Big Bear Lake Weather in May

What's the weather like in Big Bear Lake (California) in May 2025?

The climate in Big Bear Lake during May can be summarized as mild and dry.

May is in the spring in Big Bear Lake and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 18°C (65°F), whilst at night 3°C (38°F) is normal.

Big Bear Lake weather averages (imperial / metric)
Daytime temperature 18.3°C 64.9°F
Nightly temperature 3.3°C 37.9°F
Average temperature 10.8°C 51.4°F
Daily sunshine 10.3 hrs
Avg rainfall 27 mm 1.1 ins
Rainy days 2 days
Sea temperature 15.5°C 59.9°F
Humidity 49%
Windspeed 16.6kph 10 mph

On average May is the 4th driest month of the year in Big Bear Lake with around 27mm 1.1 inches of rain making it a dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.3 hours of sunshine per day.

May temperatures in Big Bear Lake

Big Bear Lake average temperature in May

May rainfall

Big Bear Lake average rain in May

May hourly sunshine

Big Bear Lake average rain in May

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Big Bear Lake in May 2025.