Grover Beach (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grover Beach.
Climate overview of Grover Beach
Grover Beach, California, United States of America, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 20°C (68°F), peaking in September at 23°C (73°F) and dipping in December to 18°C (64°F).
Rainfall is modest, totalling around 297 mm (12 in) annually. The city experiences a distinct dry season from March to November. December tends to be the wettest month. The sunniest month is July, with 11.7 hours of sunshine per day on average.
Grover Beach Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grover Beach - and find the best time to visit.
Monthly Temperature in Grover Beach
With minimal seasonal shifts, Grover Beach experiences a constant climate year-round. Average maximum daytime temperatures range from a comfortable 23°C (73°F) in September, the warmest time of the year, to a moderate 18°C (64°F) during cooler months like December.
At night, you can expect temperatures ranging from 13°C (55°F) in September to around 6°C (43°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Grover Beach
Grover Beach has a relatively dry climate with low precipitation, averaging 297 mm (12 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 69 mm (2.7 in) of precipitation, recorded across 8 rainy days. In contrast, the driest month August brings less rainfall, with 0.2 mm (0.01 in) over 0 rainy days. For more details, please visit our Grover Beach Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Grover Beach
Seasonal changes in sunshine hours are quite dramatic in Grover Beach. While July receives considerable daily sunshine with up to 11.7 hours, January marks the darkest time of the year, where sunshine is scarce with only 6.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Grover Beach
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, April, May, June, July, August, September, October and November
- Warmest weather: August, September and October
- Most sunshine: July and August
- Fewer rainy days: May, June, July, August and September
- Seasonal pattern: A distinct dry season from March to November
Frequently asked questions about the climate in Grover Beach
What is the best time to visit Grover Beach?
March, April, May, June, July, August, September, October and November typically offer the most optimal weather in Grover Beach. In contrast, January, February and December tend to have less optimal conditions. Grover Beach has a distinct dry season from March to November.
What temperatures can I expect in Grover Beach?
Daytime highs range from 18°C (64°F) in December to 23°C (73°F) in September. Nighttime lows range from 6°C (43°F) to 13°C (55°F). Temperatures stay relatively stable year-round.
How much rain does Grover Beach get?
Annual rainfall is around 297 mm (12 in). December is the wettest month with 69 mm (2.7 in), while August is the driest with 0.2 mm (0.01 in).
How sunny is Grover Beach?
Grover Beach receives around 3,187 hours of sunshine per year. July is the sunniest month with 352 hours, while January is the cloudiest with just 208 hours. Overall, Grover Beach enjoys abundant sunshine.
Grover Beach 3-Day Forecast
Grover Beach on the map
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