Kaʻala

Mountain Highest summit on Oʻahu, significant Hawaiian 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.

Main image
Main image

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.
Kaʻala
Mount Kaʻala, Waianae Range, Oʻahu, Hawaii, USA
21.5077, -158.1423
Free

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.

Temperature & Rainfall
Temperature Range
23°
Warmest Month
12°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 20°C and lows of 12°C. Heavy rain (323 mm).

Comfort

16°
Feels Like Cool
16°C
Temperature
12° 20°

Weather

323 mm
Rainfall
4.1 m/s
Wind
Light Breeze

February

February is cool with highs of 20°C and lows of 12°C. Heavy rain (252 mm).

Comfort

16°
Feels Like Cool
16°C
Temperature
12° 20°

Weather

252 mm
Rainfall
4.5 m/s
Wind
Light Breeze

March

March is cool with highs of 20°C and lows of 13°C. Heavy rain (405 mm).

Comfort

16°
Feels Like Cool
16°C
Temperature
13° 20°

Weather

405 mm
Rainfall
4.7 m/s
Wind
Light Breeze

April

April is cool with highs of 20°C and lows of 14°C. The wettest month with heavy rain (549 mm).

Comfort

17°
Feels Like Cool
17°C
Temperature
14° 20°

Weather

549 mm
Rainfall
4.8 m/s
Wind
Light Breeze

May

May is cool with highs of 21°C and lows of 15°C. Heavy rain (366 mm).

Comfort

18°
Feels Like Cool
18°C
Temperature
15° 21°

Weather

366 mm
Rainfall
4.3 m/s
Wind
Light Breeze

June

June is mild with highs of 22°C and lows of 16°C. Significant rainfall (183 mm).

Comfort

19°
Feels Like Mild
19°C
Temperature
16° 22°

Weather

183 mm
Rainfall
4.5 m/s
Wind
Light Breeze

July

July is mild with highs of 22°C and lows of 16°C. Significant rainfall (164 mm).

Comfort

20°
Feels Like Mild
20°C
Temperature
17° 23°

Weather

164 mm
Rainfall
5.0 m/s
Wind
Light Breeze

August

August is the warmest month with highs of 23°C and lows of 16°C. Heavy rain (253 mm).

Comfort

20°
Feels Like Mild
20°C
Temperature
16° 23°

Weather

253 mm
Rainfall
4.7 m/s
Wind
Light Breeze

September

September is mild with highs of 23°C and lows of 16°C. Heavy rain (212 mm).

Comfort

20°
Feels Like Mild
20°C
Temperature
16° 23°

Weather

212 mm
Rainfall
4.2 m/s
Wind
Light Breeze

October

October is mild with highs of 23°C and lows of 15°C. Heavy rain (212 mm).

Comfort

19°
Feels Like Mild
19°C
Temperature
15° 23°

Weather

212 mm
Rainfall
4.1 m/s
Wind
Light Breeze

November

November is cool with highs of 22°C and lows of 14°C. Heavy rain (332 mm).

Comfort

18°
Feels Like Cool
18°C
Temperature
14° 22°

Weather

332 mm
Rainfall
4.5 m/s
Wind
Light Breeze

December

December is cool with highs of 20°C and lows of 13°C. Heavy rain (381 mm).

Comfort

17°
Feels Like Cool
17°C
Temperature
13° 20°

Weather

381 mm
Rainfall
4.4 m/s
Wind
Light Breeze

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