Destination guide

Split weather by month

June and September offer the best balance in Split if you want warm days and a sea comfortable for swimming without the strongest summer heat. June averages 26°C by day, September 24°C, and both have sea temperatures of 22°C. July and August suit travellers who prioritise heat and sunshine, while spring is better for walking than swimming. Winter needs a different approach: layers, waterproofs and flexible plans rather than expectations of beach weather.

Hottest month
29.3°CAugust
Coolest month
10.1°CJanuary
Warmest sea
24.6°CAugust
Flight from London
2 h 36 minShort-haul (up to 4.5 h) · estimated

Split, month by month

A little perspective

Split through the year

Every month at a glance; "best" marks our three top months on warmth, dryness and sunshine.

Monthly climate averages

Swipe sideways on a phone; the month stays in view.

Split monthly climate averages, 1991-2020
MonthDayNightSeaSun/dayRain mmRainy daysDays 25°C+
January10.1°C3.8°C13.7°C4.2120110%
February10.9°C3.8°C12.7°C5.0106100%
March13.8°C6.4°C12.8°C5.8103100%
April17.2°C9.6°C14.2°C6.5100111%
May21.7°C13.9°C17.8°C7.874914%
Junebest26.0°C17.9°C21.7°C9.942762%
Julybest29.0°C20.3°C24.0°C11.627592%
Augustbest29.3°C20.7°C24.6°C10.641594%
September24.3°C16.7°C22.4°C7.6104843%
October19.9°C13.0°C20.3°C5.7137112%
November15.1°C9.2°C18.0°C4.0226140%
December11.2°C5.2°C15.7°C4.0175120%

Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.

Day, night and sea

Monthly average temperatures, 1991-2020

  • Day
  • Night
  • Sea
Bars show average daytime highs and night-time lows; circles mark the average sea temperature. Same scale for every month. Exact values are in the table.

Best months here

On warmth, low rainfall and sunshine, start with these.

When to go to Split

For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: June, July, August. November is the wettest month (226 mm, about 14 rainy days) and July the driest (27 mm). The sea is warmest in August at 24.6°C and coolest in February at 12.7°C.

Getting there

A direct flight from London Gatwick to Split Saint Jerome Airport (SPU, 12 km from Split) takes roughly 2 h 36 min - short-haul (up to 4.5 h) by UK standards. Time-zone: Europe/Zagreb.

Records and extremes, 1991-2020

The hottest day recorded in Split between 1991 and 2020 reached 39.8°C on 2 August 2017; the coldest fell to -11.6°C on 26 January 2000. In August one day in ten tops 32.9°C and about 41% of days pass 30°C; in January one night in ten drops to -0.5°C or below. The wettest single month of the period was November 2019 with 509 mm, against a November average of 226 mm.

Sunrise, sunset and daylight in Split

Local time on the 15th of each month; daylight-saving rules as of 2020.

Month (15th)SunriseSunsetDaylightSunshine/day
January07:2516:429.3 h4.2 h
February06:5417:2310.5 h5.0 h
March06:0618:0011.9 h5.8 h
April06:1219:3713.4 h6.5 h
May05:2920:1214.7 h7.8 h
June05:1320:3715.4 h9.9 h
July05:2720:3315.1 h11.6 h
August05:5919:5814.0 h10.6 h
September06:3419:0512.5 h7.6 h
October07:0818:1211.1 h5.7 h
November06:4816:309.7 h4.0 h
December07:2016:189.0 h4.0 h

Winter and spring: walking weather, with layers

December, January and February are cool rather than beach-friendly, with daytime averages around 10°C to 11°C and chilly evenings. Pack a warm layer and a waterproof, and leave room to change outdoor plans when rain arrives. March brings a daytime average of 14°C, but the sea remains cold. April is more comfortable for spending time outside at 17°C, although it has as many rain days as January, so spring does not mean reliably dry weather. May is the clearer step towards summer: days average 22°C, with more sunshine and fewer rain days than April. It suits travellers who prefer walking without peak summer heat, but the sea at 18°C will still feel brisk.

Summer: the strongest choice for swimming and sunshine

June is a good compromise if you like summer warmth but find hotter afternoons tiring. Its evenings average 18°C, so a light layer can still be useful when sitting outside. July and August bring daytime averages of 29°C, making early outings and a shaded midday break sensible. July has the most sunshine, averaging 12 hours a day, and the lowest rainfall total; August has fewer rain days and the warmest sea at 25°C. Choose these months if swimming matters more than keeping cool. Light clothing and sun protection are priorities, while August nights averaging 21°C make a room you can cool down a practical consideration.

Autumn: September warmth gives way to wetter days

September keeps much of summer's appeal, but with gentler daytime heat and cooler evenings. It is a strong choice for combining swimming with time spent walking, though rain becomes more likely than in August. October is a transition month: both the daytime and sea averages are 20°C, so a swim may still appeal, but it is less dependable as a beach-focused trip. Bring layers for evenings and a waterproof for changeable days. November shifts the balance firmly away from swimming holidays, with days averaging 15°C and the most rain days of any month. Choose it only if cooler conditions and flexible outdoor plans suit you.

A little more detail

Split weather FAQs

Plain answers, grounded in the averages.

What is the best time to visit Split?

Judged on warmth, low rainfall and sunshine, the best months in Split are August, July and June. August is the hottest month (average high 29.3°C) and January the coolest (10.1°C).

How many months a year is Split over 25°C?

3 months in Split average a daytime high of 25°C or more, and 5 average 20°C or more.

When is the rainy season in Split?

November is the wettest month in Split (226 mm on average) and July the driest (27 mm). Annual rainfall averages 1255 mm.

What is the hottest temperature recorded in Split?

The hottest day recorded in Split between 1991 and 2020 reached 39.8°C on 2 August 2017; the coldest fell to -11.6°C on 26 January 2000. Records come from daily data for 1991-2020, not from a single station's all-time history.

When is the sea warmest in Split?

August has the warmest sea, averaging 25°C, followed by July at 24°C. June and September both average 22°C, making them useful alternatives if you want to swim without the hottest daytime conditions.

Is May or October better for a trip to Split?

May is warmer by day, sunnier and has fewer rain days, so it is the better fit for spending time outdoors. October has the warmer sea at 20°C compared with May's 18°C, but you should be more prepared for rain.

Will I need warm clothes in winter?

Yes. Winter daytime averages are around 10°C to 11°C, while nights fall to 4°C in January and February and 5°C in December. Bring warm layers and a waterproof rather than relying on light holiday clothing.

See also: Croatia weather by month · where else is hot in August

About these averages

ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020

Averages computed from daily values at Split. Sea temperature from the nearest 5 km sea cell, 2.1 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather