Best time to visit Costa Smeralda
The best time to visit Costa Smeralda for a beach holiday is during summer from mid-June through to mid-September.
However, anytime from mid-April to mid-October is good for a range of outdoor activities. April and May are good months for hiking, exploring the island and visiting cities, so avoiding the intense heat of summer. In October, the weather can be rainy and windy.
Costa Smeralda weather
Located on the northeast coast of Sardinia, the Costa Smeralda has a Mediterranean climate with hot, sunny summers and mild, wet winters.
Both the Mistral, a cool, dry wind from the north-west, and the Sirocco, a warm, humid wind from the south-east, can blow.
What is the best month to visit Costa Smeralda?
Late-June through to early-September are the best months to visit Costa Smeralda – the climate is perfect with hot, sunny weather and little to no rainfall.
July and August are especially popular, since this is the peak tourist season in Costa Smeralda.
To avoid the crowds, higher prices and heat of summer, the months of May and October are also good for a range of outdoor activities.
Which is the hottest month in Costa Smeralda?
The hottest months in Costa Smeralda are usually July and August, with maximum daytime temperatures of 32°C (89°F), with high heat and humidity and a low of 19°C (66°F)
On the warmest days of July and August, the temperature may reach a high of 37°C (98°F).
The hot summer season lasts from mid-June to mid-September, with an average daily high temperature above 27°C (80°F).
Which is the coldest month in Costa Smeralda?
The coldest month in Costa Smeralda is usually February, with an average high temperature of 14°C (57°F) and an average night-time low of 5°C (41°F).
The cool winter season lasts from late-November through March, with an average daily high temperature below 17°C (62°F).
Which is the sunniest month in Costa Smeralda?
The sunniest month in Costa Smeralda is usually July with sunshine on average for 78% of daylight hours; that's 11.5 hours of sunshine per day.
What is the humidity in Costa Smeralda?
Costa Smeralda experiences notable seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 66% – 80% over the course of the year.
What do the humidity conditions feel like in Costa Smeralda?
We derive the humidity comfort level – what conditions feel like – from the dew point temperature, which measures moisture content in the atmosphere: a higher dew point feels more humid, while a lower dew point feels drier.
Meteorologists agree that dew point temperature is a more consistant indication of 'absolute humidity' than relative humidity, which fluctuates with temperature.
The average annual dew point in Costa Smeralda is 12°C (53°F), and varies over the course of the year from dry and comfortable at 6°C (42°F) to slightly humid at 18°C (64°F).
The more humid time of year in Costa Smeralda lasts from mid-June through September, when you can expect the comfort level to be humid at least 15% of the time.
The month with the most humid days in Costa Smeralda is August, with around 18 days that may feel humid.
November through May is generally comfortable, with no days in any month that feel humid.
When is the sea warmest in Costa Smeralda?
The sea is usually at its warmest in Costa Smeralda in August when the water temperature reaches 25°C (77°F), which is warm enough for swimming.
The sea temperature is comfortable for swimming from July to September.
Which month has the most rain in Costa Smeralda?
December is usually the wettest month in Costa Smeralda with 100mm (4in) of rainfall on average, distribured across nine days.
The rainy period of the year lasts from mid-September to early-May, with a greater than 15% chance of a given day being a wet day.
The drier season with little or no rainfall lasts from early-May through to mid-September. July has the least rainfall.
Which is the windiest month in Costa Smeralda?
The windiest month of the year in Costa Smeralda is December, with an average hourly wind speed of 19 kilometres per hour (12 mph; 10 knots).
The windy part of the year lasts from late-October to late-April, with average wind speeds of more than 16 kilometres per hour (10 mph; 8.6 knots).
The less-windy time of year lasts from late-April to late-October. The calmest month of the year in Sardinia is August, with an average hourly wind speed of 14 kilometres per hour (8.7 mph; 7.6 knots).
The predominant average hourly wind direction is from the west throughout the year in Costa Smeralda.
Costa Smeralda Weather Averages
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average high temperature (°C) | |||||||||||
| 14 | 14 | 16 | 19 | 24 | 28 | 32 | 32 | 27 | 23 | 18 | 15 |
| Average low temperature (°C) | |||||||||||
| 5 | 5 | 6 | 8 | 12 | 16 | 19 | 19 | 16 | 12 | 9 | 6 |
| Average daily sunshine (hrs) | |||||||||||
| 4 | 5 | 6 | 7 | 9 | 10 | 11 | 10 | 8 | 6 | 4 | 4 |
| Average daily daylight (hrs) | |||||||||||
| 9 | 10 | 12 | 13 | 14 | 15 | 14 | 13 | 12 | 11 | 10 | 9 |
| Comfort level – heat | |||||||||||
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| Comfort level – humidity (#muggy days) | |||||||||||
| - | - | - | - | - | 6 | 15 | 18 | 11 | 4 | - | - |
| Average dew point temperature (°C) | |||||||||||
| 7 | 6 | 8 | 10 | 13 | 16 | 18 | 18 | 16 | 14 | 10 | 8 |
| Average relative humidity (%) | |||||||||||
| 80 | 79 | 77 | 76 | 74 | 70 | 66 | 69 | 72 | 76 | 79 | 80 |
| UV Index (max) | |||||||||||
| 2 | 3 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Average days of rainfall (≥1mm) | |||||||||||
| 7 | 8 | 8 | 8 | 4 | 3 | 1 | 3 | 5 | 5 | 6 | 9 |
| Average monthly rainfall (mm) | |||||||||||
| 45 | 75 | 65 | 55 | 35 | 20 | 6 | 30 | 40 | 60 | 55 | 100 |
| Average wind speed (km/h) | |||||||||||
| 19 | 19 | 18 | 17 | 15 | 14 | 14 | 14 | 15 | 16 | 18 | 19 |
| Average sea temperature (°C) | |||||||||||
| 14 | 14 | 14 | 15 | 18 | 21 | 24 | 25 | 24 | 21 | 18 | 16 |
| Costa Smeralda, Sardinia, Italy | |||||||||||
Holiday seasons
High season: From June to early-September, with July and August two months to avoid – the most expensive and crowded time to travel in Italy. Most hotels are fully booked with restaurants and beaches at their busiest.
Shoulder season: From April to May, early-September to October, and from mid-December to 24 December.
Low season: From November to mid-December and 25 December to 30 March.
Many hotels and restaurants close down for a month or two between November and February.
Source: Meteorological data for Costa Smeralda, Sardinia is based on weather statistics gathered for the 30-year period 1991 to 2020 by Servizio Meteorologico – the Italian Meteorological Service – from the nearest weather stations: Guardiavecchia and Olbia Costa Smeralda Airport (OLB), located respectively 14km (8mi) northwest and 27km (16mi) south of Costa Smeralda.
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
More about Sardinia…
Latest update: Best time to visit Costa Smeralda, Sardinia: 9 June, 2024
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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