San Luis

What is the climate like in San Luis?

The best time to visit San Luis is typically September – June, with trip comfort peaking in October (9.3/10). San Luis is warmest in July, when daily highs average 109°F (43°C), and coolest in January, when lows fall to about 48°F (9°C). The wettest month is typically September and the driest is June; the year sees roughly 3.4 in (87 mm) of precipitation.

• Best time to visitSeptember – June — comfort peaks in October (9.3/10)
• Warmest monthJuly — average high 109°F (43°C)
• Coolest monthJanuary — average low 48°F (9°C)
• Wettest monthSeptember (0.7 in (17 mm))
• Driest monthJune (0.0 in (1 mm))
• Annual precipitation3.4 in (87 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromYuma Mcas, 24 km away (1982-2026)