Alicante, where it is

In Alicante, a city on the southeastern coast of Spain, the climate is Mediterranean, with mild, relatively rainy winters and hot, sunny summers. The city is located in a particularly mild area, arid and sunny.
The monthly average temperature ranges from 11.5 °C (52.5 °F) in January to 26 °C (79 °F) in August. Here are the average temperatures.
Alicante - Average temperatures
Min (°C)77911141821221915118
Max (°C)171719212428303129252017
Min (°F)454548525764707266595246
Max (°F)636366707582868884776863

Rainfall is scarce, only 285 millimeters (11.2 inches) per year; in particular, winter is drier than it normally is in Mediterranean climates, while summer (as is normal) is almost completely devoid of rain. Owing to the scarcity of rainfall, the landscape is arid.
The days with rainfall are particularly rare, but when it rains, it can rain a lot, and sometimes the rains may be intense and concentrated in time, causing floods.
Here is the average precipitation.
Alicante - Average precipitation

Winter, from December to February, is a mild season, and it's characterized by sunny periods alternating with rare periods of bad weather, with wind and rain. There are many sunny days, with daytime temperature reaching or exceeding 20 °C (68 °F), even in winter. Very cold days are rare: only on colder nights, the temperature drops to freezing (0 °C or 32 °F), but even in these cases, the daytime temperature usually rises above 10 °C (50 °F). In practice, it never snows.

Spring, from March to May, is mild and sunny, with rainy days still possible, but not very frequent, and some afternoon thunderstorms coming from the interior in late spring. By May, and sometimes by April, the first hot days, with highs around 30 °C (86 °F), begin to occur.

Summer, from June to mid-September, is hot and sunny. Typically, maximum temperatures hover around 28/29 °C (82/84 °F) in June and September, and around 30/32 °C (86/90 °F) in July and August. It's hot and humid, but there is also the sea breeze, in short, the typical Mediterranean summer. Sometimes, however, there may be heat waves, during which temperatures can reach 35/37 °C (95/99 °F), and occasionally up to 40 °C (104 °F).

Autumn, from mid-September to November, is initially warm, and then gradually becomes milder, with Atlantic weather fronts becoming gradually more frequent. Occasionally, the rains are concentrated in a short time and can be heavy.

The amount of sunshine in Alicante is very good in summer, when clear skies prevail, but it is also good in the other seasons: there is an average of 6 hours of sunshine per day even in January, and 7 in February. Here are the average sunshine hours per day.
Alicante - Sunshine


The sea in Alicante is warm enough for swimming from July to September, when it reaches 25/26 °C (77/79 °F), so, more than in other parts of Spain. In June and October, it is cool. Here are the temperatures of the sea.
Alicante - Sea temperature
Temp (°C)151414161922252625231917
Temp (°F)595757616672777977736663

Best Time

The best time for a beach holiday in Alicante is the summer, from June to August. The water temperature is comfortable enough July to September, although in September, which overall is still a good month (especially in the first half), the first Atlantic frontal systems may pass over the area. May and June are sunny months, but the sea is still a bit cool, especially in May, when it is actually a bit cold.
Although good weather is not always guaranteed, spring and autumn are ideal for visiting the city and going on excursions to the interior, while the summer can be very hot for this type of activity.