Climate Comfort Score
92/100
Excellent
NOAA 1991–2020 normals 70°F annual avg 3 stations
Port Aransas, TX Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 70°F
- Avg annual temp
- 92/100
- Comfort score
- 39.6"
- Annual precip
- 285d
- Growing season
30-year climate normals from 3 weather stations (1991-2020).
The climate verdict for Port Aransas
Port Aransas, Texas averages 70°F a year and scores 92/100 on the comfort index - excellent, milder than 94% of U.S. cities.
- 70°F
- annual average temperature (NOAA normal)
- 92/100
- comfort score, milder than 94% of U.S. cities
- 39.6"
- yearly precipitation total
- 285 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
70°F (21°C)
Avg High
80°F
Avg Low
61°F
Annual Precip
39.6"
Comfort Score
92/100
Excellent
Avg Annual Temperature
70°F
30-year mean (NOAA NCEI)
Annual Precipitation
39.6"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Port Aransas) 92.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Port Aransas area.
How Port Aransas compares to every U.S. city
Port Aransas'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 Port Aransas
MethodologyPort Aransas's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running 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 | 66°F (19°C) | 42°F (5°C) | 54°F (12°C) | 2.9" | N/A | 6.4 | 0.0 |
| February | 69°F (21°C) | 48°F (9°C) | 58°F (15°C) | 1.8" | N/A | 3.3 | 0.0 |
| March | 74°F (23°C) | 55°F (13°C) | 65°F (18°C) | 2.0" | N/A | 0.8 | 0.1 |
| April | 79°F (26°C) | 61°F (16°C) | 70°F (21°C) | 2.4" | N/A | 0.1 | 0.8 |
| May | 85°F (29°C) | 69°F (21°C) | 77°F (25°C) | 3.3" | N/A | 0.0 | 1.9 |
| June | 89°F (32°C) | 74°F (23°C) | 82°F (28°C) | 6.2" | N/A | 0.0 | 16.6 |
| July | 91°F (33°C) | 74°F (24°C) | 83°F (28°C) | 2.9" | N/A | 0.0 | 24.5 |
| August | 92°F (33°C) | 74°F (23°C) | 83°F (28°C) | 3.6" | N/A | 0.0 | 27.8 |
| September | 89°F (32°C) | 71°F (22°C) | 80°F (27°C) | 4.5" | N/A | 0.0 | 15.8 |
| October | 83°F (28°C) | 61°F (16°C) | 72°F (22°C) | 4.7" | N/A | 0.2 | 2.3 |
| November | 75°F (24°C) | 53°F (11°C) | 64°F (18°C) | 3.0" | N/A | 1.9 | 0.1 |
| December | 68°F (20°C) | 45°F (7°C) | 56°F (13°C) | 2.4" | N/A | 4.8 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.9"
10.2 days with precipitation
February 1.8"
8.5 days with precipitation
March 2.0"
6.3 days with precipitation
April 2.4"
5.5 days with precipitation
May 3.3"
5.7 days with precipitation
June 6.2"
7.5 days with precipitation
July 2.9"
5.3 days with precipitation
August 3.6"
6.7 days with precipitation
September 4.5"
11.1 days with precipitation
October 4.7"
7.9 days with precipitation
November 3.0"
8.8 days with precipitation
December 2.4"
10.2 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 2
50% probability date
Last Spring Freeze
February 20
50% probability date
Growing Season
285 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,192
Higher = more heating needed
Cooling Degree Days
3,123
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
What Port Aransas's climate means for you
Port Aransas runs 70°F a year - peaking in August, coldest in January.
- Gardeners get about 285 frost-free days, with the last spring freeze near February 20 - plan the planting calendar around it, not the regional average.
- Energy bills track 1,192 heating and 3,123 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: Port Aransas, TX
In Port Aransas, Texas, the NOAA 1991–2020 climate normals put the annual average temperature at 70°F, ranging from a mean daily high of 80°F to a mean daily low of 61°F. August is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from 3 weather stations, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Anyone planning to live, garden, or travel in Port Aransas should weigh precipitation alongside temperature: the annual average runs 39.6 inches, with seasonal snowfall possible. The frost-free season averages 285 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near February 20 and the first fall freeze near December 2. And on the energy front, 1,192 heating degree days and 3,123 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Port Aransas scores 92/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings August-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Port Aransas, TX? ▼
The average annual temperature in Port Aransas, Texas is 70°F. The warmest month averages 92°F (33°C) and the coldest averages 42°F (5°C).
How much rain does Port Aransas get? ▼
Port Aransas receives 39.6 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Port Aransas? ▼
Port Aransas 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 Port Aransas? ▼
Port Aransas has approximately 285 frost-free days per year, with the last spring freeze around February 20 and the first fall freeze around December 2.
How much energy does heating and cooling require in Port Aransas? ▼
Port Aransas has 1,192 heating degree days and 3,123 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 Port Aransas climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 3 weather stations near Port Aransas.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00023906. 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.