Honshu water temperature in April

How warm is Honshu water in spring? In April sea water temperature throughout Honshu is not yet warm enough for swimming and does not exceed 20°C. Based on average water temperature observations over the past ten years, the warmest sea in Honshu in April was 16.3°C (in Atami), and the coldest water 7.6°C (in Aomori Shi). To find out the sea temperature today and in the coming days, go to Current sea temperature in Honshu

Honshu sea surface temp in April

Honshu cities and resorts with the values of the average water temperature in April in recent years.
For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a city name. For ease of search, all places are also grouped by the first letter of the name.

To find out what the water temperature was in Honshu any day over a period of the last ten years, select the month

Places with the warmest average sea water temperature in Honshu in April. Also indicated are the maximum and minimum temperatures in April for these locations based on observations over the past 10 years

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Honshu Island

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Our report for Japan is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.