In Cagliari, the capital of Sardinia, the climate is Mediterranean, with mild and rainy winters, and hot and sunny summers.
The average temperature of January and February is about 10 °C (50 °F), while that of July and August is about 25 °C (77 °F). During winter, it is rarely very cold, however, there may be a few cold days, with highs around 10 °C (50 °F), and lows around freezing, or even a few degrees below. Snow is very rare: for example, it snowed in January 1985 and January 1993.
In summer, the hottest days occur when the southern wind (scirocco) blows from Africa: in these cases, it is possible for the temperature to touch or exceed 40 °C (104 °F).
Here are the average temperatures.
Average temperatures - Cagliari

Cagliari	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cagliari	J	F	M	A	M	J	J	A	S	O	N	D
Min (°C)	6	6	7	9	12	16	19	20	17	14	9	7
Max (°C)	14	15	17	19	23	27	30	31	27	23	18	15
Min (°F)	43	43	45	48	54	61	66	68	63	57	48	45
Max (°F)	57	59	63	66	73	81	86	88	81	73	64	59

The rainfall is not abundant, as it slightly exceeds 400 millimetres (16 inches) per year; this happens because weather disturbances pass quickly and are soon replaced by the mistral, the northwest wind blowing from France, fresh and dry. Here is the average precipitation.
Average precipitation - Cagliari

Cagliari	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Cagliari	J	F	M	A	M	J	J	A	S	O	N	D	Y
Prec. (mm)	45	55	45	35	25	10	3	10	30	55	55	55	425
Prec. (in)	1,8	2,2	1,8	1,4	1	0,4	0,1	0,4	1,2	2,2	2,2	2,2	16,7
Days	8	8	7	6	4	2	1	1	4	6	8	8	62

The sea is warm enough for swimming from July to September, whereas in June and October it is quite cool. Here the temperature of the sea.
Sea temperature - Cagliari

Cagliari	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cagliari	J	F	M	A	M	J	J	A	S	O	N	D
Sea (°C)	15	14	14	15	17	21	24	25	24	21	18	16
Sea (°F)	59	57	57	59	63	70	75	77	75	70	64	61

The amount of sunshine in Cagliari is very good in summer, when clear skies prevail; in winter there is an alternation of sunny periods with periods of bad weather, with rain, wind and thunderstorms. On average, there are 4 hours of sunshine per day in December and January, and 11 hours in July.
Sunshine - Cagliari

Cagliari	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cagliari	J	F	M	A	M	J	J	A	S	O	N	D
Sun (hours)	4	5	6	7	9	10	11	10	8	6	5	4

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