North Ostrobothnia (Oulu)
September
Weather in North Ostrobothnia for September 2025
Your guide to North Ostrobothnia weather in September - trends and predictions
In general, the average temperature in North Ostrobothnia at the beginning of September is 17.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.3 °C by the end of September.
Expect significant rainfall in North Ostrobothnia during September, with an average of 17 rainy days.
Is September a good time to visit North Ostrobothnia? check out the best time to travel to North Ostrobothnia page.
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13
Dry days
17
Rainy days
0
Snow days
14°/9°
Temperatures
20 km/h
Avg max wind
85 %
Avg humidity
North Ostrobothnia in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2 18° | 3 16° | 4 18° | 5 17° | 6  18° | 7  18° |
| 8  19° | 9 20° | 10  21° | 11 18° | 12 17° | 13 14° | 14 12° |
| 15 12° | 16 13° | 17 12° | 18 12° | 19  15° | 20 14° | 21 10° |
| 22 14° | 23 12° | 24 13° | 25 14° | 26 13° | 27 14° | 28 10° |
| 29 11° | 30 11° |
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Temperatures trend during September in North Ostrobothnia
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. | Patchy rain possible | 17° /12° | 2.6 mm | 4 | |
| 2 Sept. | Light rain shower | 18° /11° | 1.2 mm | 4 | |
| 3 Sept. | Light rain shower | 16° /12° | 4.1 mm | 4 | |
| 4 Sept. | Patchy rain possible | 18° /11° | 0.9 mm | 5 | |
| 5 Sept. | Light rain shower | 17° /12° | 1.4 mm | 5 | |
| 6 Sept. | Partly cloudy | 18° /12° | 0 mm | 5 | |
| 7 Sept. | Cloudy | 18° /10° | 0 mm | 5 | |
| 8 Sept. | Mist | 19° /11° | 0 mm | 5 | |
| 9 Sept. | Partly cloudy | 20° /12° | 0.7 mm | 6 | |
| 10 Sept. | Overcast | 21° /13° | 0 mm | 5 | |
| 11 Sept. | Partly cloudy | 18° /12° | 2.5 mm | 5 | |
| 12 Sept. | Fog | 17° /11° | 0.7 mm | 4 | |
| 13 Sept. | Mist | 14° /10° | 3.9 mm | 3 | |
| 14 Sept. | Cloudy | 12° /6° | 1.9 mm | 3 | |
| 15 Sept. | Overcast | 12° /6° | 0 mm | 3 | |
| 16 Sept. | Light rain shower | 13° /5° | 3.5 mm | 4 | |
| 17 Sept. | Light rain shower | 12° /7° | 9.4 mm | 3 | |
| 18 Sept. | Overcast | 12° /6° | 0 mm | 3 | |
| 19 Sept. | Light rain | 15° /7° | 3.7 mm | 4 | |
| 20 Sept. | Light rain shower | 14° /7° | 2.2 mm | 3 | |
| 21 Sept. | Light rain | 10° /5° | 2.6 mm | 4 | |
| 22 Sept. | Overcast | 14° /7° | 0.1 mm | 3 | |
| 23 Sept. | Light rain shower | 12° /8° | 8 mm | 3 | |
| 24 Sept. | Light rain shower | 13° /7° | 3.5 mm | 3 | |
| 25 Sept. | Light rain | 14° /8° | 2.2 mm | 4 | |
| 26 Sept. | Patchy rain possible | 13° /8° | 1.5 mm | 3 | |
| 27 Sept. | Patchy rain possible | 14° /6° | 13.3 mm | 4 | |
| 28 Sept. | Patchy rain possible | 10° /6° | 0.4 mm | 3 | |
| 29 Sept. | Light drizzle | 11° /6° | 0.9 mm | 3 | |
| 30 Sept. | Light rain shower | 11° /7° | 3.4 mm | 3 | |
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Important Notice
Our weather forecast for North Ostrobothnia 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 North Ostrobothnia forecast closer to your planned date for the most up-to-date weather information.
North Ostrobothnia in September - FAQ
What are the expected maximum and minimum temperatures in North Ostrobothnia during September?
During September, expect a variety of temperatures with highs around 14° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in North Ostrobothnia during September?
Moderate rainfall is anticipated in North Ostrobothnia during September, with a total of 81.9 mm spread over approximately 17 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in North Ostrobothnia during September?
The average wind speed in North Ostrobothnia during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to North Ostrobothnia in September?
As you prepare for your trip to North Ostrobothnia 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 North Ostrobothnia, 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
September rainfall patterns in North Ostrobothnia
Explore the daily rainfall trends and prepare for North Ostrobothnias September weather 💧
UV exposure in North Ostrobothnia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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