April
Weather in April
Sea temperature
In Östhammar, Sweden, the average seawater temperature in April is 1.7°C (35.1°F).Note: During swimming activities, this situation is lethal and fraught with danger. The frigid water triggers acute discomfort and swift hyperventilation. A specialized swimsuit is necessary to reduce thermal harm.
Daylight
The average length of the day in April in Östhammar is 14h and 38min.On the first day of the month, sunrise is at 06:09 and sunset at 19:31. On the last day of April, sunrise is at 04:43 and sunset at 20:43 CEST.
Updated: Feb 2, 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 April in Östhammar?
In Östhammar, the average seawater temperature in April is 1.7°C (35.1°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.
How many hours of daylight does Östhammar have in April?
In April, the average day length is 14h and 38min.
What time are sunrise and sunset in April in Östhammar?
In April, on the first day of the month, sunrise is at 06:09 and sunset at 19:31. On the last day of the month, sunrise is at 04:43 and sunset at 20:43 CEST.
Average sea temperature in April
Östhammar, Sweden
- Average sea temperature in April: 1.7°C
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is February (0.1°C).
Average daylight in April
Östhammar, Sweden
- Average daylight in April: 14h and 4min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
