Portlock climate

Portlock Weather in January

NOAA 1991-2020 normals for Waimanalo Exp F 795.1, 7.2 km from Portlock

Average highs run from 78°F on January 1 to 78°F on January 31, and lows from 66°F to 65°F. Normal precipitation for the month is 4.79 in over about 16 wet days.

January day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Portlock, in °F, with the record for each date.5060708090151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

January at a glance

Average high
78°F
Average low
65°F
Precipitation
4.79 in
Record high
89°FJan 3, 1984
Record low
54°FJan 17, 2003
Chance of a freeze
0%
Daylight
10 h 52 min to 11 h 13 min
Cloud cover
51%
Humidity
75%
Dew point
65°F
Wind
13.2 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Jan 178°F66°F87°F 198160°F 197356%
Jan 278°F66°F84°F 198960°F 200256%
Jan 378°F65°F89°F 198460°F 194255%
Jan 478°F65°F88°F 198459°F 200255%
Jan 578°F65°F85°F 197960°F 194755%
Jan 678°F65°F85°F 198458°F 199754%
Jan 778°F65°F87°F 198460°F 197154%
Jan 878°F65°F85°F 198460°F 194953%
Jan 978°F65°F87°F 198458°F 201153%
Jan 1078°F65°F86°F 198458°F 200353%
Jan 1178°F65°F84°F 197758°F 201152%
Jan 1278°F65°F83°F 198861°F 199652%
Jan 1378°F65°F87°F 198060°F 201052%
Jan 1478°F65°F86°F 198157°F 199851%
Jan 1578°F65°F87°F 198161°F 194351%
Jan 1678°F65°F87°F 198059°F 200351%
Jan 1778°F65°F87°F 202354°F 200351%
Jan 1878°F65°F87°F 202461°F 200950%
Jan 1978°F65°F87°F 197460°F 200950%
Jan 2078°F65°F88°F 198860°F 194350%
Jan 2178°F65°F85°F 197359°F 200350%
Jan 2278°F65°F87°F 198859°F 200349%
Jan 2378°F65°F87°F 202462°F 194849%
Jan 2478°F65°F85°F 202360°F 194849%
Jan 2578°F65°F87°F 202461°F 194849%
Jan 2678°F65°F89°F 202461°F 199849%
Jan 2778°F65°F87°F 202461°F 194849%
Jan 2878°F65°F86°F 197462°F 197149%
Jan 2978°F65°F85°F 202461°F 194749%
Jan 3078°F65°F86°F 198159°F 199848%
Jan 3178°F65°F84°F 202455°F 199848%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Portlock, in percent.02040601102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (HST).

January 1
sunrise 7:09 AM, sunset 6:01 PM
January 31
sunrise 7:08 AM, sunset 6:21 PM

Every day of January: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00519523 (Waimanalo Exp F 795.1), public domain. Records: NOAA GHCN-Daily, station USW00022519, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.