April weather forecastHasaki, Japan
April
Weather in April
Sea temperature
In Hasaki, Japan, the average seawater temperature in April is 16.9°C (62.4°F).Note: Most people do not enjoy swimming in water that is 16.9°C (62.4°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).
Daylight
The average length of the day in April is 13h and 6min.On the first day of the month, sunrise is at 05:22 and sunset at 17:58. On the last day of April, sunrise is at 04:45 and sunset at 18:22 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
In April, the average sea temperature is 16.9°C (62.4°F). For most, swimming in 16.9°C (62.4°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
The average day length in April is 13h and 6min.
On the first day of April, sunrise is at 05:22 and sunset at 17:58. On the last day of the month, sunrise is at 04:45 and sunset at 18:22 JST.
Average sea temperature in April
Hasaki, Japan
- Average sea temperature in April: 16.9°C
The best month for swimming (with the highest average sea temperature) is August (25.2°C).
The coldest month (with the lowest average sea temperature) is February (14.7°C).
Average daylight in April
Hasaki, Japan
- Average daylight in April: 13h and 6min
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 48min).





