Sendai
September
Weather in Sendai for September 2025
Your guide to Sendai weather in September - trends and predictions
In general, the average temperature in Sendai at the beginning of September is 27.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °C by the end of September.
The climate of Sendai in September is notably wet, with an average of 15 rainy days.
Is September a good time to visit Sendai? check out the best time to travel to Sendai page.
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Temperatures
Rain 🌧️
More
15
Dry days
15
Rainy days
0
Snow days
25°/20°
Temperatures
13 km/h
Avg max wind
81 %
Avg humidity
Sendai in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2 30° | 3  25° | 4 25° | 5  26° | 6 31° | 7 27° |
| 8 24° | 9 26° | 10 27° | 11  31° | 12 30° | 13 29° | 14 23° |
| 15  30° | 16 23° | 17 28° | 18 28° | 19 24° | 20 30° | 21 22° |
| 22  18° | 23 20° | 24 19° | 25 19° | 26 25° | 27 25° | 28 24° |
| 29 19° | 30 20° |
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Temperatures trend during September in Sendai
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 | 27° /23° | 0.4 mm | 6 | |
| 2 Sept. | Light rain shower | 30° /22° | 7.4 mm | 7 | |
| 3 Sept. | Partly cloudy | 25° /20° | 0.4 mm | 7 | |
| 4 Sept. | Partly cloudy | 25° /19° | 0.1 mm | 7 | |
| 5 Sept. | Sunny | 26° /19° | 0 mm | 7 | |
| 6 Sept. | Patchy rain possible | 31° /21° | 0 mm | 7 | |
| 7 Sept. | Patchy rain possible | 27° /22° | 0.2 mm | 6 | |
| 8 Sept. | Light rain shower | 24° /22° | 2.8 mm | 5 | |
| 9 Sept. | Light rain shower | 26° /21° | 0.7 mm | 6 | |
| 10 Sept. | Patchy rain possible | 27° /22° | 0.3 mm | 6 | |
| 11 Sept. | Patchy light rain | 31° /23° | 2.1 mm | 7 | |
| 12 Sept. | Light rain shower | 30° /23° | 0.3 mm | 7 | |
| 13 Sept. | Light rain shower | 29° /22° | 3 mm | 6 | |
| 14 Sept. | Light drizzle | 23° /20° | 2.2 mm | 5 | |
| 15 Sept. | Moderate rain | 30° /22° | 12.8 mm | 7 | |
| 16 Sept. | Light drizzle | 23° /20° | 3.4 mm | 5 | |
| 17 Sept. | Patchy rain possible | 28° /19° | 0 mm | 6 | |
| 18 Sept. | Light rain | 28° /21° | 3.8 mm | 6 | |
| 19 Sept. | Light rain shower | 24° /22° | 5.1 mm | 5 | |
| 20 Sept. | Patchy rain possible | 30° /21° | 0.6 mm | 7 | |
| 21 Sept. | Light rain shower | 22° /15° | 27.9 mm | 5 | |
| 22 Sept. | Heavy rain | 18° /15° | 36.9 mm | 4 | |
| 23 Sept. | Light rain shower | 20° /16° | 1.5 mm | 5 | |
| 24 Sept. | Patchy rain possible | 19° /14° | 0.1 mm | 4 | |
| 25 Sept. | Light rain shower | 19° /14° | 2.8 mm | 4 | |
| 26 Sept. | Partly cloudy | 25° /17° | 0 mm | 7 | |
| 27 Sept. | Light rain shower | 25° /19° | 4.8 mm | 6 | |
| 28 Sept. | Patchy rain possible | 24° /20° | 0.1 mm | 5 | |
| 29 Sept. | Light rain shower | 19° /18° | 2 mm | 4 | |
| 30 Sept. | Patchy rain possible | 20° /17° | 0.1 mm | 5 | |
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Important Notice
Our weather forecast for Sendai 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 Sendai forecast closer to your planned date for the most up-to-date weather information.
Sendai in September - FAQ
What are the expected maximum and minimum temperatures in Sendai during September?
During September, expect a variety of temperatures with highs around 25° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sendai during September?
Significant rainfall exceeding 122.03 mm is expected in Sendai during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sendai during September?
The average wind speed in Sendai during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Sendai in September?
As you prepare for your trip to Sendai 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 Sendai, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Sendai
Explore the daily rainfall trends and prepare for Sendais September weather 💧
UV exposure in Sendai during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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