Current Conditions
Temp2.8 C
RH6 %
WindESE 29 mph
RoadOpen (4x4 only)
Road Status: Open (4-Wheel Drive Only)

Friday, November 20, 2015 - 01:29 p.m.


After performing remedial work and grading, the summit access road is re-opened to the public. Vehicular access above Halepohaku area will be by 4-wheel drive only and no-2-wheel drive vehicles will be allowed past the end of the paved road.
This announcement is primarily used to inform the public about road closures.

The Maunakea Rangers thank you for your patience and understanding.

There are fewer weather related road closures from April through November, and this message will not be updated during this time period unless necessary.

The rest of this website is regularly updated with the summit weather forecast and is a useful source of current Maunakea weather conditions.

More Information: Mauna Kea weather varies widely. A calm sunny day may quickly become treacherous with hurricane force winds and blizzard conditions. Summit winds above 120 mph are not uncommon. Snowstorms have even occurred during the summer months.

When conditions are too dangerous, the Summit Access road is closed at the Visitor Information Station to ensure everyone's safety. The road is re-opened as soon as the weather and the roads are safe again.

Traffic delays and road closures on the summit access road may also occur due to the use and transport of heavy equipment, slow vehicle movements, deliveries, road maintenance, stalled or abandoned vehicles, hikers and bikers. Remember that dust, fog or snow can reduce visibility and slow traffic. Specific road closure criteria is listed below:

1. Any ice or snow on the road.
2. Winds greater than 55 mph for one hour and/or gusts greater than 65 mph.
3. Visibility less than 50 feet.
4. Any emergent condition that makes the road unsafe for travel.

Mahalo for your understanding.

Public road conditions and snow report message: (808) 935-6268
Summit Road Surface Observations

Date - TimeConditionGrip Surface Temperature
Nov 28, 2015 - 2055 HSTDryGood -1.7 oC
The conditions above represent a 1 foot diameter section of road on the summit and you should not assume conditions on the rest of the road are the same. For more details, see Summit Road Surface Observations.
Summit Weather via the CFHT/GEMINI WX Tower and SUBARU

Most Recent Previous 24 hours Options

Nov 28 2015, 20:55 HST Minimum Maximum UTC | HST
Temperature 2.8 oC 0.3 oC @ 06:11 7.3 oC @ 13:19 oC | K | F
Wind Chill -4.1 oC -6.1 oC @ 06:11 0.2 oC @ 15:25 oC | K | F
Relative Humidity 6% 5% @ 18:38 96% @ 07:42
Pressure 619 mb 617 mb @ 16:07 620 mb @ 22:11
Wind speed 29 mph 0 mph @ 05:53 38 mph @ 19:37 mph | Kts | m/s
Wind direction ESE

dir | deg
Precipitation (as of 8 am) 0.00 mm

mm | inches
Fog No

Random Web Cams

IRTF1 (Aimed West)

VLBA (Aimed South)

JCMT (Aimed Variable)

Check the MKWC Current Obs page for additional weather observations and the MKWC Web Cams page for more mountain cams.
Latest Mountain Warnings and Forecasts

Current MKWC Warning(s) - (Latest Forecast)
Small/Moderate chances for short episodes of high RH
Current HNL NWS Mountain Bulletin(s) - (Latest Forecast)
Non-Precipitation Warning
Additional Information

Visiting Mauna Kea Observatories Information
Road is always closed the morning after a snowfall.
Road is always closed while snow removal equipment is in operation.
Road is closed when the pavement has ice/snow.
Snow removal equipment can only remove snow. Thermal heating is needed to remove the final layer of ice that usually forms under the snow.
Other information for visitors to Mauna Kea, including safety, summit tours, and public star-gazing.