expatwhy.

Split weather by month

Split runs from about 8°C in January to 29°C in August, with September the wettest month at 203 mm.

warmest month

August

29°C

coolest month

January

8°C

wettest month

September

203 mm

worst air month

March

15 µg/m³

The whole year, month by month.

Monthly climate normals for Split
MonthAvg tempRainSunPM2.5
January8°C126 mm208 h12
February11°C125 mm220 h10
March12°C175 mm249 h15
April16°C57 mm350 h11
May19°C130 mm367 h7
June24°C122 mm396 h9
July28°C10 mm428 h6
August29°C50 mm392 h8
September21°C203 mm291 h6
October18°C147 mm286 h6
November12°C103 mm236 h9
December8°C129 mm177 h14

About 3,600 hours of sun a year. Roughly 139 rainy days a year.

These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.