Weather in Okayama for September 2026
Until now, September 2026 in Okayama is cooler than usual, with temperatures averaging 27.1 °C, this is 2.4 °C below the typical seasonal average.
Expect cooler weather in the next days in Okayama with the forecast suggesting a temperature of 27.4 °C, lower than the historical average.
In general, the average temperature in Okayama at the beginning of September is 29.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 26.6 °C by the end of September.
Okayama in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 100.5 mm.
Is September a good time to visit Okayama? check out the best time to travel to Okayama page.
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Okayama Weather September
Temperatures trend during September in Okayama
September weather in Okayama day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Thundery outbreaks possible | 31° /26° | 0.8 mm | 8 | |
| 2 Sept. |  Patchy rain possible | 31° /25° | 0.2 mm | 7 | |
| 3 Sept. | Patchy rain possible | 30° /23° | 4.4 mm | 5 | |
| 4 Sept. | Light rain shower | 27° /22° | 29.4 mm | 5 | |
| 5 Sept. |  Partly cloudy | 29° /22° | 6.6 mm | 5 | |
| 6 Sept. |  Sunny | 29° /23° | 1.4 mm | 6 | |
| 7 Sept. | Sunny | 30° /24° | 0.4 mm | 5 | |
| 8 Sept. | Patchy rain possible | 30° /24° | 1.8 mm | 5 | |
| 9 Sept. | Patchy rain possible | 29° /23° | 15.5 mm | 6 | |
| 10 Sept. |  Moderate or heavy rain shower | 30° /23° | 4.8 mm | 6 | |
| 11 Sept. | Moderate or heavy rain shower | 28° /23° | 9.8 mm | 6 | |
| 12 Sept. | Partly cloudy | 31° /23° | 1.9 mm | 7 | |
| 13 Sept. | Sunny | 30° /23° | 4.3 mm | 8.3 | |
| 14 Sept. | Patchy rain possible | 29° /23° | 10 mm | 8.6 | |
| 15 Sept. | Light rain shower | 27° /22° | 10.5 mm | 4.9 | |
| 16 Sept. | Patchy rain possible | 28° /22° | 14.1 mm | 7 | |
| 17 Sept. | Light rain shower | 27° /21° | 11.1 mm | 1.4 | |
| 18 Sept. | Patchy rain possible | 25° /22° | 1.2 mm | 5 | |
| 19 Sept. | Sunny | 29° /22° | 1.7 mm | 7 | |
| 20 Sept. |  Overcast | 27° /22° | 0.5 mm | 6 | |
| 21 Sept. | Overcast | 27° /23° | 0.3 mm | 6 | |
| 22 Sept. | Overcast | 30° /25° | 7 mm | 6 | |
| 23 Sept. | Light rain shower | 28° /25° | 24.8 mm | 6 | |
| 24 Sept. | Patchy rain possible | 25° /19° | 0.4 mm | 6 | |
| 25 Sept. |  Cloudy | 25° /19° | 0 mm | 6 | |
| 26 Sept. | Overcast | 26° /19° | 0 mm | 6 | |
| 27 Sept. | Patchy rain possible | 28° /22° | 0.3 mm | 6 | |
| 28 Sept. | Patchy rain possible | 28° /21° | 0.3 mm | 6 | |
| 29 Sept. | Sunny | 27° /20° | 1.6 mm | 6 | |
| 30 Sept. | Cloudy | 27° /20° | 0.4 mm | 6 | |
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Okayama weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 31°/25° | 29°/23° | 23°/16° |
| Rainfall | 226 mm | 101 mm | 50 mm |
| Wind | 15.2 km/h | 13.7 km/h | 15.5 km/h |
| Humidity | 72% | 73% | 67% |
| Rainy days | 22 days | 18 days | 15 days |
| Dry days | 9 days | 12 days | 16 days |
Planning a trip to Okayama? Discover the best time to visit
Okayama in September - FAQ
What are the expected maximum and minimum temperatures in Okayama during September?
How much rainfall should be expected in Okayama during September?
What are the typical wind conditions in Okayama during September?
September rainfall patterns in Okayama
UV exposure in Okayama during September
What to pack to Okayama in September?
Warm & sunny · highs around 29 °C, frequent showers
As you prepare for your trip to Okayama 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 Okayama, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
🧴 Personal Items
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Where is Okayama?Get accurate weather forecasts for Okayama, located at latitude 34.583 and longitude 133.767. Stay updated with localized weather information tailored for Okayama.