What is the weather like in Indiana Dunes National Park vs Mammoth Cave National Park in May?

In May, Indiana Dunes National Park averages 18°C high / 11°C low with about 114 mm of rain; Mammoth Cave National Park averages 27°C high / 14°C low with about 147 mm.

Indiana Dunes National Park vs Mammoth Cave National Park in May

Indiana Dunes National Park is the better pick in May — 87 vs 77 on SeasonMap's comfort score. Indiana Dunes National Park is nice, rainy, muggy air, while Mammoth Cave National Park is warm, rainy, clean air.

Indiana Dunes National Park vs Mammoth Cave National Park — May climate, side by side

	🇺🇸 Indiana Dunes National Park	🇺🇸 Mammoth Cave National Park
Comfort score	87/100 (A)	77/100 (B)
Feels-like high	18°C	28°C
Avg high / low	18° / 11°	27° / 14°
Rainfall	114 mm	147 mm
Rainy days	12	12
Humidity	78%	74%
Air quality (AQI)	51	47

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Indiana Dunes National Park vs Mammoth Cave National Park in May — FAQ

Is May better in Indiana Dunes National Park or Mammoth Cave National Park?: Indiana Dunes National Park is the better pick in May — 87 vs 77 on SeasonMap's comfort score. Indiana Dunes National Park is nice, rainy, muggy air, while Mammoth Cave National Park is warm, rainy, clean air.
What is the weather like in Indiana Dunes National Park vs Mammoth Cave National Park in May?: In May, Indiana Dunes National Park averages 18°C high / 11°C low with about 114 mm of rain; Mammoth Cave National Park averages 27°C high / 14°C low with about 147 mm.