Kursiu Nerija has a seaside climate, which is greatly influenced by the Baltic Sea.
The annual amount of radiation in the spit is 90 kcal/cm².
The sun shines at an average of 1982 hours per year, which is 39% of the possible sun-shining period. NPKN has the largest number of sunny days in Lithuania.
West and south winds are prevailing in the spit. The average speed of the wind is 5,5 m/s during the whole year. Very strong, storm winds appears every year and they blow about 20 average days a year in total.
The warming effect of the sea for Kursiu Nerija is stronger (up to 3° C) than in the eastern part of Lithuania. Because of the influence of the sea, autumn and winter are warmer than spring - the temperature differs from the eastern regions by 3 -3.5°.
The air is very humid in the Curonian Spit in winter - up to 82% and 76% in spring. Fog is very common here - 66 misty days a year.
The precipitation in Kursiu Nerija amounts to 643 mm per year. There are about 170-180 rainy or snowy days in the spit per year. 75% of the annual amount of precipitation falls during a warm season. The snow in Kursiu Nerija appears at the end of November; constant snow covering is formed at the end of December or at the beginning of January, which is 10 or 15 days later than in other regions of Lithuania.
