September weather forecast
Aomori, Japan

September signals the gradual transition from summer toward cooler fall temperatures in Aomori. The vibrant summer colors begin to give way to the first hints of autumn hues. Even though temperatures drop to a comfortable 22°C (71.6°F), the sea remains warm, making it perfect for a late-summer dip. Occasional rain showers freshen the landscape and add a crispness to the air. The city starts to calm down after the hubbub of peak summer, and a quieter, more tranquil atmosphere sets in.

Temperature

Aomori's progression into September includes a drop in the average high-temperature, from a warm 27°C (80.6°F) in August to a pleasant 22°C (71.6°F). Aomori observes an average nighttime low-temperature of 13°C (55.4°F) during the month of September.

Rainfall

In September, the rain falls for 19 days. Throughout September, 144mm (5.67") of precipitation is accumulated. In Aomori, during the entire year, the rain falls for 261 days and collects up to 1375mm (54.13") of precipitation.

Sea temperature

In Aomori, the average seawater temperature in September is 22.6°C (72.7°F).
Note: Considering one's resistance to cold, elements like sunshine, wind, and the prevailing temperature matter when taking a swim in 22.6°C (72.7°F) waters. (For comparison, the Olympic swimming standard is set between 25°C (77°F) and 28°C (82.4°F).)

Daylight

In Aomori, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 05:04 and sunset at 18:09. On the last day of the month, sunrise is at 05:32 and sunset at 17:21 JST.

Sunshine

The average sunshine in September in Aomori is 5h.

UV index

The average daily maximum UV index in September in Aomori is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index of 7 during September leads to these instructions:
Ward off overexposure. Defence against solar harm is crucial. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Warning! The Sun's UV rays intensify with reflections from sand and water.