Haleiwa, HI weather in May
In May, Haleiwa sees highs around 83°F and lows around 67°F: warm and often humid, with rain on most days. Expect about 20 wet days. Pack rain gear.
- Normal high
- 83°F
- Normal low
- 67°F
- Wet days
- 20
- 3.6 in total
- Muggy days
- 15
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 82°F | 84°F |
| Normal low | 66°F | 68°F |
| Chance of a wet day | 67% | 65% |
| Sunrise / sunset | 6:01 am / 6:57 pm | 5:49 am / 7:10 pm |
| Daylight | 12.9 h | 13.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Hawaii time (no daylight saving)).
A typical May day
- 6 am72°Fdew point 65°F
- 9 am79°Fdew point 65°F
- Noon83°Fdew point 65°F
- 3 pm83°Fdew point 65°F
- 6 pm79°Fdew point 65°F
- 9 pm76°Fdew point 65°F
NOAA hourly normals (local standard time) from Honolulu Intl Airport (22 mi away); average wind 10 mph; clear or few clouds in 36% of daytime hours, mostly cloudy or overcast in 25%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph11 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more15 of 31
- Wet daysat least 0.01 in of rain or melted snow20 of 31
- Notable rainat least 0.10 in9 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 3.6 in; a dry May brings about 2.3 in and a wet one about 4.3 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How May varies from year to year
- Warmest May, 1991-20202005: average high 87°F
- Coolest May2012: average high 80°F
- Wettest May2011: 9.4 in
- Driest May2009: 0.3 in
- Highest reading95°F (May 28, 2003)
- Lowest reading55°F (May 11, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 81°F | 83°F | 84°F |
| Normal low | 65°F | 67°F | 69°F |
| Wet days | 21 | 20 | 23 |
| Comfortable days | 2 | 1 | 0 |
| Daylight | 12.7 h | 13.2 h | 13.4 h |
Highs change by +2°F from April and +1°F into June.
Nearby alternatives in May
- Drier: Honolulu, HI25 mi · high 85°F · 6 wet days
How Haleiwa ranks in May
- Normal high93rd warmest of 378 cities; 4th of 7 in Hawaii
- Wet days377th driest of 378
- Comfortable days322nd most of 339
What to pack for Haleiwa in May
- A rain jacket or umbrella – rain on about 20 days
- A swimsuit – about 11 beach days
Heating and cooling
May has 0 heating degree days and 304 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.
Questions
How hot is Haleiwa in May?
The normal high is 83°F and the normal low is 67°F. From 1991 to 2020 the hottest May reading was 95°F (May 28, 2003).
Does it rain a lot in Haleiwa in May?
About 20 days in May have at least 0.01 in of precipitation, and the normal total is 3.6 in. The wettest May in 1991-2020 was in 2011 (9.4 in); the driest was in 2009 (0.3 in).
Is May a good time to visit Haleiwa?
May ranks 4th of 12 months on our comfort score for Haleiwa (49 out of 100). It has about 1 comfortable day and about 1 day at 90°F or hotter. The best months are January, February and March.
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.