Bolu
September
Weather in Bolu for September 2026
Your guide to Bolu weather in September - trends and predictions
In general, the average temperature in Bolu at the beginning of September is 26.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °C by the end of September.
The climate of Bolu in September is notably wet, with an average of 14 rainy days, and a total of 97.5 mm of precipitation.
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
16
Dry days
14
Rainy days
0
Snow days
24°/10°
Temperatures
11 km/h
Avg max wind
70 %
Avg humidity
Bolu Weather September
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Temperatures trend during September in Bolu
See the weather trend as well as the moving average line
September weather in Bolu day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy light rain with thunder | 27° /11° | 6.3 mm | 7 | |
| 2 Sept. |  Moderate or heavy rain shower | 26° /12° | 6.1 mm | 6 | |
| 3 Sept. |  Patchy rain possible | 26° /10° | 3.2 mm | 6 | |
| 4 Sept. |  Partly cloudy | 29° /9° | 0 mm | 8 | |
| 5 Sept. |  Sunny | 28° /10° | 1.5 mm | 7 | |
| 6 Sept. | Sunny | 24° /9° | 3.3 mm | 6 | |
| 7 Sept. | Patchy rain possible | 23° /10° | 1.2 mm | 6 | |
| 8 Sept. |  Thundery outbreaks possible | 22° /9° | 0.9 mm | 5 | |
| 9 Sept. | Patchy rain possible | 25° /9° | 0.2 mm | 6 | |
| 10 Sept. | Sunny | 27° /10° | 0 mm | 7 | |
| 11 Sept. | Patchy rain possible | 26° /10° | 0.4 mm | 6 | |
| 12 Sept. | Patchy rain possible | 27° /11° | 1.2 mm | 7 | |
| 13 Sept. | Sunny | 27° /12° | 0.2 mm | 6 | |
| 14 Sept. | Sunny | 28° /12° | 0 mm | 7 | |
| 15 Sept. | Patchy rain possible | 26° /9° | 1.6 mm | 7 | |
| 16 Sept. | Light rain shower | 21° /8° | 1.7 mm | 5 | |
| 17 Sept. | Patchy rain possible | 25° /10° | 0 mm | 6 | |
| 18 Sept. | Light rain shower | 19° /8° | 5.7 mm | 5 | |
| 19 Sept. | Light rain shower | 17° /5° | 3.5 mm | 4 | |
| 20 Sept. | Patchy light rain with thunder | 19° /6° | 1 mm | 4 | |
| 21 Sept. | Patchy light rain with thunder | 22° /7° | 3.2 mm | 6 | |
| 22 Sept. | Light rain shower | 21° /6° | 1.4 mm | 6 | |
| 23 Sept. |  Light rain | 21° /7° | 3.4 mm | 5 | |
| 24 Sept. | Sunny | 24° /7° | 0 mm | 7 | |
| 25 Sept. | Sunny | 23° /7° | 0 mm | 6 | |
| 26 Sept. | Sunny | 22° /9° | 0 mm | 6 | |
| 27 Sept. | Sunny | 21° /9° | 0 mm | 6 | |
| 28 Sept. | Sunny | 23° /8° | 0 mm | 6 | |
| 29 Sept. | Sunny | 22° /8° | 2.5 mm | 6 | |
| 30 Sept. | Moderate or heavy rain shower | 16° /6° | 15.3 mm | 4 | |
| Next | |||||
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.
Change Month
Bolu weather in September vs August vs October
Compare September weather in Bolu with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Patchy rain possible | Sunny |
| Temperatures | 29°/11° | 24°/10° | 17°/5° |
| Rainfall | 21 mm | 97 mm | 45 mm |
| Wind | 15.9 km/h | 11.4 km/h | 9.4 km/h |
| Humidity | 58% | 70% | 69% |
| Rainy days | 7 days | 14 days | 9 days |
| Dry days | 24 days | 16 days | 22 days |
Planning a trip to Bolu? Discover the best time to visit
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 14 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 ☀️
Quick links
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