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Climate and monthly weather forecast
The best time to visit Aioi
The best months for a swim in Aioi, Japan, are July through September, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.
Weather in January
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. Weather in January »
Weather in February
February and March, with an average sea temperature of 13.8°C (56.8°F), are months with the coldest seawater in Aioi, Japan. Note: If planning to swim in 13.8°C (56.8°F) under 10°C (50°F), wear a protective suit. Weather in February »
Weather in March
February and March, with an average sea temperature of 13.8°C (56.8°F), are months with the coldest seawater in Aioi, Japan. Note: Diving into 13.8°C (56.8°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation. Weather in March »
Weather in April
In Aioi, Japan, in April, the average water temperature is 15.3°C (59.5°F). Note: For the majority, swimming in water with a temperature of 15.3°C (59.5°F) is not enjoyable. Weather in April »
Weather in May
In May, the average sea temperature in Aioi, Japan, is 18.1°C (64.6°F). Note: Swimming is not a pleasant activity for most individuals in 18.1°C (64.6°F). Weather in May »
Weather in June
In Aioi, Japan, in June, the average water temperature is 22.2°C (72°F). Note: If cold is not your friend, swimming at 22.2°C (72°F) might be daunting. Weather in June »
Weather in July
An excellent water temperature of 25.8°C (78.4°F) makes July in Aioi, Japan, a prime for swimming and other water activities. In July, the average sea temperature is 25.8°C (78.4°F). Note: Water activities including swimming and diving are pleasurable in temperatures between 25°C (77°F) and 29°C (84.2°F), ensuring comfort and enjoyment for extended time frames. Weather in July »
Weather in August
The perfect water temperature of 27.4°C (81.3°F) makes August a great period for swimming and other water activities in Aioi, Japan. August is the month with the warmest seawater, with an average sea temperature of 27.4°C (81.3°F). Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities. Weather in August »
Weather in September
The ideal sea water temperature of 26.1°C (79°F) makes September in Aioi, Japan, the best time for swimming and other water activities. In Aioi, the average seawater temperature in September is 26.1°C (79°F). Note: For activities in the water such as swimming or diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal for prolonged enjoyment without discomfort. Weather in September »
Weather in October
In Aioi, Japan, the average seawater temperature in October is 23.3°C (73.9°F). Note: When considering a person's aversion to cold, factors like sunshine, wind, and atmospheric temperature are key. Weather in October »
Weather in November
In Aioi, Japan, the average seawater temperature in November is 20.8°C (69.4°F). Note: In 20.8°C (69.4°F), swimming is not an enjoyable activity for most. Weather in November »
Weather in December
In Aioi, Japan, in December, the average water temperature is 17.5°C (63.5°F). Note: For most individuals, swimming in 17.5°C (63.5°F) is not enjoyable. Weather in December »
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
What are the months with the coldest sea water in Aioi?
February and March, with an average sea temperature of 13.8°C (56.8°F), are months with the coldest seawater in Aioi.
When are the longest days in Aioi?
With an average of 14h and 30min of daylight, June has the longest days of the year in Aioi, Japan.
When is the sea warmest in Aioi?
With an average sea temperature of 27.4°C (81.3°F), August is the month with the warmest seawater.
What is the month with the shortest days in Aioi?
With an average of 9h and 54min of daylight, December has the shortest days of the year in Aioi, Japan.
Is there Daylight Saving Time (DST) in Aioi?
Aioi, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average sea temperature
Aioi, Japan
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
Aioi, Japan
- Average daylight in January:
10h and 1min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
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).
