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Weather in Greenock for September 2025

Your guide to Greenock weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Greenock is cooler than usual, with temperatures averaging 13.9 °C, this is -2.4 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Greenock with the forecast suggesting a temperature of 14.2 °C, lower than the historical average.

  • In general, the average temperature in Greenock at the beginning of September is 17.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.1 °C by the end of September.

    • Rain 🌧️

  • Greenock experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 127.9 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
9
Dry days
Average rainy days
21
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/8°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
85 %
Avg humidity

Greenock Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Mist
16°
2
Light rain shower
17°
3
Fog
15°
4
Light rain shower
17°
5
Partly cloudy
19°
6
Mist
20°
7
Patchy rain possible
21°
8
Partly cloudy
21°
9
Light rain shower
16°
10
Patchy rain possible
15°
11
Light rain shower
13°
12
Mist
13°
13
Light rain shower
12°
14
Overcast
14°
15
Mist
13°
16
Patchy rain possible
15°
17
Moderate rain
15°
18
Moderate rain
16°
19
Patchy rain possible
13°
20
Moderate rain
13°
21
Partly cloudy
12°
22
Overcast
11°
23
Overcast
16°
24
Overcast
14°
25
Sunny
14°
26
Sunny
14°
27
Cloudy
14°
28
Partly cloudy
15°
29
Sunny
17°
30
Light rain shower
11°

Temperatures trend during September in Greenock

See the weather trend as well as the moving average line

September weather in Greenock day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 16° /8° 4.3 mm 4
2 Sept. Light rain shower
Light rain shower
 17° /9° 2.8 mm 4
3 Sept. Fog
Fog
 15° /8° 4.2 mm 3
4 Sept. Light rain shower
Light rain shower
 17° /7° 2.3 mm 4
5 Sept. Partly cloudy
Partly cloudy
 19° /8° 0.3 mm 5
6 Sept. Mist
Mist
 20° /9° 0.1 mm 5
7 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 4 mm 5
8 Sept. Partly cloudy
Partly cloudy
 21° /10° 2 mm 5
9 Sept. Light rain shower
Light rain shower
 16° /9° 2.1 mm 4
10 Sept. Patchy rain possible
Patchy rain possible
 15° /8° 8.1 mm 4
11 Sept. Light rain shower
Light rain shower
 13° /6° 3.6 mm 3
12 Sept. Mist
Mist
 13° /5° 3.5 mm 3
13 Sept. Light rain shower
Light rain shower
 12° /5° 10.2 mm 3
14 Sept. Overcast
Overcast
 14° /7° 5.8 mm 3
15 Sept. Mist
Mist
 13° /6° 0.7 mm 4
16 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 0.6 mm 0.7
17 Sept. Moderate rain
Moderate rain
 15° /9° 5 mm 0.3
18 Sept. Moderate rain
Moderate rain
 16° /11° 7.6 mm 0.7
19 Sept. Patchy rain possible
Patchy rain possible
 13° /7° 3.1 mm 0.4
20 Sept. Moderate rain
Moderate rain
 13° /6° 11.2 mm 0.3
21 Sept. Partly cloudy
Partly cloudy
 12° /4° 0.1 mm 3
22 Sept. Overcast
Overcast
 11° /3° 0 mm 2
23 Sept. Overcast
Overcast
 16° /8° 0.1 mm 3
24 Sept. Overcast
Overcast
 14° /8° 0 mm 3
25 Sept. Sunny
Sunny
 14° /6° 0 mm 3
26 Sept. Sunny
Sunny
 14° /5° 0 mm 3
27 Sept. Cloudy
Cloudy
 14° /7° 0 mm 3
28 Sept. Partly cloudy
Partly cloudy
 15° /10° 0 mm 4
29 Sept. Sunny
Sunny
 17° /8° 0 mm 4
30 Sept. Light rain shower
Light rain shower
 11° /7° 3.9 mm 3
Next
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.
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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 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Greenock during September?
Significant rainfall exceeding 127.9 mm is expected in Greenock during September, occurring over more than 21 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 💧

UV exposure in Greenock during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Greenock, located at latitude 55.948 and longitude -4.761. Stay updated with localized weather information tailored for Greenock.

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