San Luis Obispo

What is the climate like in San Luis Obispo?

The best time to visit San Luis Obispo is typically April – November, with trip comfort peaking in September (9.0/10). San Luis Obispo is warmest in September, when daily highs average 72°F (22°C), and coolest in February, when lows fall to about 48°F (9°C). The wettest month is typically January and the driest is August; the year sees roughly 18 in (464 mm) of precipitation.

• Best time to visitApril – November — comfort peaks in September (9.0/10)
• Warmest monthSeptember — average high 72°F (22°C)
• Coolest monthFebruary — average low 48°F (9°C)
• Wettest monthJanuary (4.7 in (118 mm))
• Driest monthAugust (0.0 in (1 mm))
• Annual precipitation18 in (464 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSan Luis Obispo Poly, 2 km away (1927-2026)