Climate almanac
Grover Beach
California, United States · 35.12°, -120.62°
What is the climate like in Grover Beach?
The best time to visit Grover Beach is typically April – November, with trip comfort peaking in August (8.9/10). Grover Beach is warmest in September, when daily highs average 70°F (21°C), and coolest in February, when lows fall to about 48°F (9°C). The wettest month is typically January and the driest is July; the year sees roughly 18 in (458 mm) of precipitation.
- Best time to visitApril – November — comfort peaks in August (8.9/10)
- Warmest monthSeptember — average high 70°F (21°C)
- Coolest monthFebruary — average low 48°F (9°C)
- Wettest monthJanuary (4.3 in (110 mm))
- Driest monthJuly (0.1 in (1 mm))
- Annual precipitation18 in (458 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromSan Luis Obispo Poly, 21 km away (1927-2026)