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Sardinia

Costa Rei weather and climate

Sardinia

Costa Rei weather and climate

 

Day

18 °C

 

Night

11 °C

 

Sea

18 °C

 

Precipitation

37 mm

in month

 

Rainy days

8 days

in month

 

Daylight

10 hours

average

 

Sunshine

5 hours

average

 

Humidity

76 %

 

Day

18 °C

 

Night

11 °C

 

Sea

18 °C

 

Precipitation

37 mm

in month

 

Rainy days

8 days

in month

 

Daylight

10 hours

average

 

Sunshine

5 hours

average

 

Humidity

76 %

Overview: Costa Rei
Costa Rei (Italy) is a place with a hot climate. The day temperatures range from 14 °C (56 °F) in January to 30 °C (86 °F) in August. The highest sea temperatures in Costa Rei are in August with 25 °C (78 °F) and the lowest in February with 14 °C (57 °F). The highest night temperatures could be experienced in August with 22 °C (71 °F), the lowest in February with 7 °C (45 °F). The least rainy month in Costa Rei is July with its 1 day of rain, the rainiest month is November, when it rains 8 days.
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Sunheron logoWe aggregate data from combining multiple weather sources to ensure accuracy of the highest order.

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Sunheron logoWe make the most from 40 years of historical weather data to predict the best weather conditions.

Last week's weather in Costa Rei

During the week of 6 October 2025 - 12 October 2025, temperatures averaged at 25 °C (77 °F) during the day and dropped to 19 °C (66 °F) at night. The current temperatures are slightly above the long-term average for Costa Rei, with the daily and nighttime temperatures being 23 °C (73 °F) and 16 °C (61 °F), respectively. The average temperatures during different times of day (local time) were following: 7am 19 °C (66 °F), 10am 21 °C (70 °F), 1pm 23 °C (73 °F), 4pm 24 °C (75 °F), 7pm 22 °C (72 °F), 10pm 21 °C (70 °F).

There were 4 days without rain, 1 day with light rain and 2 days with moderate rain during this week. During the whole week, total of 3 mm (0.12 in) of precipitation was observed, which is below the long term average for Costa Rei, which is 9 mm (0.35 in). From dawn to dusk, there was an average of 43 % cloud coverage during the day. The meteorological event(s) that occurred was: haze.

An average wind speed of 3.4 m/s was recorded. Prevailing wind direction(s) were North-East and North. The air pressure varied between 1017 hpa and 1025 hpa. On average, the air humidity in Costa Rei was 66 %.

During the daytime (from dawn to dusk), there were in average: 6 hours clear skies, 3.5 hours partially overcast skies, 2.5 hours overcast skies and 1 hour rainy weather. The sunrise on average occurred at 07:25, and the sunset occurred at 18:52.

Weather overview for Costa Rei

Weather overview

Costa Rei (Italy) is a place with a hot climate. The day temperatures range from 14 °C (56 °F) in January to 30 °C (86 °F) in August. The highest sea temperatures in Costa Rei are in August with 25 °C (78 °F) and the lowest in February with 14 °C (57 °F). The highest night temperatures could be experienced in August with 22 °C (71 °F), the lowest in February with 7 °C (45 °F). The least rainy month in Costa Rei is July with its 1 day of rain, the rainiest month is November, when it rains 8 days.

January weather

The minimum of the day temperature can be noticed, with its value of 14 °C (56 °F) in Costa Rei, while the sea temperature descents similarly to the previous month, with its value being 14 °C (58 °F). The number of rainy days continues to descent, the value of this measure is 7 days, while the rainfall amount descent's start could be observed, with its value being 27 mm (1.07 in). The night temperature descents similarly to the previous month, its value is 7 °C (45 °F).

February weather

The minimum of the sea temperature is observable, with its value of 14 °C (57 °F) in Costa Rei, and the minimum of the night temperature can be noticed as well, with its value being 7 °C (45 °F). The wind speed reaches its maximum, with its value of 5. The beginning of the rise of the number of sun hours (without clouds) could be noticed, its value is 5 hours.

March weather

The beginning of the rise of the day temperature could be noticed, with its value of 16 °C (61 °F) in Costa Rei, and the night temperature starts to rise too in March. The rainfall amount starts to descent, its value is 23 mm (0.91 in), and the number of rainy days starts to descent as well, its value is 6 days. The rise of the number of sun hours (without clouds) can be observed, with its value being 6 hours.

Sunheron logoWe aggregate data from combining multiple weather sources to ensure accuracy of the highest order.

April weather

The sea temperature rise's start could be observed, with its value being 15 °C (59 °F) in Costa Rei, while the day temperature rises similarly to the previous month, with its value being 19 °C (66 °F). The night temperature rises similarly to the previous month, with its value of 11 °C (52 °F). The number of sun hours (without clouds) rises similarly to the previous month, its value is 7 hours.

May weather

The sea temperature rises similarly to the previous month, with its value being 17 °C (63 °F) in Costa Rei, and the day temperature rises similarly to the previous month too, with its value being 22 °C (72 °F). The number of rainy days starts to descent, with its value of 4 days, and the rainfall amount descent's start could be observed too, its value is 14 mm (0.57 in). The dry season is about to start. The night temperature rises similarly to the previous month, with its value of 14 °C (58 °F).

June weather

The tourist season is at its beginning in June in Costa Rei. The day temperature continues to rise, with its value of 27 °C (80 °F), and the sea temperature continues to rise too, its value is 21 °C (69 °F). The rainfall amount descents similarly to the previous month, with its value being 5 mm (0.21 in), and the number of rainy days continues to descent as well, with its value of 2 days. The night temperature rises similarly to the previous month, with its value of 18 °C (65 °F).

July weather

The rise of the day temperature can be observed, with its value of 30 °C (85 °F) in Costa Rei, and the sea temperature rises similarly to the previous month too, its value is 24 °C (75 °F). There is pending tourist season. The rainfall amount reaches its minimum, its value is 4 mm (0.16 in), and the minimum of the number of rainy days is observable as well in July. The number of sun hours (without clouds) reaches its maximum in July.

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August weather

The tourist season is close to its peak in Costa Rei, and the ongoing dry season is noticeable too in August. The maximum of the sea temperature is observable, the value of this measure is 25 °C (78 °F), and the maximum of the day temperature is observable as well in August. The beginning of the rise of the number of rainy days could be noticed, the value of this measure is 2 days. The maximum of the night temperature can be noticed in August.

September weather

The beginning of the descent of the day temperature could be noticed in Costa Rei, and the beginning of the descent of the sea temperature could be noticed too. There is pending tourist season. The rise of the number of rainy days can be observed, its value is 5 days, while the maximum of the rainfall amount can be noticed in September. The beginning of the descent of the night temperature could be noticed, its value is 19 °C (66 °F).

October weather

The descent of the day temperature can be observed, with its value of 23 °C (73 °F) in Costa Rei, and the sea temperature continues to descent as well, with its value of 21 °C (70 °F). The number of rainy days rises similarly to the previous month, with its value being 6 days, while the rainfall amount starts to descent, with its value of 38 mm (1.51 in). The descent of the night temperature can be observed, its value is 16 °C (60 °F). The number of sun hours (without clouds) descents similarly to the previous month, with its value of 6 hours.

November weather

The descent of the day temperature can be observed, with its value being 18 °C (64 °F) in Costa Rei, and the sea temperature descents similarly to the previous month as well, with its value being 18 °C (65 °F). The descent of the night temperature can be observed, with its value being 11 °C (52 °F). The descent of the number of sun hours (without clouds) can be observed, with its value of 5 hours. The number of rainy days reaches its maximum.

December weather

The day temperature continues to descent, with its value of 15 °C (59 °F) in Costa Rei, and the sea temperature continues to descent as well, the value of this measure is 16 °C (60 °F). The number of rainy days starts to descent, with its value being 7 days. The night temperature continues to descent, with its value being 9 °C (48 °F). The day length is on its minimum in this month. The number of sun hours (without clouds) reaches its minimum in this month.

FAQs

How windy is it in Costa Rei in April?

An average wind scale that can be expected in April in Costa Rei is 5.

What is the average number of rainy days in Costa Rei in May?

There are 4 days, which are rainy in May in Costa Rei, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.0 days of the week, or in general - 14 % days.

Are there good conditions to visit in Costa Rei in June?

In Costa Rei in June, there are ideal conditions for a vacation. The temperature during the day will be nice 27 °C (80 °F). At night, temperatures hover around a pleasant 18 °C (65 °F). You can expect just 2 days of rain during the month, taking an umbrella is not necessary. A sea temperature of 21 °C (69 °F) can seem colder to some, but others will call it refreshing.

What is the sea temperature in Costa Rei in July?

The sea will reach 24 °C (75 °F) in July in Costa Rei. It will be comfortable for you to spend even a long time in a sea warm like this, there will be people for whom this temperature will be too low or too high.

Sunheron logoWe make the most from 40 years of historical weather data to predict the best weather conditions.

What temperature can I expect during the day in August in Costa Rei?

The average daily temperature in August in Costa Rei is 30 °C (86 °F). The great temperature for lying by the sea or pool and sunbathing, everywhere else you will probably be a bit hot. Don't forget to drink during the day, in these temperatures you should hydrate yourself a lot.

Is September part of the wet season in Costa Rei?

No, there is no wet season in Costa Rei in September - you can expect 5 days of rain during the month.

What is the night temperature in October in Costa Rei?

The average night temperature in October in Costa Rei is 16 °C (60 °F). This temperature is pleasant for a wide range of evening, night, and morning activities from sports to sitting outside in restaurants or evening walks.

Is there a dry season in November in Costa Rei?

No, November is not a dry month in Costa Rei, expect rain approximately 8 days in a month.

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