Weather in Bolu for September 2026
Until now, September 2026 in Bolu is cooler than usual, with temperatures averaging 22.4 °C, this is 2.4 °C below the typical seasonal average.
The forecast for the next days in Bolu predicts a temperature of 19.4 °C, which is cooler than the historical average.
In general, the average temperature in Bolu at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.1 °C by the end of September.
Bolu in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 64.1 mm.
Is September a good time to visit Bolu? check out the best time to travel to Bolu page.
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Bolu Weather September
Temperatures trend during September in Bolu
September weather in Bolu day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 26° /12° | 4.2 mm | 7 | |
| 2 Sept. | Sunny | 25° /12° | 4.1 mm | 7 | |
| 3 Sept. | Sunny | 25° /12° | 2.2 mm | 7 | |
| 4 Sept. |  Partly cloudy | 26° /9° | 0.2 mm | 8 | |
| 5 Sept. | Sunny | 27° /10° | 1 mm | 7 | |
| 6 Sept. | Sunny | 24° /11° | 2.2 mm | 7 | |
| 7 Sept. |  Patchy rain possible | 21° /10° | 0.8 mm | 6 | |
| 8 Sept. |  Thundery outbreaks possible | 21° /9° | 0.6 mm | 6 | |
| 9 Sept. | Patchy rain possible | 25° /10° | 0.1 mm | 6 | |
| 10 Sept. | Sunny | 26° /12° | 0 mm | 7 | |
| 11 Sept. | Sunny | 26° /11° | 0.3 mm | 6 | |
| 12 Sept. | Sunny | 27° /12° | 0.8 mm | 7 | |
| 13 Sept. | Sunny | 24° /11° | 0.1 mm | 6.8 | |
| 14 Sept. | Light rain shower | 16° /8° | 4.1 mm | 4.3 | |
| 15 Sept. |  Overcast | 16° /7° | 1.7 mm | 6.6 | |
| 16 Sept. | Patchy rain possible | 16° /8° | 0.1 mm | 4.6 | |
| 17 Sept. | Sunny | 19° /9° | 0 mm | 6 | |
| 18 Sept. | Sunny | 22° /14° | 0 mm | 6 | |
| 19 Sept. | Sunny | 23° /17° | 0 mm | 6 | |
| 20 Sept. | Sunny | 22° /16° | 0 mm | 6 | |
| 21 Sept. | Overcast | 20° /15° | 0 mm | 4 | |
| 22 Sept. | Sunny | 22° /15° | 0 mm | 6 | |
| 23 Sept. | Overcast | 19° /14° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 18° /10° | 0.4 mm | 5 | |
| 25 Sept. | Patchy rain possible | 17° /10° | 0.1 mm | 4 | |
| 26 Sept. | Sunny | 17° /7° | 0 mm | 5 | |
| 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 | |
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Bolu weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Patchy rain possible |
| Temperatures | 29°/11° | 23°/9° | 17°/5° |
| Rainfall | 21 mm | 64 mm | 66 mm |
| Wind | 15.7 km/h | 12.4 km/h | 10.7 km/h |
| Humidity | 58% | 69% | 70% |
| Rainy days | 7 days | 18 days | 18 days |
| Dry days | 24 days | 12 days | 13 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?
How much rainfall should be expected in Bolu during September?
What are the typical wind conditions in Bolu during September?
September rainfall patterns in Bolu
UV exposure in Bolu during September
What to pack to Bolu in September?
Mild & changeable · highs around 23 °C, frequent showers
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
👟 Footwear
🎒 Accessories
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Where is Bolu?Get accurate weather forecasts for Bolu, located at latitude 40.736 and longitude 31.606. Stay updated with localized weather information tailored for Bolu.