Greenock
September
Weather in Greenock for September 2025
Your guide to Greenock weather in September - trends and predictions
In general, the average temperature in Greenock at the beginning of September is 19 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12 °C by the end of September.
Expect significant rainfall in Greenock during September, with an average of 19 rainy days.
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11
Dry days
19
Rainy days
0
Snow days
16°/9°
Temperatures
18 km/h
Avg max wind
86 %
Avg humidity
Greenock in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  17° | 3 16° | 4 17° | 5 21° | 6 22° | 7  23° |
| 8 24° | 9 17° | 10 16° | 11 14° | 12 13° | 13  12° | 14  15° |
| 15 13° | 16 15° | 17  16° | 18 16° | 19 17° | 20 17° | 21 15° |
| 22 15° | 23 15° | 24 12° | 25 12° | 26 12° | 27  12° | 28 12° |
| 29 13° | 30 11° |
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Temperatures trend during September in Greenock
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Mist | 17° /7° | 0.3 mm | 4 | |
| 2 Sept. | Partly cloudy | 17° /9° | 3 mm | 5 | |
| 3 Sept. | Fog | 16° /8° | 0.8 mm | 4 | |
| 4 Sept. | Fog | 17° /7° | 2.2 mm | 4 | |
| 5 Sept. | Partly cloudy | 21° /8° | 0 mm | 5 | |
| 6 Sept. | Mist | 22° /10° | 0 mm | 5 | |
| 7 Sept. | Patchy rain possible | 23° /11° | 0.1 mm | 5 | |
| 8 Sept. | Partly cloudy | 24° /12° | 2.4 mm | 6 | |
| 9 Sept. | Light rain shower | 17° /10° | 2.9 mm | 4 | |
| 10 Sept. | Patchy rain possible | 16° /7° | 2.2 mm | 4 | |
| 11 Sept. | Light rain shower | 14° /6° | 1.3 mm | 4 | |
| 12 Sept. | Mist | 13° /4° | 0.3 mm | 4 | |
| 13 Sept. | Moderate rain | 12° /5° | 12.4 mm | 3 | |
| 14 Sept. | Overcast | 15° /8° | 2.4 mm | 4 | |
| 15 Sept. | Mist | 13° /6° | 0.7 mm | 4 | |
| 16 Sept. | Patchy rain possible | 15° /7° | 0.2 mm | 5 | |
| 17 Sept. | Light rain | 16° /8° | 5.2 mm | 4 | |
| 18 Sept. | Light rain shower | 16° /9° | 14.6 mm | 4 | |
| 19 Sept. | Light rain shower | 17° /7° | 9.7 mm | 5 | |
| 20 Sept. | Light rain shower | 17° /7° | 5.4 mm | 5 | |
| 21 Sept. | Light rain shower | 15° /8° | 2.5 mm | 4 | |
| 22 Sept. | Patchy rain possible | 15° /7° | 0.4 mm | 4 | |
| 23 Sept. | Overcast | 15° /6° | 1.1 mm | 4 | |
| 24 Sept. | Light rain shower | 12° /7° | 21.3 mm | 3 | |
| 25 Sept. | Light rain shower | 12° /8° | 2.8 mm | 3 | |
| 26 Sept. | Light rain shower | 12° /6° | 6.9 mm | 3 | |
| 27 Sept. | Heavy rain | 12° /5° | 14.7 mm | 3 | |
| 28 Sept. | Moderate rain | 12° /7° | 6.8 mm | 3 | |
| 29 Sept. | Light rain shower | 13° /6° | 1.2 mm | 3 | |
| 30 Sept. | Light rain shower | 11° /7° | 3.9 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.
Greenock in September - FAQ
What are the expected maximum and minimum temperatures in Greenock during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Greenock during September?
Significant rainfall exceeding 195.9 mm is expected in Greenock during September, occurring over more than 19 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 18 km/h, suggesting breezy to windy conditions, depending on your activities.
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