Opihihale #2 24.1, Hawaii climate: Climate normals at a NOAA weather station
Opihihale #2 24.1's normal year runs from 57°F February nights to 78°F August afternoons, with 36.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 20.1°C, February lows of 14°C, August highs of 26°C, 918 mm of precipitation a year.
- NOAA stationOpihihale #2 24.1
- Station IDUSC00517166
- Location19.27°N 155.87°W
- Elevation1,360 ft (415 m)
On October 14, the normal high in Opihihale #2 24.1 is 78°F and the normal low 63°F, and the chance of measurable rain or snow is 44%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Opihihale #2 24.1.
- Jan 74° 57°
- Feb 74° 57°
- Mar 74° 58°
- Apr 74° 60°
- May 75° 61°
- Jun 75° 63°
- Jul 77° 64°
- Aug 78° 64°
- Sep 77° 63°
- Oct 77° 62°
- Nov 76° 61°
- Dec 75° 58°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Opihihale #2 24.1 each month?
August is the warmest month, with normal highs of 78°F; February the coldest, with normal lows of 57°F. The most precipitation falls in September (4.72 in), the least in February (2.14 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 74°F | 57°F | 65.6°F | 2.44 | 7 | <1 | <1 | 11 h 10 min |
| February | 74°F | 57°F | 65.4°F | 2.14 | 8 | <1 | <1 | 11 h 30 min |
| March | 74°F | 58°F | 66.1°F | 2.98 | 12 | <1 | <1 | 12 h |
| April | 74°F | 60°F | 66.9°F | 2.52 | 13 | <1 | <1 | 12 h 30 min |
| May | 75°F | 61°F | 68.0°F | 3.24 | 15 | <1 | <1 | 13 h |
| June | 75°F | 63°F | 69.0°F | 2.75 | 16 | <1 | <1 | 13 h 20 min |
| July | 77°F | 64°F | 70.0°F | 3.31 | 15 | <1 | <1 | 13 h 10 min |
| August | 78°F | 64°F | 71.0°F | 3.40 | 15 | <1 | <1 | 12 h 50 min |
| September | 77°F | 63°F | 70.2°F | 4.72 | 15 | <1 | <1 | 12 h 20 min |
| October | 77°F | 62°F | 69.9°F | 3.70 | 13 | <1 | <1 | 11 h 40 min |
| November | 76°F | 61°F | 68.3°F | 2.42 | 10 | <1 | <1 | 11 h 10 min |
| December | 75°F | 58°F | 66.5°F | 2.53 | 8 | <1 | <1 | 11 h |
| Year (annual) | 76°F | 61°F | 68.1°F | 36.15 | 148 | 1 | <1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 23°C | 14°C | 18.7°C | 62 mm |
| February | 23°C | 14°C | 18.6°C | 54 mm |
| March | 23°C | 15°C | 18.9°C | 76 mm |
| April | 24°C | 15°C | 19.4°C | 64 mm |
| May | 24°C | 16°C | 20.0°C | 82 mm |
| June | 24°C | 17°C | 20.6°C | 70 mm |
| July | 25°C | 18°C | 21.1°C | 84 mm |
| August | 26°C | 18°C | 21.7°C | 86 mm |
| September | 25°C | 17°C | 21.2°C | 120 mm |
| October | 25°C | 17°C | 21.1°C | 94 mm |
| November | 24°C | 16°C | 20.2°C | 61 mm |
| December | 24°C | 15°C | 19.2°C | 64 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00517166; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Opihihale #2 24.1?
Every month's normal high in Opihihale #2 24.1 falls between 65°F and 85°F.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00517166.
How hot and how cold does it get at Opihihale #2 24.1?
In a normal year in Opihihale #2 24.1, 1 day a year reaches 90°F, nights almost never fall to freezing and 148 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- fewer than 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 148a normal year
The highest temperature in this station's record (since 1956) is 95°F, on September 13, 2018; the lowest is 48°F, on February 21, 1962.
The wettest calendar year on that record is 1982, with 67.05 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00517166; records: ACIS (NOAA Regional Climate Centers), station USC00517166. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Opihihale #2 24.1?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds at Opihihale #2 24.1, 5.3 kWh per square metre a day. January is the sunniest month (79%) and March the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 4.4 |
| February | 75% | 4.8 |
| March | 71% | 5.2 |
| April | 71% | 5.7 |
| May | 72% | 5.9 |
| June | 74% | 6.1 |
| July | 76% | 6.2 |
| August | 76% | 6.1 |
| September | 75% | 5.6 |
| October | 76% | 5.0 |
| November | 76% | 4.4 |
| December | 76% | 4.0 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Opihihale #2 24.1 record?
A normal year at Opihihale #2 24.1 brings 68 heating degree days, 99% fewer than the median U.S. place (5,373), and 1,197 cooling degree days, 32% more than the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 6,603 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 17 | 37 |
| February | 20 | 30 |
| March | 14 | 46 |
| April | 6 | 64 |
| May | 2 | 95 |
| June | 0 | 119 |
| July | 0 | 157 |
| August | 0 | 186 |
| September | 0 | 158 |
| October | 0 | 152 |
| November | 1 | 99 |
| December | 8 | 54 |
| Year (annual) | 68 | 1,197 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00517166. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Opihihale #2 24.1 been warmer than normal?
Over 43 complete years from 1957 to 2018, the station's annual mean temperature rose at a fitted 3.1°F per century (+0.17°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Opihihale #2 24.1's climate compare?
Opihihale #2 24.1 is warmer than 1 of the 18 places with their own NOAA record in Hawaii, and wetter than 9. Across the 7,247 U.S. stations with normals, its annual mean of 68.1°F is warmer than 93%.
In the Köppen classification computed from these normals, Opihihale #2 24.1 is Aw: tropical savanna. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Opihihale #2 24.1 share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Captain Cook, HI3,751 people · 16 mi N
- Honaunau-Napoopoo, HI2,554 people · 14 mi N
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Opihihale #2 24.1's climate
What is the coldest month at Opihihale #2 24.1?
February, with a normal high of 74°F and a normal low of 57°F. The warmest is August (78°F by day, 64°F at night).
Does it snow at Opihihale #2 24.1?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Opihihale #2 24.1?
September, with 4.72 in of precipitation in a normal year; the driest is February with 2.14 in.
What plant hardiness zone is Opihihale #2 24.1 in?
The USDA's 2023 map puts Opihihale #2 24.1 in zone 12b in ZIP code 96704, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 52°F (25 years, 1991-2020): zone 12a.
Nearby and next
- Hawaii climateThe statewide normals and every place in the state
- South Kona 2 2.32, HI15 miles from this station, 67.2°F a year
- Sea Mountain 12.15, HI25 miles from this station, 75.0°F a year
- Mauna Loa (5 mi NNE), HI27 miles from this station, 46.0°F a year
- Ke-Ahole Point 68.13, HI34 miles from this station, 76.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made