San Marcos Weather in September

San Marcos in September sees high temperatures, with highs around 30°C (86°F) and overnight lows of 16°C (61°F). With just 4.6 mm (0.2 in) of rainfall on average, rain is rarely an issue.

Rainfall in San Marcos in September

Historically, the month has about a single day of rain, averaging 4.6 mm (0.2 in) in total. On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in San Marcos in September

September is a good time to be in San Marcos. Days are excellent, reaching 30°C (86°F), with nights around 16°C (61°F). Overall, the month follows a fairly predictable daily temperature pattern. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. This is typically the warmest month of the year, so light summer clothing is a good idea.

Sunshine in San Marcos in September

Expect a lot of sunshine this month, with about 253 hours of sun. These sunny conditions add to the overall experience.

September in San Marcos has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.