Harjumaa (Tallinn)
September
Weather in Harjumaa for September 2025
Your guide to Harjumaa weather in September - trends and predictions
In general, the average temperature in Harjumaa at the beginning of September is 20.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.4 °C by the end of September.
The climate of Harjumaa in September is notably wet, with an average of 12 rainy days.
Is September a good time to visit Harjumaa? check out the best time to travel to Harjumaa page.
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18
Dry days
12
Rainy days
0
Snow days
19°/11°
Temperatures
19 km/h
Avg max wind
79 %
Avg humidity
Harjumaa in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  19° | 2  19° | 3 20° | 4  22° | 5  23° | 6  19° | 7  21° |
| 8  22° | 9 23° | 10 21° | 11 22° | 12 22° | 13 19° | 14 19° |
| 15 15° | 16 21° | 17 19° | 18 17° | 19  20° | 20  18° | 21 19° |
| 22 18° | 23 17° | 24 18° | 25 17° | 26 17° | 27 17° | 28 17° |
| 29 15° | 30 14° |
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Temperatures trend during September in Harjumaa
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 19° /11° | 2.6 mm | 5 | |
| 2 Sept. | Moderate or heavy rain with thunder | 19° /12° | 7.8 mm | 5 | |
| 3 Sept. | Light rain shower | 20° /12° | 1.8 mm | 5 | |
| 4 Sept. | Mist | 22° /13° | 0 mm | 6 | |
| 5 Sept. | Overcast | 23° /14° | 0 mm | 6 | |
| 6 Sept. | Sunny | 19° /11° | 0.1 mm | 6 | |
| 7 Sept. | Partly cloudy | 21° /11° | 0 mm | 6 | |
| 8 Sept. | Cloudy | 22° /12° | 0 mm | 6 | |
| 9 Sept. | Mist | 23° /12° | 0 mm | 6 | |
| 10 Sept. | Cloudy | 21° /13° | 0.8 mm | 5 | |
| 11 Sept. | Mist | 22° /13° | 2.5 mm | 5 | |
| 12 Sept. | Sunny | 22° /12° | 0.5 mm | 6 | |
| 13 Sept. | Mist | 19° /14° | 19.8 mm | 4 | |
| 14 Sept. | Overcast | 19° /12° | 6.6 mm | 5 | |
| 15 Sept. | Cloudy | 15° /11° | 1 mm | 4 | |
| 16 Sept. | Partly cloudy | 21° /11° | 0 mm | 6 | |
| 17 Sept. | Light rain shower | 19° /11° | 0.2 mm | 5 | |
| 18 Sept. | Overcast | 17° /9° | 0 mm | 4 | |
| 19 Sept. | Moderate rain | 20° /9° | 1.9 mm | 5 | |
| 20 Sept. | Light drizzle | 18° /12° | 0.9 mm | 5 | |
| 21 Sept. | Cloudy | 19° /11° | 0 mm | 5 | |
| 22 Sept. | Sunny | 18° /9° | 0 mm | 5 | |
| 23 Sept. | Light rain shower | 17° /9° | 3 mm | 4 | |
| 24 Sept. | Patchy light drizzle | 18° /10° | 0.4 mm | 5 | |
| 25 Sept. | Mist | 17° /11° | 0.6 mm | 4 | |
| 26 Sept. | Overcast | 17° /11° | 1.2 mm | 4 | |
| 27 Sept. | Light rain shower | 17° /11° | 7.1 mm | 4 | |
| 28 Sept. | Fog | 17° /11° | 2.2 mm | 4 | |
| 29 Sept. | Partly cloudy | 15° /9° | 1.3 mm | 4 | |
| 30 Sept. | Moderate or heavy rain with thunder | 14° /8° | 4.3 mm | 3 | |
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Important Notice
Our weather forecast for Harjumaa in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Harjumaa forecast closer to your planned date for the most up-to-date weather information.
Harjumaa in September - FAQ
What are the expected maximum and minimum temperatures in Harjumaa during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Harjumaa during September?
Moderate rainfall is anticipated in Harjumaa during September, with a total of 71.5 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Harjumaa during September?
The average wind speed in Harjumaa during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Harjumaa in September?
As you prepare for your trip to Harjumaa in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Harjumaa, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Harjumaa
Explore the daily rainfall trends and prepare for Harjumaas September weather 💧
UV exposure in Harjumaa during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Harjumaa?Get accurate weather forecasts for Harjumaa, located at latitude 59.437 and longitude 24.754. Stay updated with localized weather information tailored for Harjumaa.
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