April weather forecastNynäshamn, Sweden
April
Weather in April
Sea temperature
In Nynäshamn, Sweden, the average seawater temperature in April is 3.2°C (37.8°F).Note: Under swimming conditions, this represents an immediate threat to life. Control over breathing is lost instantaneously, complicating thought processes. A specialized swimsuit is indispensable to conserve thermal energy.
Daylight
In Nynäshamn, the average length of the day in April is 14h and 30min.On the first day of the month, sunrise is at 06:13 and sunset at 19:30. On the last day of April, sunrise is at 04:52 and sunset at 20:38 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
In April, the average sea temperature in Nynäshamn is 3.2°C (37.8°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.
In Nynäshamn, Sweden, the average day length in April is 14h and 30min.
On the first day of April, sunrise is at 06:13 and sunset at 19:30. On the last day of the month, sunrise is at 04:52 and sunset at 20:38 CEST.
Average sea temperature in April
Nynäshamn, Sweden
- Average sea temperature in April: 3.2°C
The best month for swimming (with the highest average sea temperature) is August (18.7°C).
The coldest month (with the lowest average sea temperature) is February (1°C).
Average daylight in April
Nynäshamn, Sweden
- Average daylight in April: 14h and 30min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).





