Weather in San Luis Potosí

Planning your day in the city of San Luis Potosí? Here you will find the latest weather information, including detailed forecasts and charts to help you better prepare for your trip.

The climate in San Luis Potosí can be characterised as temperate and semi-arid. The city enjoys a large number of sunny days throughout the year. Temperatures here are quite comfortable, without extreme heat or cold; however, one should be prepared for significant daily fluctuations: days are usually warm and pleasant, while nights can be quite cool, especially during the winter months.

Two seasons are clearly distinguished in the city. The dry season, lasting roughly from November to April, is the sunniest and driest period. At this time, rain is a rarity, making it ideal for walking and exploring the sights. From May to October comes the rainy season. Despite the name, the total amount of precipitation remains small, and rains usually occur as short showers in the afternoon, bringing refreshing coolness during the warmest months of the year.

The climate in San Luis Potosí can be described as semi-arid and temperate, with pleasant temperatures throughout most of the year. There is no extreme heat or severe cold here, making the city comfortable to visit in any season. The hottest month is May, when the average temperature is around 22.1°C, and daily highs regularly reach 29-30°C. The coolest months are December and January, with an average temperature of about 13.7°C, though even at this time, the days remain warm.

One of the key features of the weather in San Luis Potosí is the significant diurnal temperature variation. This is especially noticeable in the dry season (from October to May), when the difference between day and night readings can exceed 15°C. Summer, which coincides with the rainy season (from June to September), slightly softens these fluctuations. During this period, daytime temperatures hover around 25-27°C, and nights remain warm with temperatures around 15°C. Winter here is mild and sunny: during the day the air warms up to a comfortable 21-24°C, but after sunset it becomes cool, and the temperature can drop to 6-7°C. Therefore, tourists are advised to carry both light clothing for daytime walks and warm items for the evenings.

In the city of San Luis Potosí, a clear division into two seasons is observed: a long and very dry period and a short, moderately humid summer season. The climate is generally arid, and even in the wettest months, the amount of precipitation remains insignificant.

The dry season covers most of the year, from November to April. During this time, rain is a great rarity. According to data, in many of these months not a single millimetre of precipitation falls, and the number of rainy days ranges from two to four per month. This makes the weather very predictable and ideal for walking and excursions.

The rainy season begins in May and continues until October. The frequency of precipitation during this period increases noticeably, reaching its peak in September, when there are on average about 14 rainy days, and in June (about 13 days). Despite this, the total amount of rainfall remains low, indicating that rains are typically short-lived showers rather than prolonged downpours. Snow is uncharacteristic for this region.

When planning a trip to San Luis Potosí, it is important to consider its changeable climate with noticeable temperature shifts throughout the day. The key to a comfortable journey is layering your clothing. The foundation of your wardrobe should be light items: T-shirts, blouses, and shirts. Be sure to bring a sweater, fleece, or light jacket, which will come in handy on cool mornings and evenings, especially during the winter months from December to February. Regardless of the season, you will need comfortable shoes for walking along the cobbled streets of the historic centre, as well as sunscreen, a hat, and sunglasses, since the sun is active here all year round.

Your wardrobe should be adapted depending on the season of your visit. The dry season, which lasts roughly from November to April, is characterised by sunny days and minimal rainfall. During this period, layered clothing is especially important. The rainy season, from June to October, brings warmer weather but with frequent, though usually short, showers in the afternoon. If you are travelling at this time, be sure to pack a light waterproof jacket or compact umbrella in your suitcase. Despite the rain, the sun often appears, so sun protection remains a mandatory attribute.