Eilean Siar (Stornoway)
September
Weather in Eilean Siar for September 2025
Your guide to Eilean Siar weather in September - trends and predictions
In general, the average temperature in Eilean Siar at the beginning of September is 15.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.1 °C by the end of September.
Eilean Siar in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 63.7 mm.
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Temperatures
Rain 🌧️
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11
Dry days
19
Rainy days
0
Snow days
13°/9°
Temperatures
25 km/h
Avg max wind
80 %
Avg humidity
Eilean Siar Weather September
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  16° | 2  15° | 3 13° | 4  14° | 5  15° | 6  19° | 7 15° |
| 8 14° | 9  13° | 10 10° | 11 11° | 12 10° | 13 12° | 14 14° |
| 15  13° | 16 13° | 17 16° | 18 17° | 19 17° | 20 15° | 21 16° |
| 22 14° | 23 11° | 24 10° | 25 9° | 26 10° | 27 9° | 28 10° |
| 29 12° | 30 11° |
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Temperatures trend during September in Eilean Siar
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. | Overcast | 16° /12° | 0 mm | 4 | |
| 2 Sept. | Patchy rain possible | 15° /12° | 0.9 mm | 4 | |
| 3 Sept. | Patchy rain possible | 13° /10° | 1.2 mm | 3 | |
| 4 Sept. | Cloudy | 14° /8° | 0 mm | 3 | |
| 5 Sept. | Partly cloudy | 15° /11° | 0 mm | 5 | |
| 6 Sept. | Sunny | 19° /12° | 0 mm | 5 | |
| 7 Sept. | Overcast | 15° /12° | 0 mm | 4 | |
| 8 Sept. | Patchy rain possible | 14° /10° | 0.3 mm | 3 | |
| 9 Sept. | Heavy rain at times | 13° /9° | 3.5 mm | 3 | |
| 10 Sept. | Patchy rain possible | 10° /7° | 3.3 mm | 3 | |
| 11 Sept. | Patchy rain possible | 11° /7° | 1.4 mm | 3 | |
| 12 Sept. | Patchy rain possible | 10° /7° | 0.4 mm | 3 | |
| 13 Sept. | Patchy rain possible | 12° /8° | 4.1 mm | 3 | |
| 14 Sept. | Heavy rain at times | 14° /10° | 12.2 mm | 3 | |
| 15 Sept. | Moderate or heavy rain shower | 13° /10° | 8.7 mm | 3 | |
| 16 Sept. | Patchy rain possible | 13° /8° | 0.3 mm | 3 | |
| 17 Sept. | Overcast | 16° /13° | 0 mm | 4 | |
| 18 Sept. | Sunny | 17° /12° | 0 mm | 5 | |
| 19 Sept. | Sunny | 17° /12° | 0 mm | 5 | |
| 20 Sept. | Sunny | 15° /10° | 0 mm | 5 | |
| 21 Sept. | Sunny | 16° /11° | 0 mm | 5 | |
| 22 Sept. | Partly cloudy | 14° /10° | 0 mm | 4 | |
| 23 Sept. | Moderate rain at times | 11° /8° | 4.5 mm | 3 | |
| 24 Sept. | Moderate rain at times | 10° /7° | 10.8 mm | 2 | |
| 25 Sept. | Patchy rain possible | 9° /7° | 3.4 mm | 2 | |
| 26 Sept. | Patchy rain possible | 10° /8° | 4.6 mm | 3 | |
| 27 Sept. | Patchy rain possible | 9° /6° | 0.4 mm | 2 | |
| 28 Sept. | Moderate rain at times | 10° /6° | 1.7 mm | 3 | |
| 29 Sept. | Patchy rain possible | 12° /10° | 0.7 mm | 3 | |
| 30 Sept. | Light rain shower | 11° /10° | 1.2 mm | 3 | |
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Important Notice
Our weather forecast for Eilean Siar 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 Eilean Siar forecast closer to your planned date for the most up-to-date weather information.
Eilean Siar in September - FAQ
What are the expected maximum and minimum temperatures in Eilean Siar during September?
During September, expect a variety of temperatures with highs around 13° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in Eilean Siar during September?
Moderate rainfall is anticipated in Eilean Siar during September, with a total of 63.7 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Eilean Siar during September?
The average wind speed in Eilean Siar during September is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Eilean Siar
Explore the daily rainfall trends and prepare for Eilean Siars September weather 💧
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