Climate and monthly weather forecastHitachi, Japan
Climate and monthly weather forecast
Weather in January
In January, the average sea temperature in Hitachi, Japan, is 13.7°C (56.7°F). Note: Danger awaits those who swim in 13.7°C (56.7°F) without protection. Weather in January »Weather in February
February is the month with the coldest seawater in Hitachi, Japan, with an average sea temperature of 10.8°C (51.4°F). Note: It is life-risking to swim in 10.8°C (51.4°F). Weather in February »Weather in March
In Hitachi, Japan, in March, the average water temperature is 11.2°C (52.2°F). Note: Staying in 11.2°C (52.2°F) waters for just a few moments at 13°C (55.4°F) can be harrowing, and below 10°C (50°F) poses breathing and cold shock risks, depending on individual tolerance. Weather in March »Weather in April
In April, the average sea temperature in Hitachi, Japan, is 13.8°C (56.8°F). Note: Swimming at temperatures less than 10°C (50°F) in 13.8°C (56.8°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. Weather in April »Weather in May
In Hitachi, Japan, the average seawater temperature in May is 15.4°C (59.7°F). Note: For the majority of people, swimming in water at 15.4°C (59.7°F) is not enjoyable. Weather in May »Weather in June
In Hitachi, Japan, in June, the average water temperature is 18.6°C (65.5°F). Note: In water of 18.6°C (65.5°F), the majority of people do not enjoy swimming. Weather in June »Weather in July
In July, the average sea temperature in Hitachi, Japan, is 21.7°C (71.1°F). Note: The majority of individuals do not enjoy swimming in water that is 21.7°C (71.1°F). Weather in July »Weather in August
With an average sea temperature of 23.4°C (74.1°F), August is the month with the warmest seawater in Hitachi, Japan. Note: If you're wary of the cold, the surrounding conditions—sunshine, wind, and air temperature become crucial when swimming in 23.4°C (74.1°F) waters. Weather in August »Weather in September
In Hitachi, Japan, in September, the average water temperature is 23°C (73.4°F). Note: Factor in your tolerance to cold, the sunshine, the wind, and the air's warmth, and a swim in 23°C (73.4°F) might be tempting. Weather in September »Weather in October
In October, the average sea temperature in Hitachi, Japan, is 19.4°C (66.9°F). Note: In 19.4°C (66.9°F), swimming is not an enjoyable activity for most. Weather in October »Weather in November
In November, the average sea temperature in Hitachi, Japan, is 16.9°C (62.4°F). Note: The majority find it unenjoyable to swim in 16.9°C (62.4°F). Weather in November »Weather in December
In Hitachi, Japan, in December, the average water temperature is 14°C (57.2°F). Note: In 14°C (57.2°F), even brief exposure to 13°C (55.4°F) feels biting, and anything less than 10°C (50°F) risks cold shock and impaired breathing, considering one's health. 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
With an average sea temperature of 10.8°C (51.4°F), February is the month with the coldest seawater in Hitachi.
The month with the longest days is June, with an average of 14h and 36min of daylight.
The month with the warmest seawater in Hitachi, Japan, is August, with an average sea temperature of 23.4°C (74.1°F).
The month with the shortest days in Hitachi is December, with an average of 9h and 42min of daylight.
Hitachi, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average sea temperature
Hitachi, Japan
The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (10.8°C).
Average daylight
Hitachi, Japan
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).








