San Luis Potosí Weather in September

San Luis Potosí in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 14°C (57°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in San Luis Potosí in September

Being the wettest month, having an umbrella on standby can help you avoid getting caught in the rain. Typically, about 7 days will experience rainfall, with an average of 102 mm (4 in) for the month. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.

Temperature in San Luis Potosí in September

Daytime temperatures in San Luis Potosí reach 25°C (77°F) in September, dropping to 14°C (57°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in San Luis Potosí in September

Expect a lot of sunshine this month, with about 195 hours of sun. These sunny conditions add to the overall experience.

If you prefer enjoying temperate temperatures and rain-free days, January, February, March, April, June, July, August, October, November and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Mexico, check out our San Luis Potosí's climate page.

San Luis Potosí Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 22%  

Precipitation 102 mm (4 in)  

Rainy days 7 days  

Humidity 69%  

Sunshine 195 hours  

Percentage Sunshine  

What to Wear in San Luis Potosí in September

For San Luis Potosí in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in San Luis Potosí in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Mexico, check out our San Luis Potosí's climate page.

More climate data for San Luis Potosí

Temperature Rainfall Sunshine Humidity

See the full San Luis Potosí climate overview or explore weather in Mexico.