April weather forecast
Fredrikstad, Norway

April commences a discernible change in Fredrikstad, indicating the arrival of spring. Snowfall recedes as temperatures frequently stay above freezing. Despite the relative cold, the sea warms up to 6.4°C (43.5°F), a significant jump from the colder months. The length of daylight continues expanding, coinciding with nature’s revival. April sets the stage for warmer, sunnier days in Fredrikstad.

Temperature

The shift from March to April in Fredrikstad, Norway, is marked by an increase in the average high-temperature, moving from a wintry 4°C (39.2°F) to a frosty 9°C (48.2°F). Fredrikstad, in April, experiences an average temperature of 0°C (32°F) at night.

Rainfall

The months with the least rainfall in Fredrikstad are February and April Rain falls for 12 days and accumulates 42mm (1.65") of rain.

Sea temperature

In April, the average sea temperature in Fredrikstad is 6.4°C (43.5°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

In April, the average length of the day in Fredrikstad is 14h and 32min.
On the first day of April in Fredrikstad, sunrise is at 06:40 and sunset at 19:59. On the last day of the month, sunrise is at 05:18 and sunset at 21:08 CEST.

Sunshine

The average sunshine in April is 6h.

UV index

In Fredrikstad, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 3 during April translates into the following directions:
Be vigilant - Suggestions to stave off sun damage are provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.