January
Weather in January
Sea temperature
In Aioi, Japan, in January, the average water temperature is 14.8°C (58.6°F).Note: Unprotected swimming in 14.8°C (58.6°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
Daylight
In January, the average length of the day in Aioi is 10h and 7min.On the first day of the month, sunrise is at 07:09 and sunset at 17:01. On the last day of January, sunrise is at 07:01 and sunset at 17:29 JST.
Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is the water in January in Aioi?
In Aioi, Japan, in January, the average water temperature is 14.8°C (58.6°F). Swimming in 14.8°C (58.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
What is the average length of the day in January in Aioi?
In January, the average day length in Aioi, Japan, is 10h and 7min.
When is the sunrise / sunset in January in Aioi?
In January, on the first day of the month, sunrise is at 07:09 and sunset at 17:01. On the last day of the month, sunrise is at 07:01 and sunset at 17:29 JST.
Average sea temperature in January
Aioi, Japan
- Average sea temperature in January: 14.8°C
The best month for swimming (with the highest average sea temperature) is August (27.4°C).
The coldest months (with the lowest average sea temperature) are February and March (13.8°C).
Average daylight in January
Aioi, Japan
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
