Greenock
September
Weather in Greenock for September 2026
Your guide to Greenock weather in September - trends and predictions
Until now, September 2026 in Greenock is slightly cooler than the historical average by 1.5 °C.
The forecast for the next days in Greenock predicts temperatures to be around 14 °C, close to the historical average.
In general, the average temperature in Greenock at the beginning of September is 17.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.9 °C by the end of September.
Greenock experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 136 mm.
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Temperatures
Rain 🌧️
More
5
Dry days
25
Rainy days
0
Snow days
15°/7°
Temperatures
16 km/h
Avg max wind
86 %
Avg humidity
Greenock Weather September
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Temperatures trend during September in Greenock
See the weather trend as well as the moving average line
September weather in Greenock day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Mist | 16° /9° | 5.6 mm | 3 | |
| 2 Sept. |  Light rain shower | 16° /8° | 3.5 mm | 4 | |
| 3 Sept. | Fog | 15° /9° | 4.6 mm | 3 | |
| 4 Sept. | Light rain shower | 16° /8° | 2.8 mm | 3 | |
| 5 Sept. |  Partly cloudy | 18° /8° | 0.4 mm | 4 | |
| 6 Sept. | Mist | 19° /9° | 1.6 mm | 4 | |
| 7 Sept. | Patchy rain possible | 20° /11° | 3.9 mm | 4 | |
| 8 Sept. | Patchy rain possible | 19° /10° | 2.5 mm | 4 | |
| 9 Sept. | Light rain shower | 16° /8° | 1.6 mm | 4 | |
| 10 Sept. | Patchy rain possible | 15° /8° | 8.1 mm | 3 | |
| 11 Sept. | Light rain shower | 14° /7° | 2.8 mm | 3 | |
| 12 Sept. | Mist | 14° /6° | 6.4 mm | 3 | |
| 13 Sept. | Light rain shower | 13° /6° | 7.7 mm | 3 | |
| 14 Sept. |  Overcast | 15° /8° | 6.5 mm | 3 | |
| 15 Sept. | Light rain shower | 14° /8° | 5.5 mm | 3 | |
| 16 Sept. | Patchy rain possible | 15° /8° | 1.6 mm | 3 | |
| 17 Sept. |  Light rain | 15° /8° | 5.6 mm | 3 | |
| 18 Sept. | Light rain shower | 16° /10° | 9.7 mm | 3 | |
| 19 Sept. | Light rain shower | 16° /7° | 6.3 mm | 4 | |
| 20 Sept. | Patchy rain possible | 14° /9° | 0.9 mm | 2.8 | |
| 21 Sept. | Fog | 17° /9° | 1.7 mm | 1.2 | |
| 22 Sept. | Fog | 16° /10° | 1.5 mm | 1.3 | |
| 23 Sept. |  Sunny | 14° /7° | 2.4 mm | 2.1 | |
| 24 Sept. | Overcast | 14° /5° | 0 mm | 4 | |
| 25 Sept. | Mist | 16° /11° | 0.1 mm | 5 | |
| 26 Sept. | Overcast | 15° /9° | 0 mm | 4 | |
| 27 Sept. | Overcast | 15° /9° | 0.2 mm | 4 | |
| 28 Sept. | Patchy rain possible | 12° /6° | 11.7 mm | 3 | |
| 29 Sept. | Light rain shower | 11° /5° | 6.6 mm | 3 | |
| 30 Sept. | Patchy rain possible | 14° /10° | 2.3 mm | 3 | |
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Important Notice
Our weather forecast for Greenock 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 Greenock forecast closer to your planned date for the most up-to-date weather information.
Change Month
Greenock in September - FAQ
What are the expected maximum and minimum temperatures in Greenock during September?
During September, expect a variety of temperatures with highs around 15° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Greenock during September?
Significant rainfall exceeding 136 mm is expected in Greenock during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Greenock during September?
The average wind speed in Greenock during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Greenock
Explore the daily rainfall trends and prepare for Greenocks September weather 💧
Typically, Greenock has 25 rainy days in September with a total of 136 mm of rainfall.
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