Shamrock Island Preserve

Sky Score 33/100≈ Bortle 4

Shamrock Island Preserve is a protected area in Texas with a measured darkness of 58/100 (≈ Bortle 4), a usable sky for casual stargazing, though city glow is noticeable. The best month to come is typically October, when about 61% of the night sky is clear.

Tonight's outlook: 35/100. The moon is 7% lit and above the horizon 13% of the night; typical August clear-sky odds here are 50%. Updated daily.

Best time to stargaze at Shamrock Island Preserve

MonthClear night skiesSky Score (new moon)
January43%31/100
February42%31/100
March41%31/100
April40%30/100
May44%32/100
June51%35/100
July49%34/100
August50%35/100
September52%36/100
October61%40/100
November47%33/100
December43%32/100

Scores assume a moonless night, check the moon before you drive (methodology).

Where to stay near Shamrock Island Preserve

Each place below is rated for the darkness at its own doorstep, stay dark, and the sky is yours from the parking lot.

Booking links are affiliate links, see the disclosure.

Nearby spots in Texas