Main image

U.S. Geological Survey CC BY-SA 4.0 Wikimedia Commons

Kaʻala

Mountain

The highest peak on Oahu's Waianae Range, Ka'ala is reached by steep trails through native forest; hikers aim for ridge views over the leeward coast and island interior.

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In this guide

Kaʻala essentials

Address: Mount Kaʻala, Waianae Range, Oʻahu, Hawaii, USA
Admission: Free

About Kaʻala

Kaʻala (Mount Kaʻala) is the highest summit of the Waianae Range on the Hawaiian island of Oʻahu, and the island’s highest point. The mountain forms a prominent peak on Oʻahu’s western ridge and is an important watershed area.

The summit area contains communications and military facilities and patches of native forest; access to the summit is restricted in parts because of installations and conservation measures. Hikers use established trails on the Waianae side, with routes that gain significant elevation and require good fitness and preparation.

The mountain has long-standing cultural significance in Hawaiian tradition and today is managed with attention to ecological protection of native flora and fauna as well as safety around summit installations.

Mount Kaʻala stands in the western part of Oʻahu within the island’s Waianae Range and dominates the surrounding central and leeward landscapes; it is a prominent landmark visible from much of the island’s western side.

  • Elevation: At 1,227 metres (4,025 feet) it is the highest point on the island of Oʻahu, offering expansive views across the island from the Waianae Range.
When to Go

Best Time to Visit Kaʻala

Hike Kaʻala in the drier months (roughly Apr-Oct) when trails are less muddy and rainfall is lower.

Dry season (best for hikes)
Apr-Oct · 20-28°C (lowlands); 10-18°C (summit)
Lower rainfall and drier trails make summit approaches safer and less muddy - the preferred time for hiking.
Wet season
Nov-Mar · 19-26°C (lowlands); cooler and wetter at elevation
Increased rainfall makes trails muddy and slippery; summit conditions can be wet and visibility reduced.

Weather & Climate near Kaʻala

Climate

Kaʻala's climate is classified as Oceanic - Oceanic climate with consistently warm temperatures year-round. Temperatures range from 12°C to 23°C. Heavy rainfall (3632 mm/year), wettest in April.

Air Quality: AQI 15 Good
Temperature & Rainfall
Temperature Range
23°
Warmest Month
12°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - 12° - 20° 16° 323 mm - - 4.1 m/s - -
February - 12° - 20° 16° 252 mm - - 4.5 m/s - -
March - 13° - 20° 16° 405 mm - - 4.7 m/s - -
April - 14° - 20° 17° 549 mm - - 4.8 m/s - -
May - 15° - 21° 18° 366 mm - - 4.3 m/s - -
June - 16° - 22° 19° 183 mm - - 4.5 m/s - -
July - 17° - 23° 20° 164 mm - - 5.0 m/s - -
August - 16° - 23° 20° 253 mm - - 4.7 m/s - -
September - 16° - 23° 20° 212 mm - - 4.2 m/s - -
October - 15° - 23° 19° 212 mm - - 4.1 m/s - -
November - 14° - 22° 18° 332 mm - - 4.5 m/s - -
December - 13° - 20° 17° 381 mm - - 4.4 m/s - -