Sardinia, Italy

Olbia & Costa Smeralda weather by month

Olbia & Costa Smeralda is warmest in July, with average highs of 33°C, and coolest in January at 15°C. The sea ranges from about 14°C to 26°C, warmest in August.

WarmestJuly33°C average high
CoolestJanuary15°C average high
Warmest seaAugust26°C on average
From Dublin≈ 2h 45mdirect, estimated

Olbia & Costa Smeralda through the year

Beach weather (highs of 25°C or more and fewer than seven rainy days) is most likely June to September. November is the wettest month, with rain on about 9 days.

Average low to highSea temperatureRainy days

Month by month

Olbia & Costa Smeralda: average weather for each month, 2011–2025; sea 2022–2025
Month	High	Low	Sea	Rainy days	Rain	Sky	Days 25°C+
January	15°	6°	14°	6	56 mm	Often cloudy	0%
February	16°	5°	14°	7	50 mm	Often cloudy	0%
March	17°	7°	14°	8	64 mm	Often cloudy	0%
April	20°	9°	15°	6	48 mm	Often cloudy	4%
May	24°	12°	18°	5	52 mm	Some cloud	32%
June	30°	17°	22°	2	18 mm	Some cloud	93%
July	33°	20°	26°	1	12 mm	Mostly clear	100%
August	33°	20°	26°	2	13 mm	Mostly clear	100%
September	29°	17°	24°	4	43 mm	Some cloud	90%
October	25°	13°	22°	6	51 mm	Some cloud	44%
November	19°	10°	19°	9	78 mm	Often cloudy	1%
December	16°	6°	16°	6	41 mm	Often cloudy	0%

Shaded rows: beach weather (June to September). Rainy days = days with 1 mm of rain or more, as weather stations count them. Sky = average cloud cover. How we measure

Flying time

Estimated from the distance for a direct flight. Real schedules vary, and many long-haul trips need a connection.

From Dublin≈ 2h 45m
From Cork≈ 2h 45m
From Belfast≈ 2h 45m
From London≈ 2h 15m
From Manchester≈ 2h 30m
From Glasgow≈ 2h 45m

Similar weather

Air: Copernicus ERA5-Land, 2011–2025, for the land nearest Olbia & Costa Smeralda (5 m), matched to the official 1991-2020 averages for Olbia airport (Aeronautica Militare). Sea: Copernicus ERA5 sea surface temperature, 2022–2025. Averages describe past weather, not a forecast.