Weather in Yamagata for September 2026
Until now, September 2026 in Yamagata is cooler than usual, with temperatures averaging 23 °C, this is 3.9 °C below the typical seasonal average.
The forecast for the next days in Yamagata predicts a temperature of 22 °C, which is cooler than the historical average.
In general, the average temperature in Yamagata at the beginning of September is 27.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.4 °C by the end of September.
Yamagata experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 187.4 mm.
Is September a good time to visit Yamagata? check out the best time to travel to Yamagata page.
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Yamagata Weather September
Temperatures trend during September in Yamagata
September weather in Yamagata day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 30° /19° | 0.6 mm | 5 | |
| 2 Sept. | Light rain shower | 32° /19° | 4.3 mm | 6 | |
| 3 Sept. | Light rain shower | 27° /18° | 8.3 mm | 5 | |
| 4 Sept. | Light rain shower | 25° /17° | 11.2 mm | 5 | |
| 5 Sept. |  Moderate or heavy rain shower | 27° /17° | 13.2 mm | 6 | |
| 6 Sept. | Patchy rain possible | 26° /16° | 8.9 mm | 5 | |
| 7 Sept. |  Fog | 26° /16° | 20.2 mm | 5 | |
| 8 Sept. | Light rain shower | 23° /18° | 16.7 mm | 4 | |
| 9 Sept. | Light rain shower | 26° /19° | 15.7 mm | 5 | |
| 10 Sept. | Moderate or heavy rain shower | 28° /19° | 10.5 mm | 6 | |
| 11 Sept. | Mist | 17° /14° | 4 mm | 1.3 | |
| 12 Sept. |  Overcast | 25° /15° | 0 mm | 6.9 | |
| 13 Sept. | Mist | 25° /17° | 0.1 mm | 4.2 | |
| 14 Sept. | Light rain shower | 28° /18° | 12.4 mm | 7.5 | |
| 15 Sept. | Fog | 18° /16° | 2.9 mm | 1 | |
| 16 Sept. | Fog | 18° /16° | 11.7 mm | 4 | |
| 17 Sept. | Light rain shower | 17° /16° | 14.2 mm | 4 | |
| 18 Sept. | Mist | 20° /17° | 3.1 mm | 4 | |
| 19 Sept. | Mist | 21° /16° | 0.5 mm | 5 | |
| 20 Sept. | Mist | 20° /16° | 2.5 mm | 5 | |
| 21 Sept. | Light rain shower | 19° /17° | 20.6 mm | 4 | |
| 22 Sept. | Overcast | 23° /16° | 0.7 mm | 5 | |
| 23 Sept. | Mist | 29° /16° | 1.9 mm | 7 | |
| 24 Sept. |  Sunny | 28° /21° | 36.8 mm | 7 | |
| 25 Sept. | Patchy rain possible | 21° /11° | 1 mm | 5 | |
| 26 Sept. | Patchy rain possible | 26° /13° | 0.9 mm | 6 | |
| 27 Sept. |  Light drizzle | 23° /15° | 5.5 mm | 5 | |
| 28 Sept. | Light rain shower | 24° /14° | 6.3 mm | 5 | |
| 29 Sept. | Light rain shower | 21° /14° | 3.9 mm | 5 | |
| 30 Sept. | Light rain shower | 21° /13° | 2.9 mm | 5 | |
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Yamagata weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 30°/20° | 25°/17° | 18°/9° |
| Rainfall | 202 mm | 187 mm | 99 mm |
| Wind | 8.3 km/h | 8.2 km/h | 9.9 km/h |
| Humidity | 83% | 86% | 83% |
| Rainy days | 27 days | 23 days | 23 days |
| Dry days | 4 days | 7 days | 8 days |
Planning a trip to Yamagata? Discover the best time to visit
Yamagata in September - FAQ
What are the expected maximum and minimum temperatures in Yamagata during September?
How much rainfall should be expected in Yamagata during September?
What are the typical wind conditions in Yamagata during September?
September rainfall patterns in Yamagata
UV exposure in Yamagata during September
What to pack to Yamagata in September?
Mild & changeable · highs around 25 °C, frequent showers
As you prepare for your trip to Yamagata 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 Yamagata, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Yamagata?Get accurate weather forecasts for Yamagata, located at latitude 38.233 and longitude 140.367. Stay updated with localized weather information tailored for Yamagata.