Weather in Otaru for September 2027
In general, the average temperature in Otaru at the beginning of September is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.3 °C by the end of September.
The climate of Otaru in September is notably wet, with an average of 12 rainy days, and a total of 97.7 mm of precipitation.
Is September a good time to visit Otaru? check out the best time to travel to Otaru page.
✨ Is September a good time to visit Otaru? – Ask the AI Weatherman
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Otaru Weather September
Temperatures trend during September in Otaru
September weather in Otaru day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 24° /17° | 1.3 mm | 4 | |
| 2 Sept. |  Light rain | 22° /16° | 3.9 mm | 4 | |
| 3 Sept. | Light rain | 22° /16° | 3.9 mm | 4 | |
| 4 Sept. | Light rain | 23° /16° | 3.4 mm | 6 | |
| 5 Sept. | Patchy rain possible | 24° /16° | 1.4 mm | 6 | |
| 6 Sept. |  Moderate or heavy rain shower | 23° /17° | 5.9 mm | 5 | |
| 7 Sept. | Patchy rain possible | 22° /15° | 2 mm | 4 | |
| 8 Sept. |  Sunny | 24° /15° | 0.2 mm | 5 | |
| 9 Sept. |  Cloudy | 22° /15° | 0.8 mm | 5 | |
| 10 Sept. |  Overcast | 24° /16° | 0.6 mm | 6 | |
| 11 Sept. | Patchy rain possible | 23° /15° | 2 mm | 5 | |
| 12 Sept. | Patchy rain possible | 23° /15° | 2.4 mm | 5 | |
| 13 Sept. | Patchy rain possible | 24° /14° | 2.1 mm | 4 | |
| 14 Sept. | Light rain | 21° /14° | 9.8 mm | 4 | |
| 15 Sept. | Light rain | 20° /13° | 5.3 mm | 5 | |
| 16 Sept. | Overcast | 21° /13° | 0 mm | 5 | |
| 17 Sept. | Light rain shower | 21° /14° | 0.7 mm | 5 | |
| 18 Sept. |  Partly cloudy | 21° /14° | 0.9 mm | 5 | |
| 19 Sept. | Patchy rain possible | 20° /14° | 0.3 mm | 4 | |
| 20 Sept. |  Moderate rain | 19° /13° | 11.3 mm | 3 | |
| 21 Sept. | Light rain | 17° /11° | 7.1 mm | 4 | |
| 22 Sept. | Patchy rain possible | 18° /11° | 1.8 mm | 4 | |
| 23 Sept. | Light rain shower | 18° /11° | 0.3 mm | 4 | |
| 24 Sept. | Light rain | 20° /10° | 4.5 mm | 4 | |
| 25 Sept. | Light rain | 18° /11° | 2.9 mm | 4 | |
| 26 Sept. | Patchy rain possible | 20° /12° | 1.2 mm | 4 | |
| 27 Sept. | Patchy rain possible | 21° /13° | 2.2 mm | 4 | |
| 28 Sept. | Moderate rain | 20° /13° | 15.9 mm | 4 | |
| 29 Sept. | Light rain | 19° /12° | 3.2 mm | 4 | |
| 30 Sept. | Cloudy | 20° /12° | 0.7 mm | 4 | |
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Otaru weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 24°/17° | 21°/14° | 14°/7° |
| Rainfall | 130 mm | 98 mm | 139 mm |
| Wind | 12.9 km/h | 16.3 km/h | 21.1 km/h |
| Humidity | 83% | 75% | 74% |
| Rainy days | 16 days | 12 days | 16 days |
| Dry days | 15 days | 18 days | 15 days |
Planning a trip to Otaru? Discover the best time to visit
Otaru in September - FAQ
What are the expected maximum and minimum temperatures in Otaru during September?
How much rainfall should be expected in Otaru during September?
What are the typical wind conditions in Otaru during September?
September rainfall patterns in Otaru
UV exposure in Otaru during September
What to pack to Otaru in September?
Mild · highs around 21 °C, frequent showers
As you prepare for your trip to Otaru 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 Otaru, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
Where is Otaru?Get accurate weather forecasts for Otaru, located at latitude 43.189 and longitude 141.002. Stay updated with localized weather information tailored for Otaru.