Iwate (Morioka)
September
Weather in Iwate for September 2026
Your guide to Iwate weather in September - trends and predictions
In general, the average temperature in Iwate at the beginning of September is 27.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.6 °C by the end of September.
Iwate in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 224.7 mm.
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Temperatures
Rain 🌧️
More
13
Dry days
17
Rainy days
0
Snow days
24°/14°
Temperatures
12 km/h
Avg max wind
84 %
Avg humidity
Iwate Weather September
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Temperatures trend during September in Iwate
See the weather trend as well as the moving average line
September weather in Iwate day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Fog | 31° /21° | 1.1 mm | 3 | |
| 2 Sept. |  Light rain shower | 27° /21° | 2.4 mm | 4 | |
| 3 Sept. | Light rain shower | 29° /15° | 6.1 mm | 6 | |
| 4 Sept. |  Overcast | 27° /14° | 0 mm | 6 | |
| 5 Sept. |  Moderate or heavy rain shower | 23° /16° | 15.3 mm | 2 | |
| 6 Sept. | Patchy rain possible | 26° /15° | 0 mm | 6 | |
| 7 Sept. | Light rain shower | 27° /17° | 12.3 mm | 3 | |
| 8 Sept. | Fog | 29° /19° | 15.4 mm | 3 | |
| 9 Sept. | Light rain shower | 25° /18° | 9.8 mm | 1 | |
| 10 Sept. | Moderate or heavy rain shower | 25° /18° | 18.6 mm | 3 | |
| 11 Sept. |  Light rain | 23° /16° | 26.9 mm | 3 | |
| 12 Sept. |  Sunny | 26° /14° | 0 mm | 6 | |
| 13 Sept. | Light rain | 24° /15° | 2.6 mm | 2 | |
| 14 Sept. | Patchy rain possible | 26° /16° | 5.5 mm | 5 | |
| 15 Sept. | Mist | 27° /15° | 0 mm | 5 | |
| 16 Sept. | Mist | 28° /16° | 0 mm | 5 | |
| 17 Sept. | Light rain shower | 25° /18° | 4.7 mm | 1 | |
| 18 Sept. | Moderate or heavy rain shower | 20° /12° | 33.4 mm | 1 | |
| 19 Sept. | Sunny | 22° /10° | 0 mm | 5 | |
| 20 Sept. |  Moderate rain | 19° /12° | 37.6 mm | 2 | |
| 21 Sept. | Patchy rain possible | 21° /12° | 0.2 mm | 4 | |
| 22 Sept. | Patchy rain possible | 21° /10° | 0 mm | 4 | |
| 23 Sept. | Mist | 21° /10° | 0 mm | 4 | |
| 24 Sept. |  Partly cloudy | 21° /9° | 0 mm | 4 | |
| 25 Sept. | Light rain shower | 17° /11° | 13 mm | 1 | |
| 26 Sept. | Patchy rain possible | 24° /14° | 0 mm | 4 | |
| 27 Sept. | Patchy rain possible | 22° /12° | 0 mm | 4 | |
| 28 Sept. | Partly cloudy | 22° /9° | 1.4 mm | 4 | |
| 29 Sept. | Light rain shower | 17° /10° | 18.3 mm | 1 | |
| 30 Sept. | Patchy rain possible | 21° /11° | 0.1 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Iwate 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 Iwate forecast closer to your planned date for the most up-to-date weather information.
Change Month
Iwate weather in September vs August vs October
Compare September weather in Iwate with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| August | September | October | |
|---|---|---|---|
| Weather | Light rain shower | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/18° | 24°/14° | 16°/7° |
| Rainfall | 110 mm | 225 mm | 169 mm |
| Wind | 11.5 km/h | 11.8 km/h | 9.7 km/h |
| Humidity | 81% | 84% | 84% |
| Rainy days | 20 days | 17 days | 20 days |
| Dry days | 11 days | 13 days | 11 days |
Planning a trip to Iwate? Discover the best time to visit
Iwate in September - FAQ
What are the expected maximum and minimum temperatures in Iwate during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Iwate during September?
Significant rainfall exceeding 224.7 mm is expected in Iwate during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Iwate during September?
The average wind speed in Iwate during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Iwate in September?
As you prepare for your trip to Iwate 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 Iwate, 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
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- 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 Iwate
Explore the daily rainfall trends and prepare for Iwates September weather 💧
Typically, Iwate has 17 rainy days in September with a total of 224.7 mm of rainfall.
UV exposure in Iwate during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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