Shiojiri Weather in September

During September, Shiojiri experiences high daytime temperatures of 24°C (75°F) and cooler nights around 14°C (57°F). As part of the summer season, expect quite a bit of rainfall. Around 205 mm (8.1 in) is typical.

Rainfall in Shiojiri in September

Historically, the month has about 19 days of rain, averaging 205 mm (8.1 in) in total. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Shiojiri in September

September in Shiojiri sees highs of 24°C (75°F) and lows of 14°C (57°F) overnight. Experience the summer season in September. This kind of day-to-night contrast is typical for this time of year. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Shiojiri in September

The area enjoys a moderate level of sunlight, with around 142 hours. It's a good balance between sunny and cloudy days.

If you prefer enjoying temperate temperatures and rain-free days, May and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit Japan, check out our Shiojiri's climate page.

Shiojiri Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 62%  

Precipitation 205 mm (8.1 in)  

Rainy days 19 days  

Humidity 74% *  

Sunshine 142 hours *  

Percentage Sunshine *  

* Data from: Nagano, Japan (61 KM, 38 Miles).

What to Wear in Shiojiri in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Shiojiri in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Camping

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Shiojiri's climate page.

More climate data for Shiojiri

Temperature Rainfall Sunshine Humidity

See the full Shiojiri climate overview or explore weather in Japan.