Weather on March 21 at Hawaii Volcanoes

Hawaii Volcanoes National Park

HIIslands & Territories4,000 ft elevation
Avg High80°F
Avg Low65°F
Warmest202378°F
Coldest200268°F

Based on 56 years of data from Hilo, HI

Elevation Note: Hawaii Volcanoes sits at 4,000 ft. Expect temperatures 14°F cooler than the data shown below, which comes from Hilo, HI at a lower elevation.

Planning Your Visit

March 21st in Hawaii Volcanoes National Park (via Hilo, HI) typically brings warm spring weather, with average highs around 80°F and lows near 65°F. Over 56 years of records, the warmest March 21st was in 2023 (78°F average), while the coldest was 2002 (68°F) — a 10°F range across recorded history. Rain or other precipitation has occurred on about 75% of March 21st dates historically, with the wettest March 21st recording 4.32" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.

The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.

Planning for March 21st in Hawaii Volcanoes? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202683°F69°F0.79"--
202582°F64°F0.08"--
202479°F64°F0.58"--
202386°F69°F0.58"--
202285°F67°F0.03"--
202179°F67°F0.84"--
202078°F69°F0.3"--
201979°F64°F0.2"--
201880°F68°F0.86"--
201784°F66°F0"--
201682°F67°F0.13"--
201582°F66°F0.71"--
201480°F66°F4.32"--
201384°F64°F0.05"--
201280°F64°F0.66"--
201182°F63°F0.43"--
201077°F61°F3.28"--
200978°F65°F2.41"--
200877°F66°F0.71"--
200782°F62°F0"--
200681°F66°F0.08"--
200582°F68°F0.36"--
200481°F66°F3.78"--
200381°F67°F0.3"--
200274°F63°F0"--
200177°F63°F0.46"--
200079°F65°F0.05"--
199975°F66°F1.75"--
199882°F65°F0.03"--
199783°F63°F0"0"
199677°F64°F0.18"0"
199582°F67°F1.04"0"
199475°F66°F1.52"0"
199382°F64°F0"0"
199279°F64°F0"0"
199180°F66°F0.58"0"
199081°F63°F0"0"
198982°F62°F0"0"
198878°F65°F0.23"0"
198778°F62°F1.17"0"
198679°F68°F3.94"0"
198577°F62°F1.14"0"
198483°F66°F0"0"
198382°F65°F0"0"
198282°F64°F0"0"
198180°F60°F0"0"
198082°F66°F1.22"0"
197976°F64°F0.64"0"
197879°F64°F0.79"0"
197780°F65°F1.09"0"
197680°F67°F0.86"0"
197580°F61°F0"0"
197487°F66°F0"0"
197377°F65°F1.85"0"
197283°F65°F0.05"0"
197186°F63°F0.05"0"

March 21 at Nearby Parks

Holiday Weather at Hawaii Volcanoes

Official NPS WebsiteVisit nps.gov/havo for park information, alerts, and reservations

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