees a gradual rise as spring rolls in, peaking during the summer months of June and July with a robust 56% chance of sunshine. However, as autumn approaches, particularly in September, this sunny disposition takes a dip, with only a 22% chance of clear skies. This trend hints at the transitional nature of September; while it retains some summer warmth, the encroaching chill of autumn clouds the chances for sun. Thus, while sunny days can still punctuate the early fall, they become less predictable, ushering in a shift towards cooler, cloudier weather.
As summer fades into autumn, September in Tartu, Estonia, witnesses a gentle decline in daylight, offering about 12 hours of sunshine. This marks a noticeable shift from the longer days of July and August, where daylight peaked at 17 and 15 hours, respectively. The transition signals a gradual retreat into the darker months ahead, echoing the seasonal rhythm that sees daylight dwindling to just 6 hours by December. Throughout the year, Tartu’s daylight duration reflects a beautiful progression, from the 7 hours of January's early winter to the vibrant 18 hours of June's midsummer, inviting locals and visitors alike to savor the fleeting warmth of autumn before the serene stillness of winter sets in.
In September, Tartu enjoys a gentle breeze with an average wind speed of 4.4 m/s (10 mph), mirroring the conditions of August. This consistency in wind speed suggests a smooth transition into the autumn months, as the city bids farewell to summer. The arrival of October marks a notable increase, with winds picking up to 5.2 m/s (12 mph), ushering in the crispness of fall. Observing the trends from earlier in the year, there's a gradual rise from a calmer summer to a brisk autumn, creating a refreshing atmosphere that invigorates the beautiful city of Tartu.
Weather in Tartu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tartu, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present quite contrasting weather conditions. In September, temperatures range from a chilly 0°C (32°F) at night to a pleasant 26°C (78°F) during the day, with an average of 13°C (55°F). Humidity is relatively high at 89%, and the month sees about 62 mm (2.4 in) of precipitation over roughly 11 days. In stark contrast, January experiences much colder temperatures, with a minimum of -20°C (-4°F) and a maximum of only 8°C (47°F), averaging -2°C (28°F). Although it is slightly less rainy, with 38 mm (1.5 in) over 10 days, the humidity rises to 95%, making the cold feel even more bitter. For more details on January conditions, visit Tartu weather in January.
In September, the weather is considerably milder, with temperatures ranging from a low of 0°C (32°F) to a pleasant high of 26°C (78°F) and an average of 13°C (55°F). The month sees about 62 mm (2.4 in) of rainfall over approximately 11 days, coupled with a humidity level of 89%. In contrast, February experiences a stark chill, with temperatures plummeting to a minimum of -24°C (-12°F) and only reaching a maximum of 9°C (48°F), resulting in an average of -3°C (27°F). February also has a lower precipitation level of 42 mm (1.7 in) spread over 10 days, but the humidity is slightly higher at 93%. For more detailed information, you can check Tartu weather in February.
September and March exhibit contrasting weather conditions. September boasts a milder temperature range with minimums around 0°C (32°F) and maximums peaking at 26°C (78°F), leading to an average of 13°C (55°F). This month sees a total precipitation of 62 mm (2.4 in) over 11 days, alongside a high humidity level of 89%. In contrast, March experiences significantly colder temperatures, with minimums diving to -23°C (-8°F) and an average temperature of just 0°C (32°F), while maximum temperatures only reach 13°C (55°F). The precipitation in March is slightly lower at 45 mm (1.8 in) over 12 days, with humidity almost matching September’s at 90%. For more details on the specifics of March weather, you can refer to Tartu weather in March.
In comparing the weather in September and April, we observe notable differences in temperature and precipitation. September boasts a milder average temperature of 13°C (55°F), with maximums reaching up to 26°C (78°F), while April’s average temperature is cooler at 5°C (41°F), peaking at 23°C (73°F). Although September is generally warmer, it experiences slightly more precipitation, with 62 mm (2.4 in) over 11 days, compared to April's 49 mm (1.9 in) over 12 days. Humidity levels are comparable in both months, hovering around 89% in September and 87% in April, creating a lush atmosphere as summer transitions into autumn. For a closer look at April weather specifics, you can visit Tartu weather in April.
In September, temperatures in Tartu range from a chilly 0°C (32°F) at night to a warm 26°C (78°F) during the day, with an average temperature of 13°C (55°F). The month sees about 62 mm (2.4 in) of precipitation spread over 11 days, accompanied by high humidity levels of 89%. In contrast, May brings slightly cooler mornings with temperatures dropping to a minimum of -3°C (26°F), but it can warm up to 27°C (81°F) in the afternoons, averaging at 11°C (52°F). May experiences slightly less precipitation at 56 mm (2.2 in) over the same number of rainy days, with a markedly lower humidity level of 73%. For more detailed weather insights, you can check Tartu weather in May.
September and June present quite contrasting weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 26°C (78°F), with an average of 13°C (55°F). The month sees around 62 mm (2.4 in) of precipitation over approximately 11 days and high humidity levels averaging 89%. In contrast, June tends to be warmer, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 32°C (89°F), averaging 17°C (63°F). The precipitation is slightly higher at 65 mm (2.6 in), spread over about 10 days, but the humidity is lower, averaging around 77%. For more details on June weather, you can visit Tartu weather in June.
In comparing the weather between September and July, significant differences emerge. July enjoys warmer temperatures, with a minimum of 6°C (43°F) and an average of 18°C (65°F), peaking at 32°C (89°F). In contrast, September sees cooler conditions, featuring a minimum of 0°C (32°F) and an average of 13°C (55°F), with a maximum of 26°C (78°F). Humidity levels also vary, with July having a relatively lower humidity of 80% compared to September's higher 89%. Both months experience similar levels of precipitation, with September receiving 62 mm (2.4 in) over 11 days and July recording 65 mm (2.6 in) across 13 days. For more details about July weather, visit Tartu weather in July.
In comparing the weather of September to August, September exhibits a marked drop in temperatures, with a minimum of 0°C (32°F) compared to August's warmer minimum of 7°C (45°F). The average temperature also decreases from 17°C (62°F) in August to just 13°C (55°F) in September. August experiences higher maximum temperatures, peaking at 31°C (87°F), while September's maximum reaches only 26°C (78°F). Additionally, September has slightly lower total precipitation, at 62 mm (2.4 in) over 11 days, compared to 79 mm (3.1 in) over 14 days in August. Despite the slight decrease in the number of rainy days, September's humidity is higher at 89%, compared to 84% in August. For a more detailed look at August weather, check out Tartu weather in August.
September and October show a notable shift in weather conditions. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 26°C (78°F), with an average of 13°C (55°F), while October sees cooler temperatures, with a minimum of -4°C (26°F) and a maximum of 19°C (66°F), averaging just 7°C (46°F). Precipitation increases slightly from September to October, rising from 62 mm (2.4 in) over 11 days to 72 mm (2.9 in) over 14 days. Additionally, October tends to be more humid, with levels reaching 92% compared to September's 89%. For a more detailed look at weather specifics in October, visit Tartu weather in October.
September and November present distinctly different weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a comfortable maximum of 26°C (78°F), averaging around 13°C (55°F). This month experiences about 62 mm (2.4 in) of precipitation over 11 days, with humidity levels at 89%. Conversely, November sees a notable drop in temperature, with lows of -10°C (15°F) and highs reaching only 12°C (54°F), averaging just 3°C (38°F). Precipitation decreases slightly to 54 mm (2.1 in) over 10 days, accompanied by a higher humidity of 93%. For more details on what to expect from the weather in November, check out Tartu weather in November.
September and December present stark differences in weather patterns. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 26°C (78°F), providing a mild average of 13°C (55°F). The month experiences approximately 62 mm (2.4 in) of precipitation over 11 days, with a relatively high humidity of 89%. In contrast, December sees significantly colder temperatures, with a minimum of -21°C (-5°F), an average of -1°C (30°F), and a maximum of just 8°C (48°F). While it has slightly lower precipitation at 54 mm (2.1 in) over 13 days, the humidity remains high at 93%. The chill of December is a stark reminder of winter's arrival compared to the temperate autumn of September. For more detailed information, visit Tartu weather in December.
As September unfolds in Tartu, it marks a transition from the warmth of summer to the crispness of autumn. The days are still pleasantly warm with occasional highs, yet the nights cool down significantly, inviting cozy layers. With average humidity lingering around 89%, the air can feel quite damp, accentuating the feeling of autumn's approach. While the month sees a fair share of rainfall—averaging about 62 mm over 11 days—the beauty of the changing leaves against the backdrop of cooler weather makes this month uniquely enchanting. For a deeper understanding of what to expect throughout the year, check out the detailed insights in Tartu Climate.