Bolu
September
Weather in Bolu for September 2025
Your guide to Bolu weather in September - trends and predictions
In general, the average temperature in Bolu at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 24 °C by the end of September.
Expect significant rainfall in Bolu during September, with an average of 16 rainy days.
Is September a good time to visit Bolu? check out the best time to travel to Bolu page.
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Temperatures
Rain 🌧️
More
14
Dry days
16
Rainy days
0
Snow days
24°/10°
Temperatures
11 km/h
Avg max wind
70 %
Avg humidity
Bolu in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  24° | 3  24° | 4  26° | 5  25° | 6 25° | 7 25° |
| 8  24° | 9 26° | 10 30° | 11 28° | 12 27° | 13 30° | 14 29° |
| 15 27° | 16 18° | 17 22° | 18 22° | 19 20° | 20 19° | 21 20° |
| 22 15° | 23  14° | 24 21° | 25 23° | 26 24° | 27 27° | 28 30° |
| 29 28° | 30 15° |
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Temperatures trend during September in Bolu
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. | Patchy light rain with thunder | 25° /11° | 12.7 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 24° /14° | 12.2 mm | 5 | |
| 3 Sept. | Patchy rain possible | 24° /11° | 6.5 mm | 5 | |
| 4 Sept. | Partly cloudy | 26° /10° | 0 mm | 7 | |
| 5 Sept. | Sunny | 25° /9° | 0 mm | 7 | |
| 6 Sept. | Sunny | 25° /9° | 0 mm | 7 | |
| 7 Sept. | Patchy rain possible | 25° /11° | 0.1 mm | 6 | |
| 8 Sept. | Thundery outbreaks possible | 24° /10° | 1 mm | 5 | |
| 9 Sept. | Patchy rain possible | 26° /12° | 0.4 mm | 6 | |
| 10 Sept. | Sunny | 30° /13° | 0 mm | 7 | |
| 11 Sept. | Patchy rain possible | 28° /12° | 0.9 mm | 6 | |
| 12 Sept. | Patchy rain possible | 27° /14° | 2.4 mm | 6 | |
| 13 Sept. | Sunny | 30° /15° | 0 mm | 7 | |
| 14 Sept. | Sunny | 29° /14° | 0 mm | 7 | |
| 15 Sept. | Patchy rain possible | 27° /12° | 3.3 mm | 6 | |
| 16 Sept. | Light rain shower | 18° /10° | 3.4 mm | 4 | |
| 17 Sept. | Patchy rain possible | 22° /11° | 0.1 mm | 5 | |
| 18 Sept. | Light rain shower | 22° /9° | 4.1 mm | 5 | |
| 19 Sept. | Light rain shower | 20° /7° | 3.4 mm | 5 | |
| 20 Sept. | Patchy light rain with thunder | 19° /7° | 2.1 mm | 4 | |
| 21 Sept. | Patchy light rain with thunder | 20° /8° | 6.4 mm | 5 | |
| 22 Sept. | Light rain shower | 15° /5° | 2.8 mm | 4 | |
| 23 Sept. | Light rain | 14° /4° | 6.7 mm | 3 | |
| 24 Sept. | Sunny | 21° /4° | 0 mm | 6 | |
| 25 Sept. | Sunny | 23° /8° | 0 mm | 6 | |
| 26 Sept. | Sunny | 24° /13° | 0 mm | 6 | |
| 27 Sept. | Sunny | 27° /14° | 0 mm | 7 | |
| 28 Sept. | Sunny | 30° /14° | 0 mm | 8 | |
| 29 Sept. | Sunny | 28° /11° | 0 mm | 7 | |
| 30 Sept. | Moderate or heavy rain shower | 15° /4° | 28.9 mm | 4 | |
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Important Notice
Our weather forecast for Bolu 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 Bolu forecast closer to your planned date for the most up-to-date weather information.
Bolu in September - FAQ
What are the expected maximum and minimum temperatures in Bolu during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bolu during September?
Moderate rainfall is anticipated in Bolu during September, with a total of 97.5 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Bolu during September?
The average wind speed in Bolu during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Bolu in September?
As you prepare for your trip to Bolu 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 Bolu, 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
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- 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 Bolu
Explore the daily rainfall trends and prepare for Bolus September weather 💧
UV exposure in Bolu during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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