The city is located on the northwest coast of Sardinia, an island exposed to the Mistral, a cool, sometimes cold, and dry wind blowing from the north-west.
amounts to 570 millimeters (22.4 inches) per year. The rains are not abundant, however, they are more abundant than in southern Sardinia, where they drop even below 450 mm (17.5 in) per year.
, from December to February, is mild, and is characterized by sunny periods alternating with rainy periods.
On the coldest nights of the year, the temperature typically drops to -1/-2 °C (28/30 °F), but can occasionally drop to lower values. For example, it dropped to -5 °C (23 °F) in January 1981, and to -4 °C (25 °F) in January 1995 and in February 2012. Snow can occasionally fall, as happened in February 1956, January 1985 and February 2012.
There are periods in which the temperatures are not too high and the breeze blows, however,
of African origin can sometimes occur. The temperature reaches at least 37/38 °C (99/100 °F) almost every year, but at times it can reach or exceed 40 °C (104 °F).
The record is 42.7 °C (108.9 °F), set in July 2023. In August 2003, the average maximum was 34.3 °C (93.7 °F).
is good. There may be sunny periods even in winter, while in summer, the sky is normally clear.
to visit Alghero for a beach holiday is the summer, from June to August. The sea temperature is comfortable enough from July to September, although in September, which in any case is still a good month (especially in the first half), the first periods of bad weather can occur.
. Here are the average temperatures.
January is generally a mild month. The average temperature is of
9.6 °C, with a minimum of
4.9 °C and a maximum of
14.3 °C.
On the coldest nights of the month, the temperature usually drops to around
-1 °C. However, it dropped to
-4.3 °C in January 1995.
On the warmest days of the month, the temperature usually reaches around
18 °C. However, it reached
21.6 °C in January 2018.
Precipitation amounts to
70 mm, distributed over 8 days.
The day lasts on average 9 hours and 40 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
10.9 kph.
The average sea temperature is of
14.4 °C. Therefore, the sea is very cold for swimming.
February, the coldest month of the year, is generally a mild month. The average temperature is of
9.6 °C, with a minimum of
4.6 °C and a maximum of
14.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-1 °C. However, it dropped to
-4 °C in February 2012.
On the warmest days of the month, the temperature usually reaches around
18.5 °C. However, it reached
25 °C in February 2004.
Precipitation amounts to
55 mm, distributed over 8 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
11.5 kph.
The average sea temperature is of
13.8 °C. Therefore, the sea is very cold for swimming.
March is generally a mild month. The average temperature is of
11.4 °C, with a minimum of
6.2 °C and a maximum of
16.6 °C.
On the coldest nights of the month, the temperature usually drops to around
0 °C. However, it dropped to
-2 °C in March 1993.
On the warmest days of the month, the temperature usually reaches around
22.5 °C. However, it reached
28 °C in March 2016.
Precipitation amounts to
60 mm, distributed over 7 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
12.3 kph.
The average sea temperature is of
14 °C. Therefore, the sea is very cold for swimming.
April is generally a mild month. The average temperature is of
13.8 °C, with a minimum of
8.2 °C and a maximum of
19.3 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
-2.4 °C in April 1995.
On the warmest days of the month, the temperature usually reaches around
26 °C. However, it reached
31.7 °C in April 2003.
Precipitation amounts to
50 mm, distributed over 7 days.
The day lasts on average 13 hours and 20 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
12 kph.
The average sea temperature is of
15.1 °C. Therefore, the sea is cold for swimming.
May is generally a very mild month. The average temperature is of
17.6 °C, with a minimum of
11.6 °C and a maximum of
23.6 °C.
On the coldest nights of the month, the temperature usually drops to around
6.5 °C. However, it dropped to
3 °C in May 2019.
On the warmest days of the month, the temperature usually reaches around
30.5 °C. However, it reached
37 °C in May 2009.
Precipitation amounts to
25 mm, distributed over 4 days.
The day lasts on average 14 hours and 30 minutes. So the days are long.
There are on average 8.5 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
10.7 kph.
The average sea temperature is of
17.6 °C. Therefore, the sea is cold for swimming.
June is generally a warm month. The average temperature is of
21.7 °C, with a minimum of
15.4 °C and a maximum of
28.1 °C.
On the coldest nights of the month, the temperature usually drops to around
10.5 °C. However, it dropped to
7.6 °C in June 2006.
On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
39.8 °C in June 2012.
Precipitation amounts to
15 mm, distributed over 2 days.
The day lasts on average 15 hours and 0 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 10 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 69%.
The average wind speed is of
10.7 kph.
The average sea temperature is of
21.1 °C. Therefore, the sea is cool for swimming.
July is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
24.5 °C, with a minimum of
18 °C and a maximum of
31.1 °C.
On the coldest nights of the month, the temperature usually drops to around
13.5 °C. However, it dropped to
10 °C in July 1993.
On the warmest days of the month, the temperature usually reaches around
37.5 °C. However, it reached
40.6 °C in July 2017.
Precipitation amounts to only
5 mm, and all occurs in one day.
The day lasts on average 14 hours and 40 minutes. So the days are long.
There are on average 11.5 hours of sunshine per day. So, the sun shines 77% of the time.
The average humidity is 66%.
The average wind speed is of
10.2 kph.
The average sea temperature is of
24 °C. Therefore, the sea is warm enough for swimming.
August, the warmest month of the year, is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
24.9 °C, with a minimum of
18.2 °C and a maximum of
31.5 °C.
On the coldest nights of the month, the temperature usually drops to around
14 °C. However, it dropped to
11.6 °C in August 1993.
On the warmest days of the month, the temperature usually reaches around
37.5 °C. However, it reached
42 °C in August 2017.
Precipitation amounts to
25 mm, distributed over 2 days.
The day lasts on average 13 hours and 40 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 67%.
The average wind speed is of
9.5 kph.
The average sea temperature is of
25.1 °C. Therefore, the sea is warm enough for swimming.
September is generally a warm month. The average temperature is of
21.6 °C, with a minimum of
15.7 °C and a maximum of
27.4 °C.
On the coldest nights of the month, the temperature usually drops to around
10.5 °C. However, it dropped to
5.8 °C in September 2001.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
38.1 °C in September 2011.
Precipitation amounts to
40 mm, distributed over 4 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
9.9 kph.
The average sea temperature is of
23.7 °C. Therefore, the sea can be considered barely acceptable for swimming.
October is generally a warm month. The average temperature is of
18.3 °C, with a minimum of
12.8 °C and a maximum of
23.7 °C.
On the coldest nights of the month, the temperature usually drops to around
7.5 °C. However, it dropped to
1.8 °C in October 2007.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
33.1 °C in October 2003.
Precipitation amounts to
80 mm, distributed over 7 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
9.8 kph.
The average sea temperature is of
21.5 °C. Therefore, the sea is cool for swimming.
November is generally a mild month. The average temperature is of
14 °C, with a minimum of
9.2 °C and a maximum of
18.7 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
-1.1 °C in November 1995.
On the warmest days of the month, the temperature usually reaches around
24.5 °C. However, it reached
27.8 °C in November 2011.
Precipitation amounts to
80 mm, distributed over 8 days.
The day lasts on average 9 hours and 55 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
11 kph.
The average sea temperature is of
18.5 °C. Therefore, the sea is very cool for swimming.
December is generally a mild month. The average temperature is of
10.9 °C, with a minimum of
6.3 °C and a maximum of
15.4 °C.
On the coldest nights of the month, the temperature usually drops to around
0 °C. However, it dropped to
-3.4 °C in December 1999.
On the warmest days of the month, the temperature usually reaches around
20 °C. However, it reached
22.6 °C in December 2010.
Precipitation amounts to
65 mm, distributed over 7 days.
The day lasts on average 9 hours and 20 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 3.5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
11.4 kph.
The average sea temperature is of
15.9 °C. Therefore, the sea is cold for swimming.