April weather forecast
Olonkin City, Svalbard and Jan Mayen

April brings a fresh onset of extended daylight to Olonkin City, a noticeable upturn from March. The city continues to set itself free of the frosty weather as the temperature inches higher. Rainfall registers a slight downturn from the March status, hinting at drier days. The sea, too, starts to retain some warmth after thawing from the winter freeze. May stands on the horizon, bracing Olonkin City for further escalation in temperature, daylight, and sea warmth, while rainfall remains relatively consistent.

Temperature

In April, Olonkin City experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from -5°C (23°F) in March to a still subzero cold -3°C (26.6°F). Nighttime temperature lowers to an average of -9°C (15.8°F) in April.

Rainfall

In Olonkin City, Svalbard and Jan Mayen, during April, the rain falls for 15 days and regularly aggregates up to 51mm (2.01") of precipitation. Throughout the year, in Olonkin City, there are 205 rainfall days, and 797mm (31.38") of precipitation is accumulated.

Sea temperature

January through April, with an average sea temperature of 1°C (33.8°F), are months with the coldest seawater in Olonkin City.
Note: In the realm of swimming, this is life-threatening and fraught with danger. The cold water triggers intense discomfort and leads to swift hyperventilation. Donning a specialized swimsuit is essential to curb thermal harm.

Daylight

In April, the average length of the day is 16h and 35min.
On the first day of the month, sunrise is at 07:30 and sunset at 21:46. On the last day of April, in Olonkin City, sunrise is at 04:50 and sunset at 00:13 CEST.

Sunshine

In April, the average sunshine in Olonkin City is 4h.

UV index

In April, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 1 during April translates into these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.