San Clemente

Planning your day in San Clemente? Here you will find the latest weather information, including current conditions, forecasts, and helpful charts to make your stay as comfortable as possible.

The climate in San Clemente, USA, is best described as Mediterranean, featuring mild, relatively wet winters and warm, very dry summers. Comfortable temperatures prevail throughout the year without sharp fluctuations, making the city a great destination at any time.

The summer months, especially from June to September, are characterized by plenty of sunshine, average temperatures around 20-23°C, and almost no rainfall. Winter, from December to March, is mild, with average temperatures around 13-14°C. Most of the annual precipitation falls during this period, though the total amount remains small and rainy days are few.

One of the defining features of San Clemente's weather is the pronounced dry season from May to October, when rain is a rarity. This provides ideal conditions for beach holidays and outdoor activities. Overall, the local weather promotes a pleasant getaway, offering plenty of warmth and sun, particularly in the summer, while avoiding the winter chill.

The climate in San Clemente is characterized by mild temperatures year-round, making it an attractive destination for travelers. The annual average temperature ranges from approximately 13.1°C in February to 23.3°C in August. The hottest months are traditionally July and August, when average maximum temperatures reach 26-27°C. The coolest months are January and February, with an average minimum temperature of about 9°C and average daytime temperatures around 13-14°C.

The summer period, spanning from June to September, offers very comfortable weather. Average temperatures during this time vary from 19.6°C in June to 23.3°C in August. Daytime highs often rise to a pleasant 23-27°C, creating ideal conditions for beach relaxation and outdoor activities. Summer months also feature minimal precipitation, guaranteeing plenty of sunny days.

Winter in San Clemente, from December to February, is mild and frost-free. Average temperatures in these months fluctuate between 13-14°C. At night, temperatures drop to an average of 9-10°C, while during the day, the air warms up to 17-18°C. Although winter is the coolest season, the weather remains comfortable enough for walking and sightseeing. Temperature fluctuations between day and night are moderate throughout the year, usually around 7-9°C, providing a pleasant freshness in the evenings even after warm days.

San Clemente experiences distinct seasonality in its precipitation patterns. The city is characterized by dry summers and wetter winters. Most of the rainfall occurs during the winter months, while rain is extremely rare from late spring to early autumn.

The wettest months are February and March, with an average of 3 mm of precipitation. March stands out with the highest number of rainy days—about 10. January and December also bring some rain, around 2 mm, with 6 and 5 rainy days respectively. Given the low monthly averages, precipitation usually takes the form of light or moderate rain rather than heavy downpours. Based on temperature data, snow is not typical for San Clemente.

The dry season in San Clemente lasts from May to October. During this period, rainfall amounts are near zero. July is the driest month, typically recording no rainy days or precipitation at all. May, June, August, September, and October are also practically rain-free, with 0 mm of precipitation and only 1-3 days when slight drizzle might occur. April and November are transitional months with minimal rainfall (1 mm) and about 3 rainy days.

When planning a trip to San Clemente, it is worth considering its pleasant Mediterranean climate. Regardless of the season, sunscreen, sunglasses, and a hat will be your best friends, as there are many sunny days here. Comfortable walking shoes for exploring the city and the coastline are a must. Layering is the best approach for San Clemente, as even on warm days, the evenings can be cool, especially due to the proximity of the ocean.

In summer, from June to September, when average temperatures hover around 20-23°C and highs can reach 27°C, pack light and breathable clothing: T-shirts, shorts, sundresses, and, of course, swimwear for the beach. Precipitation is virtually non-existent during this time. A light sweater or cardigan will come in handy for evening strolls. In winter, from December to March, the weather remains mild with average temperatures around 13-14°C. Daytime temperatures can rise to 17-18°C, while dropping to 9-10°C at night. Bring jeans, sweaters, a fleece, and a light jacket. Although rainfall is low (2-3 mm per month, 6-10 rainy days), a small folding umbrella or a light waterproof jacket may be useful, especially from January to March.

During the shoulder seasons—spring (April-May) and autumn (October-November)—the weather is very comfortable, with average temperatures ranging from 15°C to 20°C. Layering is particularly relevant now: T-shirts paired with long-sleeved shirts or light sweaters, and a mid-season jacket. It can be warm enough for light clothing during the day, but you'll need something warmer for the mornings and evenings. Regardless of the time of year, a light scarf or pashmina can add comfort during windy days on the coast.