Weather in Split in October

How October compares

October is the 6th warmest month of the year in Split and ranks 114th of 134 destinations we compare for October - see where else is hot in October. Within Croatia it is 2nd of 4 (Croatia in October). Against London's average high of 14.6°C in October, Split is 5.3°C warmer by day and 4.6°C warmer at night.

Daytime and night-time in October

The typical October day in Split peaks at 19.9°C, but that is an average: the warmest 10% of days reach 23.6°C or more. Roughly 1 in 50 days top 25°C. Nights average 13.0°C; one night in ten drops to 8.5°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest October day here reached 27.0°C (1993-10-18) and the coldest night 3.5°C (1997-10-29).

Rain in October

Wet (more than 8 rainy days): about 11 days with 1 mm or more, 137 mm in total. Year to year it varies a lot - the wettest October was 1992 with 284 mm, the driest 1995 with 12 mm. Humidity averages 75%.

Sea temperature in October

The sea averages 20.3°C - bracing (18-22°c). Depending on the year it ranges from 19.7°C to 21.0°C. For the warmest sea here, come in August (24.6°C).

Sunshine and daylight

Around 5.7 hours of sunshine a day (estimated from cloud cover), 10.8 hours of daylight: the sun rises about 07:08 and sets about 18:12 local time in mid-October. Average cloud cover is 47%.

Is October a good time to visit Split?

October is not the strongest month here: mild days and frequent rain. The best months for Split on our scoring are August, July, June; months averaging 25°C or more: Jun, Jul, Aug.

Milder than London, without reliable summer warmth

Split's average daytime high is 5.3°C above London's October average, a useful difference if you want to spend time outdoors without strong heat. A light layer over a T-shirt gives you room to adjust as conditions change. The warmest days reach 23.6°C or more, but days reaching 25°C are uncommon, so don't base your packing on a warm spell. Evenings need more thought: the average low is 13°C, while the coldest nights fall to 8.5°C or below. Bring a jumper, a jacket and long trousers, particularly if you expect to sit outside after dark rather than keep moving.

Make room for rain in your plans

October is wet enough that waterproofs should be part of your packing, not an afterthought. About 11 days have measurable rain, so a trip built entirely around being outdoors would be a gamble. Keep your outdoor plans movable and take shoes you can comfortably wear in wet weather. There is still useful sunshine: about 5.7 hours a day within 10.8 hours of daylight. That makes daytime your best opportunity for longer outings, while leaving evenings for less weather-dependent plans. Those averages don't promise a daily pattern, though, so avoid assuming that rain will conveniently fall outside your planned activities.

Treat swimming as an option, not the point of the trip

The sea averages 20.3°C, which puts it in the bracing category rather than comfortably warm swimming water. If you enjoy cooler water, a dip may still appeal, but don't expect the sea to feel like a warm bath. The year-to-year range is 20°C to 21°C, still below the 22°C warm-swimming threshold, so relying on a warmer year doesn't change the basic judgement. Bring swimwear if you would regret missing a suitable day, along with dry layers for afterwards. For a holiday centred on swimming and lying in the sun, October is a compromise rather than a dependable choice.