Indiana Dunes National Park vs Indianapolis: which is better, month by month

Indiana Dunes National Park beats Indianapolis in 7 of 12 months — its lead peaks in January (55 vs 41) — while Indianapolis wins September; they are within 3 points in the other 4 months.

Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Indiana Dunes National Park

🇺🇸 United States · mild climate

Best month
May 87/100
Months won
7 of 12

Indianapolis

🇺🇸 United States · mild climate

Best month
September 89/100
Months won
1 of 12

Indiana Dunes National Park vs Indianapolis — all 12 months

MonthIndiana Dunes National ParkIndianapolisWinnerGap
January55Dfreezing, a little rain, clean air41Ffreezing, a little rain, clean airIndiana Dunes National Park14
February61Cfreezing, a little rain, clean air54Dcold, a little rain, clean airIndiana Dunes National Park7
March70Bcold, rainy, clean air63Ccold, rainy, clean airIndiana Dunes National Park7
April79Bcold, rainy, clean air74Bnice, rainy, clean airIndiana Dunes National Park5
May87Anice, rainy, muggy air88Anice, rainy, clean airTie1
June81Awarm, rainy, muggy air79Bhot, rainyTie2
July73Bhot, rainy, muggy air69Chot, rainyIndiana Dunes National Park4
August76Bhot, rainy, muggy air78Bhot, rainyTie2
September84Awarm, a little rain, clean air89Awarm, a little rain, clean airIndianapolis5
October80Acool, rainy, clean air82Anice, a little rain, clean airTie2
November72Bcold, a little rain, clean air64Ccold, a little rain, clean airIndiana Dunes National Park8
December63Cfreezing, a little rain, clean air49Fcold, a little rain, clean airIndiana Dunes National Park14

A month is a tie when the two are within 3 points. The widest gap is January (55 vs 41). Tap a month for that month's temperature, rain, humidity and air quality side by side.