Kahoolawe, HI Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
- Warmer national band · Avg annual temp
- 71°FAnnual mean temperature: 71.1°F. National station-mapped location corpus median: 52.2°F across 6,861 measured records.
- Upper score band · Comfort score
- 88/100PlainClimate Comfort Score: 88/100. National station-mapped Comfort Score corpus median: 64/100 across 6,189 measured records.
- Drier national band · Annual precip
- 17.1"Annual precipitation: 17.1 inches. National station-mapped location corpus median: 36.2 inches across 6,352 measured records.
30-year climate normals (1991-2020) from Kahoolawe's primary NOAA station, KAHOOLAWE 499.6.
The climate verdict for Kahoolawe
Kahoolawe, Hawaii is cooling-led and dry. Its 17.1 inches of annual precipitation pairs with an annual average of 71°F. It scores 88/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 89% of them.
- 71°F
- yearly average temperature, NOAA normal
- 88/100
- comfort score, above 89% of station-mapped location scores
- 17.1"
- yearly precipitation total
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
71°F (22°C)Annual mean temperature: 71.1°F. National station-mapped location corpus median: 52.2°F across 6,861 measured records.
Warmer national band
Avg High
76°FAnnual average daily high: 75.5°F. National station-mapped location corpus median: 63.8°F across 6,861 measured records.
Warmer national band
Avg Low
67°FAnnual average daily low: 66.8°F. National station-mapped location corpus median: 41.1°F across 6,861 measured records.
Warmer national band
Annual Precip
17.1"Annual precipitation: 17.1 inches. National station-mapped location corpus median: 36.2 inches across 6,352 measured records.
Drier national band
Annual Snow
0.0"Annual snowfall: 0.0 inches. National station-mapped location corpus median: 18.9 inches across 4,098 measured records.
Low-snow national band
Comfort Score
88/100PlainClimate Comfort Score: 88/100. National station-mapped Comfort Score corpus median: 64/100 across 6,189 measured records.
Upper score band · Excellent
Kahoolawe sits in Hawaii, the #2 hottest U.S. state at 72.4°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · model supports three NOAA data products
Kahoolawe's broader climate profile: 82/100
A percentile-benchmarked model across annual, daily, and hourly climate normals. This record uses 2 measured NOAA products; every input remains inspectable.
PlainClimate-derived, not an official NOAA rating. This separate index does not replace the established Comfort Score used in rankings, and it is not a verdict on safety, health, housing, culture, or overall quality of life.
-
Annual temperature balance
71.1°F · 3.6° from 67.5°F
89/100 A · weight 25%Distance from a 67.5°F annual mean; smaller is better.
NOAA annual/seasonal normals ·
ANN-TAVG-NORMAL -
Precipitation balance
17.1 in · 17.9 from 35 in
36/100 F · weight 15%Distance from 35 annual inches; smaller is better.
NOAA annual/seasonal normals ·
ANN-PRCP-NORMAL -
Snowfall burden
0.0 inches/year
90/100 A · weight 10%Annual snowfall; lower is better in this formula.
NOAA annual/seasonal normals ·
ANN-SNOW-NORMAL -
Frost-free season
Not measured
N/A N/A · weight 10%Not scored; its 10% weight redistributes across measured dimensions.
Days between NOAA 50% spring and fall freeze dates; longer is better.
NOAA annual/seasonal normals ·
ANN-TMIN-PRBLST-T32FP50 + ANN-TMIN-PRBFST-T32FP50 -
Normal heat + freeze calendar
0 calendar days
100/100 A · weight 25%Normal high ≥90°F days plus normal low ≤32°F days; lower is better.
NOAA daily multivariate normals ·
DLY-TMAX-NORMAL + DLY-TMIN-NORMAL (derived counts) -
Summer moisture balance
Not measured
N/A N/A · weight 15%Not scored; its 15% weight redistributes across measured dimensions.
June–August mean dew point distance from 52.5°F; smaller is better.
NOAA hourly normals ·
HLY-DEWP-NORMAL
Live national benchmark table and calculation
Each raw metric is linearly interpolated across its live p10, p25, p50, p75, and p90 breakpoints. Equal-valued breakpoints collapse to their mean percentile; values outside p10-p90 extrapolate toward 0 or 100 using the nearest non-flat segment, then clamp to that range. Scores favor the direction shown, then combine by the listed weights. Missing dimensions are removed from both the weighted sum and available weight before normalization.
| Dimension | Weight | Better | p10 | p25 | p50 | p75 | p90 | n |
|---|---|---|---|---|---|---|---|---|
| Annual temperature balance | 25% | Lower | 3.4 | 7.9 | 15.3 | 21 | 25.2 | 6,861 |
| Precipitation balance | 15% | Lower | 2.7 | 7.1 | 14.2 | 20.9 | 25.7 | 6,352 |
| Snowfall burden | 10% | Lower | 0 | 2.1 | 18.9 | 42.7 | 69.8 | 4,098 |
| Frost-free season | 10% | Higher | 127 | 150 | 180 | 215 | 253 | 6,446 |
| Normal heat + freeze calendar | 25% | Lower | 56 | 102 | 145 | 180 | 207 | 6,859 |
| Summer moisture balance | 15% | Lower | 2.7 | 6.1 | 9.3 | 14.8 | 18.4 | 417 |
Grades: A 85–100 · B 70–84 · C 55–69 · D 40–54 · F below 40.
Established ranking Comfort Score: 88/100 · inspect its separate fixed-point formula
This legacy score keeps the rankings stable. It uses annual/seasonal normals only; unlike the Climate Living Index above, it is not percentile-scored per dimension.
- Temperature mildness71.1°F annual mean40/40 points
- Precipitation moderation17.1 inches/year20/30 points
- Snow burden0.0 inches/year15/15 points
- Frost-free seasonNot measuredN/A · weight removed
75/85 available points → 88/100. Full Comfort Score method.
Source: NOAA NCEI U.S. Climate Normals v1.0.1 (1991–2020). This record uses NOAA annual/seasonal normals and NOAA daily multivariate normals; the model also supports hourly normals where published · data updated 2026-08-04. Full methodology and limits.
How Kahoolawe compares with its closest stations
Against the 6 closest stations in the record, Kahoolawe averages 71°F a year, warmer than Kula Hospital, HI (63°F) and Kula Branch Stn, HI (64°F), and cooler than Makena Golf Crs, HI (75°F) and Kahului, HI (77°F). On comfort score it places 4 of 6 in that local group.
Corpus-relative placement
Where Kahoolawe sits across the climate record
These comparisons place this primary-station normal among station-mapped locations with the same NOAA 1991–2020 fields.
- Annual temperature
- Warmer than 96%
- of 6,861 measured location normals.
- Annual precipitation
- Wetter than 22%
- of 6,352 measured location normals.
- Seasonal temperature swing
- Larger than 0%
- of 6,861 complete location-year normals.
How Kahoolawe compares across U.S. station-mapped locations
Kahoolawe's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
88 Top 11% score exceeds 89% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 74°F (23°C) | 65°F (18°C) | 70°F (21°C) | 2.6" | 0.0" | 0.0 | 0.0 |
| February | 74°F (23°C) | 64°F (18°C) | 69°F (21°C) | 1.1" | 0.0" | 0.0 | 1.0 |
| March | 73°F (23°C) | 64°F (18°C) | 69°F (20°C) | 1.4" | 0.0" | 0.0 | 0.3 |
| April | 74°F (23°C) | 65°F (18°C) | 69°F (21°C) | 0.9" | 0.0" | 0.0 | 0.0 |
| May | 75°F (24°C) | 66°F (19°C) | 71°F (22°C) | 1.4" | 0.0" | 0.0 | 0.0 |
| June | 76°F (24°C) | 67°F (20°C) | 72°F (22°C) | 1.0" | 0.0" | 0.0 | 0.0 |
| July | 77°F (25°C) | 69°F (20°C) | 73°F (23°C) | 1.1" | 0.0" | 0.0 | 0.0 |
| August | 78°F (25°C) | 69°F (21°C) | 73°F (23°C) | 0.8" | 0.0" | 0.0 | 0.0 |
| September | 78°F (26°C) | 69°F (21°C) | 73°F (23°C) | 0.9" | 0.0" | 0.0 | 0.0 |
| October | 77°F (25°C) | 69°F (21°C) | 73°F (23°C) | 1.6" | 0.0" | 0.0 | 0.0 |
| November | 76°F (24°C) | 67°F (20°C) | 72°F (22°C) | 1.9" | 0.0" | 0.0 | 0.0 |
| December | 75°F (24°C) | 66°F (19°C) | 70°F (21°C) | 2.4" | 0.0" | 0.0 | 0.0 |
The year, day by day
The calendar barely moves in Kahoolawe: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 64°F near March 2 and 78°F near August 25.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 64°F around March 2.
Where the wet dates fall
The likeliest wet date is July 10, when 25% of years recorded at least a hundredth of an inch. The driest is May 10 at 19%. Summed across the calendar, that is about 83 wet dates a year.
The widest day
February 11 carries the biggest normal gap between afternoon and dawn, 10°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Kahoolawe.
Where Kahoolawe Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 10°F.
Standing computed against the distribution of 6,860 NOAA 1991–2020 normals stations in the PlainClimate database; only nationally notable standings are shown.
Monthly Precipitation
Average monthly rainfall and snowfall
7.4 days with precipitation
6.0 days with precipitation
7.0 days with precipitation
6.8 days with precipitation
5.7 days with precipitation
6.7 days with precipitation
8.3 days with precipitation
6.5 days with precipitation
7.6 days with precipitation
6.1 days with precipitation
7.5 days with precipitation
6.8 days with precipitation
Kahoolawe's wet season runs through the cold months
December, January and February carry 35% of the year's precipitation here, while June through August contribute 17%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows an unusually narrow 4.6°F seasonal spread.
- Wettest month
- January, 2.6"
- Driest month
- August, 0.8"
- Wettest three months
- January, December, November (40% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
How Kahoolawe's precipitation splits across the calendar
About 82 days a year record measurable precipitation here, carrying 17.2" between them, or roughly 0.21 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Kahoolawe's record shows no measurable snowfall
This station measured snowfall across the 1991-2020 period and recorded none: the annual normal is 0.0 inches. That is a measured zero rather than missing data, which is a meaningful distinction here , most stations in the database simply do not report snow at all, and those pages say nothing about it.
A thirty-year normal of zero describes the typical year at this station. It is not a claim that snow has never fallen in the area.
Frost Dates & Growing Season
First Fall Freeze
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7
Higher = more heating needed
Cooling Degree Days
2,250
Higher = more cooling needed
Warmest Month
August
Coldest Month
March
Places with a similar climate profile
NOAA 1991–2020 annual normals connect this location to non-geographic peers. Temperature peers use annual mean temperature; energy peers use both heating and cooling degree days.
Closest annual-temperature peers
What Kahoolawe's climate means for you
Kahoolawe runs 71°F a year - peaking in August, coldest in March.
- Air conditioning drives the bills rather than the furnace: 2,250 cooling degree days against 7 for heating.
- See how Kahoolawe lines up against the rest of Hawaii and the national rankings. See rankings
Climate Guides
Data-derived climate profile
How Kahoolawe's climate pattern fits together
cooling led · dry · low swing
Warm-season load persists through a relatively even calendar in Kahoolawe. Cooling totals 2,250 degree days, more than double the 7 heating measure, and the 4.6°F seasonal range is compact rather than sharply divided.
Heat demand sits beside limited local precipitation: Kahoolawe receives 17.1 inches in a normal year, inside PlainClimate's dry range. Recorded annual snowfall is negligible. Month-level precipitation is the useful check on when that small annual total arrives.
The calendar stays thermally compact and dry. August and March mark the typical warm and cold ends of the calendar, only 4.6°F apart, while the annual precipitation total remains below PlainClimate's dry threshold. The annual average is 71°F. The monthly rows show whether that limited precipitation is spread through the year or concentrated in a shorter interval.
A frost-free growing-season length is not available for Kahoolawe. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
These labels group NOAA 1991-2020 normals from Kahoolawe's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. They are descriptive ranges, not an official NOAA classification or a forecast for any specific year.
The year in four calendar signals
- Warmest normal
- August
- The month averages 73°F (23°C), a middling summer peak by national standards rather than an extreme one.
- Coldest normal
- March
- The coldest month still averages 69°F (20°C), above freezing, so this calendar has no hard winter.
- Rainfall rhythm
- January to August
- January is typically wettest; August is driest.
- Mild-temperature window
- January through December
- Monthly means sit between 55°F and 75°F in this window.
Frequently Asked Questions
What is the average temperature in Kahoolawe, HI? ▼
How much rain does Kahoolawe get? ▼
What is the comfort score for Kahoolawe? ▼
How much energy does heating and cooling require in Kahoolawe? ▼
Where does this Kahoolawe climate data come from? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Kahoolawe's primary station: KAHOOLAWE 499.6 (USC00512558). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. The reproducible method is an exact normalized name-and-state match; unresolved is an upper bound on facilities because spelling variants can be missed.
Related
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.