Weather in Pärnu for September 2025
In general, the average temperature in Pärnu at the beginning of September is 20.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.9 °C by the end of September.
With an average of 5 rainy days, Pärnu experiences minimal rainfall in September.
Temperatures
Rain 🌧️
Pärnu Weather September
Temperatures trend during September in Pärnu
September weather in Pärnu day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 18° /13° | 7.9 mm | 4 | |
| 2 Sept. |  Moderate or heavy rain shower | 18° /12° | 15.1 mm | 4 | |
| 3 Sept. | Moderate rain at times | 21° /13° | 1.8 mm | 5 | |
| 4 Sept. |  Partly cloudy | 22° /14° | 0 mm | 6 | |
| 5 Sept. | Partly cloudy | 22° /15° | 0 mm | 6 | |
| 6 Sept. | Partly cloudy | 21° /11° | 0 mm | 6 | |
| 7 Sept. |  Sunny | 21° /11° | 0 mm | 6 | |
| 8 Sept. |  Cloudy | 21° /13° | 0 mm | 5 | |
| 9 Sept. |  Mist | 22° /13° | 0 mm | 6 | |
| 10 Sept. | Partly cloudy | 19° /14° | 1.4 mm | 5 | |
| 11 Sept. | Mist | 20° /14° | 2.7 mm | 5 | |
| 12 Sept. |  Overcast | 20° /13° | 0 mm | 5 | |
| 13 Sept. | Mist | 19° /14° | 11.3 mm | 4 | |
| 14 Sept. | Overcast | 19° /12° | 5.3 mm | 5 | |
| 15 Sept. | Partly cloudy | 17° /11° | 0.1 mm | 5 | |
| 16 Sept. | Partly cloudy | 20° /12° | 0 mm | 6 | |
| 17 Sept. | Patchy rain possible | 19° /10° | 0.1 mm | 5 | |
| 18 Sept. | Sunny | 19° /9° | 0 mm | 5 | |
| 19 Sept. | Light rain shower | 20° /10° | 2.3 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /12° | 1.4 mm | 5 | |
| 21 Sept. | Cloudy | 19° /12° | 0 mm | 4 | |
| 22 Sept. | Sunny | 19° /10° | 0 mm | 5 | |
| 23 Sept. | Light rain shower | 18° /10° | 1.8 mm | 4 | |
| 24 Sept. | Patchy rain possible | 17° /11° | 0.3 mm | 5 | |
| 25 Sept. | Overcast | 16° /12° | 0.3 mm | 4 | |
| 26 Sept. | Sunny | 16° /12° | 1.7 mm | 5 | |
| 27 Sept. | Overcast | 17° /12° | 10.2 mm | 4 | |
| 28 Sept. | Mist | 17° /12° | 2.7 mm | 4 | |
| 29 Sept. | Partly cloudy | 14° /10° | 4.1 mm | 4 | |
| 30 Sept. | Light rain shower | 14° /9° | 1.4 mm | 4 | |
| Next | |||||
Guide for Pärnu in September
In Pärnu, Estonia, September marks the transition from summer to autumn, bringing about noticeable changes in the weather. At the beginning of the month, Pärnu experiences mild and pleasant temperatures, with an average high of 17° and a low of 10°.
The weather is generally comfortable for outdoor activities, with a mix of sunny and cloudy days. Light to moderate rainfall can be expected, so it's advisable to pack an umbrella or raincoat when exploring the city.
As the month progresses towards the end of September, the weather in Pärnu gradually cools down. The average high temperature decreases to around 13°, and the low temperature drops to 7°. The days become shorter, and there is a higher chance of overcast skies and occasional showers.
Visitors should be prepared for cooler conditions and may want to layer clothing to stay comfortable while sightseeing or enjoying outdoor attractions.
Overall, September in Pärnu offers a pleasant transition from summer to autumn, allowing travelers to experience the city's charm amidst changing weather patterns.
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Pärnu in September - FAQ
September rainfall patterns in Pärnu
UV exposure in Pärnu during September
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Where is Pärnu?Get accurate weather forecasts for Pärnu, located at latitude 58.386 and longitude 24.497. Stay updated with localized weather information tailored for Pärnu.