Hachijo Weather in September

September in Hachijo brings high temperatures, with daytime highs of 28°C (82°F) and nights around 25°C (77°F). It's part of the rainy season, with 243 mm (9.6 in) of rainfall on average, so an umbrella or poncho is a good idea.

Rainfall in Hachijo in September

As part of the rainy season, Hachijo sees around 18 days of rain in September, with an average of 243 mm (9.6 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.

Temperature in Hachijo in September

Daytime temperatures in Hachijo reach 28°C (82°F) in September, dropping to 25°C (77°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about.

Sunshine in Hachijo in September

The area enjoys a balanced 142 hours of sunlight, ensuring it's neither too rainy nor too sunny.

Wind Speed in Hachijo in September

Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in September

The water is 26°C (79°F) this month, warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

If your ideal day consists of dry skies and pleasant temperatures, April, May, July and August typically offer the best circumstances for Hachijo.

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Check the conditions for any month of the year.

• January
• February
• March
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• 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 Hachijo's climate page.

Hachijo Temperature in September

Min Temperature 25°C (77°F)  

Max Temperature 28°C (82°F)  

Water Temperature 26°C (79°F) *  

Chance of Rain 61%  

Precipitation 243 mm (9.6 in)  

Rainy days 18 days  

Humidity 86% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 142 hours *  

Percentage Sunshine 40% *  

What to Wear in Hachijo in September

Warm but pleasant conditions in Hachijo in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 26°C (79°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Hachijo in September

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

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 Hachijo's climate page.

More climate data for Hachijo

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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