Hokkaido (Sapporo)
September
Weather in Hokkaido for September 2025
Your guide to Hokkaido weather in September - trends and predictions
In general, the average temperature in Hokkaido at the beginning of September is 23.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.9 °C by the end of September.
Expect significant rainfall in Hokkaido during September, with an average of 17 rainy days.
Is September a good time to visit Hokkaido? check out the best time to travel to Hokkaido page.
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13
Dry days
17
Rainy days
0
Snow days
21°/13°
Temperatures
13 km/h
Avg max wind
81 %
Avg humidity
Hokkaido in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  24° | 3  25° | 4 24° | 5 25° | 6 22° | 7 21° |
| 8 24° | 9  24° | 10 24° | 11  23° | 12 23° | 13  24° | 14  19° |
| 15 20° | 16 21° | 17 22° | 18 24° | 19 22° | 20 19° | 21 15° |
| 22 18° | 23 17° | 24 19° | 25 18° | 26 19° | 27 20° | 28  18° |
| 29 19° | 30 19° |
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Temperatures trend during September in Hokkaido
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 24° /15° | 10.4 mm | 6 | |
| 2 Sept. | Moderate rain at times | 24° /15° | 3.3 mm | 5 | |
| 3 Sept. | Sunny | 25° /13° | 0 mm | 7 | |
| 4 Sept. | Light rain shower | 24° /12° | 1.5 mm | 6 | |
| 5 Sept. | Light rain shower | 25° /15° | 2.6 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 22° /16° | 14.1 mm | 5 | |
| 7 Sept. | Patchy rain possible | 21° /12° | 0.6 mm | 6 | |
| 8 Sept. | Sunny | 24° /11° | 0 mm | 7 | |
| 9 Sept. | Partly cloudy | 24° /15° | 0 mm | 6 | |
| 10 Sept. | Light rain shower | 24° /15° | 0.9 mm | 5 | |
| 11 Sept. | Overcast | 23° /15° | 1.7 mm | 5 | |
| 12 Sept. | Moderate rain at times | 23° /15° | 1.8 mm | 5 | |
| 13 Sept. | Fog | 24° /13° | 1.1 mm | 6 | |
| 14 Sept. | Moderate rain | 19° /10° | 9.4 mm | 5 | |
| 15 Sept. | Sunny | 20° /11° | 17.1 mm | 5 | |
| 16 Sept. | Overcast | 21° /10° | 0 mm | 6 | |
| 17 Sept. | Overcast | 22° /13° | 0.3 mm | 5 | |
| 18 Sept. | Fog | 24° /15° | 1.4 mm | 5 | |
| 19 Sept. | Patchy rain possible | 22° /14° | 0.2 mm | 5 | |
| 20 Sept. | Patchy rain possible | 19° /12° | 1.5 mm | 4 | |
| 21 Sept. | Patchy rain possible | 15° /9° | 0.8 mm | 4 | |
| 22 Sept. | Patchy rain possible | 18° /8° | 0.2 mm | 4 | |
| 23 Sept. | Patchy rain possible | 17° /7° | 0.5 mm | 4 | |
| 24 Sept. | Partly cloudy | 19° /7° | 0 mm | 5 | |
| 25 Sept. | Patchy rain possible | 18° /8° | 0.2 mm | 4 | |
| 26 Sept. | Patchy rain possible | 19° /11° | 3.1 mm | 4 | |
| 27 Sept. | Patchy rain possible | 20° /12° | 1.1 mm | 5 | |
| 28 Sept. | Heavy rain | 18° /13° | 32.7 mm | 4 | |
| 29 Sept. | Patchy rain possible | 19° /10° | 0.6 mm | 5 | |
| 30 Sept. | Partly cloudy | 19° /9° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Hokkaido 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 Hokkaido forecast closer to your planned date for the most up-to-date weather information.
Hokkaido in September - FAQ
What are the expected maximum and minimum temperatures in Hokkaido during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Hokkaido during September?
Significant rainfall exceeding 146.9 mm is expected in Hokkaido during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hokkaido during September?
The average wind speed in Hokkaido during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Hokkaido in September?
As you prepare for your trip to Hokkaido 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 Hokkaido, 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 Hokkaido
Explore the daily rainfall trends and prepare for Hokkaidos September weather 💧
UV exposure in Hokkaido during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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