Best beach weather in the US in September

Ranked by the most beach days in September: highs 80-95°F, under 0.05 in of rain and afternoon wind under 15 mph (cities within 10 mi of a coast or Great Lake). First: East Honolulu, HI (24 days), of 91 cities.

Best beach weather in the US in September
Rank	City	Beach days	High	Wet days
1	East Honolulu, HI	24 days	85°F	12
2	Destin, FL	23 days	89°F	8
3	Gulfport, MS	22 days	87°F	9
4	Costa Mesa, CA	21 days	84°F	1
5	Huntington Beach, CA	21 days	84°F	1
6	Irvine, CA	21 days	84°F	1
7	Hilton Head Island, SC	21 days	86°F	10
8	Mobile, AL	20 days	89°F	11
9	Panama City Beach, FL	20 days	89°F	10
10	Spring Hill, FL	20 days	90°F	14
11	Tampa, FL	20 days	90°F	13
12	League City, TX	20 days	88°F	11
13	Gulf Shores, AL	20 days	88°F	11
14	Galveston, TX	20 days	89°F	10
15	Solvang, CA	19 days	91°F	1
16	Myrtle Beach, SC	19 days	83°F	9
17	Daytona Beach, FL	18 days	87°F	15
18	St. Simons Island, GA	18 days	86°F	11
19	Charleston, SC	18 days	83°F	9
20	St. Augustine, FL	17 days	87°F	14
21	Wilmington, NC	17 days	84°F	11
22	Long Beach, CA	17 days	82°F	1
23	Key West, FL	17 days	89°F	16
24	North Charleston, SC	17 days	83°F	10
25	South Padre Island, TX	17 days	89°F	11

Which states lead

Florida (7 of the top 25), California (5 of the top 25), South Carolina (4 of the top 25), then 6 more states. The top 25 range from 24 days to 17 days; the median across all 91 cities is 10 days.

The other end: fewest beach days in September

Best beach weather through the year

Month	First place	Beach days
January	Honolulu, HI	15 days
February	Key Largo, FL	15 days
March	Key Largo, FL	17 days
April	Cape Coral, FL	22 days
May	Tampa, FL	25 days
June	East Honolulu, HI	24 days
July	East Honolulu, HI	25 days
August	Costa Mesa, CA	27 days
September	East Honolulu, HI	24 days
October	East Honolulu, HI	24 days
November	East Honolulu, HI	19 days
December	Key Largo, FL	17 days

91 cities with data for this measure. Folded suburbs share their lead city's values and are not listed separately. Methodology.