September
Weather in Douglas for September 2025
Your guide to Douglas weather in September - trends and predictions
In general, the average temperature in Douglas at the beginning of September is 16.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14 °C by the end of September.
Expect significant rainfall in Douglas during September, with an average of 18 rainy days.
Is September a good time to visit Douglas? check out the best time to travel to Douglas page.
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12
Dry days
18
Rainy days
0
Snow days
16°/14°
Temperatures
35 km/h
Avg max wind
84 %
Avg humidity
Douglas in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  16° | 2  17° | 3 15° | 4  16° | 5  18° | 6 18° | 7  18° |
| 8 17° | 9  17° | 10  16° | 11  14° | 12 14° | 13 14° | 14  15° |
| 15 14° | 16 14° | 17 16° | 18 15° | 19 16° | 20 17° | 21 15° |
| 22 15° | 23 14° | 24  15° | 25 13° | 26 14° | 27 14° | 28 14° |
| 29 14° | 30 14° |
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Temperatures trend during September in Douglas
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. | Light rain shower | 16° /14° | 2.5 mm | 4 | |
| 2 Sept. | Overcast | 17° /13° | 2.8 mm | 4 | |
| 3 Sept. | Overcast | 15° /13° | 0.3 mm | 4 | |
| 4 Sept. | Sunny | 16° /13° | 0.9 mm | 4 | |
| 5 Sept. | Partly cloudy | 18° /13° | 0.1 mm | 5 | |
| 6 Sept. | Partly cloudy | 18° /14° | 0 mm | 5 | |
| 7 Sept. | Patchy light rain with thunder | 18° /15° | 6.5 mm | 4 | |
| 8 Sept. | Partly cloudy | 17° /14° | 0.5 mm | 5 | |
| 9 Sept. | Mist | 17° /14° | 0.1 mm | 4 | |
| 10 Sept. | Moderate rain at times | 16° /13° | 6.3 mm | 4 | |
| 11 Sept. | Light rain | 14° /12° | 5.5 mm | 4 | |
| 12 Sept. | Sunny | 14° /11° | 1.8 mm | 4 | |
| 13 Sept. | Overcast | 14° /11° | 0.7 mm | 4 | |
| 14 Sept. | Cloudy | 15° /13° | 0.2 mm | 4 | |
| 15 Sept. | Overcast | 14° /13° | 0.9 mm | 3 | |
| 16 Sept. | Light rain shower | 14° /11° | 3.2 mm | 4 | |
| 17 Sept. | Light rain | 16° /13° | 5.7 mm | 5 | |
| 18 Sept. | Patchy light drizzle | 15° /12° | 2.5 mm | 5 | |
| 19 Sept. | Light rain | 16° /12° | 5.9 mm | 5 | |
| 20 Sept. | Patchy light rain | 17° /13° | 2.6 mm | 5 | |
| 21 Sept. | Light rain shower | 15° /12° | 0.7 mm | 4 | |
| 22 Sept. | Light rain shower | 15° /12° | 1.6 mm | 4 | |
| 23 Sept. | Patchy rain possible | 14° /11° | 3.7 mm | 3 | |
| 24 Sept. | Moderate rain | 15° /12° | 9.6 mm | 4 | |
| 25 Sept. | Patchy rain possible | 13° /12° | 0.8 mm | 4 | |
| 26 Sept. | Light rain shower | 14° /11° | 15.7 mm | 4 | |
| 27 Sept. | Light rain shower | 14° /11° | 9.5 mm | 4 | |
| 28 Sept. | Light rain shower | 14° /11° | 3.8 mm | 4 | |
| 29 Sept. | Patchy rain possible | 14° /11° | 2.1 mm | 4 | |
| 30 Sept. | Light rain shower | 14° /11° | 10 mm | 4 | |
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Important Notice
Our weather forecast for Douglas 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 Douglas forecast closer to your planned date for the most up-to-date weather information.
Douglas in September - FAQ
What are the expected maximum and minimum temperatures in Douglas during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Douglas during September?
Significant rainfall exceeding 138.4 mm is expected in Douglas during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Douglas during September?
The average wind speed in Douglas during September is 35 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Douglas in September?
As you prepare for your trip to Douglas in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Douglas, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
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