Climate Comfort Score
100/100
Excellent
NOAA 1991–2020 normals Station-mapped location · no exact Census place match 75°F annual avg Public-domain federal data
Sea Mtn, HI Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 75°F
- Avg annual temp
- 100/100
- Comfort score
- 35.2"
- Annual precip
30-year climate normals (1991-2020) from Sea Mtn's primary NOAA station, SEA MTN 12.15.
The climate verdict for Sea Mtn
Warm-season cooling demand defines Sea Mtn, Hawaii, running at more than twice its heating total. The NOAA normal records an annual average of 75°F. It scores 100/100 for composite comfort (excellent), putting it in the most temperate third of station-mapped US locations, milder than 99% of them.
- 75°F
- yearly average temperature, NOAA normal
- 100/100
- comfort score, milder than 99% of station-mapped locations
- 35.2"
- precipitation, annual total
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
75°F (24°C)
Avg High
82°F
Avg Low
68°F
Annual Precip
35.2"
Annual Snow
0.0"
Comfort Score
100/100
Excellent
Sea Mtn 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
Avg Annual Temperature
75°F
30-year mean (NOAA NCEI)
Annual Precipitation
35.2"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Sea Mtn) 100.0%
National median (64)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Sea Mtn area.
How Sea Mtn compares with its closest stations
Against the 6 closest stations in the record, Sea Mtn averages 75°F a year, warmer than S Kona, HI (67°F) and Opihihale, HI (68°F). On comfort score it places 1 of 6 in that local group.
Corpus-relative placement
Where Sea Mtn 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 99%
- of 6,861 measured location normals.
- Annual precipitation
- Wetter than 48%
- of 6,352 measured location normals.
- Seasonal temperature swing
- Larger than 0%
- of 6,861 complete location-year normals.
How Sea Mtn compares across U.S. station-mapped locations
Sea Mtn's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
100 Top 1% milder than 99% of 6,189 station-mapped locations
- 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%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
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 | 79°F (26°C) | 65°F (18°C) | 72°F (22°C) | 3.5" | 0.0" | 0.0 | 0.2 |
| February | 80°F (27°C) | 65°F (18°C) | 72°F (22°C) | 3.9" | 0.0" | 0.0 | 0.0 |
| March | 80°F (26°C) | 66°F (19°C) | 73°F (23°C) | 4.0" | 0.0" | 0.0 | 0.1 |
| April | 80°F (27°C) | 67°F (19°C) | 74°F (23°C) | 1.9" | 0.0" | 0.0 | 0.0 |
| May | 82°F (28°C) | 68°F (20°C) | 75°F (24°C) | 1.4" | 0.0" | 0.0 | 0.1 |
| June | 83°F (28°C) | 70°F (21°C) | 76°F (24°C) | 0.8" | 0.0" | 0.0 | 0.1 |
| July | 84°F (29°C) | 70°F (21°C) | 77°F (25°C) | 1.9" | 0.0" | 0.0 | 0.0 |
| August | 85°F (29°C) | 71°F (21°C) | 78°F (25°C) | 2.9" | 0.0" | 0.0 | 0.2 |
| September | 84°F (29°C) | 70°F (21°C) | 77°F (25°C) | 2.8" | 0.0" | 0.0 | 0.1 |
| October | 84°F (29°C) | 70°F (21°C) | 77°F (25°C) | 4.1" | 0.0" | 0.0 | 0.1 |
| November | 82°F (28°C) | 69°F (20°C) | 75°F (24°C) | 4.0" | 0.0" | 0.0 | 0.0 |
| December | 81°F (27°C) | 67°F (19°C) | 74°F (23°C) | 4.0" | 0.0" | 0.0 | 0.5 |
The year, day by day
The calendar barely moves in Sea Mtn: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 65°F near January 24 and 85°F near July 30.
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 65°F around January 24.
Where the wet dates fall
The likeliest wet date is October 17, when 32% of years recorded at least a hundredth of an inch. The driest is August 15 at 18%. Summed across the calendar, that is about 91 wet dates a year.
The widest day
February 8 carries the biggest normal gap between afternoon and dawn, 15°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Sea Mtn.
Where Sea Mtn Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 15°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
January 3.5"
8.0 days with precipitation
February 3.9"
8.0 days with precipitation
March 4.0"
9.0 days with precipitation
April 1.9"
7.6 days with precipitation
May 1.4"
7.0 days with precipitation
June 0.8"
5.8 days with precipitation
July 1.9"
5.7 days with precipitation
August 2.9"
5.3 days with precipitation
September 2.8"
7.2 days with precipitation
October 4.1"
9.4 days with precipitation
November 4.0"
9.0 days with precipitation
December 4.0"
7.5 days with precipitation
Sea Mtn spreads its precipitation across the year
Neither half of the year dominates here: June through August take 16% of the annual total and December through February 33%, with neither reaching the 35% that would mark a distinct wet season. Sea Mtn has no dry season to plan around, though it does carry an unusually narrow 5.4°F seasonal spread.
The gap between the wettest and driest month still matters: October averages 4.1" and June 0.8". The three wettest months together take 35% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Sea Mtn, it arrives in quantity
35.2" of precipitation falls across only about 90 wet days here, averaging 0.39 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 90 a year, 25% of all days
- Average depth per wet day
- 0.39 inches
- Most wet days
- October, about 9
- Fewest wet days
- August, about 5
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Sea Mtn'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
0
Higher = more heating needed
Cooling Degree Days
3,652
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
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 Sea Mtn's climate means for you
Sea Mtn runs 75°F a year - peaking in August, coldest in January.
- Air conditioning drives the bills rather than the furnace: 3,652 cooling degree days against 0 for heating.
- See how Sea Mtn lines up against the rest of Hawaii and the national rankings. See rankings
Climate Guides
Data-derived climate profile
How Sea Mtn's climate pattern fits together
cooling led · moderate · low swing
Warm-season load persists through a relatively even calendar in Sea Mtn. Cooling totals 3,652 degree days, more than double the 0 heating measure, and the 5.4°F seasonal range is compact rather than sharply divided.
Sea Mtn's 35.2 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Recorded annual snowfall is negligible. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
Temperature varies within a narrow 5.4°F band across the normal year. August and January mark the typical warm and cold ends of the calendar. The annual average is 75°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
A frost-free growing-season length is not available for Sea Mtn. 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 Sea Mtn'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 78°F (25°C), a middling summer peak by national standards rather than an extreme one.
- Coldest normal
- January
- The coldest month still averages 72°F (22°C), above freezing, so this calendar has no hard winter.
- Rainfall rhythm
- October to June
- October is typically wettest; June 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 Sea Mtn, HI? ▼
The average annual temperature in Sea Mtn, Hawaii is 75°F. The warmest month averages 85°F (29°C) and the coldest averages 65°F (18°C).
How much rain does Sea Mtn get? ▼
Sea Mtn receives 35.2 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Sea Mtn? ▼
Sea Mtn has a climate comfort score of 100/100 (Excellent), milder than 99% of station-mapped locations in the PlainClimate database.
How much energy does heating and cooling require in Sea Mtn? ▼
Sea Mtn has 0 heating degree days and 3,652 cooling degree days annually, a cooling-dominated climate. See our <a href="/guides/reading-weather-data" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Sea Mtn climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020). Figures on this page come from Sea Mtn's primary NOAA station (SEA MTN 12.15, USC00518600).
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Sea Mtn's primary station: SEA MTN 12.15 (USC00518600). 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
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate
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.