Omiš weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: July – August
What is the weather like in Omiš in August?
In August, Omiš is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 24.7 °C – pleasant for swimming. With around 10 hours of sunshine a day, there is plenty of sun. Rain is rare: about 5 days bring 43 mm in total. The air is often humid and muggy. All in all, August is an excellent month for a holiday in Omiš.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 100 | 99 | 73 |
| Day | 26° | 26° | 23° |
| Night | 23° | 23° | 20° |
| Sea | 24° | 25° | 23° |
| Sun | 11 h | 10 h | 8 h |
| Rain days | 4 | 5 | 8 |
More details for August
- Daylight
- 14 h 2 min05:57 – 19:59
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 22 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 25 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Zagreb
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %94 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
Omiš in August: quick answers
Is Omiš hot in August?
Warm rather than hot: in August, daytime highs in Omiš average 26 °C and nights cool to about 23 °C.
Can you swim in Omiš in August?
Yes. In August the sea averages 24.7 °C – pleasant for swimming.
Does it rain much in Omiš in August?
Rain is rare: about 5 days bring 43 mm in total.
Omiš month by month
The whole year in OmišAll destinations: CroatiaWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences