Falmouth
September
Weather in Falmouth for September 2026
Your guide to Falmouth weather in September - trends and predictions
In general, the average temperature in Falmouth at the beginning of September is 17.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 15.3 °C by the end of September.
Falmouth in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 119.5 mm.
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Temperatures
Rain 🌧️
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11
Dry days
19
Rainy days
0
Snow days
16°/12°
Temperatures
29 km/h
Avg max wind
80 %
Avg humidity
Falmouth Weather September
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Temperatures trend during September in Falmouth
See the weather trend as well as the moving average line
September weather in Falmouth day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 17° /14° | 8 mm | 4 | |
| 2 Sept. | Light rain shower | 18° /14° | 21.7 mm | 4 | |
| 3 Sept. | Light rain shower | 18° /14° | 8.9 mm | 4 | |
| 4 Sept. | Patchy rain possible | 17° /13° | 12.8 mm | 4 | |
| 5 Sept. | Patchy rain possible | 18° /13° | 0 mm | 4 | |
| 6 Sept. |  Overcast | 18° /14° | 0.1 mm | 4 | |
| 7 Sept. | Light rain shower | 17° /12° | 3.8 mm | 4 | |
| 8 Sept. | Patchy rain possible | 17° /12° | 0.8 mm | 4 | |
| 9 Sept. |  Partly cloudy | 16° /13° | 10.8 mm | 5 | |
| 10 Sept. |  Moderate or heavy rain shower | 17° /13° | 4.2 mm | 4 | |
| 11 Sept. | Patchy rain possible | 15° /12° | 1.8 mm | 4 | |
| 12 Sept. | Patchy rain possible | 14° /10° | 4.3 mm | 4 | |
| 13 Sept. | Patchy rain possible | 15° /10° | 3.2 mm | 4 | |
| 14 Sept. |  Sunny | 16° /10° | 2.5 mm | 5 | |
| 15 Sept. | Patchy rain possible | 16° /13° | 0.5 mm | 4 | |
| 16 Sept. | Patchy rain possible | 17° /13° | 1.1 mm | 4 | |
| 17 Sept. | Partly cloudy | 17° /13° | 0.2 mm | 5 | |
| 18 Sept. | Sunny | 19° /13° | 0 mm | 5 | |
| 19 Sept. | Sunny | 19° /14° | 0 mm | 6 | |
| 20 Sept. |  Heavy rain at times | 18° /13° | 5 mm | 4 | |
| 21 Sept. | Moderate rain at times | 15° /10° | 3.1 mm | 4 | |
| 22 Sept. | Moderate or heavy rain shower | 15° /10° | 2.2 mm | 4 | |
| 23 Sept. | Patchy rain possible | 16° /10° | 0.6 mm | 4 | |
| 24 Sept. | Patchy rain possible | 16° /10° | 0.3 mm | 4 | |
| 25 Sept. | Heavy rain at times | 16° /11° | 4.6 mm | 5 | |
| 26 Sept. | Patchy rain possible | 15° /10° | 4.1 mm | 4 | |
| 27 Sept. | Moderate rain at times | 14° /11° | 3.7 mm | 3 | |
| 28 Sept. | Overcast | 15° /9° | 0.1 mm | 4 | |
| 29 Sept. | Moderate or heavy rain shower | 15° /10° | 10.6 mm | 4 | |
| 30 Sept. | Patchy rain possible | 16° /11° | 0.5 mm | 5 | |
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Important Notice
Our weather forecast for Falmouth 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 Falmouth forecast closer to your planned date for the most up-to-date weather information.
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Falmouth in September - FAQ
What are the expected maximum and minimum temperatures in Falmouth during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Falmouth during September?
Significant rainfall exceeding 119.5 mm is expected in Falmouth during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Falmouth during September?
The average wind speed in Falmouth during September is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Falmouth
Explore the daily rainfall trends and prepare for Falmouths September weather 💧
Typically, Falmouth has 19 rainy days in September with a total of 119.5 mm of rainfall.
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