Weather in Bangor for September 2026
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Until now, September 2026 in Bangor has been nearly identical to the historical average, with a temperature of 16.5 °C (showing only a slight deviation of 0.2 °C).
The forecast for the next days in Bangor predicts temperatures to be around 16 °C, close to the historical average.
In general, the average temperature in Bangor at the beginning of September is 16.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14.7 °C by the end of September.
Bangor experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 116 mm.
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Bangor Weather September
Temperatures trend during September in Bangor
September weather in Bangor day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 16° /12° | 1.8 mm | 3 | |
| 2 Sept. | Light rain shower | 17° /11° | 3 mm | 3 | |
| 3 Sept. | Light rain shower | 16° /11° | 5.2 mm | 3 | |
| 4 Sept. | Patchy rain possible | 16° /10° | 1.8 mm | 4 | |
| 5 Sept. |  Overcast | 17° /11° | 0 mm | 4 | |
| 6 Sept. |  Partly cloudy | 18° /13° | 0.2 mm | 4 | |
| 7 Sept. | Light rain shower | 17° /12° | 2.8 mm | 4 | |
| 8 Sept. | Patchy rain possible | 17° /10° | 0.5 mm | 4 | |
| 9 Sept. |  Mist | 17° /11° | 0.6 mm | 4 | |
| 10 Sept. | Light rain shower | 16° /11° | 6 mm | 3 | |
| 11 Sept. | Light rain shower | 15° /10° | 2.4 mm | 3 | |
| 12 Sept. | Patchy rain possible | 19° /12° | 0.8 mm | 3 | |
| 13 Sept. | Overcast | 17° /11° | 0 mm | 3.2 | |
| 14 Sept. | Partly cloudy | 20° /14° | 12.5 mm | 2.7 | |
| 15 Sept. | Patchy rain possible | 16° /12° | 0.5 mm | 5 | |
| 16 Sept. | Patchy rain possible | 15° /11° | 0.5 mm | 4 | |
| 17 Sept. | Patchy rain possible | 14° /11° | 0.9 mm | 3 | |
| 18 Sept. | Overcast | 15° /10° | 0 mm | 5 | |
| 19 Sept. |  Cloudy | 17° /10° | 0.4 mm | 4 | |
| 20 Sept. |  Sunny | 16° /10° | 1.8 mm | 4 | |
| 21 Sept. | Sunny | 15° /8° | 0.1 mm | 4 | |
| 22 Sept. | Overcast | 14° /10° | 2.6 mm | 3 | |
| 23 Sept. | Overcast | 13° /9° | 0 mm | 4 | |
| 24 Sept. | Sunny | 18° /13° | 0 mm | 5 | |
| 25 Sept. | Sunny | 17° /12° | 0 mm | 5 | |
| 26 Sept. |  Moderate or heavy rain with thunder | 13° /10° | 11 mm | 4 | |
| 27 Sept. | Light rain shower | 13° /8° | 14.6 mm | 3 | |
| 28 Sept. | Light rain shower | 14° /8° | 1.4 mm | 3 | |
| 29 Sept. | Cloudy | 14° /10° | 0.9 mm | 3 | |
| 30 Sept. | Light rain shower | 14° /10° | 11.7 mm | 4 | |
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Bangor in September - FAQ
What are the expected maximum and minimum temperatures in Bangor during September?
How much rainfall should be expected in Bangor during September?
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September rainfall patterns in Bangor
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