Climateby Month

Haleiwa, HI climate by month

NOAA 1991-2020 normals · 10 ft elevation

Haleiwa is warm and humid year-round, with normal highs between 78°F in January and 86°F in August. Wet days are spread through the year, from about 17 to 25 a month. By our comfort score the best months are January, February and March.

Warmest month
86°F
August normal high
Coldest month
62°F
February normal low
Wet days a year
259
52.0 in of precipitation
Muggy days a year
212
dew point 65°F or higher

How warm is Haleiwa?

Normal highs range from 78°F in January to 86°F in August.

60°70°80°90° January: normal high 78°F (26°C), low 62°F (17°C) 78° 62° February: normal high 79°F (26°C), low 62°F (17°C) March: normal high 79°F (26°C), low 64°F (18°C) April: normal high 81°F (27°C), low 65°F (18°C) May: normal high 83°F (28°C), low 67°F (19°C) June: normal high 84°F (29°C), low 69°F (21°C) July: normal high 85°F (29°C), low 70°F (21°C) August: normal high 86°F (30°C), low 70°F (21°C) 86° 70° September: normal high 86°F (30°C), low 70°F (21°C) October: normal high 84°F (29°C), low 69°F (21°C) November: normal high 81°F (27°C), low 67°F (19°C) December: normal high 79°F (26°C), low 65°F (18°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Haleiwa?

December has the most wet days (about 25); the year brings about 52 in of precipitation.

January: 19 wet days February: 17 wet days 17 March: 21 wet days April: 21 wet days May: 20 wet days June: 23 wet days July: 24 wet days August: 22 wet days September: 21 wet days October: 23 wet days November: 24 wet days December: 25 wet days 25 JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is Haleiwa?

Muggy days peak in September, at about 27 days.

January: 10 muggy days February: 8 muggy days 8 March: 9 muggy days April: 10 muggy days May: 15 muggy days June: 20 muggy days July: 25 muggy days August: 27 muggy days September: 27 muggy days 27 October: 27 muggy days November: 21 muggy days December: 14 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Honolulu International Airport, 21 mi SSE of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 10.8 hours in December to 13.4 hours in June.

January: 11.0 hours of daylight February: 11.4 hours of daylight March: 12.0 hours of daylight April: 12.7 hours of daylight May: 13.2 hours of daylight June: 13.4 hours of daylight 13.4 July: 13.3 hours of daylight August: 12.8 hours of daylight September: 12.3 hours of daylight October: 11.7 hours of daylight November: 11.1 hours of daylight December: 10.8 hours of daylight 10.8 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Haleiwa, 1991-2020
MonthHighLowPrecip.Wet daysMuggy daysDaylight
January 78°F62°F 4.7 in19 10 11.0 h
February 79°F62°F 4.0 in17 8 11.4 h
March 79°F64°F 5.6 in21 9 12.0 h
April 81°F65°F 4.2 in21 10 12.7 h
May 83°F67°F 3.6 in20 15 13.2 h
June 84°F69°F 3.5 in23 20 13.4 h
July 85°F70°F 3.9 in24 25 13.3 h
August 86°F70°F 3.2 in22 27 12.8 h
September 86°F70°F 3.3 in21 27 12.3 h
October 84°F69°F 4.4 in23 27 11.7 h
November 81°F67°F 6.1 in24 21 11.1 h
December 79°F65°F 5.5 in25 14 10.8 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Haleiwa

By our comfort score, the best months are January, February and March.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 51690
Feb 54780
Mar 516110
Apr 482110
May 49191
Jun 460112
Jul 450122
Aug 45094
Sep 43094
Oct 420111
Nov 411120
Dec 443110

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Haleiwa

Haleiwa is frost-free: NOAA's 1991-2020 normals record no nights at 32°F or below at Waimea Valley 892.2.

Station: Waimea Valley 892.2 (USC00519603), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Hawaii.

Hottest and coldest readings, 1991-2020

The highest reading was 95°F (May 28, 2003); the lowest was 45°F (February 4, 1993).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Haleiwa

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Waimea Valley 892.2 (USC00519603), 5.0 mi NE of the city center, 41 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: Honolulu Intl Airport (USW00022521), 22 mi SSE of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Honolulu International Airport (911820-22521), 21 mi SSE of the city center, 6 ft . Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error