Climate Comfort Score
92/100
Excellent
NOAA 1991–2020 normals 75°F annual avg Public-domain federal data
Sea Mtn, HI Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 75°F
- Avg annual temp
- 92/100
- Comfort score
- 35.2"
- Annual precip
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Sea Mtn
Sea Mtn, Hawaii averages 75°F a year and scores 92/100 on the comfort index - excellent, milder than 94% of U.S. cities.
- 75°F
- yearly average temperature, NOAA normal
- 92/100
- comfort score, milder than 94% of U.S. cities
- 35.2"
- annual precipitation
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
92/100
Excellent
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) 92.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Sea Mtn area.
How Sea Mtn compares to every U.S. city
Sea Mtn's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
92 Top 6% higher than 94% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Sea Mtn
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Sea Mtn's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
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 |
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
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
What Sea Mtn's climate means for you
Sea Mtn runs 75°F a year - peaking in August, coldest in January.
- Energy bills track 0 heating and 3,652 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Sea Mtn, HI
Sea Mtn, Hawaii runs an annual average of 75°F, ranging from a mean daily high of 82°F to a mean daily low of 68°F, per NOAA's 1991–2020 climate normals. August is typically the warmest month of the year, while January is the coldest. Drawn from station USC00518600, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Sea Mtn averages 35.2 inches of precipitation a year, with negligible snowfall, and that matters as much to daily life here as temperature does. Growing-season length varies with elevation and microclimate. As for energy demand, 0 heating degree days and 3,652 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Sea Mtn scores 92/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, August-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
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 92/100 (Excellent), milder than 94% of U.S. cities in the PlainClimate database.
When is the growing season in Sea Mtn? ▼
Growing season data is not available for Sea Mtn.
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), from weather station USC00518600 near Sea Mtn.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00518600. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.