Best Time to See Bees in California

May, April and June is the best time to see bees in California. Based on 402,242 verified iNaturalist observations, here is exactly when bees are most active across the year in California.

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By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.

Silver-tailed Petalcutter photographed in CaliforniaAnthophora hololeuca photographed in CaliforniaValley Carpenter Bee photographed in California
Photos by iNaturalist observers, used under Creative Commons.
Best months: May, April, June

402,242 verified observations of bees in California, recorded across 12 months of the year on iNaturalist.

When bees are recorded in California

Peak month

May

73,981 records (18.4% of the year)

Quietest month

December

5,187 records

MonthObservationsShare
January7,1981.8%
February13,4003.3%
March36,1639%
Aprilpeak71,40617.8%
Maypeak73,98118.4%
Junepeak65,35416.2%
July47,26811.8%
August34,0048.5%
September24,4026.1%
October15,8863.9%
November7,9932%
December5,1871.3%

Bees you are most likely to see

SpeciesVerified observations
Western Honey Bee90,989
Yellow-faced Bumble Bee33,342
Black-tailed Bumble Bee13,135
Valley Carpenter Bee12,275
Horse-fly Carpenter Bee8,900
Tripartite Sweat Bee7,733
Fine striped sweat bee6,112
California Bumble Bee6,078

Sightings of bees in California peak in May, when 73,981 of the year's 402,242 verified observations are logged — about 18.4% of the annual total. Activity stays high through May, April and June.

The quietest stretch is December and January, when bees are hardest to find — December sees just 5,187 records. If a reliable sighting matters, plan around the peak window rather than the off-season.

The bees you are most likely to encounter in California are Western Honey Bee, Yellow-faced Bumble Bee and Black-tailed Bumble Bee — the most-recorded species in the state. Each keeps its own seasonal rhythm, but the month-by-month pattern above reflects every reported sighting together.

Where to go

Best places to see bees in California

  • Alcatraz Island
  • Cabrillo National MonumentNational Monument
  • Channel Islands National ParkNational Park
  • Death Valley National ParkNational Park
  • Devils Postpile National MonumentNational Monument
  • Golden Gate National Recreation AreaNational Recreation Area
Plan your tripAlcatraz Island

Plan your bee trip in California

Start with live tours near Alcatraz Island, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Frequently asked questions

What is the best month to see bees in California?+

May is the single best month, and the broader peak window runs through May, April and June, based on 402,242 verified iNaturalist observations.

When are bees hardest to see in California?+

December is the quietest month for bees in California, with only 5,187 verified records.

Are bees active year-round in California?+

Bees are recorded in 12 of 12 months in California, so they can be seen year-round, with a clear peak in May.