Weather on April 21 at Haleakala

Haleakala National Park

HIIslands & Territories7,000 ft elevation
Avg High83°F
Avg Low67°F
Warmest201982°F
Coldest197170°F

Based on 54 years of data from Kahului, HI

Elevation Note: Haleakala sits at 7,000 ft. Expect temperatures 25°F cooler than the data shown below, which comes from Kahului, HI at a lower elevation.

Planning Your Visit

April 21st in Haleakala National Park (via Kahului, HI) typically brings warm spring weather, with average highs around 83°F and lows near 67°F. Over 54 years of records, the warmest April 21st was in 2019 (82°F average), while the coldest was 1971 (70°F) — a 12°F range across recorded history. Rain or other precipitation has occurred on about 30% of April 21st dates historically, with the wettest April 21st recording 3.76" of rain. The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.

The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.

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

Year by Year History

YearHighLowPrecipSnow
202585°F63°F0"--
202388°F67°F0"--
202287°F70°F0"--
202186°F66°F0"--
202087°F63°F0"--
201990°F74°F0"--
201884°F71°F0"--
201788°F71°F0.81"--
201686°F69°F0.03"--
201586°F67°F0"--
201481°F70°F0.48"--
201385°F63°F0"--
201282°F67°F0"--
201187°F62°F0"--
201084°F62°F0"--
200974°F66°F0.66"--
200886°F61°F0"--
200784°F68°F0.03"--
200681°F67°F0.03"--
200585°F62°F0"--
200486°F64°F0"--
200381°F68°F0"--
200286°F65°F0"--
200183°F60°F0"--
200081°F67°F0.03"--
199986°F60°F0"--
199885°F64°F0"--
199787°F63°F0"0"
199685°F72°F0"0"
199583°F72°F0"0"
199480°F70°F0.43"0"
199382°F71°F0"0"
199285°F65°F0"0"
199182°F60°F0"0"
199082°F70°F0"0"
198981°F67°F0"0"
198883°F69°F0"0"
198780°F65°F3.76"0"
198683°F69°F0"0"
198581°F59°F0"0"
198486°F73°F0"0"
198381°F67°F0"0"
198280°F68°F0.51"0"
198188°F67°F0"0"
198083°F70°F0.25"0"
197982°F66°F0.43"0"
197886°F68°F0.23"0"
197778°F69°F0"0"
197678°F67°F0.08"0"
197578°F67°F0"0"
197485°F71°F0.03"0"
197385°F61°F0"0"
197278°F66°F0"0"
197173°F67°F0.76"0"

April 21 at Nearby Parks

Holiday Weather at Haleakala

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

Explore More at Haleakala

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