Weather in Hakodate for September 2026
- In general, the average temperature in Hakodate at the beginning of September is 23.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21 °C by the end of September. 
- Hakodate in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 99 mm. 
- Is September a good time to visit Hakodate? check out the best time to travel to Hakodate page. 
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Hakodate Weather September
Temperatures trend during September in Hakodate
September weather in Hakodate day by day
| Date | Weather | Temperatures | Rain | UV | More | 
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 24° /19° | 9.6 mm | 5 | |
| 2 Sept. | Sunny | 24° /18° | 6.9 mm | 6 | |
| 3 Sept. | Patchy rain possible | 23° /18° | 0.3 mm | 6 | |
| 4 Sept. | Overcast | 23° /18° | 1 mm | 5 | |
| 5 Sept. | Light rain shower | 22° /19° | 1.4 mm | 5 | |
| 6 Sept. | Moderate rain at times | 24° /18° | 1.9 mm | 6 | |
| 7 Sept. | Patchy rain possible | 23° /17° | 4.4 mm | 6 | |
| 8 Sept. | Sunny | 23° /17° | 0 mm | 6 | |
| 9 Sept. | Light rain shower | 24° /19° | 2 mm | 5 | |
| 10 Sept. | Patchy rain possible | 24° /19° | 0.1 mm | 5 | |
| 11 Sept. | Patchy rain possible | 23° /19° | 0.7 mm | 5 | |
| 12 Sept. | Overcast | 24° /18° | 5 mm | 6 | |
| 13 Sept. | Partly cloudy | 24° /18° | 2.7 mm | 6 | |
| 14 Sept. | Overcast | 22° /16° | 3.4 mm | 5 | |
| 15 Sept. | Overcast | 22° /16° | 0.9 mm | 5 | |
| 16 Sept. | Overcast | 22° /16° | 0 mm | 5 | |
| 17 Sept. | Patchy rain possible | 23° /17° | 2.1 mm | 5 | |
| 18 Sept. | Moderate or heavy rain shower | 22° /17° | 8.1 mm | 5 | |
| 19 Sept. | Cloudy | 23° /16° | 4.2 mm | 5 | |
| 20 Sept. | Sunny | 21° /13° | 15.3 mm | 5 | |
| 21 Sept. | Partly cloudy | 19° /13° | 2.7 mm | 4 | |
| 22 Sept. | Patchy rain possible | 20° /14° | 4.3 mm | 5 | |
| 23 Sept. | Moderate or heavy rain shower | 20° /15° | 6.9 mm | 5 | |
| 24 Sept. | Patchy rain possible | 20° /14° | 0.4 mm | 5 | |
| 25 Sept. | Patchy rain possible | 21° /15° | 5.4 mm | 5 | |
| 26 Sept. | Patchy rain possible | 22° /16° | 1.7 mm | 5 | |
| 27 Sept. | Patchy rain possible | 21° /16° | 0.1 mm | 5 | |
| 28 Sept. | Partly cloudy | 21° /16° | 9.3 mm | 5 | |
| 29 Sept. | Patchy rain possible | 21° /15° | 1.2 mm | 5 | |
| 30 Sept. | Patchy rain possible | 21° /15° | 4.5 mm | 5 | |
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Hakodate weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible | 
| Temperatures | 24°/20° | 22°/17° | 16°/11° | 
| Rainfall | 245 mm | 99 mm | 118 mm | 
| Wind | 20.4 km/h | 19.1 km/h | 21.7 km/h | 
| Humidity | 87% | 77% | 72% | 
| Rainy days | 29 days | 18 days | 20 days | 
| Dry days | 2 days | 12 days | 11 days | 
Planning a trip to Hakodate? Discover the best time to visit
Hakodate in September - FAQ
What to pack to Hakodate in September?
As you prepare for your trip to Hakodate 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 Hakodate, 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 Hakodate
UV exposure in Hakodate during September
Quick links
Get accurate weather forecasts for Hakodate, located at latitude 41.776 and longitude 140.737. Stay updated with localized weather information tailored for Hakodate.