Plymouth
September
Weather in Plymouth for September 2026
Your guide to Plymouth weather in September - trends and predictions
Until now, September 2026 in Plymouth has been nearly identical to the historical average, with a temperature of 17.8 °C (showing only a slight deviation of 0.5 °C).
The forecast for the next days in Plymouth predicts temperatures to be around 19 °C, close to the historical average.
In general, the average temperature in Plymouth at the beginning of September is 18.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 15.4 °C by the end of September.
Plymouth experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 125 mm.
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Temperatures
Rain 🌧️
More
4
Dry days
26
Rainy days
0
Snow days
17°/12°
Temperatures
27 km/h
Avg max wind
81 %
Avg humidity
Plymouth Weather September
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Temperatures trend during September in Plymouth
See the weather trend as well as the moving average line
September weather in Plymouth day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 18° /13° | 3 mm | 4 | |
| 2 Sept. |  Patchy rain possible | 18° /13° | 5 mm | 3 | |
| 3 Sept. | Patchy rain possible | 18° /14° | 4.9 mm | 4 | |
| 4 Sept. | Patchy rain possible | 18° /14° | 2.5 mm | 4 | |
| 5 Sept. |  Sunny | 18° /13° | 3.8 mm | 4 | |
| 6 Sept. | Patchy rain possible | 19° /14° | 7.1 mm | 4 | |
| 7 Sept. |  Moderate or heavy rain shower | 19° /15° | 7.3 mm | 4 | |
| 8 Sept. | Patchy rain possible | 18° /14° | 17.3 mm | 4 | |
| 9 Sept. |  Overcast | 18° /14° | 5.6 mm | 5 | |
| 10 Sept. | Patchy rain possible | 17° /9° | 1.6 mm | 2.6 | |
| 11 Sept. | Sunny | 21° /12° | 0 mm | 4.6 | |
| 12 Sept. | Overcast | 21° /12° | 0.3 mm | 4.6 | |
| 13 Sept. | Light rain shower | 22° /14° | 11 mm | 4.4 | |
| 14 Sept. | Overcast | 24° /13° | 0.1 mm | 5 | |
| 15 Sept. |  Fog | 19° /12° | 0 mm | 5 | |
| 16 Sept. | Patchy rain possible | 17° /10° | 0.1 mm | 4 | |
| 17 Sept. | Overcast | 17° /10° | 0.6 mm | 4 | |
| 18 Sept. | Patchy rain possible | 16° /11° | 4.1 mm | 4 | |
| 19 Sept. | Sunny | 17° /9° | 0 mm | 5 | |
| 20 Sept. | Overcast | 16° /9° | 0 mm | 4 | |
| 21 Sept. | Overcast | 18° /10° | 0 mm | 5 | |
| 22 Sept. | Patchy rain possible | 17° /11° | 0 mm | 5 | |
| 23 Sept. | Patchy rain possible | 20° /12° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 16° /12° | 1.2 mm | 4 | |
| 25 Sept. | Patchy rain possible | 16° /11° | 2.5 mm | 4 | |
| 26 Sept. | Light rain shower | 15° /11° | 3.4 mm | 4 | |
| 27 Sept. | Light rain shower | 15° /11° | 2.8 mm | 3 | |
| 28 Sept. | Light rain shower | 15° /10° | 1.3 mm | 4 | |
| 29 Sept. | Patchy rain possible | 15° /10° | 8.1 mm | 4 | |
| 30 Sept. | Overcast | 16° /11° | 0.8 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Plymouth 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 Plymouth forecast closer to your planned date for the most up-to-date weather information.
Change Month
Plymouth in September - FAQ
What are the expected maximum and minimum temperatures in Plymouth during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Plymouth during September?
Significant rainfall exceeding 125 mm is expected in Plymouth during September, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Plymouth during September?
The average wind speed in Plymouth during September is 27 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Plymouth
Explore the daily rainfall trends and prepare for Plymouths September weather 💧
Typically, Plymouth has 26 rainy days in September with a total of 125 mm of rainfall.
UV exposure in Plymouth during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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